FR2250244B1 - - Google Patents

Info

Publication number
FR2250244B1
FR2250244B1 FR7442573A FR7442573A FR2250244B1 FR 2250244 B1 FR2250244 B1 FR 2250244B1 FR 7442573 A FR7442573 A FR 7442573A FR 7442573 A FR7442573 A FR 7442573A FR 2250244 B1 FR2250244 B1 FR 2250244B1
Authority
FR
France
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.)
Expired
Application number
FR7442573A
Other versions
FR2250244A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Western Australia
Original Assignee
University of Western Australia
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 University of Western Australia filed Critical University of Western Australia
Publication of FR2250244A1 publication Critical patent/FR2250244A1/fr
Application granted granted Critical
Publication of FR2250244B1 publication Critical patent/FR2250244B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Facsimiles In General (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Closed-Circuit Television Systems (AREA)
FR7442573A 1973-10-31 1974-12-23 Expired FR2250244B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU548373 1973-10-31

Publications (2)

Publication Number Publication Date
FR2250244A1 FR2250244A1 (fr) 1975-05-30
FR2250244B1 true FR2250244B1 (fr) 1979-07-06

Family

ID=3695953

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7442573A Expired FR2250244B1 (fr) 1973-10-31 1974-12-23

Country Status (10)

Country Link
US (1) US3958077A (fr)
JP (1) JPS50114111A (fr)
CA (1) CA1021053A (fr)
DE (1) DE2451572A1 (fr)
DK (1) DK566974A (fr)
FR (1) FR2250244B1 (fr)
GB (1) GB1486788A (fr)
IT (1) IT1030768B (fr)
NL (1) NL7414253A (fr)
SE (1) SE400445B (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459611A (en) * 1978-08-28 1984-07-10 Fuji Xerox Co., Ltd. Image conversion system
FR2486746A1 (fr) * 1980-07-11 1982-01-15 Telediffusion Fse Procede de brouillage et de debrouillage d'images de television
DE3126272C1 (de) * 1981-07-03 1983-02-03 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren zur Unterdrückung von Moiréerscheinungen bei der Wiederaufzeichnung bereits gerasterter Bilder
US4821321A (en) * 1981-12-31 1989-04-11 The United States Of America As Represented By The Secretary Of The Army Automatic secure transmission and reception of pictorial information
US4496995A (en) * 1982-03-29 1985-01-29 Eastman Kodak Company Down converting a high frame rate signal to a standard TV frame rate signal by skipping preselected video information
NL8401989A (nl) * 1984-06-22 1986-01-16 Nederlanden Staat Video-eindstation met beeldlijnverhaspeling.
JPS61182391A (ja) * 1985-02-08 1986-08-15 Sogo Keibi Hoshiyou Kk 異常監視装置
US4620224A (en) * 1985-04-03 1986-10-28 Communications Satellite Corp. Video scrambling technique for multiplexed analog component formats
US5136618A (en) * 1989-01-19 1992-08-04 Redband Technologies, Inc. Method and apparatus for bandwidth reduction of modulated signals
US5790599A (en) * 1989-01-19 1998-08-04 Redband Technologies, Inc. Data compression system using source representation
KR0152270B1 (ko) * 1990-04-30 1998-10-15 구자홍 유료 티브이 시스템의 합성 영상신호 암호화 해독 처리 시스템
US5491563A (en) * 1992-02-04 1996-02-13 Aliroo Ltd. Apparatus for scrambling and unscrambling documents
US5325201A (en) * 1992-12-28 1994-06-28 Sony Electronics Inc. Pseudo-random number generator based on a video control counter
US5680454A (en) * 1995-08-04 1997-10-21 Hughes Electronics Method and system for anti-piracy using frame rate dithering
US5861914A (en) * 1996-12-23 1999-01-19 Baumberg; Iosif Method and system for representing information data with deviation of interrogating element from field limit at any point
WO2006133376A2 (fr) * 2005-06-08 2006-12-14 Goodhill Dean K Methode et appareil empechant le piratage des films

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960566A (en) * 1959-06-08 1960-11-15 Ampex Television standards conversion system
GB903796A (en) * 1960-09-05 1962-08-22 Marconi Wireless Telegraph Co Improvements in or relating to television standards conversion apparatus
US3309461A (en) * 1962-08-01 1967-03-14 Battelle Development Corp Pseudo-random electron beam scanning system for narrow bandwidth image transmission
GB1095452A (fr) * 1963-12-27 1900-01-01
US3622697A (en) * 1968-06-24 1971-11-23 Eastman Kodak Co Solid-state scanning array for interlaced signals
US3769452A (en) * 1972-06-08 1973-10-30 Gen Electric Narrow band television system

Also Published As

Publication number Publication date
US3958077A (en) 1976-05-18
CA1021053A (fr) 1977-11-15
SE7413685L (fr) 1975-05-02
JPS50114111A (fr) 1975-09-06
SE400445B (sv) 1978-03-20
IT1030768B (it) 1979-04-10
FR2250244A1 (fr) 1975-05-30
DE2451572A1 (de) 1975-06-12
NL7414253A (nl) 1975-05-02
GB1486788A (en) 1977-09-21
DK566974A (fr) 1975-06-30

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Legal Events

Date Code Title Description
ST Notification of lapse