AU5706180A - Video copying inhibitor - Google Patents
Video copying inhibitorInfo
- Publication number
- AU5706180A AU5706180A AU57061/80A AU5706180A AU5706180A AU 5706180 A AU5706180 A AU 5706180A AU 57061/80 A AU57061/80 A AU 57061/80A AU 5706180 A AU5706180 A AU 5706180A AU 5706180 A AU5706180 A AU 5706180A
- Authority
- AU
- Australia
- Prior art keywords
- inhibitor
- video copying
- copying
- video
- copying inhibitor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
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
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00818—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 limits the signal quality, e.g. by low-pass filtering of audio signals or by reducing the resolution of video signals
- G11B20/00826—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 limits the signal quality, e.g. by low-pass filtering of audio signals or by reducing the resolution of video signals wherein a spoiler signal is added to degrade the signal quality
-
- 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
-
- 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
- H04N2005/91314—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 pulse signal inserted in blanking intervals of the video signal, e.g. pseudo-AGC pulses, pseudo-sync pulses
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Television Signal Processing For Recording (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPD8353 | 1979-04-11 | ||
AUPD835379 | 1979-04-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
AU5706180A true AU5706180A (en) | 1980-10-16 |
Family
ID=3768060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU57061/80A Abandoned AU5706180A (en) | 1979-04-11 | 1979-04-11 | Video copying inhibitor |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU5706180A (en) |
GB (1) | GB2050675A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU624334B2 (en) * | 1987-07-29 | 1992-06-11 | Scitec Corporation | Copy protected pre-recorded videotape |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2117549A (en) * | 1982-03-19 | 1983-10-12 | Kegmatics Limited | Security marking video tape recordings |
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 |
FR2540659A1 (en) * | 1983-02-09 | 1984-08-10 | Sisex | DEVICE FOR PROTECTING MAGNETIC TAPES, OR OTHER RECORDING MEDIA, OR TELEVISION OR RADIO TRANSMISSION AGAINST UNAUTHORIZED READING AND / OR REPRODUCTION |
NL8500515A (en) * | 1985-02-22 | 1986-09-16 | Arie Marinus Wijnen | METHOD AND APPARATUS FOR SECURING IMAGE SIGNALS |
DE3851724T2 (en) * | 1987-07-08 | 1995-05-04 | Matsushita Electric Ind Co Ltd | Method and device for protecting copy signals. |
-
1979
- 1979-04-11 AU AU57061/80A patent/AU5706180A/en not_active Abandoned
-
1980
- 1980-04-08 GB GB8011538A patent/GB2050675A/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU624334B2 (en) * | 1987-07-29 | 1992-06-11 | Scitec Corporation | Copy protected pre-recorded videotape |
Also Published As
Publication number | Publication date |
---|---|
GB2050675A (en) | 1981-01-07 |
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