FR2392559A1 - Circuit de traitement de signaux d'images - Google Patents

Circuit de traitement de signaux d'images

Info

Publication number
FR2392559A1
FR2392559A1 FR7815319A FR7815319A FR2392559A1 FR 2392559 A1 FR2392559 A1 FR 2392559A1 FR 7815319 A FR7815319 A FR 7815319A FR 7815319 A FR7815319 A FR 7815319A FR 2392559 A1 FR2392559 A1 FR 2392559A1
Authority
FR
France
Prior art keywords
signal
image signal
processing circuit
signal processing
frequency
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.)
Granted
Application number
FR7815319A
Other languages
English (en)
Other versions
FR2392559B1 (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.)
Sony Corp
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 FR2392559A1 publication Critical patent/FR2392559A1/fr
Application granted granted Critical
Publication of FR2392559B1 publication Critical patent/FR2392559B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/265—Mixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/2622—Signal amplitude transition in the zone between image portions, e.g. soft edges

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

L'invention concerne un circuit de traitement de signaux d'image destiné à produire un signal de fondu. Ce circuit comporte un dispositif qui produit un signal de commande en divisant la fréquence d'un signal qui est un multiple entier de la fréquence de synchronisation verticale d'un signal d'image, un dispositif qui compte le signal diviseur en fréquence et un dispositif qui convertit le comptage numérique en un signal analogique correspondant, utilisé comme signal de commande. Application à la télévision.
FR7815319A 1977-05-24 1978-05-23 Circuit de traitement de signaux d'images Expired FR2392559B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5930577A JPS53144621A (en) 1977-05-24 1977-05-24 Video signal processing system

Publications (2)

Publication Number Publication Date
FR2392559A1 true FR2392559A1 (fr) 1978-12-22
FR2392559B1 FR2392559B1 (fr) 1985-10-31

Family

ID=13109519

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7815319A Expired FR2392559B1 (fr) 1977-05-24 1978-05-23 Circuit de traitement de signaux d'images

Country Status (11)

Country Link
US (1) US4223351A (fr)
JP (1) JPS53144621A (fr)
AT (1) AT378641B (fr)
AU (1) AU516733B2 (fr)
CA (1) CA1129543A (fr)
DE (1) DE2822719C2 (fr)
FR (1) FR2392559B1 (fr)
GB (1) GB1585953A (fr)
IT (1) IT1095912B (fr)
NL (1) NL7805642A (fr)
SE (1) SE438402B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300959A1 (de) * 1982-01-15 1983-07-28 Quantel Ltd., Newbury, Berkshire Bildmischvorrichtung und -verfahren
GB2158318A (en) * 1984-04-26 1985-11-06 Philips Electronic Associated Fading circuit for video signals
US4698682A (en) * 1986-03-05 1987-10-06 Rca Corporation Video apparatus and method for producing the illusion of motion from a sequence of still images
US4887159A (en) * 1987-03-26 1989-12-12 The Grass Valley Group Inc. Shadow visual effects wipe generator
US4780763A (en) * 1987-03-27 1988-10-25 The Grass Valley Group, Inc. Video special effects apparatus
US4890163A (en) * 1988-04-06 1989-12-26 Grass Valley Group, Inc. Interrupting a transition sequence between video sources
JPH02205891A (ja) * 1989-02-03 1990-08-15 Mitsubishi Electric Corp 画像表示制御回路
US5023720A (en) * 1989-10-30 1991-06-11 The Grass Valley Group, Inc. Single channel video push effect
US5260695A (en) * 1990-03-14 1993-11-09 Hewlett-Packard Company Color map image fader for graphics window subsystem
US5083203A (en) * 1990-05-31 1992-01-21 Samsung Electronics Co., Ltd. Control signal spreader
JP3470440B2 (ja) * 1995-02-28 2003-11-25 ソニー株式会社 ランプ信号生成方法、ランプ信号生成装置、液晶駆動装置及び液晶表示装置
US5831638A (en) * 1996-03-08 1998-11-03 International Business Machines Corporation Graphics display system and method for providing internally timed time-varying properties of display attributes
US6459459B1 (en) 1998-01-07 2002-10-01 Sharp Laboratories Of America, Inc. Method for detecting transitions in sampled digital video sequences
JP2005044187A (ja) * 2003-07-23 2005-02-17 Casio Comput Co Ltd 送信装置および動画付きメール送信方法
US20050018050A1 (en) * 2003-07-23 2005-01-27 Casio Computer Co., Ltd. Wireless communication device, dynamic image preparation method and dynamic image preparation program

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598908A (en) * 1968-08-30 1971-08-10 Ampex Digitally controlled lap dissolver
US3989889A (en) * 1975-04-02 1976-11-02 Sonex International Corporation Digital dissolver

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB799767A (en) * 1955-09-29 1958-08-13 Philips Electrical Ind Ltd A test pattern attachment for a television camera
US3941925A (en) * 1975-03-10 1976-03-02 Sarkes Tarzian, Inc. Digital soft edge video transition system
US3989888A (en) * 1975-08-14 1976-11-02 Sarkes Tarzian, Inc. Horizontal and vertical soft edge video transition system with edge compression
US4134129A (en) * 1976-12-13 1979-01-09 Bell & Howell Company Tri-directional positioning device for optical system including locking means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598908A (en) * 1968-08-30 1971-08-10 Ampex Digitally controlled lap dissolver
US3989889A (en) * 1975-04-02 1976-11-02 Sonex International Corporation Digital dissolver

Also Published As

Publication number Publication date
IT1095912B (it) 1985-08-17
JPS6114706B2 (fr) 1986-04-19
GB1585953A (en) 1981-03-11
AU516733B2 (en) 1981-06-18
SE7805898L (sv) 1978-11-25
JPS53144621A (en) 1978-12-16
NL7805642A (nl) 1978-11-28
FR2392559B1 (fr) 1985-10-31
IT7823719A0 (it) 1978-05-23
AU3638378A (en) 1979-11-29
DE2822719C2 (de) 1986-01-09
DE2822719A1 (de) 1978-11-30
US4223351A (en) 1980-09-16
SE438402B (sv) 1985-04-15
AT378641B (de) 1985-09-10
CA1129543A (fr) 1982-08-10

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Legal Events

Date Code Title Description
ST Notification of lapse