Patent US4332465A successfully refreshed from Google Patents.
Patent US6314518B1 successfully refreshed from Google Patents.
US6314518B1
Expired / Lapsed
US
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System for transferring content information and supplemental information relating thereto
Assignee: US Philips Corp
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Filing: 1998-08-26
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Granted: 2001-11-06
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Expires: 2018-08-26
Abstract
Abstract A system for copy protecting content information has an arrangement for receiving and controlling the playback of encoded video. The video content, e.g. MPEG compressed digital video, is watermarked and includes a control signal indicating the status (e.g. playback only, one generation of copy allowed, etc). In the receiver device a check is performed to allow playback in dependence of the watermark. The watermark is extracted in a separate decoder device, such as an external MPEG decoder. The receiver device starts the playback via the external decoder, and the separate decoder communicates retrieved watermark information via a link to the playback device. The playback device checks the watermark information against further supplemental information, such as a physical mark on the record carrier or the control signal. Said communication may be protected by cryptographic methods, such as a digital signature.
Inventors
- 👤 Johan P. M. G. Linnartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:04
CPC Classifications
G; G06; G06T; G06T1/00; G06T1/0021; G06T1/0085; H; H04; H04N; H04N19/00; H04N19/46; H04N19/467; H04N21/00; H04N21/20; H04N21/23; H04N21/238; H04N21/2389; H04N21/23892; H04N21/80; H04N21/83; H04N21/835; H04N21/8358; H04N5/00; H04N5/76; H04N5/91; H04N5/913; H04N7/00; H04N7/24; G11; G11B; G11B20/00; G11B20/00086; H04N2005/91307; H04N2005/91328; H04N2005/91335; H04N2005/91342; H04N2005/91357; H04N2005/91364
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
125 words
An arrangement for reproducing encoded content information comprising: receiver means for receiving a transfer signal containing supplemental information and encoded content information that includes a watermark at least partly representing the supplemental information, the receiver means including: an output for providing the content information, and control means for controlling reproduction of the content information depending on the supplemental information; detector means for detecting watermark information depending on the watermark; decoder means coupled to the output of the receiver means and for decoding the content information to reproduce the content information; and a decoder device including the decoder means and the detector means and arranged separately from the receiver means; and linking means for providing the watermark information from the detector means to the control means.
Claim 2
Dependent Claim
125 words
An arrangement for reproducing encoded content information comprising: receiver means for receiving a transfer signal containing supplemental information and encoded content information that includes a watermark at least partly representing the supplemental information, the receiver means including: an output for providing the content information, and control means for controlling reproduction of the content information depending on the supplemental information; detector means for detecting watermark information depending on the watermark; decoder means coupled to the output of the receiver means and for decoding the content information to reproduce the content information; and a decoder device including the decoder means and the detector means and arranged separately from the receiver means; and linking means for providing the watermark information from the detector means to the control means.
Claim 3
Dependent Claim
24 words
The arrangement of claim 1 , in which the linking means are arranged for communicating with the decoder device for receiving the watermark information.
Claim 4
Dependent Claim
27 words
The arrangement of claim 2 , in which the control means include an output control switch for controlling the output of the content information from the receiver.
Claim 5
Dependent Claim
24 words
The arrangement of claim 1 , in which the linking means are arranged for communicating with the receiver means for transmitting the watermark information.
Claim 6
Dependent Claim
25 words
The arrangement of claim 4 , in which the decoder device is arranged for decoding video content information and for detecting a pixel domain watermark.
Claim 7
Dependent Claim
30 words
The arrangement of claim 4 , in which the decoder device includes output enabling means, which are controllable by the control means in the receiver means via the linking means.
Claim 8
Dependent Claim
239 words
The arrangement of claim 1 , in which: the control means include an output control switch for enabling the output; the receiver means includes reading means for retrieving the transfer signal from a record carrier; the reading means are arranged to detect a physical mark on the record carrier, which physical mark is indicative of the origin of the record carrier; the receiver means includes means for receiving a control signal which at least partly represents the supplemental information; the control means are arranged for verifying a relationship between the control signal and the watermark information; the receiver means includes recording means for recording the content information on a record carrier; the control means are arranged for controlling the recording depending on the supplemental information; the receiver means includes means for detecting the presence of content information on a record carrier; the linking means are arranged for communicating with the receiver means for transmitting the watermark information; the decoder is arranged for decoding video content information and for detecting a pixel domain watermark; the decoder includes output enabling means, which are controllable by the control means in the receiver means via the linking means; the linking means include means for securing the communication against tampering; and the means for securing the communication includes one or more of: means for encryption or decryption, means for authentication, means for exchanging random numbers, or means for providing or verifying a digital signature.
Claim 9
Dependent Claim
23 words
The arrangement of claim 2 , in which the receiver means includes reading means for retrieving the transfer signal from a record carrier.
Claim 10
Dependent Claim
44 words
The arrangement of claim 2 , in which: the receiver means includes means for receiving a control signal which at least partly represents the supplemental information; and the control means are arranged for verifying a relationship between the control signal and the watermark information.
Claim 11
Dependent Claim
38 words
The arrangement of claim 2 , in which the receiver means includes recording means for recording the content information on a record carrier; and the control means are arranged for controlling the recording depending on the supplemental information.
Claim 12
Dependent Claim
24 words
The arrangement of claim 2 , in which the receiver means includes means for detecting the presence of content information on a record carrier.
Claim 13
Dependent Claim
19 words
The arrangement of claim 2 , in which the linking means include means for securing the communication against tampering.
Claim 14
Dependent Claim
41 words
The arrangement of claim 12 , in which the means for securing the communication include one or more of: means for encryption or decryption, means for authentication, means for exchanging random numbers, or means for providing or verifying a digital signature.
Claim 15
Dependent Claim
29 words
The arrangement of claim 13 , in which the reading means are arranged to detect on a record carrier, a physical mark indicating the origin of the record carrier.
Claim 16
Dependent Claim
72 words
A receiver for receiving via a transfer signal, supplemental information and encoded content information that includes a watermark at least partly representing the supplemental information, the receiver comprising: output means for providing information including the watermark to a detector for detecting watermark information; control means for controlling reproduction of the content information depending on the supplemental information; and linking means for communicating the watermark information from the detector to the control means.
Claim 17
Dependent Claim
72 words
A receiver for receiving via a transfer signal, supplemental information and encoded content information that includes a watermark at least partly representing the supplemental information, the receiver comprising: output means for providing information including the watermark to a detector for detecting watermark information; control means for controlling reproduction of the content information depending on the supplemental information; and linking means for communicating the watermark information from the detector to the control means.
Claim 18
Dependent Claim
112 words
The receiver of claim 15 in which: the receiver further comprises recording means for recording the content information on a record carrier; the control means are arranged for controlling the recording depending on the supplemental information; the receiver further comprises means for detecting the presence of content information on a record carrier; the linking means are arranged for communicating with the receiver for transmitting the watermark information; the linking means include means for securing the communication against tampering; and the means for securing the communication includes one or more of: means for encryption or decryption, means for authentication, means for exchanging random numbers, or means for providing or verifying a digital signature.
Claim 19
Dependent Claim
64 words
A decoder for decoding a transfer signal including supplemental information and encoded content information that includes a watermark at least partly representing the supplemental information, the receiver comprising: detector means for detecting watermark information depending on the watermark; decoder means for decoding the content information; and linking means for communicating the watermark information between the detector means and a control means of a receiver.
Claim 20
Dependent Claim
64 words
A decoder for decoding a transfer signal including supplemental information and encoded content information that includes a watermark at least partly representing the supplemental information, the receiver comprising: detector means for detecting watermark information depending on the watermark; decoder means for decoding the content information; and linking means for communicating the watermark information between the detector means and a control means of a receiver.
Claim 21
Dependent Claim
105 words
The decoder of claim 17 , in which: the linking means are arranged for communicating with the receiver means for transmitting the watermark information; the decoder is arranged for decoding video content information and for detecting a pixel domain watermark; the decoder includes output enabling means, which are controllable by the control means of the receiver via the linking means; the linking means include means for securing the communication against tampering; and the means for securing the communication includes one or more of: means for encryption or decryption, means for authentication, means for exchanging random numbers, or means for providing or verifying a digital signature.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-11-05 | 2005-05-07 | 2005-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-11-05 | 2009-05-07 | 2009-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-11-05 | 2013-05-07 | 2013-11-06 | $7700.00 | Window Closed / Lapsed |