Optical Media Formats And Methods of Making Same

Optical Media Formats And Methods of Making Same
US 20070263 524A1
(19) United States
(12) Patent Application Publication (10) Pub. No.: US 2007/0263524 A1
(43) Pub. Date:
Thompson et al.
(54)
OPTICAL MEDIA FORMATS AND
NOV. 15, 2007
Related US. Application Data
METHODS OF MAKING SAME
(75)
Inventors: Robert E. Thompson, Boca Raton, FL
(US); Arthur R. Leblanc III,
Kennebunk, ME (US); Edward P.
Lindholm, Brookline, MA (US); Louis
Cincotta, Andover, MA (US); Joseph
Paulus, Portland, ME (US)
(60) Provisional application No. 60/711,616, ?led on Aug.
26, 2005.
Publication Classi?cation
(51)
Int. Cl.
G11B 7/24
(52)
US. Cl. ........................................................ ..369/275.1
(2006.01)
Correspondence Address:
MORRIS MANNING MARTIN LLP
3343 PEACHTREE ROAD, NE
1600 ATLANTA FINANCIAL CENTER
ATLANTA, GA 30326 (US)
(57)
ABSTRACT
Apparatuses, products, and devices consistent With the
invention include optically readable media With at least one
substrate, at least one encoded information region and/or
region for receiving and/or recording encoded information,
(73) Assignee: Flexplay Technologies, Inc.,Atlanta, GA
and at least one mechanism, chemical, agent, and/ or process
for limiting the time period that at least a portion of the at
(21) Appl. No.:
11/467,685
(22) Filed:
Aug. 28, 2006
least one encoded information region and/or region for
receiving and/or recording encoded information can be read
and/or accessed by an optical beam and/or reader capable of
reading the encoded information.
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OPTICAL MEDIA FORMATS AND METHODS OF
MAKING SAME
RELATED APPLICATIONS
[0001] The present application is related to and claims the
bene?t of US. Provisional Application Ser. No. 60/711,616
?led Aug. 26, 2005 and is herein incorporated by reference
in its entirety.
BACKGROUND
Field of the Invention
[0002] The present invention relates generally to optically
readable media. More speci?cally, apparatuses, products and
devices consistent With the invention are disclosed that
include numerous con?gurations for encoding information
both data layers on top substrate and a reactive dye or
corrosion chemistry in bonding layer;
[0007] FIG. 3 illustrates a cross section of a combined CD
and DVD embodiment consistent With the invention With a
protective lacquer over the CD re?ective layer before bond
111%;
[0008]
a CD lacquer layer before bonding;
[0009] FIG. 5 illustrates a cross section of a limited play
DVD With a CD recordable layer embodiment consistent
With the invention;
[0010] FIG. 6 illustrates a cross section of a DVD embodi
ment consistent With the invention With tWo standard DVD
bonded back to back, Wherein at least one layer is limited
on at least one substrate and/or data layer With at least one
Play
mechanism, chemical, agent, and/or process for limiting the
[0011]
time period that at least a portion of the encoded information
can be read and/ or accessed by an optical beam and/or reader
capable of reading information encoded thereon.
SUMMARY OF THE INVENTION
[0003] A dual format optically readable medium is dis
closed. A ?rst substrate includes data encoded information
that is optically readable by an optical beam of a pre-selected
Wavelength. The ?rst substrate is conjoined With a second
substrate that includes data encoded information readable by
an optical beam of a pre-selected Wavelength. The tWo
FIG. 4 illustrates a cross section of a combined CD
and DVD embodiment consistent With the invention Without
FIG. 7 illustrates a cross section of a DVD record
able the LO layer With L1 prerecorded layer embodiment
consistent With the invention, Wherein the bonding layer
includes a read limiting agent;
[0012] FIG. 8 illustrates a cross section of a DVD record
able on the L0 side With a limited play DVD on L1 side
embodiment consistent With the invention;
[0013]
FIG. 9 illustrates a cross section of a limited play
DVD With a permanent play DVD read from the top side
embodiment consistent With the invention;
[0014]
FIG. 10 illustrates a cross section of a limited play
substrates are con?gured so as to alloW the reading of the
data encoded information stored on each substrate. At least
one of the substrates includes a read inhibiting material that
DVD With a permanent play DVD recordable layer embodi
ment consistent With the invention;
prohibits reading of the data encoded information on the ?rst
substrate, second substrate, or both substrates after a prede
termined period of time. The format of the data encoded
information is selected to be readable by an optical beam and
may be selected from the formats of, for example, Compact
[0015] FIG. 11 illustrates a cross section of a limited play
HD-DVD dual layer top substrate bonded With a DVD
embodiment consistent With the invention, Wherein either or
both the HD-DVD layer or the DVD layer are limited life
Disc, CD-ROM, CD-WORM, CD-Interactive, DVI, CD
Erasable Magneto Optic, Optical Digital Data Disc, ODD,
Video Disk, Interactive Video Disc, Blu-ray, High De?ni
tion-DVD, Digital Versatile Disc, DVD-R, DVD-Video,
DVD-RAM, DVD-Audio, DVD-RAM, DVD-RW, DVD+
RW, DVD+R, DVD-Video, Super Audio CD, Holographic
Versatile Disk, CD-R, CD-RW, CD-Video, Enhanced Ver
satile Disc, Digital Versatile Disc Recordable, Digital Mul
tilayer Disc, and Blu-ray recordable. The present disclosure
also discloses novel dual format combinations that do not
include a read inhibiting material and/or mechanism. Also
disclosed are optical media capable of storing content of
differing durationsia limited duration and a persistent
duration.
layers;
[0016]
FIG. 12 illustrates a cross section of a Blu-ray data
layer(s) combined With DVD data and/or recordable layers
embodiment consistent With the invention;
[0017]
FIG. 13 illustrates a cross section of a Blu-ray data
layer(s) combined With DVD data and/or recordable layers
embodiment consistent With the invention;
[0018]
FIG. 14 illustrates a cross section of a Blue-ray top
data layer (dual layer shoWn) combined With HD-DVD data
layer (dual layer shoWn) read from the bottom embodiment
consistent With the invention; and
[0019]
FIG. 15 illustrates a cross section of a DVD
Recordable L0 layer With a L1 prerecorded layer embodi
ment consistent With the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
DESCRIPTION
[0004] These and other features, aspects and advantages of
the present invention Will become better understood With
[0020]
reference to the folloWing description, appended claims, and
ments of the present invention as illustrated in the accom
accompanying draWings Where
[0005]
FIG. 1 illustrates a cross section of a combined CD
and DVD embodiment consistent With the invention;
[0006]
FIG. 2 illustrates a cross section of a combined CD
and DVD embodiment consistent With the invention With
Reference Will noW be made in detail to embodi
panying draWings. The same reference numbers may be used
throughout the draWings and the folloWing description to
refer to the same or like parts. The folloWing description is
presented to enable any person skilled in the art to make and
use the inventive body of Work. Descriptions of speci?c
embodiments and applications are provided only as
Nov. 15, 2007
US 2007/0263524 A1
examples, and various modi?cations Will be readily apparent
to those skilled in the art. For example, although many of the
examples are described in the context of certain data type
combinations any single data type may be made limited play,
it should be understood that embodiments of the present
invention could be used to in any data type combinations
even those combinations not expressly stated, or the like.
Similarly, although for the sake of illustration many of the
examples describe a read limiting agent and/or mechanism
in the bonding layer, those of ordinary skill in the art Will
appreciate that the apparatus, devices and products of the
present invention can be applied to any suitable to a read
limiting agent anyWhere in the optical medium. The general
principles described herein may be applied to other embodi
ments and applications Without departing from the spirit and
scope of the invention. Thus, the present invention is to be
accorded the Widest scope, encompassing numerous alter
natives, modi?cations, and equivalents consistent With the
principles and features disclosed herein. For purpose of
clarity, details related to technical material that is knoWn in
the ?elds related to the invention have not been described in
detail so as not to unnecessarily obscure the present inven
tion.
OvervieW
[0021]
In one embodiment consistent With the invention a
limited life CD, CD-ROM, and/or CD-R optical disc utiliZ
ing a corrosive agent and/ or agent for degrading the integrity
of a re?ective layer and/or portion there of located in a layer
and/or region adjacent to the re?ective layer of the disc is
described.
[0022] In another embodiment consistent With the inven
tion a limited life CD, CD-ROM, and/or CD-R utiliZing a
dye in the optical path of the 780 nm laser is described. The
optical disc employs tWo substrates bonded together With a
dye adhesive While the data layer resides on top of the
substrate stack at approximately 1.2 mm above the bottom
surface of the layered disc.
[0027] In another embodiment consistent With the inven
tion a limited play DVD including recordable and dual layer
disc halves using a dye material to inhibit the ability of the
reading laser to read a data layer Within the optical disc is
disclosed. In an overlapping embodiment a permanent play
and/or recordable DVD layer survives after the limited play
mechanism is activated and the limited play layer(s) has
ceased to play.
[0028]
In a further embodiment consistent With the inven
tion an optical disc combining HD-DVD, HD-DVD-R/RW
and/or DVD/DVD-/+R/RW data layers Within one disc
Where any one or more of the data and/or recordable layers
is limited play is disclosed. In an overlapping embodiment,
the limited play mechanism is a corrosive agent that is
adjacent to one or more re?ective layer. In a further over
lapping embodiment a permanent play and/or recordable
DVD layer survives after the limited play mechanism is
activated and the limited play layer(s) has ceased to play. In
yet another overlapping embodiment the read limiting agent
is a dye that inhibits the reading of at least one data layer. In
an overlapping embodiment With the dye, a permanent play
and/or recordable layer survives after the limited play
mechanism is activated and the limited play layer(s) has
ceased to play.
[0029] In another embodiment consistent With the inven
tion an optical medium combining HD-DVD, HD-DVD-/+
R/RW and CD, CD-ROM, CD-R, and/ or CD-RW data layers
Within one disc Where any one or more of the data and/or
recordable layers is limited play is disclosed. The limited
play mechanism is selected from a corrosive material, dye
material and/or combinations thereof. If the limited play
mechanism is a corrosive material it is located adjacent to at
least one re?ective layer. In an overlapping embodiment a
permanent play and/or recordable layer survives after the
limited play mechanism is activated and the limited play
layer(s) has ceased to play.
[0030]
In an embodiment consistent With the invention an
optical medium combining Blu-ray and DVD data and/or
In yet another embodiment consistent With the
recordable layers Within one disc Where any one or more of
invention a limited play DVD combined With a CD data
the data and/ or recordable layers is limited play is disclosed.
The limited play mechanism is selected from a corrosive
material, dye material and/or combinations thereof. If the
limited play mechanism is a corrosive material it is located
adjacent to at least one re?ective layer. In an overlapping
[0023]
layer or recordable layer is described. In yet still a further
embodiment a corrosive agent and/or agent for degrading
the integrity of a re?ective layer and/or portion thereof
located adjacent to one or more re?ective layers of the DVD
and/or CD data layer is described.
embodiment a permanent play and/ or recordable layer sur
vives after the limited play mechanism is activated and the
[0024]
In a further embodiment consistent With the inven
limited play layer(s) has ceased to play.
tion a dye material is incorporated in the optical path of the
reading laser.
[0031] In another embodiment consistent With the inven
tion an optical medium combining Blu-ray and HD-DVD
[0025] In another embodiment consistent With the inven
tion a permanent play and/or recordable layer survives after
the limited play mechanism is activated and the limited play
layer(s) has ceased to play.
data and/or recordable layers Within one disc Where any one
or more of the data and/or recordable layers is limited play
is disclosed. The limited play mechanism is selected from a
[0026]
In an embodiment consistent With the invention a
limited play DVD including recordable and dual layer disc
halves using a corrosive material and/or an agent for degrad
ing the integrity of at least one re?ective layer and/or portion
thereof in a layer adjacent to any re?ective layer Within the
corrosive material, dye material and/or combinations
thereof. If the limited play mechanism is a corrosive material
it is located adjacent to at least one re?ective layer. In an
overlapping embodiment a permanent play and/or record
able layer survives after the limited play mechanism is
activated and the limited play layer(s) has ceased to play.
optical disc is disclosed. In an overlapping embodiment a
[0032]
permanent play and/ or recordable DVD layer survives after
the limited play mechanism is activated and the limited play
layer(s) has ceased to play.
compact disc (hereafter “CD”) includes a mechanism,
chemical, agent and/or process for limiting the period of
In one embodiment consistent With the invention a
time encoded information stored on the CD can be read
Nov. 15, 2007
US 2007/0263524 A1
and/or accessed. The mechanism, chemical, agent and/or
to any material that prevents the reading beam from reading
process for limiting the access time can be applied to CDs
at least a portion of any data region after a predetermined
time. Corrosive material refers to any material that degrades
the integrity of at least a portion of any re?ective layer and
thus prevents the reading beam from reading a portion of any
data region after a predetermined time.
that have the encoded information encoded during the
manufacturing process (i.e., CD-Read Only Memory, here
after “CD-ROM”) and/or encoded information encoded by
recording directly onto the CD (i.e., CD-Recordable and/or
CD-ReWritable and the like). Further, the mechanism,
chemical, agent and/or process for limiting the access time
is independent of the type and/or kind of data and/or
information encoded on the CD (i.e., audio, video, data,
softWare, images, text, games, combinations thereof, etc.).
[0036] The folloWing U.S. patents and patent applications
are hereby incorporated by reference in their entirety. U.S.
Pat. Nos. 6,641,886; 6,838,144; 6,511,728; 6,537,635;
6,839,316; 6,678,239; 6,011,772; 6,343,063; 6,434,109;
6,756,103; 6,917,579; and Us. patent application Ser. Nos.
CD standards, put forth by industry groups such as ECMA
International, describe the technical and manufacturing
aspects of the various CD formats, i.e., CD-Audio, CD
ROM CD-Recordable, CD-ReWritable, CD-Interactive, CD
[0037]
Video.
present invention Will be presented in more detail in the
[0033]
In yet another embodiment consistent With the
invention an optical media that includes at least two different
types of data structures and/or data formats and at least one
mechanism, chemical, agent and/or process for limiting
access to the data region of either type of data structure
and/or data format, all the types of data structures and/or
data formats contained on the optical media, and/ or portions
10/162,417; 10/016,263; 10/163,473; 10/163,855; 10/163,
472; 10/651,627; 60/627,209; and 60/627,386.
These and other features and advantages of the
folloWing detailed description and the accompanying ?gures
Which illustrate by Way of example the principles of the
invention.
Compact Disc
[0038]
In one embodiment consistent With the invention a
compact disc (hereafter “CD”) includes a mechanism,
chemical, agent and/or process for limiting the period of
thereof is described. This embodiment includes, for
example, combinations of at least tWo data structures and/or
time encoded information stored on the CD can be read
data formats selected from Read Only Memory (ROM),
Write Once, Read Many (WORM), Interactive (I), Erasable
process for limiting the access time can be applied to CDs
(E), CD-ROM, CD-WORM, CD-I, DVI, CD-EMO, OD3,
ODD, Video Disk, IVD, Blu-ray, HD-DVD, DVD, DVD-R,
DVD-Video, DVD-RAM, DVD-Audio, DVD-RAM, DVD
RW, DVD+RW, DVD+R, DVD-Video, SACD, variants of
the above, and/ or any data structure and/ or data format that
is readable by an optical beam and/or optical reading device,
including holographic and 3-D optical storage devices. In
this embodiment, the at least tWo data structures and/or data
formats may be accessed by the reading beam(s) through the
same substrate layer and/or substrate side, i.e., Without
physically ?ipping the disc over; each through a unique
substrate layer and/or substrate side, i.e., physically ?ipping
the disc over to access the data of the other type; or a
and/or accessed. The mechanism, chemical, agent and/or
that have the encoded information encoded during the
manufacturing process (i.e., CD-Read Only Memory, here
after “CD-ROM”) and/or encoded information encoded by
recording directly onto the CD (i.e., CD-Recordable and/or
CD-ReWritable and the like). Further, the mechanism,
chemical, agent and/or process for limiting the access time
is independent of the type and/or kind of data and/or
information encoded on the CD (i.e., audio, video, data,
softWare, images, etc.). CD standards, put forth by industry
groups, such as ECMA and ISO, describe the technical and
manufacturing aspects of the various CD formats, i.e.,
CD-Audio, CD-ROM CD-Recordable, CD-ReWritable, CD
Interactive, CD-Video.
combination thereof. In an overlapping embodiment consis
[0039]
tent With the invention at least one data structure and/or data
structure based on a 1.2 mm thick molded substrate With a
format may be accessed by the reading beam(s) through the
data layer on the top surface coated With a re?ective layer.
The data layer is read from the bottom side of the substrate
same substrate layer and/or substrate side, i.e., Without
physically ?ipping the disc over; each through a unique
substrate layer and/or substrate side, i.e., physically ?ipping
the disc over to access the data of the other type; or a
combination thereof.
[0034]
In still another embodiment consistent With the
invention an optical media includes a mechanism for record
ing information and storing it on the optical media and a
mechanism, chemical, agent and/or process for limiting the
period of time the recorded information is accessible. The
data format recorded is not limited to CD, DVD, High
De?nition, Blu-ray, 3-D and/ or holographic data formats and
includes any recordable data format.
The various CD formats generally adhere to a disc
by a 720 nm. laser.
[0040]
In one embodiment consistent With the invention a
limited play optical CD can be constructed using a corrosive
material layer adjacent to the re?ective layer. The corrosive
agent responds to a stimulus and/or triggering event, such as
for example, exposure to oxygen, Which causes the corrosive
agent to react With the re?ective layer such that the associ
ated data layer, or a portion thereof, is no longer readable by
the read laser of the reading device.
[0041]
In another embodiment consistent With the inven
tion a 1.2 mm thick optically transparent substrate is con
structed With multiple layers, at least tWo, of molded sub
[0035] The speci?cation frequently makes reference to
“substrates,”“dye material,” and “corrosive material.” For
strates. TWo 0.6 mm thick substrates are bonded together
using a reactive dye material to form a 1.2 mm. thick
purposes of clarity, substrate is meant to include any struc
tural member of an optical medium used for support and/or
to receive a subsequent layer such as for example, a data
substrate. HoWever, it should be noted that tWo halves and/or
substrates of equal thickness are not required, for example,
layer, re?ective layer, bonding layer, buffer layer, lacquer
layer, and additional substrate layer(s). Dye material refers
one substrate could be 0.4 mm thick and the other 0.8 mm
thick and variations thereof. Moreover, the total overall
thickness of 1.2 mm is just to comply With the speci?cations
Nov. 15, 2007
US 2007/0263524 A1
set forth by ECMA, ISO, and the DVD Forum so that discs
Will play in a large percentage of the players currently in the
homes of consumers. However, as the standards bodies
change the speci?cations so too the embodiments consistent
With the invention can be changed. This applies for CD,
DVD, High De?nition, Blu-ray, and other next generation
optical media. The bottom substrate, or L0 substrate as it is
referred to in a DVD construct, Would be a blank disc With
no data structures molded on either surface of the L0
substrate. The second substrate is molded With a CD data
layer or recordable structures on the top surface. The surface
is then coated With a re?ective layer or recordable layers to
complete the disc according to its format speci?cations and
as speci?ed by disc standards bodies such as, for example,
ECMA and ISO. The reactive dye in the bonding layer, When
exposed to a stimulus and/or triggering event, such as for
example exposure to oxygen, Will disable the ability of the
laser to read or record data from the disc.
[0042]
The above embodiments do not require that the
limited play mechanism, i.e., corrosive agent and/or reactive
dye, be an entire layer or be throughout a single layer and
either can be present in limited regions of the media. For
example, the limited play mechanism can be localiZed to a
region and/or regions that prevent the entire encoded infor
mation stored on the media from being read by the reading
beam. Alternatively, the regions With the localiZed mecha
nism Will be the regions associated With the limited play
mechanism.
semi-re?ective ?lms, metallic semi-re?ective ?lms, dielec
tric ?lms, and/or combinations thereof.
[0047] Metallic semi-re?ective ?lms have an effect on the
reading of the 780 nm laser used to read the CD layer.
Dielectric ?lms can be made Which are transparent at 780
nm and re?ective at 650 nm. A combination of semi
re?ective ?lms may also be used to form a layered semi
re?ective ?lm. A mechanism for limited the time a re?ective
layer and/or semi-re?ective layer can be read by a reading
beam and/or for limiting the integrity of a re?ective layer
and/or semi-re?ective layer With the inclusion of a dye,
corrosive material and/ or other reading limiting agent in the
optical path and/or adjacent to a re?ective layer and/or
semi-re?ective layer. For example, in one embodiment con
sistent With the invention Wherein the CD data layer and
DVD data layer are read from one substrate side a corrosive
material eliminates the L0 semi -re?ective layer and removes
that re?ected signal from that layer after a prede?ned period
of time.
[0048] In another embodiment consistent With the inven
tion, thicker, full re?ective layers are not affected by the
corrosive material. This can be accomplished either by the
bulk properties of materials (thick ?lm vs very thin) similar
to the semi-re?ective ?lm or by changing the full re?ective
layer to a different material such as Au, or silver alloy that
does not get impacted by the corrosion mechanism. Thus,
providing an optically readable medium With tWo time
scales of accessability.
CD/DVD Hybrid
[0043] Combining the functionality of a CD or DVD
together on one disc has been recently accepted by the music
industry With the release of a Dual Disc product. As this disc
does not meet the original Philips Red Book speci?cations
for disc thickness, it is unique in that it has received industry
acceptance due to its compatibility With the majority of
players in the market, While technically not meeting thick
ness speci?cations.
[0044] In an embodiment consistent With the invention
limited play media constructs With modi?ed disc thicknesses
are disclosed. In this embodiment a thin CD is placed back
to back With a thin DVD. The CD, DVD, portions of either
and/or both, or both disc types include a limited play
mechanism, such as for example, a dye in the optical path
and/or corrosion of the re?ective layer or portions thereof.
As described above, the CD substrate can be, for example,
an audio, ROM, recordable, or reWritable disc While the
DVD side can be, for example, a DVD-5, an inverse DVD-5,
DVD-9, DVD-Recordable, or DVD-ReWritable. These tWo
substrates With associated data structures, recording layers,
and appropriate re?ective layers can be combined together
[0049] FIG. 1 illustrates an embodiment consistent With
the invention that includes a limited play CD data layer 40,
DVD data layer 30, or both. The bonding resin 15 is in the
optical path of the CD read laser 25. With a re?ective layer
30 on L0 10, the CD laser 25 is not blocked by this ?rst
re?ective layer. The CD laser 25 then reads the L1 5 data
through the bonding resin 15 that includes a reactive dye
material that absorbs the read laser after a predetermined
period of time. In this embodiment the CD data is of limited
duration and/ or limited accessability. The L1 layer 5 is caped
With a protective layer 45. Alternatively, the semi-re?ective
30 L0 layer 10 is bonded With a material that results in
corrosion of the L0 10 re?ective layer 30 after a prede?ned
period of time. This con?guration degrades the DVD re?ec
tive layer 10 and creates a limited play DVD layer because
the re?ectivity deteriorates to the point that the optical
reading beam 35 is not re?ected back in a su?icient manner
to all it to be read. In this con?guration the CD data layer 40
is permanent play.
[0050] FIG. 2 illustrates an optical medium as in FIG. 1,
hoWever the DVD portion is made using an inverse DVD-5
as disclosed in Us. patent application Ser. Nos. lO/l 63,473,
in any combination.
l0/l63,855, l0/l63,472, l0/837,826, l0/l63,82l, 10/651,
[0045]
627 and Us. Pat. No. 6,756,103, all hereafter incorporated
by reference in their entirety. In this embodiment, the L1
In yet another embodiment consistent With the
invention a CD data layer and a DVD data layer use tWo
substrates bonded together and are read from one substrate
side.
[0046] In still another embodiment consistent With the
invention an optical medium includes encoded information
With tWo separate life times, a limited life and an inde?nite
life. In this embodiment the medium is played and/or read,
for both DVD and CD, from one substrate side. The re?ec
tive layers can be selected from metallic ?lms, dielectric
disc 5 has CD data structures on the top side, and DVD data
structures on the bottom of the same disc half 5. (i.e., data
structures on both sides of the top disc half). This embodi
ment enables the use of bonding resins 15 based on either
corrosive materials as in the examples above or dye mate
rials as the bonding layer is located Within the optical path
of the reading beam(s). Both metallic and dielectric semi
re?ective layers can be used. Metallic semi-re?ective ?lms
do have an effect on the reading of the 780 nm laser used for
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