DK169090B1 - Fremgangsmåde og udstyr til kodning og dekodning af et fjernsynsbillede samt system hvor udstyret anvendes - Google Patents
Fremgangsmåde og udstyr til kodning og dekodning af et fjernsynsbillede samt system hvor udstyret anvendes Download PDFInfo
- Publication number
- DK169090B1 DK169090B1 DK379284A DK379284A DK169090B1 DK 169090 B1 DK169090 B1 DK 169090B1 DK 379284 A DK379284 A DK 379284A DK 379284 A DK379284 A DK 379284A DK 169090 B1 DK169090 B1 DK 169090B1
- Authority
- DK
- Denmark
- Prior art keywords
- line
- signal
- samples
- video signal
- segments
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000015654 memory Effects 0.000 claims description 37
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 10
- 238000005070 sampling Methods 0.000 description 13
- 230000009466 transformation Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/169—Systems operating in the time domain of the television signal
- H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Systems (AREA)
- Stereophonic System (AREA)
- Studio Circuits (AREA)
- Silicon Polymers (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Buffer Packaging (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8305076A FR2543386B1 (fr) | 1983-03-21 | 1983-03-21 | Procedes et dispositifs d'embrouillage et de desembrouillage pour images de television |
| FR8305076 | 1983-03-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK379284D0 DK379284D0 (da) | 1984-08-06 |
| DK379284A DK379284A (da) | 1986-02-07 |
| DK169090B1 true DK169090B1 (da) | 1994-08-08 |
Family
ID=9287308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK379284A DK169090B1 (da) | 1983-03-21 | 1984-08-06 | Fremgangsmåde og udstyr til kodning og dekodning af et fjernsynsbillede samt system hvor udstyret anvendes |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US4633310A (de) |
| EP (1) | EP0119945B1 (de) |
| AT (1) | ATE27756T1 (de) |
| DE (1) | DE3464188D1 (de) |
| DK (1) | DK169090B1 (de) |
| FR (1) | FR2543386B1 (de) |
| NO (1) | NO165940C (de) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2543386B1 (fr) * | 1983-03-21 | 1987-03-20 | Telediffusion Fse | Procedes et dispositifs d'embrouillage et de desembrouillage pour images de television |
| US4723282A (en) * | 1985-01-08 | 1988-02-02 | U.S. Philips Corporation | Method and apparatus of decoding and deciphering a rotated video signal |
| FR2575891B1 (fr) * | 1985-01-08 | 1987-02-20 | Labo Electronique Physique | Dispositif de decodage et de dechiffrement de signaux ayant subi un codage de type mac et un chiffrement par permutation circulaire autour d'un ou de deux points de coupure, et dispositif de codage et de chiffrement fonctionnant de facon similaire |
| BE901468A (fr) * | 1985-01-09 | 1985-05-02 | Belge Radio Television | Procede de codage et de decodage d'informations et appareil pour sa mise en oeuvre. |
| FR2584556B1 (fr) * | 1985-07-02 | 1987-09-18 | France Etat | Procede d'embrouillage et de desembrouillage d'images de television |
| US4827510A (en) * | 1986-02-24 | 1989-05-02 | Trw Inc. | Minimization of amplitude gaps in a line-spin scrambled video signal |
| US4964162A (en) * | 1985-09-09 | 1990-10-16 | Trw Inc. | Secure television signal encoding and decoding system |
| DE3822345C1 (en) * | 1988-07-01 | 1989-10-12 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De | Method of improving coding security |
| US5249229A (en) * | 1989-04-04 | 1993-09-28 | Laboratoire Europeen De Recherches Electroniques Avancees Societe En Nom Collectif | Device and method for generating control signals |
| FR2645384B1 (fr) * | 1989-04-04 | 1995-09-01 | Europ Rech Electr Lab | Dispositif et procede de generation de signaux de controle |
| NL194657C (nl) * | 1989-08-04 | 2002-10-04 | Samsung Electronics Co Ltd | Kanaal+ decoderschakelketen voor videocassetteregistratie-inrichtingen. |
| KR930004823B1 (ko) * | 1990-04-14 | 1993-06-08 | 삼성전자 주식회사 | 텔레비젼 신호의 스크램블링 및 디스크램블링 회로 |
| CA2084453A1 (en) * | 1991-12-06 | 1993-06-07 | Stephen S. Walker | Method and apparatus for tagging video frames |
| US5455860A (en) * | 1992-04-17 | 1995-10-03 | Matsushita Electric Industrial Co., Ltd. | Scramble codec |
| JP3372611B2 (ja) | 1993-10-18 | 2003-02-04 | キヤノン株式会社 | 映像伝送システム、映像処理装置及び映像処理方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1097794A (en) * | 1975-08-08 | 1981-03-17 | Harold B. Shutterly | Secure television transmission system |
| GB1602119A (en) * | 1977-11-18 | 1981-11-04 | Shiu Hung Cheung | Pay-tv system |
| FR2431809A1 (fr) * | 1978-07-20 | 1980-02-15 | Telediffusion Fse | Procedes et dispositifs de brouillage et de debrouillage pour images de television |
| US4266243A (en) * | 1979-04-25 | 1981-05-05 | Westinghouse Electric Corp. | Scrambling system for television sound signals |
| CA1182555A (en) * | 1980-02-25 | 1985-02-12 | Robert S. Block | Method and system for secure transmission and reception of video information, particularly for television |
| US4389671A (en) * | 1980-09-29 | 1983-06-21 | Harris Corporation | Digitally-controlled analog encrypton |
| US4405942A (en) * | 1981-02-25 | 1983-09-20 | Telease, Inc. | Method and system for secure transmission and reception of video information, particularly for television |
| US4600942A (en) * | 1982-07-29 | 1986-07-15 | Telease, Inc. | Secure coding and decoding system and method for television program signals |
| FR2533099A1 (fr) * | 1982-09-14 | 1984-03-16 | Radiotechnique | Procede de brouillage d'images de television et dispositif de dechiffrage d'images ainsi brouillees |
| FR2543386B1 (fr) * | 1983-03-21 | 1987-03-20 | Telediffusion Fse | Procedes et dispositifs d'embrouillage et de desembrouillage pour images de television |
-
1983
- 1983-03-21 FR FR8305076A patent/FR2543386B1/fr not_active Expired
-
1984
- 1984-03-19 US US06/590,708 patent/US4633310A/en not_active Expired - Lifetime
- 1984-03-20 AT AT84460002T patent/ATE27756T1/de not_active IP Right Cessation
- 1984-03-20 EP EP84460002A patent/EP0119945B1/de not_active Expired
- 1984-03-20 DE DE8484460002T patent/DE3464188D1/de not_active Expired
- 1984-08-06 DK DK379284A patent/DK169090B1/da active
- 1984-08-27 NO NO843412A patent/NO165940C/no unknown
-
1986
- 1986-09-22 US US06/909,617 patent/US4731837A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| NO165940B (no) | 1991-01-21 |
| NO843412L (no) | 1986-02-28 |
| US4731837A (en) | 1988-03-15 |
| ATE27756T1 (de) | 1987-06-15 |
| DE3464188D1 (en) | 1987-07-16 |
| EP0119945A1 (de) | 1984-09-26 |
| FR2543386A1 (fr) | 1984-09-28 |
| EP0119945B1 (de) | 1987-06-10 |
| DK379284A (da) | 1986-02-07 |
| US4633310A (en) | 1986-12-30 |
| NO165940C (no) | 1991-05-02 |
| FR2543386B1 (fr) | 1987-03-20 |
| DK379284D0 (da) | 1984-08-06 |
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