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US 20020171567A1
(19) United States
(12) Patent Application Publication (10) Pub. No.: US 2002/0171567 A1
(43) Pub. Date:
Altare et al.
(54) PORTABLE CD-ROM/ISO TO HDD/MP3
NOV. 21, 2002
Publication Classi?cation
RECORDER WITH SIMULTANEOUS
CD-READ/MP3- ENCODE/HDD-WRITE, OR
HDD-READ/MP3-DECODE, TO PLAY,
(51)
(52)
Int. Cl? .
H03M 5/00
Us. 01. .............................................................. ..341/55
POWER SAVING BUFFER, AND ENHANCED
SOUND OUTPUT
(57)
(76) Inventors: William Christopher Altare,
Oceanside, CA (US); Anton N.
Handal, El Cajon, CA (US)
ABSTRACT
A combination CD-ROM and MP3 recorder/player playing
a CD-ROM decodes 16-bit ISO standard code Words into an
audio Wave form converts this Wave form to sound While
encoding and digitizing the Wave form into 24-bit MP3
format digital data. To conserve poWer the MP3 data is
Correspondence Address:
William C. Fuess
FUESS & DAVIDENAS
buffered in a solid state memory, preferably of the FLASH
or DRAM type, before being Written to a hard disk. Both
reading of the CD/ROM and encoding the read contents as
10951 Sorrento Valley Road
San Diego, CA 92121 (US)
(21) Appl. No.:
09/860,935
MP3 data, and interchange of MP3 data With other recorder/
players, can be accomplished at greater than real-time play
rates, permitting that, most typically, some 1200+ musical
(22) Filed:
May 18, 2001
Works can transferred eXpediently.
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Patent Application Publication Nov. 21, 2002 Sheet 4 0f 5
US 2002/0171567 A1
Nov. 21, 2002
US 2002/0171567 A1
PORTABLE CD-ROM/ISO TO HDD/MP3
RECORDER WITH SIMULTANEOUS
CD-READ/MP3- ENCODE/HDD-WRITE, OR
HDD-READ/MP3-DECODE, TO PLAY, POWER
SAVING BUFFER, AND ENHANCED SOUND
OUTPUT
RELATION TO A PROVISIONAL PATENT
APPLICATION
[0001] The present patent application is descended from,
and claims bene?t of priority of, US. provisional patent
application Serial No. 60/205,936 ?led on May 18, 2000 for
not heretofore been deemed realistically realiZable With a
portable, battery-poWered, MP3 player-recorder.
[0009]
2.2 Conservation of PoWer in CD-ROM and MP3
Player-Recorders,
[0010] Including in Combination CD-ROM and MP3
Player-recorders It has been recogniZed that poWer may be
conserved in CD-ROM and MP3 player-recorders, and in
combination CD-ROM and MP3 player-recorders, by the
simple expedient of turning off functional sections of the
device, especially rotating devices such as CD-ROM and
hard disk drives, When not in use.
an ECHO MUSIC SYSTEM to inventors including the
[0011] HoWever, little attention has been given to design
selfsame Chris Altare Who is the inventor of the present
ing a combination CD-ROM and MP3 player-recorder form
patent application.
“the ground up” so as to minimiZe the uses, and the durations
of uses, or high-poWered sections at the possible costs of
neW sections, and/or the longer and/or neW uses of loWer
poWered sections. The present invention Will be seen to
employ
a semiconductor memory in combination With
BACKGROUND OF THE INVENTION
[0002]
1. Field of the Invention
[0003]
The
present
invention
generally
concerns
CD-ROM and MP3 player-recorders, especially as may be
(i) combined and (ii) portable.
[0004] The present invention particularly concerns (ii)
simultaneous encoding and recording of MP3 ?les on a Hard
Disk Drive (HDD) derived from a CD-ROM While playing
the CD-ROM, and the subsequent playing of MP3 ?les from
a HDD; (ii) conservation of poWer in combination CD-ROM
both of (ii) a CD/ROM player, and also a (iii) hard disk drive
for both recording and playing, to the particular purpose of
minimiZing the time that both the (ii) CD/ROM player, and
the (iii) HDD are operative, consuming poWer, during nor
mal player-recorder functions.
[0012] 2.3 Retrospective Initiation of Recording in, and
Computerless High-speed Transfer BetWeen, MP3 Player
Recorders
and MP3 player-recorders; (iii) enhanced sound output from
[0013] The concept that something that is being played,
CD-ROM and MP3 player-recorders; (iv) retrospective ini
tiation of recording, (v) and computerless high-speed trans
such as a tract on a CD-ROM, could selectively, retrospec
tively, be chosen to be saved, or not to be saved, mandates
fer betWeen MP3 player-recorders.
that there is something to save resulting from the playing, to
Wit: a ?le. The creation, and the storage, of MP3 encoded
[0005] 2. Description of the Prior Art
[0006] 2.1 Encoding/Recording MP3 ?les On, and Playing
MP3 Files From, a Hard Disk Drive (HDD) Portable CD
ROM players having been around several years, portable
players of MP3 ?les have recently (circa 2001) become
popular. Some portable player-recorders are capable of
dealing With both CD-ROM and MP3 media, as the player
recorder of the present invention Will prove to be capable of.
HoWever, in order to encode MP3 from CD-ROM in real
time, a processor/microprocessor of considerable capability
has heretofore been required, making that this process has
normally been performed in computers, and limiting the
application of the necessary processing poWer to portable
units, especially as may be poWered by batteries.
[0007] The combination portable CD-ROM and MP3
player-recorder of the present invention Will be seen not only
to use a neW loW-poWer MP3 encoder/decoder chip that
permits the encoding of MP3 Words at rates equal to and
greater than normal play speeds, but to use this chip ?exibly,
and to neW ends of creating MP3 digital Words that are not
of the same bit-Width, and sound quality, as are the digital
Words of a compressed ISO standard CD-ROM Which these
MP Words serve to supplant.
[0008] Additionally in the prior art, some units, not nor
mally portable and often associated With computers as
drives, are capable of duplicating MP3 format media at
?les
the action
has in the
of past
a processor
most normally
or microprocessor
required, respectively,
running an
operating system having instructions or microcode most
normally resident on, and read from, a HDD, along With (ii)
the lodging of ?les on a HDD. The running of both a
processor/microprocessor and a HDD has deemed to be so
energy intensive in a portable, battery-poWered device, that
no accommodation has been given to “retrospectively
throWing aWay” a just-made MP3 ?le. At best the user/
listener can go and delete, usually from a HDD, the ?le just
made.
[0014] The present invention Will shoW hoW to make an
MP3 ?le in a portable, battery poWered, With such energy
economy that it is not detrimental to listen to a CD-ROM,
selectively retrospectively keeping certain MP3 ?les neWly
encoded from selected tracks of the CD-ROM While com
pletely discarding other neWly encoded MP3 ?les as repre
sent other, unWanted, tracks.
[0015]
2.4 High-speed RIP of a CD/ROM
[0016] Taking the digital contents of an audio (as opposed
to a data) CD/ROM into one or more MP3 format ?les stored
upon a computer has been a task requiring considerable
computer “horsepower”, and has thus been but seldom
performed by computers, and, With the seemingly consid
erable required energy, never (to the best knoWledge of the
inventors) by portable, battery-poWered, combination
greater than normal playback speeds. HoWever, due to
CD/ROM and MP3 player-recorders. The present invention
requirements for extensive computer resource for the read
Will be seen to overcome the previous limitations, including
in areas of processing and storage and poWer, in this process
ing and Writing of necessary ?les, this level of function has
Nov. 21, 2002
US 2002/0171567 A1
by managing the rotating times of disk drives carefully,
(ii) buffering CD/ROM data until suitably encoded as MP3,
and (iii) again buffering the MP3 data until suitably recorded
on a HDD. Everything goes along reasonably speedily at
about 4><-6>< normal read speed because, inter alia, there is
no processor/microprocessor and no operating system and
no instructions involved—as is conventional. Instead, the
entire MP3 encoding Will be seen to be done in a single chip,
and the management of all data transfer in another, ?le
manager, chip.
[0017] 2.5 Computerless High-speed Transfer BetWeen
MP3 Player-Recorders
Format, Than That Word and Format in Which the Audio
Wave Form Was Initially Encoded
[0028] In accordance With a ?rst aspect of the present
invention an audio Wave form, normally music, is (re-)
encoded (for later playback) in
a longer bit length code
Word, and/or (ii) a better encoding format, than that Word
and (ii) format in Which the audio Wave form Was initially
encoded.
[0018] High speed transfer of ?les, such as MP3 ?les,
[0029] In particular, the audio Wave form may arise from
1) ?rst-converting, preferably in a D/A converter, a 16-bit
?rst digital Words encoded in the CD-ROM ISO standard.
The 2) ?rst playing is thus most preferably of a standard CD
ROM. MeanWhile a simultaneous 3) second-encoding and
requires some measure of correlation in speed of transmit
re-digitiZing of the (?rst-played) ?rst audio signal is pref
and receive, and some buffering. Heretofore MP3 Player
recorders have been routinely connected to computers for
bi-directional transfer of MP3 ?les in accordance With the
erably into 24-bit MP3 format second digital Words. These
second digital Words are 4) subsequent stored until, at a later
second time, they are 5) decoded into a second analog signal,
greater speed, and buffer capacity, of the computer, but it has
Which is 6) second played.
not been realiZed to transfer MP3 ?les betWeen portable
player-recorders themselves, Without bene?t of any com
puter.
SUMMARY OF THE INVENTION
[0019] In several of its disparate aspects the present inven
tion contemplates an improvement to the sequence of:
[0020] 1) ?rst-converting at a ?rst time successive
?rst-bit-length ?rst-encoded ?rst digital Words to a
?rst analog signal;
[0021] 2) ?rst playing at the ?rst time this ?rst analog
signal through speakers or headphones or the like to
the human ear, While also
[0022] 3) second-encoding and re-digitiZing, prefer
ably at the ?rst time, this ?rst analog signal into a
successive second-bit-length second-encoded sec
ond digital Words, folloWed by
[0023] 4) storing these second digital Words until, at
a later second time,
[0024] 5) second-converting the second digital Words
into a second analog signal, and
[0025] 6) second playing also at the second time this
second analog signal through speakers or head
phones or the like to the human ear.
[0026] The present invention contemplates, inter alia, (1)
(re-)encoding an audio Wave form (for later playback) in a
longer code Word, and better encoding format, than that
Word and format in Which the audio Wave form Was initially
encoded; (2) conserving poWer in a portable CD-ROM and
MP3 player-recorder by various strategies of (2a) minimiZ
ing data references to a hard disk drive (HDD) by use of a
large data buffer, (2b) eliminating any reference to the HDD
for instructions, and (2c) eliminating any microprocessor (in
performance of MP3 encoding/decoding); (3) simulta
neously reading cd-rom While encoding MP3 and Writing a
HDD, or reading the HDD and decoding MP3; (4) the
retrospective selection of songs for recording; and (5) com
puterless high-speed transfer betWeen MP3 player-record
[0030] In accordance With the present invention the bit
length and/or the encoding/digitaliZing standard of the sec
ond digital Words is longer and/or better than are, respec
tively, the bit length or the encoding/digitaliZing standard of
the ?rst digital Words. Namely, and by Way of example, the
?rst digital Words are most commonly a relatively shorter 16
bits per Word, digitaliZed at the CD ROM ISO standard,
While the second digital Words are a relatively longer 24 bits
each Word, encoded at the superior MP3 standard.
[0031] The purpose of the unequal quality betWeen the
?rst and the second digital representations of the same
analog Wave form—most typically music—is that this Wave
form—this music—Will sound different in a manner that is
most commonly judged to be superior When it is (re-)
rendered from digital Words of longer bit length and/or
better encoding/digitaliZing standard. Music (re)rendered at
both the longer bit length (24 bits versus 16 bits) and better
standard (CD-ROM ISO versus MP3) is normally judged
superior by both lay persons and musicologists. Quite uneX
pectedly, this is true even if—as in the scenario above—the
second, higher quality, digital recording is made from an
analog signal derived from the ?rst, loWer quality, digital
recording.
[0032] The operation of this aspect of the present inven
tion is thus someWhat akin to the digital re-mastering
transpiring during the 1980-2000 time period of analog
sound tracks ?rst recorded in the 1900-1980 time period—
but Without any active ?lters typical of that process. The
present invention is arguably a demonstration that “quality
Will out”, or that “quality is its oWn reWard”, in rendering
(and re-rendering) into audio the contents of, most typically,
a CD ROM.
[0033] Of course if it becomes advantageous, either to
reduce component cost or improve performance, the ?rst
bit-length ?rst-encoded ?rst digital Words can be encoded
into the second-bit-length second-encoded second digital
Words Without ?rst converting the ?rst digital Words to an
analog signal, and Without then reconverting the analog
ers, commonly called a “bulk dump”.
signal back to digital in order to create the second digital
Words. This direct digital-code-Word to digital-code Word
conversion is also enabled by the present invention.
[0027] 1. (Re-)Encoding an Audio Wave Form (For Later
Playback) in a Longer Code Word, and Better Encoding
MP3 Player-Recorder Through (1) MinimiZing Data Refer
[0034]
2. PoWer Conservation in a Portable CD-ROM and
Nov. 21, 2002
US 2002/0171567 A1
ences to a Hard Disk Drive (HDD) by Use of a Large Data
used by any microprocessor—of Which there is preferably
Buffer, (2) Eliminating Any Reference to the HDD for
none such. The preferred CD-ROM and MP3 player-re
corder of the present invention happens to move digital data
for all recording and playback purposes under control of a
Instructions, and (3) Eliminating Any Microprocessor (In
Performance of MP3 Encoding/Decoding)
[0035] In another of its aspects the present invention
contemplates at least three schemes of poWer conservation,
particularly in performance of the sequence 1)-6) above, so
as to realiZe about six times less poWer consumption, and six
times longer battery life, than heretofore.
[0036] 2.1 Simple On/Off Control of Rotating Devices
[0037] Rotating devices in the form of
CD-ROM
drives, and, because of the greater inertial mass of the
platter(s) of most disk drives of 10+ Gbit capacity circa year
2001, (ii) Hard Disk Drives (HDDs), consume the most of
the poWer in a portable CD-ROM and/or MP3 player/
recorder. Needless to say, almost all modern CD-ROM
and/or MP3 player/recorder shut these drives, either or both,
doWn When they are not in use.
digital ?le manager and HDD controller chip that—although
responding to a rudimentary and specialiZed instruction set
architecture—does not require (for any purpose) that any of
its instructions should be stored on the HDD. (Indeed, the
HDD of the present invention contains no instructions; it
contains 100% data.) HoWever, the same function could be
more conventionally realiZed by
a microprocessor chip
executing (ii) ?rmWare from (iii) volatile and (iv) non
volatile semiconductor memory. The reason that this does
not happen—that it is not thought to keep the microproces
sor from going to the disk drive for such process control
purposes as mandate that the HDD be in constant rotation is
because the microprocessor, or, more likely, a full-bloWn
computer processor, is required to perform encoding and
decoding to the MP3 standard. This leads us to the next
aspect of the poWer-conserving scheme of the present inven
tion.
[0044] 2.4 Performance of MPE Encoding/Decoding in a
Chip Eliminates a Microprocessor/Processor Running an
[0038] The Way this Works in the present invention is,
hoWever, speci?c to the functions performed. In accordance
With the invention the 1) ?rst-converting is of ?rst digital
Words retrieved from a spinning
CD-ROM While the (ii)
Winchester disk drive is stationary and idle, the 3) second
encoded and re-digitiZed second digital Words being stored
to the (iii) volatile memory. Later, the (ii) Winchester disk is
rotated to receive, and for 4) storing, the second digital
Words from the (iii) volatile memory. Still later, the 5)
second-converting is of these second digital Words retrieved
[0045] Yet still further in accordance With the present
from a rotating (ii) Winchester disk, the
stationary and idle.
or, as is preferred in the present invention, a HDD controller
Operating System
invention, encoding of audio Wave forms to the MP3 stan
dard, and decoding of MP3 data to audio Wave forms, is
done in a neW, but publicly available, chip developed in
collaboration With the inventor of the present invention. It is
CD-ROM being
the existence of this chip Which frees any microprocessor—
[0039] 2.2 A Large Data Buffer Permits But Infrequent
PoWering of Rotating Devices
Which, in accordance With the aspect of the present invention
expounded in the previous paragraph, makes that no instruc
[0040]
tion references need be made to the HDD. Moreover, and
The CD-ROM and MP3 player-recorder of the
present invention goes further, hoWever, in greatly reducing,
or even eliminating, necessary reference(s) to, and poWered
and ?le management chip—to perform only ?le transfer,
importantly, moving the MP3 encoding/decoding to a (neW)
specialiZed chip itself serves to get rid of an incredible
operational periods of, its HDD.
amount of energy-intensive (micro)processing. The ?nal
poWer-saving strategy of the present invention thus involves
[0041] In accordance With the present invention, a CD
ROM and/or MP3 player-recorder is possessed of a large
semiconductor data buffer memory, preferably of the
FLASH or DRAM types and most preferably about 16
the elimination of at least a microprocessor, and more
commonly an entire computer processor running (in order to
realiZe MP3 compression/decompression) an operating sys
Mbytes in siZe. Data, most normally digital audio data, read
[0046] 3. Simultaneously (1a) Reading CD-ROM, (1b)
from a CD-ROM is—Whether re-encoded (as in the present
invention) or not—buffered in the buffer memory before
being periodically recorded on the HDD. Normally about
3-4 complete songs can be buffered in the buffer memory
before being recorded on the HDD. (If the human operator
of the CD-ROM and MP3 player-recorder decides in the
interim that he/she does not Wish to record one or more
songs, then the energy to do so need never be expended).
LikeWise, during playback from the HDD some 3-4 songs
Will be uploaded to the buffer memory in and as a high-speed
data stream of, typically, some 2000 milliseconds (2 sec
onds), after Which the HDD is poWered doWn for, most
typically, some 10 minutes.
[0042]
2.3 Elimination of Instruction Storage in a HDD
Rotating Device Further Prolongs Non-operating Periods
[0043] Still further in accordance With the present inven
tion, full control of the digital data storage and playback
processes is realiZed Without necessity of any reference to
the HDD for any instructions—of Which there are none—
tem
Encoding MP3 and (1c) Writing HDD; or (2a) Reading
HDD and (2b) Decoding MP3; to Play
[0047] In yet another of its aspects the present invention
contemplates MP3 Encoding simultaneously With reading a
CD-ROM (for Where the audio Wave form that is MP3
encoded originally comes) and Writing a HDD (to Where the
MP3 encoded code Words ultimately go). Alternatively, and
complimentarily, the present invention contemplates reading
a HDD of MP3 code Words, and decoding the MP3 code
Words so read. The process sequence is not novel; any
Pentium-class (Pentium is a trademark of Intel Corporation)
computer or equivalent running a multi-tasking operating
system Would be expected to be able to accomplish as much.
[0048] HoWever, the a portable CD-ROM and MP3
player-recorder in accordance With the present invention
accomplishes as much With no microprocessor/processor
and no operating system at all.
[0049] The present invention is embodied in a method and
an apparatus for, on the one hand, 1) ?rst-converting at a ?rst
Nov. 21, 2002
US 2002/0171567 A1
time successive ?rst-bit-length ?rst-encoded ?rst digital
Words to a ?rst analog signal, and 2) ?rst playing at the ?rst
time this ?rst analog signal through speakers or headphones
necessary conversions are soon done. Even then, hoWever,
the neWly encoded MP3 data is not put onto the HDD until
a suf?cient accumulation thereof Warrants spinning up, and
or the like to the human ear, should be conducted simulta
Writing, the HDD.
neously With, on the other hand, 3) second-encoding and
re-digitiZing, preferably at the ?rst time, this ?rst analog
[0057] 5. Computerless High-speed Transfer of MP3 Files
signal into a successive second-bit-length second-encoded
BetWeen Like MP3 Player-recorders
second digital Words, and 4) storing these second digital
Words. The 1) ?rst-converting is preferably of ?rst digital
[0058] The present invention contemplates support for the
high speed transfer of MP3 ?les betWeen like MP3 player
Words read from a CD-ROM. The simultaneous 3) second
recorders, normally over Universal Serial Bus (USB) or an
infrared link or a like communications link, by, primarily,
encoding and re-digitiZing of the second digital Words is
preferably in the MP3 format, With these MP3 format second
digital Words stored in a volatile memory of, most prefer
ably, the FLASH, DRAM or SRAM types.
[0050] In a complementary usage, and application, the
same method, and apparatus, is adaptable to simultaneously
1) read successive MP3 encoded digital Words from a HDD
into a buffer memory, 2) decode the MP3 encoded disk
Words read from the buffer memory into an analog signal,
and 3) play this analog signal through speakers or head
phones or the like to the human ear.
[0051] 4. Retrospective Selection of Songs for Recordinq
[0052] The present invention yet still further contemplates
the use of a buffer. As in other aspects of the present
invention, the versatile buffer memory of the present inven
tion permits that processes not precisely eXactly synchro
niZed nor at the same rate may nonetheless transpire on a
handshake, request-acknowledge, basis to move copious
amounts of (MP3) information in short time and, equally
importantly, With but minimal use of energy.
[0059] These and other aspects and attributes of the
present invention Will become increasingly clear upon ref
erence to the folloWing draWings and accompanying speci
?cation.
BRIEF DESCRIPTION OF THE DRAWINGS
that selection of songs for recording may be done retrospec
tively, and during play of the songs or even after the songs
[0060] Referring particularly to the draWings for the pur
have been played.
pose of illustration only and not to limit the scope of the
invention in any Way, these illustrations folloW:
[0053] In accordance With the present invention, (1) ?rst
digital data encoding, most typically, a musical Work, nor
mally a song, is read from a CD-ROM, (2) converted to an
analog signal, (3) played through speakers or headphones or
the like to the human ear, (4) second-encoded and re
[0061] FIG. 1 is a schematic diagram of the preferred
embodiment of a portable combination CD/ROM and MP3
recorder-player in accordance With the present invention.
[0062] FIG. 2a is the schematic diagram of the preferred
digitiZed into second digital data, and (5) stored in a buffer
memory of greater capacity than is the collective second
embodiment of a portable combination CD/ROM and MP3
digital data of the song; all Within a CD-ROM and MP3
previously seen in FIG. 1 marked so as to highlight certain
player-recorder. Conditional upon
predetermined settings
by a human user of the CD-ROM and MP3 player-recorder,
and/or (ii) intervention by the human ruler to overrule the
recorder-player in accordance With the present invention
paths involved in the “play, and record from analog” opera
tional mode of the player-recorder.
predetermined settings, (iii) the second digital data associ
[0063] FIG. 2b is the schematic diagram of the preferred
ated With an individual musical Work, or song, either Will or
embodiment of a portable combination CD/ROM and MP3
Will not be moved from the (5) buffer memory to be (6)
recorder-player in accordance With the present invention
stored in a mass memory, preferably a Winchester disk. The
previously seen in FIG. 1 marked so as to highlight certain
time that the second digital data is resident in the buffer
paths involved in the “play, and record from digital” opera
tional mode of the player-recorder.
memory accords the human user a WindoW of opportunity to
accept or reject, instigate or deny, recording of the individual
[0064] FIG. 3 is the schematic diagram of the preferred
musical Work, or song.
embodiment of a portable combination CD/ROM and MP3
[0054]
5. High-speed RIP of a CD/ROM
recorder-player in accordance With the present invention
previously seen in FIG. 1 marked so as to highlight certain
[0055] The present invention yet still further contemplates
paths involved in the “playback of MP3 from the hard disk”
the high-speed rip of a CD/ROM into MP3 format ?les
operational mode of the player-recorder.
stored upon a HDD. AmaZingly, this is realiZable in a
portable, battery poWered, combination CD-ROM and MP3
[0065] FIG. 4 is the schematic diagram of the preferred
player-recorder
embodiment of a portable combination CD/ROM and MP3
[0056]
In the ?rst place, since the CD-ROM must be, and
previously seen in FIG. 1 marked so as to highlight certain
is, spun at 4x to 6x normal speed, it uses even more energy
paths involved in the “program mode MP3 data interchange”
operational mode of the player-recorder.
than normal. In accordance With the poWer management
aspects of the present invention, a large buffer memory
prevents that the CD/ROM is unduly often, or unduly long,
spun. This same buffer memory noW serves a neW purpose
of holding the ISO format CD/ROM digital Words until,
upon conversion to audio or directly in digital format, they
are converted into MP3 format. Luckily the MP3 encoder(/
decoder) chip runs in eXcess of real time play rates, and
recorder-player in accordance With the present invention
DESCRIPTION OF THE PREFERRED
EMBODIMENT
[0066] The folloWing description is of the best mode
presently contemplated for the carrying out of the invention.
This description is made for the purpose of illustrating the
Nov. 21, 2002
US 2002/0171567 A1
general principles of the invention, and is not to be taken in
access to the “keyboard” and “display” functions of the
a limiting sense. The scope of the invention is best deter
audio player. This system incorporates a main menu/sub
mined by reference to the appended claims.
menu structure.
[0067] Although speci?c embodiments of the invention
[0074] The Main Menu Selections are: 1) Play, 2) Record,
3) Favorites, 4) Radio, and 5) Sound. Selection among these
Will noW be described With reference to the draWings, it
should be understood that such embodiments are by Way of
example only and are merely illustrative of but a small
number of the many possible speci?c embodiments to Which
the principles of the invention may be applied. Various
alternatives preferably gives rise to 1) an associated alpha
numeric display of at least 2 lines, plus 2) an indication that
“time” can be selected, and incremented/decremented, by
user manipulation of a physically proximate associated front
changes and modi?cations obvious to one skilled in the art
to Which the invention pertains are deemed to be Within the
panel button/control, plus 3) an indication that “sub-com
spirit, scope and contemplation of the invention as further
de?ned in the appended claims.
of another physically proximate and associated front panel
[0068]
The music and audio recorder/player system, or
device, in Which the present inventions are embodied incor
porates a CD Drive, (ii) a Hard Disk Drive (HDD) storage
mands” can be selected, and entered, by user manipulation
button/control, and 4) an indication that the other selections
1)-3) can be “locked”, and acted upon, by user manipulation
of yet another physically proximate and associated front
panel button/control. In simplest terms, selection from the
main menu does no more than adapt the user interface to
device, (iii) a high-speed volatile semiconductor memory,
prompt the user to select, and to make, still further control
and (iv) a user interface.
inputs.
[0069]
In use a human operator takes a standard audio CD
and inserts it into a standard CD reader only device. Through
this device the operator using the operating interface selects
[0075] For example, the preferred “time” sub-menu dis
plays “?—/+?”, With obvious effect upon user manipulation.
either one song, or all songs, to be played from the CD. After
song selection the songs are played—Which, in a manner
opaque to the user, involves decoding the ISO standard
[0076] For example the preferred “lock” sub-menu dis
plays “?/? Store”, With obvious consequences should the
user activate the corresponding button/control/.
digital code Words of the CD, and producing an analog Wave
form that is transduced into audible sound—concurrently
commands. Should 1) Play be selected on the main menu,
that the songs are ultimately stored to a Hard Disk Drive
(HDD). Although a HDD of a conventional, Winchester,
type currently (circa 2001) bene?ts from a much greater
storage capability than alternative non-volatile memory
products (such as are available from SanDisk and others),
[0077]
By far the most complex sub-menu is that for
then the Play commands submenu then appearing Will
preferably shoW a series of alternatives: Play ?, Stop |, Fast
FWd >, Reverse <, Track ForWard >>, Track Back <<, and
Pause #.
cal environments Where the more fragile HDD may be
[0078] Should 3) Favorites be selected on the main menu,
then the Record commands sub-menu then appearing Will
preferably shoW a series of alternatives: Deejay random
damaged.
play, Play-List, Last, Add, and Delete.
alternative stores can be used in place of the HDD. Such
alternatives are, in fact, preferred in extremely harsh physi
[0070]
compressing
Alsothe
opaque
analogto Wave
the user,
fromthis
intostorage
MP3 format
involvescode
Words, (ii) storing these code Words in a buffer memory, and
then, When most typically several songs have been stored in
the buffer, (iii) Writing all, or such of the songs as are then
selected, to the HDD.
[0071] Accordingly, When the user-operator Wishes to hear
a song, then he/she chooses the song from an operator
interface play list. After the song is chosen the song ?le is
uploaded to a volatile solid-state memory, and since this
memory is solid state the song ?le may be played With no
interference from any vibration. The playing of the song
from the CD involves converting it from a digital format to
an analog signal, and sending the analog signal to an audio
preampli?er and, ultimately, to speakers or to headphones.
The operator has a choice When ?rst selecting songs from the
CD to either doWnload to the hard drive in real-time (While
the song is playing) or at a speed of 5 to 1 With no audio
playback. Operation of the recorder/player device does not
require any presence, or operational knoWledge, of a per
sonal computer, the device operating essentially the same as
a standard audio CD player.
[0072]
1. User Interface and Logic Control Circuit
[0073] Control of the components is achieved through a
proprietary logic control and user interface that provides
[0079] Similarly, should 4) Radio be selected on the main
menu, then the Radio commands sub-menu then appearing
Will preferably shoW a series of alternatives: AM, FM, Tune
—/+ With sub-sub-menus Scan </> and Seek <</>>, and
Memory With sub-sub-menus Add + and Del —.
[0080] Finally, should 5) Sound be selected on the main
menu, then the Sound commands sub-menu then appearing
Will preferably shoW a series of alternatives: EQ equaliZer,
Bass —/+, Treble —/+, Balance —/+, Fader —/+, and Memory.
[0081]
2. Preferred Embodiment of a Portable Combina
tion CD/ROM and MP3 Recorder-Player in Accordance
With the Present Invention
[0082]
FIG. 1 is a schematic diagram of the preferred
embodiment of a portable combination CD/ROM and MP3
recorder-player in accordance With the present invention.
[0083] The elements of the recorder-player beloW the
horiZontal dashed line are substantially pre-existing and
conventional; the added elements of the present invention
are substantially shoWn above the horiZontal dashed line.
BeloW the horiZontal dashed line a Motor Driver 12, pref
erably type MM1538 or FAN8038, poWers rotation of a
CD-ROM (not shoWn) so that a Servo 11, preferably type
CXA2550, CXD3068 OPU(KSM900), under control of a
Micro-controller 13, Will deliver, during rotation of the
CD/ROM digital data in the form of ISO CD/ROM code
Nov. 21, 2002
US 2002/0171567 A1
Words to the digital signal processor MP3 DSP 14, prefer
of
ably type RSM88131A or TR2101. The entire CD mecha
through Radio Transmitter 18a'1 and antenna 18a'2 via a loW
nism may be, for example, Sanyo type DA23.
poWer radio signal (preferably FM) to a proXimate radio (not
shoWn) for reception and play through the sound output
[0084] The digital data from the CD/ROM is buffered in a
memory SD RAM 16, preferably of siZe 4M Words of 16 bits
each (NOTE: this buffer memory should not be confused
Headphone 18a, and/or (ii) Speaker 18c1, and/or (iii)
system of the radio.
With the buffer Memory 32). Decoded digital data—repre
[0090] MeanWhile the MP3 encoded data from the MP3
Encoder/Decoder is sent to the MPU 31 Where it essentially
senting an audio Wave form—from the MP3 DSP goes to
undergoes the same treatment as it Was previously. Namely,
audio digital-to-analog converter DAC 15, preferably type
it is passed ?rst to the buffer Memory 32 and then, When the
buffer Memory 32 becomes ?lled, the MP3 data is moved en
masse through and by the MPU 31 to the Hard Disk 30,
Where it is stored.
WM8725 or AK4352, and also to MP3 Encoder/Decoder 34
Which is a neW chip type YMPC-3001 from Yountel of
Korea further discussed elseWhere in this speci?cation.
[0085] MeanWhile, an audio signal from the DAC 15 goes
to audio companding de-companding circuit Audio CODEC
33, preferably type UDA1342TS from Philips.
[0086] The elements added to this base structure of a
CD/ROM reader in order to realiZe the combination
CD/ROM and MP3 recorder-player in accordance With the
[0091] Accordingly, at the conclusion of the “play, and
record from digital” operation, the audio CD/ROM has
again been played, and MP3 encoded data in respect of the
contents thereof the CD/ROM has again become lodged on
the Hard Disk 30.
[0092] Both the “play, and record from analog” opera
present invention are neXt introduced in the conteXt of the
tional mode illustrated in FIG. 2a, and, more preferably, the
functions that, at various times and under various user/
operator control, that these elements serve to perform. One
in
audio
FIG.play
2b can
is be
disabled
replicated
and,in as
a “Program”
a consequence
mode Where
that the
function, and operational mode, of the combination
CD/ROM and MP3 recorder-player is called “play, and
record from analog”. The paths, and the related elements,
primary in this operation are highlighted in darkened line in
“play, and record from digital” operational mode illustrated
information ultimately retrieved from the CD/ROM need not
be played in real time, (ii) the entire process of MP3
FIG. 2a. The audio signal from the DAC 15 received in
Audio CODEC 33 is directly routed to Ampli?er 40 of
encoding and storage may be run faster, essentially as fast as
the Weakest link in the chain of reads, decodes and/or
conversions, and Writes Will run. Normally the Weakest link
nominal 12 db gain, and then to Headphone Amp 17, and
is the CD/ROM, Which is then spun at 4x to 6x normal
then for play to any of
Headphone 18a, and/or (ii)
Speaker 18c1, and/or (iii) through Radio Transmitter 18a'1
cuits of the CODEC 33, it is -preferred that the MP3 encoded
and antenna 18a'2 via a loW poWer radio signal (preferably
speed. Because of settling time in the de-companding cir
data be developed in and by the “record from digital”
FM) to a proximate radio (not shoWn) for reception and play
operational mode.
through the sound output system of the radio. MeanWhile
this audio signal is also passed through the Audio CODEC
[0093] The entire purpose of logging MP3 data to the Hard
Disk 30 has been, or course, to provide for later retrieval and
33 to the MP3 Encoder/Decoder 34 Where it is encoded to
MP3 code, preferably at a 24 bit code Word bit length.
play. The path for so doing is high-lighted in FIG. 3, Which
[0087] The MP3 encoded data is passed though the ?le
management unit MPU 31—a custom chip for Which may be
substituted for purposes of the present invention a micro
processor—?rst to the buffer Memory 32, Which is prefer
ably of the FLASH or DRAM types. When the buffer
Memory 32, Which is preferably 64K or larger in siZe,
becomes ?lled, then its contents (such as are then selected
for permanent recording) are moved en masse through and
by the MPU 31 to the Hard Disk 30, Which is preferably of
the Winchester type, and is more preferably a magnetic disk
of 10 Gbyte or greater capacity.
[0088] At the conclusion of the “play, and record from
analog” operation, the audio CD/ROM has been played, and
MP3 encoded data in respect of the contents thereof the
CD/ROM lodged on the Hard Disk 30
[0089] Another, similar, function, and operational mode,
of the combination CD/ROM and MP3 recorder-player is
called “play, and record from digital”. The paths, and the
related elements, primary in this operation are high-lighted
in darkened line in FIG. 2b. The digital signal (re?ective of
is the same schematic diagram of the preferred embodiment
of a portable combination CD/ROM and MP3 recorder
player in accordance With the present invention previously
seen in FIG. 1 noW marked so as to highlight certain paths
involved in the “playback MP3 from hard disk” operational
mode of the player-recorder. During playback the MP3 data
from the Hard Disk 30 is eXtracted to, through, and by the
MPU 31 to the buffer Memory 32. The MPU 31 also serves
to issue successive MP3-encoded data Words to the MP3
Encoder/Decoder 34 noW acting as an MP3 decoder. The
MP3 data decoded to a companded and encoded audio signal
is sent to the Audio CODEC 33 Where it is de-companded
and further decoded to produce the pure audio signal sent to
the Ampli?er 40. As is by noW understood, the path of the
audio signal from the Ampli?er 40 ultimately permits that it
is transduced to sound in, by Way of eXample, Headphone
18a.
[0094] The portable combination CD/ROM and MP3
recorder-player in accordance With the present invention
may transfer MP3 data to a like unit—normally over a
Audio CODEC 33 and then to the Ampli?er 40 and so on,
code-Word or otherWise protected proprietary transfer-level
protocol-protected interface—to an identical, or like, unit.
The path for so doing is highlighted in FIG. 4. MP3 data
from the Hard Disk 30 is transferred by action of MPU 31
to be buffered in buffer Memory 32 and then, as called for
by Display/Keyboard Processor 35—Which manages the
meaning to the Headphone Amp 17, and then for play to any
Universal Serial Bus 38a, or the Infrared Transceiver 38b for
an analog audio Wave form) from the MP3 DSP 14 bypasses
Audio CODEC 33 and is sent to MP3 Encoder/Decoder 34.
The decoding of this signal to analog audio is sent to the
Nov. 21, 2002
US 2002/0171567 A1
purposes of data transfer to the other device—to the Display/
Keyboard Processor 35 and to the Duplicate Unit 1a over, by
card or other physical devices. Digital equalization may be
selected from among classical, jaZZ, pop, rock, and techno
Way of example, a Universal Serial Bus 38a or an Infrared
digital bass settings.
Transceiver 38b.
[0095]
Needless to say, this transfer can be very fast, up to
[0102]
The decoding capabilities of the YMPC-3001 are
based on a 24 bit, 44.1 KhZ sampling A/D Converter adopted
10 Mbits/second. Accordingly large numbers of tracks of
to accept an analog audio input signal With the digital output
musical Works Which are stored in MP3 (or related) com
pressed format on the Hard Drive 30 of one unit may be
transferred
in gross, (ii) in accordance With a “transfer
code Words being stored to and in a Flash memory or smart
list” analogous to a “play list”, (iv) as differing in title, or (v)
[0103] Optional functions available for the YMPC-3001
include a USB interface, an ECP interface, digital input(s),
track by track under user control, to the Hard Drive 30 of the
other unit. The transfer mode (iv) is especially poWerful,
card of the like. During use for voice recording the MP3
format is used With a fs=16 KhZ Mono/16 KBps.
a Smart Card interface, and a Flash media interface.
permitting a user/operator/oWner With a virgin Hard Drive
but access to another fully populated CD/ROM and MP3
recorder-player in accordance With the present invention
(such as might be oWned by a friend) to load large numbers
of musical Works, typically up to the approximately 1200
that Will ?t Within a 10 Gbit disk storage, to his/her unit in
variations and adaptations of the combination CD-ROM and
MP3 recorder/player in accordance With the present inven
tion Will suggest themselves to a practitioner of the data
mere minutes.
and playback, arts.
[0096] Additional elements shoWn in the schematics of
FIGS. 1-4 Will be substantially self-explanatory to a prac
titioner of the electronic music system design arts. PoWer is
With any mass memory store, as previously discussed.
[0104] In accordance With the preceding explanation,
compression and decompression, and the audio recording
[0105] For example, the Hard Disk 30 could be replaced
normally supplied through three separate options: 1) 110
[0106] For example, the MP3 encoding format (or more
completely MPEG-1/2 Layer-3) is just one data compression
220 volt a.c. input, 2) a battery jack, or 3) batteries. Inputs
to the Audio CODEC 33, and associated operational modes,
are provided to digitaliZe (to MP3 format) and record audio
player/recorder device, of the present invention. The player/
information both from a Radio 42a (using an antenna 42b)
and a Microphone 43. The Keyboard/Keypad Processor 35
manages the poWer selection and control, and the operator
interface via the Keypad 37 and the Dot Matrix Display
Module 36. An output port for the audio signal is provided
through plug jack Line Out 39.
[0097]
2. The Preferred MP3 Encoder/Decoder
[0098] The MP3 Encoder/Decoder 34 is type YMPC-3001
made by Yountel corporation of Korea, appearing on the
World Wide Web at WWW.yountel.com <http://WWW.youn
tel.com>, supported by technology of the Control and Mea
format that can be used With the methods, and in the
recorder of the present invention Will bene?t from use of the
neW (circa 2001) WMA encoding format (as encoding
hardWare becomes available) due to its even greater data
compression (the corresponding song ?les siZe is smaller)
and greater audio quality. It is safe to predict that there Will
be still other advances in encoding technology, and the
present invention Will bene?t from these advances by simple
upgrade of the encoding/decoding IC’s as they become
available.
[0107] According to these differences in mere terminol
ogy, the named elements and process steps of the folloWing
claims should be broadly interpreted.
sure Engineering Department of Young KANGWON Uni
[0108]
versity, Korea.
possible variations and adaptations of the present invention,
Moreover, in accordance With these and other
[0099] The MP3 Encoder/Decoder 34 produces MP3
dance With the folloWing claims, only, and not solely in
the scope of the invention should be determined in accor
encoding at 24 bits, and decodes MP3 codes up to 24 bits.
accordance With that embodiment Within Which the inven
It can encode analog sound to an MP3 ?le in real time. It has
tion has been taught.
the same sampling frequency as a CD (i.e., 44.1 KHZ) With
24-bit grade-level Digital Signal Processing (DSP) core
heretofore this chip believed by the manufacturer thereof
(i.e., Yountel) to have been realiZed only at the laboratory
level, and never in a commercial product.
What is claimed is:
1. A method, performed in a combination CD-ROM and
[0100]
recording sound comprising:
The YMPC-3001 has 3.3 V digital circuitry; a
serial audio interface in the ESAI standard; a MICOM
Interface; and a byte-Wide parallel host interface. The poWer
consumption is 85 mA for encoding (nominal mode) and 40
mA for decoding (nominal mode), With a doWered doWn
consumption of <100 uA in Stop Mode. The chip control
accepts a Sync Recording ON/OFF signal. The chip is
basically a 24-bit high-performance digital signal processor
built into a 144-pin plastic TQFP package.
[0101] The decoding capabilities of the YMPC-3001
include MPEG 1 Layer 3 and MPEG 2 Layer 3 bit streams,
24-bit D/A Convertor adopted. For bitstream decoding, the
bitstreams can be transmitted from Flash memory, smart
MP3 or other digital compression format recorder/player, of
playing a CD-ROM by
?rst-decoding ?rst digital Words of n bits each Word
encoded in the CD-ROM ISO or any other standard
storage format into a ?rst audio Wave form, and
converting the ?rst audio Wave form to sound; While
encoding and digitiZing the ?rst audio Wave form into
MP3 format second digital Words of m bits each Word,
m>n, and storing the second digital Words in a memory.
2. The method according to claim 1 Wherein m=16 and
n=24.
Nov. 21, 2002
US 2002/0171567 A1
3. The method according to claim 1 further extended and
expanded to, at a time after the storing of the second digital
Words in the memory, further comprises:
reading the second digital Words from the memory;
second-decoding the second digital Words into a second
audio Wave form; and
converting the second audio Wave form to sound.
4. A combination CD-ROM and MP3 or other digital
compression format recorder/player comprising:
a reader of ISO or any other standard storage format ?rst
digital code Words of n bits each Word from a CD
ROM;
a ?rst decoder ?rst-decoding the ?rst digital code Words
of n bits each Word into a ?rst audio Wave form;
an audio transducer converting the ?rst audio Wave form
to sound;
an encoder and digitiZer decoding and digitiZing the ?rst
audio Wave form into MP3 format second digital Words
of m bits each Word, m>n; and
a memory storing the second digital Words.
5. The combination CD-ROM and MP3 or other digital
compression format recorder/player according to claim 4
further comprising:
a reader of the second digital code Words from the
memory; and
a second decoder second-decoding of the second digital
Words into a second audio Wave form;
Wherein the audio transducer also converts the second
audio Wave form to sound.
6. A method of conserving poWer in a combination
CD-ROM and MP3 or other digital compression format or
other digital compression format recorder/player, the
method comprising:
playing a rotating CD-ROM containing a plurality of
musical Works by
?rst-decoding ?rst-format ?rst digital Words encoded in
the CD-ROM into a ?rst audio Wave form, and
converting the ?rst audio Wave form to sound; While
encoding and digitiZing the ?rst audio Wave form into
second-format second digital Words;
storing so many of the second digital Words as represent
at least a complete one of the plurality of musical Works
into a semiconductor memory; and then, When and only
When at least one complete musical Work is stored in
the semiconductor memory,
poWering up a rotating disk to spin up to recording speed,
and recording the at least one complete musical Work
from the semiconductor memory to the rotating disk,
Whereupon the rotating disk is poWered doWn;
7. The method of conserving poWer according to claim 6
further extended and expanded to, at a later time than the
recording, further comprise:
poWering up the rotating disk to spin up to reading speed,
and transferring at least one complete musical Work
from the rotating disk to the semiconductor memory to
the rotating disk, Whereupon the rotating disk is poW
ered doWn;
reading the second digital Words from the semiconductor
memory;
second-decoding the second digital Words into a second
audio Wave form;
converting the second audio Wave form to sound; and
continuing With poWering up the rotating disk and the
transferring, folloWed by the reading and the second
decoding and the converting, as becomes periodically
required to play successive musical Works from the
rotating disk;
Wherein, nonetheless to storing so many second digital
Words as represent at least a complete one of the
plurality of musical Works, the rotating disk is not
continuously rotating during playing of the at least one
musical Work, and to that extent saves poWer.
8. A poWer-conserving combination CD-ROM and MP3
or other digital compression format recorder/player com
prising:
a CD-ROM containing a plurality of musical Works;
a ?rst decoder ?rst-decoding ?rst digital Words encoded in
the CD-ROM into a ?rst audio Wave form;
a converter converting the ?rst audio Wave form to sound;
an encoder/digitiZer digitiZing and encoding the ?rst
audio Wave form into second digital Words;
a solid state memory storing so many of the second digital
Words as represent at least a complete one of the
plurality of musical Works;
a rotating disk controllable to record at least one complete
musical Work from the semiconductor memory; and
a disk poWer controller for spinning up the disk to
recording speed for purpose of recording from the
memory second digital code Words representing the at
least one musical Work, and for thereafter poWering
doWn the rotating disk;
Wherein the disk is not continuously rotating during the
converting of the ?rst audio Wave form to sound, and
the digitaliZing and the encoding, and thus saves poWer.
9. A method of conserving poWer in a combination
CD-ROM and MP3 or other digital compression format
recorder/player, the method comprising:
performing MP3 encoding in an MP3 encoder Without
reference to any instructions or microcode stored in any
memory;
Wherein the disk is not rotating during a portion of the
storing in a solid state buffer memory so many MP3
playing, the encoding and digitaliZing, and the storing,
codes, as and When produced by the MP3 encoder, as
represent a complete musical Work; and
and thus saves poWer over a constant rotation.
Nov. 21, 2002
US 2002/0171567 A1
spinning up a read-Writable disk memory, then Writing the
MP3 codes from the solid state buffer memory to the
disk memory, and then powering doWn the disk
memory;
matter of semantics as to What chips and devices are
called, but is rater a matter that references to any
memory, and particularly a rotating disk memory, are
avoided, thus saving poWer.
Wherein the disk is not continuously rotating during the
12. Amethod of recording in a combination CD-ROM and
MP3 encoding and thus saves poWer.
10. The method the method according to claim 9 Wherein
the MP3 or other digital compression format encoder chip is
also a decoder chip, the method further comprising:
MP3 or other digital compression format recorder/player,
the method comprising:
spinning up the read-Writable disk memory, Writing the
MP3 codes from the disk memory to the solid state
buffer memory, and poWering doWn the disk memory;
storing in the solid state buffer memory so many MP3
codes, as and When read from the disk memory, as
represent a complete musical Work; and
performing MP3 decoding in the MP3 encoder-decoder
on the MP3 codes stored in the buffer memory Without
reference to any instructions or microcode stored in any
memory;
Wherein the disk is not continuously rotating during the
MP3 decoding and thus saves poWer.
11. In a combination CD-ROM and MP3 or other digital
compression format recorder/player
playing a CD-ROM by
reading ?rst digital code Words from a CD-ROM,
?rst-decoding the ?rst digital Words into a ?rst audio
Wave form, and
converting the ?rst audio Wave form to sound; While
encoding and digitiZing the ?rst audio Wave form into
second digital Words, and, ultimately,
storing the second digital Words in a disk memory, a
method of conserving poWer comprising:
performing the ?rst-decoding, and also the encoding and
digitaliZing, entirely Within one or more chips Without
reference to any memory to retrieve any instructions or
microcode,
meaning that neither the ?rst-decoding nor the encod
ing can be performed by a microprocessor that by
de?nition processes microinstructions lodge in some
memory,
reading at a ?rst time successive ?rst-encoded ?rst digital
Words from a CD-ROM;
decoding at the ?rst time the successive ?rst-encoded ?rst
digital Words into a ?rst analog signal;
transducing at the ?rst time this ?rst analog signal into
audible sound;
encoding and digitiZing at the ?rst time the ?rst analog
signal into a successive second-encoded second digital
Words;
storing these second digital Words in a solid state memory
until at least one entire musical Work is stored in the
solid state memory;
presenting to a user of the combination CD-ROM and
MP3 recorder/player an opportunity to save or reject
saving the at least one entire musical Work; and
IF the user rejects any saving of the at least one entire
musical Work THEN returning immediately to the
reading, the decoding, the encoding and digitaliZing,
and the storing ELSE IF the user selects saving of the
at least one entire musical Work THEN moving second
digital code Words associated With the musical Work to
a Writable disk and thereafter returning immediately to
the reading, the decoding, the encoding and digitaliZ
ing;
Wherein the user is able to select saving of the at least one
musical Work on the Writable disk at a time after the
transducing of the Work into audible sound.
13. A method of extracting digital ?les upon a CD/ROM
into MP3 format ?les stored on a hard disk drive, the method
comprising:
reading digital data from a CD-ROM at greater than
normal CD/ROM play speed;
the one or more chips being called encoder or decoder
or encoder/decoder chips as the case may be; plus
moving encoded and digitaliZed second digital Words
from the one or more chips to the disk memory Without
use of any device making reference to any memory for
any instructions or microcode as to hoW to effectuate
this moving,
meaning that moving cannot be performed by a micro
processor that by de?nition processes microinstruc
tions lodged in some memory,
a device performing the moving being a state machine
called a ?le transfer device;
Wherein the importance, and distinguishing characteristic,
that encoding/decoding processes normally performed
by a microprocessor is not so performed is not a mere
?rst-buffering the read digital data in a ?rst buffer
memory;
encoding in an MP3 encoder chip at greater than real-time
play rates information from or derived from the digital
data of the ?rst buffer memory into MP3 ?les;
second-buffering the encoded MP3 ?les in a second buffer
memory; and
Writing in batches, at combined rates greater than real
time play rates, the encoded buffered MP3 ?les from
the second buffer memory onto a hard disk drive;
Wherein the transfer from the CD-ROM to, ultimately, the
disk drive is at rates, in aggregate and on average,
greater than the real-time play rate.
Nov. 21, 2002
US 2002/0171567 A1
14. The method according to claim 13 wherein the ?rst
buffering and the second-buffering are into a same buffer
memory.
15. A method of transferring MP3 or other digital com
pression format ?les directly betWeen MP3 player-recorders
comprising:
reading MP3 data from the hard disk drive of a ?rst MP3
player-recorder into a buffer memory of the ?rst player
recorder;
transferring MP3 data from the ?rst player-recorder’s
buffer memory across a communications channel to a
like buffer memory of a second MP3 player-recorder;
and
Writing MP3 data from the second player-recorder’s
buffer memory to a hard disk drive of the second MP3
player-recorder;
Wherein no computer processor is anyWhere involved to
manage, perform or in any Way contribute to any of the
reading and the transferring and the Writing.
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