DK128788A - CODING FOR PROTECTION AGAINST PIRATE COPYING AND AUDIO AND VIDEO SIGNALS - Google Patents
CODING FOR PROTECTION AGAINST PIRATE COPYING AND AUDIO AND VIDEO SIGNALSInfo
- Publication number
- DK128788A DK128788A DK128788A DK128788A DK128788A DK 128788 A DK128788 A DK 128788A DK 128788 A DK128788 A DK 128788A DK 128788 A DK128788 A DK 128788A DK 128788 A DK128788 A DK 128788A
- Authority
- DK
- Denmark
- Prior art keywords
- coding
- audio
- video signals
- protection against
- against pirate
- Prior art date
Links
Classifications
-
- 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
-
- 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
- G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
- G11B20/00123—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers the record carrier being identified by recognising some of its unique characteristics, e.g. a unique defect pattern serving as a physical signature of the record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
- G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873707608 DE3707608A1 (en) | 1987-03-10 | 1987-03-10 | Method of coding to prevent video and audio piracy |
Publications (2)
Publication Number | Publication Date |
---|---|
DK128788D0 DK128788D0 (en) | 1988-03-09 |
DK128788A true DK128788A (en) | 1988-09-11 |
Family
ID=6322659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK128788A DK128788A (en) | 1987-03-10 | 1988-03-09 | CODING FOR PROTECTION AGAINST PIRATE COPYING AND AUDIO AND VIDEO SIGNALS |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE3707608A1 (en) |
DK (1) | DK128788A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1258475B (en) * | 1992-09-04 | 1996-02-26 | PROCEDURE FOR THE IDENTIFICATION OF FILM FILMS, VIDEO CASSETTE MATRICES | |
DE50305185D1 (en) * | 2003-07-11 | 2006-11-09 | Lehmann Gerhardt | Identification of a carrier material for information intended for reproduction |
US7187633B2 (en) * | 2003-07-11 | 2007-03-06 | Gerhard Lehmann | Marking of a data medium material for information intended for reproduction |
US7403708B2 (en) | 2003-11-04 | 2008-07-22 | Eastman Kodak Company | Tracking an image-recording medium using an identifying mark and film encodement |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4040099A (en) * | 1975-07-30 | 1977-08-02 | Cook Laboratories, Inc. | Method and apparatus for preparing recorded program material to render detectable unauthorized magnetic tape duplications, and method and apparatus for detecting such duplications |
GB2104701B (en) * | 1981-08-06 | 1985-06-05 | James Bertram King | Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording) |
FR2534433B1 (en) * | 1982-10-08 | 1986-04-11 | Thomson Csf | METHOD FOR PROTECTING A SEQUENCE OF VIDEO IMAGES AGAINST FRAUDULENT USE AND DEVICES FOR CARRYING OUT SAID METHOD |
EP0162071A1 (en) * | 1983-11-21 | 1985-11-27 | Haute Securite Video Hsv S.A. | Antipiracy device and method for cinematographic and video carriers |
-
1987
- 1987-03-10 DE DE19873707608 patent/DE3707608A1/en not_active Withdrawn
-
1988
- 1988-03-09 DK DK128788A patent/DK128788A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DK128788D0 (en) | 1988-03-09 |
DE3707608A1 (en) | 1988-09-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AHB | Application shelved due to non-payment |