BR9906595A - Processo para proteger conteúdo transmitido como uma corrente de dados, sistema de proteção contra cópia para proteger conteúdo, dispositivo fonte para proteger o conteúdo, e, dispositivo mostrador - Google Patents
Processo para proteger conteúdo transmitido como uma corrente de dados, sistema de proteção contra cópia para proteger conteúdo, dispositivo fonte para proteger o conteúdo, e, dispositivo mostradorInfo
- Publication number
- BR9906595A BR9906595A BR9906595-9A BR9906595A BR9906595A BR 9906595 A BR9906595 A BR 9906595A BR 9906595 A BR9906595 A BR 9906595A BR 9906595 A BR9906595 A BR 9906595A
- Authority
- BR
- Brazil
- Prior art keywords
- content
- protect
- pass
- control point
- source device
- Prior art date
Links
- 230000036962 time dependent Effects 0.000 abstract 4
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/4508—Management of client data or end-user data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/106—Enforcing content protection by specific content processing
- G06F21/1063—Personalisation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/16—Program or content traceability, e.g. by watermarking
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
- H04N21/23892—Multiplex stream processing, e.g. multiplex stream encrypting involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
- H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8355—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91328—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91335—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a watermark
Abstract
"PROCESSO PARA PROTEGER CONTEúDO TRANSMITIDO COMO UMA CORRENTE DE DADOS, SISTEMA DE PROTEçãO CONTRA CóPIA PARA PROTEGER CONTEúDO, DISPOSITIVO FONTE PARA PROTEGER O CONTEúDO, E, DISPOSITIVO MOSTRADOR" Sistema de proteção de direitos autorais, para proteger conteúdo no qual um passe dependente de tempo é calculado (314) em um dispositivo fonte (330) pela combinação de um ponto de controle com um passe. O ponto de controle é transmitido (361) de um dispositivo mostrador (340) para o dispositivo fonte antes do dispositivo fonte transmitir (360) conteúdo com marca d'água para o dispositivo mostrador. O ponto de controle também é armazenado (376) no dispositivo mostrador. Em seguida, o dispositivo fonte transmite, para o dispositivo mostrador, conteúdo com marca d'água, o passe, e o passe dependente de tempo. No dispositivo mostrador, o ponto de controle armazenado é comparado (314) com uma contagem corrente de um relógio local (374) que foi utilizado para produzir o ponto de controle. Se o ponto de controle armazenado estiver dentro de uma janela de tempo do relógio local, então o ponto de controle armazenado é combinado (314') com o passe do mesmo modo que o ponto de controle é combinado com o passe no dispositivo fonte. Um resultado da combinação é comparado com o passe dependente de tempo e se o resultado igualar o passe dependente de tempo, então, a marca d'água e o passe podem ser comparados do modo usual para determinar o estado de proteção contra cópia do conteúdo protegido contra cópia (314').
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9272698P | 1998-07-14 | 1998-07-14 | |
US09/276,437 US6865675B1 (en) | 1998-07-14 | 1999-03-25 | Method and apparatus for use of a watermark and a unique time dependent reference for the purpose of copy protection |
PCT/EP1999/004704 WO2000004727A2 (en) | 1998-07-14 | 1999-07-02 | Use of a watermark for the purpose of copy protection |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9906595A true BR9906595A (pt) | 2000-07-18 |
Family
ID=26785978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9906595-9A BR9906595A (pt) | 1998-07-14 | 1999-07-02 | Processo para proteger conteúdo transmitido como uma corrente de dados, sistema de proteção contra cópia para proteger conteúdo, dispositivo fonte para proteger o conteúdo, e, dispositivo mostrador |
Country Status (8)
Country | Link |
---|---|
US (1) | US6865675B1 (pt) |
EP (1) | EP1048172A2 (pt) |
JP (1) | JP2002521885A (pt) |
KR (1) | KR20010023973A (pt) |
CN (1) | CN1189036C (pt) |
BR (1) | BR9906595A (pt) |
MY (1) | MY123216A (pt) |
WO (1) | WO2000004727A2 (pt) |
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US6490355B1 (en) * | 1998-07-14 | 2002-12-03 | Koninklijke Philips Electronics N.V. | Method and apparatus for use of a time-dependent watermark for the purpose of copy protection |
US6865675B1 (en) * | 1998-07-14 | 2005-03-08 | Koninklijke Philips Electronics N.V. | Method and apparatus for use of a watermark and a unique time dependent reference for the purpose of copy protection |
JP2000156641A (ja) * | 1998-11-20 | 2000-06-06 | Sony Corp | 付加情報重畳方法、情報信号複製制御方法、情報信号出力装置および情報信号記録装置 |
US6737957B1 (en) * | 2000-02-16 | 2004-05-18 | Verance Corporation | Remote control signaling using audio watermarks |
US6430301B1 (en) * | 2000-08-30 | 2002-08-06 | Verance Corporation | Formation and analysis of signals with common and transaction watermarks |
-
1999
- 1999-03-25 US US09/276,437 patent/US6865675B1/en not_active Expired - Lifetime
- 1999-07-02 EP EP99934587A patent/EP1048172A2/en not_active Withdrawn
- 1999-07-02 CN CNB998015733A patent/CN1189036C/zh not_active Expired - Fee Related
- 1999-07-02 KR KR1020007002688A patent/KR20010023973A/ko not_active Application Discontinuation
- 1999-07-02 WO PCT/EP1999/004704 patent/WO2000004727A2/en not_active Application Discontinuation
- 1999-07-02 JP JP2000560738A patent/JP2002521885A/ja not_active Withdrawn
- 1999-07-02 BR BR9906595-9A patent/BR9906595A/pt not_active IP Right Cessation
- 1999-07-12 MY MYPI99002926A patent/MY123216A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN1323490A (zh) | 2001-11-21 |
WO2000004727A3 (en) | 2000-11-09 |
CN1189036C (zh) | 2005-02-09 |
WO2000004727A2 (en) | 2000-01-27 |
KR20010023973A (ko) | 2001-03-26 |
MY123216A (en) | 2006-05-31 |
JP2002521885A (ja) | 2002-07-16 |
US6865675B1 (en) | 2005-03-08 |
EP1048172A2 (en) | 2000-11-02 |
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