EP1005040A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Information signal copvright protection method, information signal recording method and device, and information signal output method and device
Assignee: Sony Corp
•
Filing: 1999-11-25
•
Granted: —
•
Expires: 2019-11-25
Abstract
Abstract A copyright protection method and apparatus, an output method and device, and a recording method and device for protecting information signals that are transmitted and stored in both a baseband signal status and a compressed encoded data status are provided. The method includes the steps of superimposing a first copyright protection information as a digital watermark on a signal in a baseband state, and compression encoding the signal in the baseband state to form an information signal in a compressed encoded data state. The signal in the baseband state and the signal in the compressed encoded data state are then transmitted from a first apparatus to a second apparatus. The second apparatus determines whether rewriting of the first copyright protection information superimposed on the signal in the baseband state and the signal in the compressed encoded data state is necessary, and if it is determined that rewriting of the first copyright protection information is necessary, rewrites the first copyright protection information as a digital watermark on the signal in said baseband state only.
Inventors
- 👤 Takashi Kohashi
- 👤 Akira Ogino
- 👤 Masashi Nakamura
- 👤 Yuji Kimura
- 👤 Nozomu Ikeda
- 👤 Osamu Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:03
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G06; G06T; G06T1/00; G06T1/0021; G06T1/0028; G06T1/0035; G11B20/00086; G11B20/00681; G11B20/00688; G11B20/00731; G11B20/00746; G11B20/00753; G11B20/00768; G11B20/00884; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/913; G06T2201/00; G06T2201/005; G06T2201/0052; H04N2005/91307; H04N2005/91328; H04N2005/91335; H04N2005/9135; H04N2005/91357; H04N2005/91364
Claims Analysis
Total Claims: 61
Claim 1
Independent Claim
154 words
A copyright protection method for protecting information signals that are
transmitted and stored in both a baseband signal status and a compressed encoded data status,
comprising the steps of: superimposing a first copyright protection information as a digital watermark on a
signal in said baseband state; compression encoding said signal in said baseband state to form an information signal
in a compressed encoded data state; transmitting said signal in said baseband state and said signal in said compressed
encoded data state from a first apparatus to a second apparatus; determining by said second apparatus whether rewriting of said first copyright
protection information superimposed on said signal in said baseband state and said signal in
said compressed encoded data state is necessary; and if it is determined that rewriting of said first copyright protection information is
necessary, rewriting said first copyright protection information as a digital watermark on said
signal in said baseband state only.
Claim 2
Dependent Claim
82 words
The copyright protection method of claim 1, wherein said first copyright
protection information is information for controlling copy generation of the information
signal and while the digital watermark is not rewritten from a one-time copy-allow status to a
copy-prohibit status during a recording process at said second apparatus, when required, the
rewriting of the digital watermark first copyright protection information is performed during
playback of a recorded information signal from said second apparatus while said information
signal is in a baseband state.
Claim 3
Dependent Claim
30 words
The copyright protection method of claim 2, wherein rewriting of said first
copyright protection information signal during playback consists of rewriting from a one-time
copy-allow state to a copy-prohibit state.
Claim 4
Dependent Claim
42 words
The copyright protection method of claim 2, wherein the rewriting of digital
watermark first copyright protection information during playback of said information signal
consists of rewriting from a one-time copy-allow state or a less restrictive copy-prohibit state
to a never copy state.
Claim 5
Dependent Claim
56 words
The copyright protection method of claim 2, wherein encoding of said
compressed data is performed during recording of the data onto a recording medium by said
second apparatus while said data is in said compressed state, and wherein decoding of said
encoded information is performed when said compressed data is read out from said recording
medium.
Claim 6
Dependent Claim
51 words
The copyright protection method of claim 1, wherein a second copyright
protection information with contents equivalent to said first copyright protection information
is added to the compressed encoded data signal, wherein when rewriting of said copyright
information is necessary, only the second copyright information is updated for the
compressed encoded data.
Claim 7
Dependent Claim
32 words
The copyright protection method of claim 6, wherein whether rewriting of said
copyright information is required is determined after detecting at least said first copyright
protection information from said baseband information signal.
Claim 8
Dependent Claim
25 words
The copyright protection method of claim 6, wherein copyright protection of
said compressed data transmit status is implemented based on said second copyright
protection information.
Claim 9
Dependent Claim
41 words
The copyright protection method of claim 8, wherein copyright protection
based on said second copyright protection information from said compressed encoded data
signal in a digital interface is implemented in accordance with said IEEE 1394 along with
encoding of information signal.
Claim 10
Dependent Claim
57 words
The copyright protection method of claim 6, wherein the rewriting of said
second copyright protection information from said compressed encoded data signal is
performed on said information signal in a compressed data state during recording, and
rewriting of said digital watermarked first copyright protection information on said baseband
signal is performed during playback of said baseband signal.
Claim 11
Dependent Claim
49 words
The copyright protection method of claim 10, wherein said copyright
protection information is for controlling copy generation of said recorded data and the
rewriting of said digital watermark first copyright protection information during playback of
said baseband information signal is from a one-time copy-allow state to a copy-prohibit state.
Claim 12
Dependent Claim
69 words
The copyright protection method of claim 10, wherein said copyright
protection information for controlling copy generation and, the rewriting of said second
copy right protection information during recording is from a one-time copy-allow state to a
copy-prohibit state, and the rewriting of said digital watermark first copyright protection
information during playback is from a one-time copy-allow state or a less restrictive
copyright protection state, to a never copy state.
Claim 13
Dependent Claim
47 words
The copyright protection method of claim 10, wherein encoding of said
compressed data is performed during recording of said data onto the recording medium while
in said compressed state, and decoding of said encoded data is performed when reading out
said compressed data from said recording medium.
Claim 14
Dependent Claim
22 words
The copyright protection method of claim 6, wherein said second copyright
protection information is CGMS (Computer Generation Management System) copy control
information.
Claim 15
Dependent Claim
119 words
A copyright protection method for protecting information signals that are
transmitted and stored as a baseband signal, and as a compressed data signal obtained by
compression-encoding of said baseband signal, comprising the steps of: adding a first copyright information as a digital watermark to said baseband signal; inserting and adding a second copyright information with contents equivalent to said
first copyright information to said compressed data signal; and implementing copyright protection based on said second copyright information in a
digital interface for said information signal is in said compressed data state; and implementing copyright protection based on the detection of the digital watermarked
first copyright information from the baseband signal for said information signal transmitted in
said baseband state.
Claim 16
Dependent Claim
93 words
The copyright protection method of claim 15 wherein copyright protection for
information signals input in said compressed data state is implemented in the digital interface
based on said second copyright information, and during recording of said compressed data,
said second copyright information is rewritten as necessary; and wherein for an information
signal input in said baseband signal state, the digital watermarked first copyright information
is detected from said baseband signal and recording control is implemented based on the
detection results, and encoding of said baseband signal into compressed data is performed
during recording.
Claim 17
Dependent Claim
97 words
The copyright protection method of claim 15, wherein copyright protection is
performed on an output information signal in said compressed data state in the digital
interface, based on said second copyright information, and wherein when said information
signal is to be output in said baseband signal state, said played back compressed data is first
extension decoded, then the digital watermark first copyright information is detected from
said extension-decoded information signal, and finally said first copyright information is
rewritten on said decoded information signal as necessary, according to the detection results
of said digital watermark first copyright information.
Claim 18
Dependent Claim
47 words
The copyright protection method of claim 15, wherein said copyright
information is for controlling copy generation and protection of said information signals, and
wherein said first copyright information is determined during recording, and during playback
the output of said information signal is controlled according to this determination.
Claim 19
Dependent Claim
47 words
The copyright protection method of claim 15, wherein encoding of said
compressed data is performed when recording a data signal to a recording medium in said
compressed data state and decoding of said encoded information is performed during output
of said compressed data from said recording medium.
Claim 20
Dependent Claim
27 words
The copyright protection method of claim 15 wherein said digital interface is
an IEEE 1394 interface used along with encoding of an information signal for copyright
protection.
Claim 21
Dependent Claim
113 words
A recording method for recording data signals input in a baseband signal state
and data signals input in a compressed data state, comprising the steps of: adding digital watermarked first copyright information to a signal in said baseband
signal status; inserting a second copyright information in a data signal in said compressed data state
with contents equivalent to said first copyright information; and recording of the information signal input in said compressed data state and the
information signal input in said baseband signal state, wherein when rewriting of said
copyright information added to said information signals is necessary, rewriting only said
second copyright information to said information signal in said compressed data state.
Claim 22
Dependent Claim
32 words
The recording method of claim 21, wherein whether or not rewriting of said
copyright information is required is determined by detecting at least said first copyright
information from said baseband information signal.
Claim 23
Dependent Claim
30 words
The recording method of claim 21, wherein copyright protection of said
information signal in said compressed data state is implemented in the digital interface based
on said second copyright information.
Claim 24
Dependent Claim
15 words
The recording method of claim 23, wherein said digital interface is an IEEE
1394 interface.
Claim 25
Dependent Claim
33 words
The recording method of claim 21, wherein said copyright information is for
controlling of copy generation and rewriting of said second copyright information is from a
one-time copy-allow state to a copy-prohibit state.
Claim 26
Dependent Claim
22 words
The recording method of claim 21, wherein said second copyright information
is formatted as CGMS (Computer Generation Management System) copy control
information.
Claim 27
Dependent Claim
17 words
The recording method of claim 21, wherein encoding is performed on said
information signals prior to recording.
Claim 28
Dependent Claim
115 words
A recording method for recording information signals input in a baseband
signal state and signals input in a compressed data state, comprising the steps of: adding digital watermarked first copyright information to an information signal in
said baseband signal state; inserting a second copyright information with contents equivalent to said first
copyright information in an information signal in said compressed data state; implementing copyright protection of said information signal in said compressed data
state in a digital interface based on said second copyright information ; detecting from said baseband signal said digital watermark of the first copyright
information, and implementing copyright protection for said information signal in said baseband state
based on the detection results.
Claim 29
Dependent Claim
40 words
The recording method of claim 28 wherein said copyright information is for
controlling copy generation and copyright protection of said information signals is
implemented by utilizing the first copyright information to control whether or not copy
and/or recording is allowed.
Claim 30
Dependent Claim
32 words
The recording method of claim 28, wherein copyright protection based on said
second copyright information implemented in said digital interface by encoding the
information signal and using an IEEE 1394 interface standard.
Claim 31
Dependent Claim
17 words
The recording method of claim 28, wherein encoding is performed on said
compressed information signal upon recording.
Claim 32
Dependent Claim
184 words
A recording device for recording information signals including a first
copyright information as a digital watermark in a baseband information signal, and a second
copyright information having contents equivalent to said first copyright information in a
compressed data information signal, comprising: an analog interface for receiving an input information signal in a baseband state; a digital interface for receiving an input information signal in a compressed data state; encoding means for compression encoding said information signal received from said
analog interface to generate compressed data; selection means for selecting a predetermined portion of said compressed data
received at said digital interface; copyright detection means lot detecting at least a first copyright information from said
predetermined portion of said compressed data selected by said selection means; recording control means for controlling whether or not to record the compressed data
information signal generated from said information signal in said baseband state based on the
detection of said copyright detection means; and copyright information rewrite means for rewriting only said second copyright
information when rewriting of copyright information is required in accordance with said
recording control means.
Claim 33
Dependent Claim
31 words
The recording device of claim 32, wherein said copyright protection is
implemented in said digital interface for said information signals in said compressed data
state based upon said second copyright information.
Claim 34
Dependent Claim
33 words
The recording device of claim 33, wherein copyright protection based on said
second copyright information in said digital interface is implemented by encoding the
information signal and using an IEEE 1394 interface standard.
Claim 35
Dependent Claim
32 words
The recording device of claim 32, wherein said copyright information is for
controlling the copy generation and rewriting of said second copyright information from a
one-time copy-allow state to a copy-prohibit state.
Claim 36
Dependent Claim
22 words
The recording device of claim 32, wherein said second copyright information
is a CGMS (Computer Generation Management System) formatted copy control information.
Claim 37
Dependent Claim
24 words
The recording device of claim 32, wherein said recording device contains an
encoding means for encoding said compressed data state information signal before recording.
Claim 38
Dependent Claim
187 words
A recording device for recording information signals including a first
copyright information as a digital watermark in a baseband information signal, and a second
copyright information having contents equivalent to said first copyright information in a
compressed data information signal, comprising: an analog interface for receiving an input information signal in a baseband state; a digital interface for receiving an input information signal in a compressed data state; means for implementing copyright protection for said information signal in said
compressed data state in said digital interface based upon said second copyright information; detection means for detecting said digital watermarked first copyright information
from said information signal received from said analog interface; recording control means for controlling whether or not to record said information
signal received by said analog interface based on the detection output of said detection
means; encoding means for compression encoding said information signal received from said
analog interface upon recording implemented by said recording control means; and selection means for selecting a predetermined portion of said compressed data
received at said digital interface or said compressed data from said encoding means to be
recorded.
Claim 39
Dependent Claim
32 words
The recording device of claim 38, wherein said copyright information for
controlling copy generation and copyright protection uses said first copyright information to
control whether or not to allow copying and/or recording.
Claim 40
Dependent Claim
34 words
The recording device of claim 38, wherein copyright protection based on said
second copyright information is implemented in said digital interface by encoding of the
information signal and using a IEEE 1394 interface standard.
Claim 41
Dependent Claim
21 words
The recording device of claim 38, wherein said recording device encodes said
information signal 10 a compressed data format upon recording.
Claim 42
Dependent Claim
100 words
An output method for outputting information signals including a first digital
watermark copyright information in an information signal in a baseband state, and a second
copyright information with contents equivalent to said first copyright information added to an
information signal in a compressed data state, comprising the steps of: implementing copy protection in a digital interface based on said second copyright
information when outputting said unchanged compressed data information signal: and adding a second digital watermark copyright information to said baseband
information signal based on said first copyright information detected from said compressed
data when outputting said baseband information signal.
Claim 43
Dependent Claim
27 words
The output method of claim 42, wherein it is determined whether to output
said information signal based upon said second copyright information detected from said
compressed data.
Claim 44
Dependent Claim
29 words
The output method of claim 42, wherein copyright protection based on said
second copyright information is implemented by encoding the information signal and using
an IEEE 1394 interface standard.
Claim 45
Dependent Claim
50 words
The output method of claim 42, wherein said copyright information is for
controlling copy generation, and said second digital watermark copyright information added
to said baseband information signal is set to a copy-prohibit state when said first copyright
information output from said compressed data is in a one-time copy-allow state.
Claim 46
Dependent Claim
62 words
The output method of claim 42, wherein said copyright information is for
controlling copy generation, and said second digital watermark copyright information added
to said baseband information signal is set to a never copy (absolutely no copying) state when
said first copyright information detected from said compressed data is in a one-time copy-allow
state, or in a less restrictive copy protection state.
Claim 47
Dependent Claim
118 words
An output method for outputting information signals and for detecting a first
digital watermark copyright information in a baseband signal and a second copyright
information equivalent with contents to said first copyright information added to an
information signal in a compressed data state, comprising the steps of: decoding said compressed data; converting said decoded data to a baseband information signal; detecting said first copyright information from said baseband information signal; implementing copy protection by means of a digital interface based on said second
copyright information when outputting an unchanged compressed information signal; and adding a second digital watermark copyright information to said baseband
information signal based on said detected first copyright information when outputting said
baseband information signal.
Claim 48
Dependent Claim
25 words
The output method of claim 47, wherein output control is also performed in
accordance with the output of data contained within said baseband information signals.
Claim 49
Dependent Claim
36 words
The output of claim 47, wherein copyright protection implemented in the
digital interface based on said second copyright information is implemented in accordance
with an IEEE 1394 standard along with the encoding of the information signal.
Claim 50
Dependent Claim
50 words
The output method of claim 47, wherein said copyright information is for
controlling copy generation, and said second digital watermark copyright information added
to said baseband information signal is set to a copy-prohibit state when said first copyright
information detected from said compressed data is in a one-time copy-allow state.
Claim 51
Dependent Claim
61 words
The output method of claim 47, wherein said copyright information is for
controlling copy generation, and said second digital watermark copyright information added
to said baseband information signal is set to a never copy (absolutely no copying) state when
said first copyright information detected from said compressed data is in a one-time copy-allow
state, or a more restrictive copy protection state.
Claim 52
Dependent Claim
127 words
An output device for outputting information signals including a first digital
watermark copyright information in an information signal in a baseband state, and a second
copyright information with contents equivalent to said first copyright information added to an
information signal in a compressed data state comprising: copyright detection means for detecting a first copyright information from said
compressed data; a digital interface for implementing copyright protection of said compressed data
information signal in accordance with said copyright information when outputting said
information signal unchanged as compressed data; decoding means for decoding said compressed data information signal; digital watermark addition means for adding a digital watermark copyright
information to said baseband information signal to be output based on said first copyright
information detected by said copyright detection means.
Claim 53
Dependent Claim
31 words
The output device of claim 52, further comprising output control means for
performing output control of said information signal based on said first copyright information
detected by said copyright detection means.
Claim 54
Dependent Claim
34 words
The output device of claim 52, wherein copyright protection based on said
second copyright information is implemented in the digital interface in accordance with an
IEEE 1394 standard and encoding of the information signal.
Claim 55
Dependent Claim
54 words
The output device of claim 52, wherein said copyright information is for
controlling copy generation, and a second digital watermark copyright information added to
said baseband information signal is set to a never copy (absolutely no copying) state when
said first copyright information detected from said compressed data is in a one-time copy-allow
state.
Claim 56
Dependent Claim
62 words
The output device of claim 52, wherein said copyright information is for
controlling copy generation, and a second digital watermark copyright information added to
said baseband information signal is set to a never copy (absolutely no copying) state when
said first copyright information detected from said compressed data is in a one-time copy-allow
state or in a more restrictive copy protection state.
Claim 57
Dependent Claim
132 words
An output device for outputting information signals and for detecting a first
digital watermark copyright information in a baseband signal and a second copyright
information with contents equivalent to said first copyright information added to an
information signal in a compressed data state, comprising: extension decoding means for decoding said compressed data; converting means for converting said decoded data into a baseband information
signal; copyright detection means for detecting a first copyright information from said
baseband information signal; a digital interface for implementing copy protection based on said second copyright
information when outputting an unchanged compressed data information signal and digital watermark addition means for adding a second digital watermark copyright
information to the baseband information signal to be output based on said first copyright
information detected by said copyright detection means.
Claim 58
Dependent Claim
48 words
The output device of claim 57, further comprising first output control means
for controlling the output of said unchanged compressed data based upon copyright
information detected by said copyright information detection means; and a second output control means for controlling the output of said decoded baseband
information signals.
Claim 59
Dependent Claim
27 words
The output device of claim 57, wherein the digital interface is implemented in
accordance with an IEEE 1394 standard along with the encoding of the information signal.
Claim 60
Dependent Claim
50 words
The output device of claim 57, wherein said copyright information is for
controlling copy generation, and a second digital watermark copyright information added to
said baseband information signal is set to a copy-prohibit state when said first copyright
information detected from said compressed data is in a one-time copy-allow state.
Claim 61
Dependent Claim
61 words
The output device of claim 57, wherein said copyright information is for
controlling copy generation, and a second digital watermark copyright information added to
said baseband information signal is set to a never copy (absolutely no copying) state when
said first copyright information detected front said compressed data is in a one-time copy-allow
status in a more restrictive copy protection state.
References Cited (Backward Citations)
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