Recording rate automatic setting recording device and recording

Recording rate automatic setting recording device and recording
US007136573B2
(12) United States Patent
(10) Patent N0.:
(45) Date of Patent:
Kikuchi et al.
(54)
RECORDING RATE AUTOMATIC SETTING
RECORDING DEVICE AND RECORDING
RATE AUTOMATIC SETTING RECORDING
METHOD
6,584,272 B1*
6,671,454 B1*
EP
EP
Hideo Kataoka, Tokyo (JP); Kazuya
Fujita, Kawasaki (JP)
(73) Assignee: Kabushiki Kaisha Toshiba, Tokyo (JP)
Notice:
Nov. 14, 2006
Fukushima et a1. ......... .. 386/46
Kaneko et a1. ............. .. 386/83
FOREIGN PATENT DOCUMENTS
(75) Inventors: Shinichi Kikuchi, Yokohama (JP);
(*)
6/2003
12/2003
US 7,136,573 B2
Subject to any disclaimer, the term of this
patent is extended or adjusted under 35
U.S.C. 154(b) by 1200 days.
0 802 682 A1
0 942 416 A2
10/1997
9/1999
JP
8-017137
JP
JP
JP
JP
JP
JP
8-17137
10-134551
11-39850
11-176096
11-316703
2000-333169
*
1/1996
5/1998
2/1999
7/1999
11/1999
11/2000
1/1996
W0
W0 9222983
* 12/1992
OTHER PUBLICATIONS
(21) App1.No.: 09/986,161
European Search reported dated Feb. 16, 2006 for Appln. No.
(22) Filed:
Nov. 7, 2001
(65)
Primary ExamineriThai Tran
Assistant Examiner4Gelek Topgyal
May 9, 2002
Foreign Application Priority Data
(30)
Nov. 8, 2000
(52)
* cited by examiner
Prior Publication Data
US 2002/0054754 A1
(51)
011264389.
(74) Attorney, Agent, or FirmiPillsbury Winthrop ShaW
Pittman LLP
(JP)
........................... .. 2000-340912
(57)
Int. Cl.
H04N 5/76
H04N 7/00
H04N 7/06
H04N 7/08
(2006.01)
(2006.01)
(2006.01)
(2006.01)
H04N 7/52
H04N 5/85
(2006.01)
(2006.01)
US. Cl. .......................... ..
A recording rate automatic setting recording device Which,
a microcomputer block, detects a recording time on the basis
of recording reservation information, and detects an entire
capacity and a remaining capacity of a ?rst recording surface
of an information recording medium, and assumes that a
capacity Which is at least half of the entire capacity of the
?rst recording surface is a remaining capacity of a second
386/83; 386/46; 386/95;
386/125; 725/58
(58)
Field of Classi?cation Search ................ ..
recording surface of the information recording medium, and
calculates an entire remaining capacity by adding together
the remaining capacity of the ?rst recording surface and the
remaining capacity of the second recording surface, and sets
386/46,
386/125, 126, 83, 95; 725/58
See application ?le for complete search history.
(56)
ABSTRACT
a recording bit rate from the entire remaining capacity and
a reservation recording time.
References Cited
U.S. PATENT DOCUMENTS
5,737,481 A
7 Claims, 15 Drawing Sheets
4/1998 Gushima et a1.
Recon?ng reservation
information setting
Receive recordng reservation
information by user operation
No
B2
is there
automatic recording bit
rate settling mode
Yes
B3
Both surfaces
No
recording 0K ‘P
Yes
B5
B4
(Set remaining capacity of ?rst
surface+esilmated remaining
Set current
remaining amount/
capacity of second surfacei/
recording time as recording rate
recorning time as
recurring bit rate
I
B6
Store reservation information
lnclut?ng new set recording bit rate
Set reserved
waiting state
U.S. Patent
Nov. 14, 2006
Sheet 2 0f 15
US 7,136,573 B2
FlG.2
( Route )
DVD_RTAV
VR_MAGR.|FO (VMG ?le)
VR_MOV|E.VRO (Movie video file)
VR_STlLL.\/RO (Still picture video file)
VR_AUDIO.VRO (Still picture audio video file)
VR_MANGR.BUP
U.S. Patent
Nov. 14, 2006
(
Sheet 3 0f 15
Video object set (VOBS)
Video object
Video object
Video object
Video object
VOB_lDNl
VOB_lDN2
VOB_lDN3
VOB_lDNn
(A)< 1
\
US 7,136,573 B2
______________________________ __
Video object unit
Video object unit
Video object unit
VOBU
VOBU
VOBU
RDl
V
V
A
V
SP
pack
pack
pack
pack
pack
pack
Sequence
header
[ Sequence
GOP data
GOP data
I
l
1
I
I
V pack
(B) <
V pack
V pack
V pack
V pack
V pack
Sequence
header
SHC
HS
VS
PAR
PR
M
BRB
VB
S
CP
Ll
FQ
SHC: Sequence header
HS: Number of longitudinal lines of pixels
VS: Number of transverse lines of pixels
\ PAR: Aspect ratio
\\
J
Y
FlG.3
U.S. Patent
Nov. 14, 2006
‘
Sheet 4 0f 15
US 7,136,573 B2
2048 bytes
hpagk
ea er
Aspect rate
iystggn
ea r
Packet header
stream iD=0><bf
(private stream 2)
>
subsigeam
($2
RD! GI
DCI
MNF!
Reserved
DCI
Reserved
Reserved
Film camera mode
Subtitle mode
Aspect rate : 0000=4 :3
0001=t6 I 9
0010=16 : 9 (Letter box (top))
H01=16 : 9 (Letter box (center))
U.S. Patent
Nov. 14, 2006
Sheet 5 of 15
VMG
RTR_VMG
UD_PGClT
UD_PGClTl
M_AVFIT
UD_PG_SRP#l
ORG_PGCl
S_AVFIT
UD_PGCIT
UD_PGC_SRP#n
TXTDT_MG
UD_PGCl#l
MNFlT
UD_PGCl#m
US 7,136,573 B2
PGCl
PGCLGI
PGlT (PGl#l -Pc|#n)
CLSPRT (Cl_SRP#l -Cl_SPR#n)
ClT(Cl#l-Cl#j)
> Cl#j
C_Gl 4*
RBP
OtoO
l tol
Contents
Number of bytes
Reserved
C_TY
00:Movie cell,
20 (h) : Stlll picture cell
2to 3 C_EPl_Ns Search pointer number of VOBI
4to 5 C_EPl_Ns Number of entry points
6to ll C_V_S_PTM Playback start time of cell
l2to l7 C_V_E_PTM Playback end time of cell
Total
18 bytes
C_EPl
RBP
OtoO
EP_TY
l to 6 EP_PTM
H0134 PRW_TXTl
\
Contents
OzThere is no PRW_TXTl,
1 :There is PRW_TXT|
Playback time of EP
Text information
Total
Number of bytes
135
_/
U.S. Patent
Nov. 14, 2006
Sheet 6 0f 15
ESN:
1BECm$5UsBCDSZ
if“:E::8MEWSEma?auP
0
Q
833%F
S
61
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Ga
US 7,136,573 B2
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Ga
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MENw#28Us25g5BNzgml3cug2
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m2
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6
i
5
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:
E05$g3:m6?.é2‘1e3%“s?
@E28=8E52
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U.S. Patent
Nov. 14, 2006
Sheet 8 0f 15
US 7,136,573 B2
Disk management information
Disk management information table
Recording reservation information table *
Recording reservation ‘
general information
Dedicated disk or general disk
Recording reservation information number
used at the time of a dedicated disk
Number of recording reservation
information recorded on disk (N)
Recording reservation information 1
Recording reservation information 2
l
l
l
'
l
l
I
IRecording reservation information N
I
Contents of first recording
reservation information
i
Length of information such as program name/title or the like
Program name/title
Preparing date/time of this recording reservation information
Validity/invalidity information of this recording reservation information
Use permission information of this recording reservation information
Recording
Recording
Recording
Recording
mode (recording information amount)
channel information
valid week information from preparing date/time
day of week (repeating) pattern information
Recording
Recording
Recording
Recording
Recording
reservation date
start time
end time
group number
sequence number
Recording failure cause : OO-none, (ll-there is no image signal,
OZ-there is copy prohibition information
FIG.8
U.S. Patent
Nov. 14, 2006
US 7,136,573 B2
Sheet 9 0f 15
Reserved recording
waiting state
operation of canceling
reserved recording waiting state,
or operation of setting new reserved
‘
A2
.
l
recording,
or recording
\
operation?
Turn on all power
sources, and carry
,/
out respective
M
initial set ings
.
One minute
before start of
t.
Receive user
operation, and execute
recording ’?
processing
Set reserved
recording
. .
/A5
waiting state
Turn on ali power sources, and
carry out respective initiai settings
is there
synchronization
signai ?
/A7
Cause of recording
failure of reserved
information = there
is no image signai
___i
Yes
is there
copy prohibition
/A9
Cause of recording
failure of reserved
A10
information = there
a
is copy prohibition
Wait until recording time is reached
information
I’
4
Recording processing
Set reserved
recording
waiting state
a
an
@
U.S. Patent
Nov. 14, 2006
Sheet 10 0f 15
US 7,136,573 B2
Q)
it
Al 2
Is recording
completed ‘?
Both surfaces
recording mode ?
Error
processing
HAM
Disk replacing processing
f
5
Confirm reserved recording information for
which recording is completed, and if there
is no reserved recording thereafter, delete
information from reserved recording
control section, and set recording title at
PGl, and set recording time at VOBI
Is there
still reservation
information '?
Set reserved
Cancel
recording
reserved recording
waiting state
waiting state
U.S. Patent
Nov. 14, 2006
Sheet 11 0f 15
US 7,136,573 B2
Recording reservation
information setting
v
M31
Receive recording reservation
information by user operation
is there
automatic recording bit
rate setting mode
Both surfaces
recording OK ?
(Set remaining capacity of first
surface + estimated remaining
capacity of second surface)/
recording time as recording rate
Set current
remaining amount/
recording time as
recording bit rate
a J
i
v
#55
Store reservation information
including new set recording bit rate
V
Set reserved
recording
waiting state
FlG.ii
U.S. Patent
Nov. 14, 2006
Sheet 12 0f 15
US 7,136,573 B2
Disk replacing
processing
“Currently replacing disk”
/c2
Output disk stop instruction to
drive section
Did processing
end status come from drive
section ?
Set AV data so as to be
stored at HDD buffer section
for each CDA
'
/c5
Output disk replacement
instruction to disk changer
<4)
section
l
:08
L Read management data
Did processing
end status come from
changer section
?
Yes
C7
Was there disk?
[
Determine writing address
1
,cu
Read fife system, read
(or prepare) VMG, prepare
VMG table, etc.
11
[
,JCiZ
Set recording bit rate
@
FlG.l2
U.S. Patent
Nov. 14, 2006
Sheet 13 0f 15
%
US 7,136,573 B2
,JCT3
“There is no disk.
Please insert disk”
NO
HReplacement was not in time.
Recording is stopped”
'
Recording stopping processing
Ciear HDD buffer section
(To usual processing)
,,c1a
U.S. Patent
Nov. 14, 2006
US 7,136,573 B2
Sheet 15 0f 15
Recording failure
displaying processing
H01
7
Read reserved recording information
is there
reserved information having
recording failure flag
?
1
Recording failure
information display
l To usual processing )
Program name :
Channel :
BSHCh
Program name :
BSllCh
Channel :
Because there is no signal,
recording could not carried out.
Because copying is prohibited,
recording could not carried out.
Next page
Next page
V
FlG.l6
US 7,136,573 B2
1
2
RECORDING RATE AUTOMATIC SETTING
RECORDING DEVICE AND RECORDING
RATE AUTOMATIC SETTING RECORDING
METHOD
appeared. The hard disk drive can record data of, for
example, 100 gigabytes or more.
CROSS-REFERENCE TO RELATED
APPLICATIONS
tion on both of a hard disk drive and a DVD are all mass
A hard disk device Which records information on a hard
disk drive, a DVD device Which records information on a
DVD, and a DVD/hard disk device Which records informa
recording devices. These devices can record a large number
of programs, and, for example, it is predicted that recording
This application is based upon and claims the bene?t of
based on recording reservations increases.
priority from the prior Japanese Patent Application No.
Further, in order to precisely realiZe recording reserva
tions, there is the need to precisely recogniZe the remaining
capacity of the disk, and to appropriately set the recording
bit rate in accordance With the remaining capacity. For
2000-340912, ?led Nov. 8, 2000, the entire contents of
Which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
example, if a recording bit rate is set to be high (high
vividness) regardless of the fact that the remaining capacity
1. Field of the Invention
The present invention relates to an information recording
is loW, there are cases in Which a program cannot be
recorded to the end thereof.
Among DVD-RAMs, both surfaces recordable or tWo
device Which can record information onto a hard disk or the
like, and Which can play back the information recorded on
the hard disk or the like, and Which can record information
onto recording media such as a DVD (digital versatile disk)
or the like, and Which can play back the information
recorded on the DVD. In particular, the present invention
relates to a recording rate automatic setting recording device
and a recording rate automatic setting recording method
layer recordable disks have been proposed. Disk manage
20
recording layer is read, and the entire capacity, the recorded
25
(used) capacity, the free capacity, and the like can be knoWn
from the disk management information. HoWever, if there
are a plurality of recording surfaces or recording layers,
although the remaining capacity of one recording surface or
30
the other recording surfaces or recording layers cannot be
Which set a recording bit rate in consideration of recording
capacities of a front surface (?rst recording surface) and a
back surface (second recording surface) of a both surfaces
recordable DVD.
2. Description of the Related Art
In recent years, optical disk playback devices Which
recording layer can be knoWn, the remaining capacities of
knoWn. Therefore, When a recording reservation or the like
handle dynamic images, for playing back optical disks on
Which dynamic images and audio are recorded, have been
developed. These devices, such as, for example, LD, video
CD playback devices or the like, have become popular for
vieWing movie softWare, enjoying karaoke or the like.
Currently, a DVD standard has been proposed Which
is carried out, it is impossible to judge over a plurality of
surfaces Whether the remaining capacity is appropriate or
not for the length of time of the reserved recording program.
35
Simply, When the method is a method Which sets the
40
recording bit rate for the remaining capacity read from a
single surface, if the remaining capacity is loW at the front
surface, regardless of the fact that there is suf?cient remain
ing capacity at the back surface, there are cases in Which the
bit rate is set to be loW and poor image quality recording
utiliZes the MPEG2 (Moving Image Coding Expert Group)
method that has been standardiZed internationally, and
Which utiliZes the AC3 audio compression method. This
standard supports a dynamic image compression method
occurs.
With the MPEG2 method in accordance With an MPEG2
An object of the present invention is to provide a record
system layer, and supports an audio compression method
ing rate automatic setting recording device and a recording
With the AC3 audio compression method and an MPEG
audio compression method. Moreover, supplementary
image data in Which bitmap data is run-length-compressed
ment information is recorded on the respective recording
surfaces or the respective recording layers of the DVD
RAMs. At the time of recording, the disk management
information recorded on the target recording surface or
rate automatic setting recording method Which can set an
45
appropriate recording bit rate for a disk having a plurality of
recording surfaces.
can be treated as the subtitles of a movie, karaoke or the like.
Further, control data for special playback (a navigation
BRIEF SUMMARY OF THE INVENTION
pack) such as fast forWard, reverse or the like is added to the
standard. Moreover, in the standard, ISO9660 and micro
50
To solve the above-described problems and achieve the
UDF standards are supported such that the data of a disk can
objects, a recording rate automatic setting recording device
be read by a computer.
Further, as a standard of a medium itself, folloWing the
standards of DVD-ROMs Which are media of DVD-videos,
and a recording rate automatic setting recording method are
standards of DVD-RAMs (recording capacity: about 4.7
GB) have been completed, and DVD-RAM drives have
begun to become popular as peripheral devices of comput
structured as follows.
(1) A recording rate automatic setting recording device of
55
the present invention comprises: recording means for
recording a video signal on a predetermined recording
surface of an information recording medium; reserved
recording time detecting means for, on the basis of recording
reservation information, detecting a reserved recording time
60
needed for reserved recording; remaining capacity calculat
ers.
Further, currently, a standard of RTR (Real Time Record
ing)-DVDs Which utiliZes DVD-RAMs is being completed,
and the veri?cation operation has been ?nished. The stan
dard of RTR-DVDs has been conceived of on the basis of the
standard of DVD-videos Which are currently on the market.
Further, a ?le system corresponding to RTR-DVDs has also
been standardiZed.
Further, a device Which can record and play back broad
casting signals by using a built-in hard disk drive (HDD) has
65
ing means for detecting an entire capacity and a remaining
capacity of a ?rst recording surface of the information
recording medium Which can be accessed by the recording
means, and for, assuming a capacity Which is at least half of
the entire capacity of the ?rst recording surface to be a
remaining capacity of a second recording surface of the
information recording medium, calculating a capacity, in
US 7,136,573 B2
4
3
which the remaining capacity of the ?rst recording surface
and the remaining capacity of the second recording surface
FIG. 10 is a ?owchart showing a second part of the
recording processing which handles reserved recording.
FIG. 11 is a ?owchart explaining setting of recording
are added together, as an entire remaining capacity; ?rst
recording bit rate setting means for setting a recording bit
rate, on the basis of the entire remaining capacity calculated
reservation information.
by the remaining capacity calculating means and the
reserved recording time detected by the recording time
replacement processing.
detecting means; and ?rst recording control means for, in
accordance with the recording bit rate set by the ?rst
recording bit rate setting means and the recording reserva
tion information, recording a target video signal onto the
?rst and second surfaces of the information recording
medium.
replacement processing.
FIG. 12 is a ?owchart showing a ?rst part of a disk
FIG. 13 is a ?owchart showing a second part of the disk
FIG. 14 is a ?gure showing a ?ow of setting of recording
reservation information.
FIG. 15 is a ?owchart showing a reserved recording
failure display processing.
FIG. 16 is a ?gure showing an example of display of
information relating to a reserved recording failure.
(2) Arecording rate automatic setting recording method of
the present invention comprises: detecting a reservation
recording time needed for reserved recording on the basis of
recording reservation information; detecting an entire capac
ity and a remaining capacity of a ?rst recording surface of
an information recording medium; assuming a capacity
which is at least half of the entire capacity of the ?rst
recording surface to be a remaining capacity of a second
DETAILED DESCRIPTION OF THE
INVENTION
20
playback device (a recording rate automatic setting record
ing device) to which the present invention is applied.
Broadly classifying the respective blocks in FIG. 1, the main
recording surface of the information recording medium;
calculating a capacity, in which the remaining capacity of
the ?rst recording surface and the remaining capacity of the
second recording surface are added together, as the entire
remaining capacity; setting a recording bit rate, on the basis
of the entire remaining capacity and the reservation record
ing time; and recording a target video signal onto the ?rst
and second recording surfaces of the information recording
medium in accordance with the recording bit rate and the
recording reservation information.
Additional objects and advantages of the invention will be
set forth in the description which follows, and in part will be
obvious from the description, or may be learned by practice
of the invention. The objects and advantages of the invention
Hereinafter, embodiments of the present invention will be
described with reference to the drawings.
FIG. 1 is a diagram showing an example of a recording/
25
block of a recording section is shown at the left side, and the
main block of a playback section is shown at the right side.
The blocks of respective sections of FIG. 1 will be described
in detail later.
30
system. FIG. 2 shows the directory (which is shown as
DVD_RTAV herein) structure of, in particular, a real time
FIG. 2 shows a portion of a directory structure of a DVD
recording DVD (RTR-DVD) of a DVD system.
Respective ?les of VR_MANGRIFO serving as a video
manager ?le, VR_MOVIE.VRO serving as a movie video
35
?le, VR_STILL.VRO serving as a still picture video ?le,
VR_AUDIO.VRO serving as an audio video ?le, and
VR_MANGR.BUP serving as a backup of the video man
may be realiZed and obtained by means of the instrumen
talities and combinations particularly pointed out hereinaf
ager, exist in the directory (DVD-RTAV).
Navigation data is recorded in the VR_MANGRIFO ?le.
ter.
BRIEF DESCRIPTION OF THE SEVERAL
VIEWS OF THE DRAWING
40
The accompanying drawings, which are incorporated in
for recording a movie video object (movie VOB). This
VR_MOVIE.VRO is used for recording an original VOB
and constitute a part of the speci?cation, illustrate embodi
ments of the invention, and together with the general
description given above and the detailed description of the
embodiments given below, serve to explain the principles of
the invention.
FIG. 1 is a block diagram showing a schematic structure
of a recording/playback device according to an embodiment
of the present invention.
FIG. 2 is a ?gure showing a portion of a directory
45
composed of video parts including arbitrary sub-picture
50
units. Further, at this time, audio parts relating to the video
parts are also included in the original VOB.
The VR_STILL.VRO is a still picture AV ?le for record
ing a still picture VOB.
Further, the VR_AUDIO.VRO is a still picture additional
audio ?le for recording an additional audio stream for a still
picture. The still picture additional audio ?le shows audio
streams recorded by after recording. The still picture addi
structure of a DVD system.
FIG. 3 is a ?gure showing an example of a format of video
data.
FIG. 4 is a ?gure showing details of RID data.
tional audio ?le is used in combination with several video
55
VR_MANGR.VRO.
60
information (PGCI).
FIG. 7 is a ?gure hierarchically showing a movie AV ?le
FIG. 8 is a ?gure showing an example of disk manage
FIG. 9 is a ?owchart showing a ?rst part of a recording
processing which handles reserved recording.
Video ?les have a hierarchical structure. A single video
?le is composed of a plurality of VOBs (video objects). A
single VOB is composed of a plurality of VOBUs (video
object units). A single VOBU is composed of a plurality of
packs. An RDI pack, a V pack, anA pack, and the like exist
information table (M_AVFIT) in the video manager (VMG)
ment information.
parts recorded in the VR_STILL.VRO.
The VR_MANGR.BUP is a backup ?le of the VR_MAN
GR.IFO.
FIG. 3 of (A) shows a ?le structure of the above-described
FIG. 5 is a ?gure showing a hierarchical structure of a
video manager (VMG).
FIG. 6 is a ?gure showing, in further detail, contents of a
program chain information table (PGCIT) in program chain
This navigation data is data for advancing a program set, a
program, an entry point, a play list, or the like.
The VR_MOVIE.VRO ?le is a so-called movie AV ?le
65
as the packs.
The V pack is a pack in which video data is compressed
by the MPEG2 method, and is composed of a pack header,
US 7,136,573 B2
5
6
a packet header, and a video data section. The A pack is a
FIG. 6 is a ?gure shoWing the contents of the program
chain information table (PGCIT) in the program chain
pack in Which audio data is processed by a method such as,
for example, linear PCM, MPEG, AC3 or the like. The A
pack is composed of a pack header, a packet header, and an
audio data section.
information (PGCI).
A program type (PG_TY) shoWing Whether the program
corresponding to the program chain can be erased or not, the
number of cells in the program, primary text information
(PRM_TXTI) to be described in the program, a pointer
number (IT_TXT_SRPN) to the text information, and rep
FIG. 3 of (B) shoWs a format of video data based on the
MPEG2 method.
A group of pictures (GOP) is a compression unit of a
plurality of video frames. A sequence header is added to the
resentative image information (REP_PICTI?he cell number
and the pointer in that cell) are described in the program
chain information.
head of the group of pictures. A starting code (SHC) of the
sequence header, a number (HS) of longitudinal lines of
pixels, a number (VS) of lateral lines of pixels, an aspect
Here, returning to FIG. 1, the recording/playback device
Which handles the standardized disks described above Will
be described.
ratio (PAR), and the like are described in the sequence
header.
The RDI pack shoWn in FIG. 4 is called a real time data
The playback processing at the recording/playback device
shoWn in FIG. 1 is carried out in accordance With the
information pack (RDI_PCK). The real time data informa
tion pack includes real time general information (RDI_GI),
display control and copy control information (DCI_CCI),
manufacturer information (MNFI), and the like.
The real time general information (RDI_GI) includes
information shoWing the start time at Which the ?rst ?eld of
the VOBU to Which this information belongs is played back,
namely, VOBU_S_PTM, and information shoWing the
recording time of this VOBU, namely, VOBU_REC_TM.
The display control and copy control information
(DCI_CCI) includes (DCI_CCI_SS) Which shoWs the status
of the display control information (DCI) and the copy
control information (CCI), and the display control informa
tion (DCI) itself, and the copy control information (CCI)
itself.
program chain information (PGCI) shoWing the playback
procedure of the program. The PGCI can designate a plu
20
rality of programs (PG). Cell information (CI) is de?ned in
the PGCI. A cell entry point (C_EPI) is designated by the CI,
25
and the VOB to be played back is speci?ed. Further, a
special PGC for playing back in the recorded order is called
an original PGC, and the information of the original PGC is
recorded as ORG_PGCI. Moreover, the attribute informa
tion of the video data at this time (resolution information,
aspect information, audio attribute information, and the like)
are recorded in stream information (STI) in the VMGI.
Further, the above-described pack is a minimum unit Which
carries out the data transfer processing. The minimum unit
30
Among the (DCI_CCI_SS), a display control information
status (DCI_SS) identi?es a case in Which only effective
aspect ratio information exists (01b), and a case in Which an
effective aspect ratio, a subtitle mode, and a ?lm camera
a format Which matches the above-described format.
35
mode exist (1 lb).
The display control information (DCI) includes aspect
camera mode.
a source picture is a letter box, the aspect ratio information
identi?es that the letter box (14:9) is a screen center arrange
ment (1000b), the letter box (14:9) is a screen top arrange
ment (0100b), the letter box (16:9) is a screen center
arrangement (1101b), the letter box (16:9) is a screen top
arrangement (0010b), the letter box (>16:9) is a screen
center arrangement (1010b), and the letter box (14:9) is a
full format and center arrangement.
The subtitle mode identi?es that the subtitle does not open
(00b), the subtitle is in an active image area (01b), and the
subtitle is out of an active image area (10b).
40
45
50
signal from an AV input section 42, or an analog video
44 are inputted to the ADC 52.
The ADC 52 digitiZes the inputted analog video signal by,
55
for example, a sampling frequency of 13.5 MHZ and a
number of quantiZation bits of 8 bits. Namely, a brightness
component Y, a color difference component Cr (or Y-R),
and a color difference component Cb (or Y-B) are respec
tively quantiZed by 8 bits.
60
In the same Way, the ADC 52 digitiZes the inputted analog
audio signal by, for example, a sampling frequency of 48
cell (Cell), the VOB to be played back is de?ned. The
kHZ and a number of quantiZation bits of 16 bits.
Note that, When a digital video signal and a digital audio
signal are inputted to the ADC 52, the ADC 52 through
recorded is program chain information (PGCI) among the
table (UD_PGCIT).
respective encoders be in predetermined formats.
An external analog video signal+an external analog audio
signal+an analog audio signal from a TV (television) tuner
portion of the PGC on Which concrete information is
VMG ?les. There are tWo types of PGCIs: one is an original
PGCI (ORG_PGCI), and the other one is a user de?ned PGC
section 60 forms the playback side. The microcomputer
block 30 controls the operation of the body of the device.
The encoder section 50 is provided With an ADC (analog
digital converter) 52, an encoder group 53, a formatter 56,
(video) encoder, an A (audio) encoder, and an SP (sub
image) encoder. The formatter 56 makes outputs of the
video manager (VMG) and shoWing a management system
of a data playback procedure.
The data playback procedure recorded in the video ?le is
de?ned by a program chain (PGC) such as shoWn in FIG. 5.
In this program chain (PGC), a cell (Cell) is de?ned. In the
computer block 30. The disk drive 35 rotationally drives an
optical disk 1001 as an information storage medium Which
can form video ?les, and carries out reading and Writing of
information from and onto the optical disk 1001. The
encoder section 50 forms the recording side. The decoder
and a buffer memory 57. The encoder group 53 includes a V
The ?lm camera mode identi?es a camera mode (0b), and
a ?lm mode (1b).
FIG. 5 is a ?gure shoWing the hierarchical structure of the
The recording/playback device has, as the main structure
thereof, a hard disk drive device 2001, and a disk drive 35,
an encoder section 50, a decoder section 60, and a micro
ratio information, subtitle mode information, and the ?lm
The aspect ratio information shoWs that the aspect ratio is
4:3 (0000b), or that the aspect ratio is 16:9 (0001b). When
of logical processing is a cell unit. Namely, the logical
processing is carried out in cell units. Accordingly, When
recording is carried out, recording signals are converted to
65
passes the digital video signal and the digital audio signal.
Further, the ADC 52 may carry out a jitter reducing pro
cessing and a sampling rate changing processing on the
US 7,136,573 B2
7
8
digital video signal and the digital audio signal Without
altering the contents thereof. However, When the sampling
the same Way, the parameters necessary for encoding pro
frequencies or the like of the digital video signal and the
mentary image data encoding-processed is prepared.
digital audio signal are different, the ADC 52 carries out a
The main image data, the audio data, and the supplemen
tary image data Which have been subjected to encoding
cessing the supplementary image data are set, and supple
conversion processing on the digital video signal and digital
audio signal.
The digital video signal outputted from the ADC 52 is
processing are combined and converted into the structure of
a video object set VOBS. The cell is set as the minimum
transmitted to the formatter 56 via the V encoder. Further,
logical unit of the main image data (video data), and cell
the digital audio signal outputted from the ADC 52 is
information as described in FIG. 5 is prepared. Next, the
structure of the cell Which forms the program chain PGC,
and the attribute information and the like of the main image,
the supplementary image, and audio are set, and a VMG ?le
transmitted to the formatter 56 via the A encoder.
On the basis of the MPEG2 or MPEG1 standard, the V
encoder converts the inputted digital video signal to a digital
signal compressed by a variable bit rate. Further, on the basis
including various information is prepared. The information
of the MPEG or AC-3 standard, the A encoder converts the
obtained at the time of encoding the respective data are used
for a portion of the attribute information.
inputted digital audio signal to a digital signal compressed
by a ?xed bit rate or a digital signal of a linear PCM.
The main image data, the audio data, and the supplemen
tary image data Which have been subjected to encoding
Here, a case in Which a supplementary image signal is
inputted from the AV input section 42 is conceived. For
example, a case in Which a signal from a DVD video player
having an independent output terminal of the supplementary
image signal is inputted from the AV input section 42 is
20
conceived. Or, a case in Which a DVD video signal having
such a data structure is broadcast, and is received at the TV
tuner 44 is conceived. The supplementary image signal
(supplementary image pack) in the DVD video signal is
inputted to the SP encoder. The supplementary image signal
25
inputted to the SP encoder is arranged to a predetermined
signal format, and transmitted to the formatter 56.
While the formatter 56 is using the buffer memory 57 as
a Work area, the formatter 56 carries out predetermined
30
signal processings on the video signal, audio signal, supple
mentary image signal, and the like Which are inputted. In this
Note that, When the DVD playback signal is digitally
35
The information encoded in the encoder section 50 and
50 are supplied to the hard disk device 2001 via the data
processor 36, and may be recorded onto the hard disk. The
information recorded on the hard disk may be recorded on
40
disk 1001 and Which play back information from the optical
disk 1001 are the disk drive 35, the data processor 36, a
45
of the hard disk device 2001 is the same as the data format
Further, When the information recorded on the hard disk
of the hard disk device 2001 is different from the data format
of the optical disk 1001, the information read out from the
hard disk is encoded in the encoder section 50, and is
recorded onto the optical disk 1001.
50
Here, standard encoding processing contents for prepar
ing the recording data onto the optical disk 1001 Will be
brie?y described. When the encoding processing starts in the
encoder section 50, the parameters necessary for encoding
processing the video (main image) data and the audio data
55
are set. By using the set parameters, the main image data is
subjected to pre-encoding processing. In this Way, the dis
tribution of the amount of codes appropriate for the set
average transfer rate (recording rate) is calculated. On the
basis of the code amount distribution obtained by the
60
pre-encoding processing, the encoding processing of the
65
processing of the audio data is executed at the same time. In
time stamps, and the like are determined from the start, there
is no need to prepare them again.
The components Which record information on the optical
temporary storage section 37, and an STC (system time
of the optical disk 1001, the information in the hard disk is
not encoded, and is recorded as it is onto the optical disk.
main image data is executed. At this time, the encoding
copied from a DVD video player, because the contents of the
above-described cells, program chain, management table,
the management information prepared in the encoder section
the optical disk 1001 via the data processor 36 and the disk
drive 35. Moreover, the information encoded in the encoder
section 50 and the management information prepared in the
encoder section 50 may be recorded onto the optical disk
1001 via the data processor 36 and the disk drive 35.
Further, When the information recorded on the hard disk
Further, the RDI pack (Which corresponds to a navigation
pack) is disposed at the head of the video object unit VOBU
such that playback in the order of the time codes of the
respective data is possible, and the respective cells are
arranged. In this Way, the video object VOB to be composed
of a plurality of cells is structured. The video object set
VOBS is recorded in the movie video ?le as a program by
collecting one or more video objects VOB.
Way, recording data, Which matches the format (?le struc
ture) as described above in FIG. 3 and FIG. 4, is outputted
to a data processor 36.
processing are subdivided into packs (FIG. 3) of a constant
siZe (2048 bytes). Note that time stamps such as a PTS
(presentation time stamp) shoWing a playback time, or a
DTS (decoding time stamp) shoWing a decoding time, or the
like are appropriately described in the packs. As for the PTS
of the supplementary image, a time arbitrarily delayed more
than the PTS of the main image data or the audio data in the
same time period of playback may be described.
counter or system time clock) 38.
The temporary storage section 37 buffers a ?xed amount
of data among the data (the data to be outputted from the
encoder section 50) to be Written on the optical disk 1001 via
the data processor 36 and the disk drive 35. Further, the
temporary storage section 37 buffers a ?xed amount of data
among the data (the data to be inputted to the decoder
section 60) played back from the optical disk 1001 via the
disk drive 35 and the data processor 36. The disk drive 35
has a rotary control system, a laser driving system, an optical
system, and the like.
For example, When the temporary storage section 37 is
composed of a semiconductor memory (DRAM) of 4
Mbytes, the temporary storage section 37 can bulfer about 8
seconds of recording data or playback data at a recording
rate of an average of 4 Mbps (bits per second).
Further, When the temporary storage section 37 is com
posed of an EEP (electrically erasable and programmable)
ROM (:?ash memory), the temporary storage section 37
can buffer about 30 seconds of recording data or playback
data at a recording rate of an average of 4 Mbps.
Moreover, When the temporary storage section 37 is
composed of a microminiature HDD (hard disk drive) of 100
Mbytes, the temporary storage section 37 can buffer 3
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