HK1036376A1 - Copy control for a video signal - Google Patents

Copy control for a video signal

Info

Publication number
HK1036376A1
HK1036376A1 HK01104789.6A HK01104789A HK1036376A1 HK 1036376 A1 HK1036376 A1 HK 1036376A1 HK 01104789 A HK01104789 A HK 01104789A HK 1036376 A1 HK1036376 A1 HK 1036376A1
Authority
HK
Hong Kong
Prior art keywords
video signal
copy control
copy
control
video
Prior art date
Application number
HK01104789.6A
Other languages
English (en)
Inventor
Keiji Kanota
Tadashi Ezaki
Teruhiko Kori
Satoshi Tsuchiya
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of HK1036376A1 publication Critical patent/HK1036376A1/xx

Links

Classifications

    • 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
    • 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
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
    • G11B20/00768—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
    • 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]
    • 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
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • 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
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
    • H04N5/9206—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a character code signal
    • 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
    • H04N2005/91321—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 protection control signal, e.g. a record inhibit signal
    • 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]
HK01104789.6A 1993-04-02 2001-07-10 Copy control for a video signal HK1036376A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7704493 1993-04-02
JP21320693A JP3250333B2 (ja) 1993-04-02 1993-08-27 映像信号処理方法、映像信号記録方法、映像信号再生方法、映像信号処理装置、映像信号記録装置及び映像信号再生装置

Publications (1)

Publication Number Publication Date
HK1036376A1 true HK1036376A1 (en) 2001-12-28

Family

ID=26418142

Family Applications (1)

Application Number Title Priority Date Filing Date
HK01104789.6A HK1036376A1 (en) 1993-04-02 2001-07-10 Copy control for a video signal

Country Status (8)

Country Link
US (4) US5991500A (ko)
EP (2) EP1069772B1 (ko)
JP (1) JP3250333B2 (ko)
KR (5) KR100328211B1 (ko)
CA (1) CA2120380C (ko)
DE (2) DE69435210D1 (ko)
HK (1) HK1036376A1 (ko)
TW (1) TW345794B (ko)

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Also Published As

Publication number Publication date
DE69427205T2 (de) 2001-11-08
KR100323048B1 (ko) 2002-02-09
CA2120380C (en) 2002-12-24
US5991500A (en) 1999-11-23
KR100328211B1 (ko) 2002-08-21
USRE43520E1 (en) 2012-07-17
EP1069772B1 (en) 2009-05-06
EP1069772A3 (en) 2006-01-11
CA2120380A1 (en) 1994-10-03
USRE43240E1 (en) 2012-03-13
DE69427205D1 (de) 2001-06-21
JP3250333B2 (ja) 2002-01-28
EP0618723A1 (en) 1994-10-05
USRE43854E1 (en) 2012-12-11
EP0618723B1 (en) 2001-05-16
KR100355373B1 (ko) 2002-10-12
EP1069772A2 (en) 2001-01-17
KR100398913B1 (ko) 2003-09-19
DE69435210D1 (de) 2009-06-18
JPH06339110A (ja) 1994-12-06
TW345794B (en) 1998-11-21
KR100323047B1 (ko) 2002-02-09

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