JPS56106477A - Circuit for inserting character in television screen - Google Patents

Circuit for inserting character in television screen

Info

Publication number
JPS56106477A
JPS56106477A JP958780A JP958780A JPS56106477A JP S56106477 A JPS56106477 A JP S56106477A JP 958780 A JP958780 A JP 958780A JP 958780 A JP958780 A JP 958780A JP S56106477 A JPS56106477 A JP S56106477A
Authority
JP
Japan
Prior art keywords
brightness
character
signal
signal input
character frame
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
JP958780A
Other languages
Japanese (ja)
Other versions
JPH0235510B2 (en
Inventor
Tetsuo Shimizu
Toyoaki Igarashi
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.)
Pioneer Video Corp
Universal Pioneer Corp
Original Assignee
Pioneer Video Corp
Universal Pioneer 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 Pioneer Video Corp, Universal Pioneer Corp filed Critical Pioneer Video Corp
Priority to JP958780A priority Critical patent/JPS56106477A/en
Publication of JPS56106477A publication Critical patent/JPS56106477A/en
Publication of JPH0235510B2 publication Critical patent/JPH0235510B2/ja
Granted 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
    • H04N5/278—Subtitling

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Circuits (AREA)

Abstract

PURPOSE:To increase the visibility, by lowering the brightness within the character frame provided on a TV screen less than the brightness of periphery to secure a higher brightness of characters for display. CONSTITUTION:Brightness signal Y of a prescribed level is always supplied to the brightness signal input terminal 26 for the character to be displayed. When the character signal F is supplied from the character signal input terminal 28, the electronic switch 23 touches the Y side. As a result, the voltage having the level of the signal Y is delivered to the video signal output terminal 24 for the period during which the pulse of the signal F is produced. At the same time, the character frame signal input is connected to the electronic switch 22, and the character frame is compounded with the video signal input 20 to be applied to the switch 23. In such a way, the brightness within the character frame is lowered less than the ambient brightness when the character is displayed, thus ensuring an easy-to-see display of characters.
JP958780A 1980-01-30 1980-01-30 Circuit for inserting character in television screen Granted JPS56106477A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP958780A JPS56106477A (en) 1980-01-30 1980-01-30 Circuit for inserting character in television screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP958780A JPS56106477A (en) 1980-01-30 1980-01-30 Circuit for inserting character in television screen

Publications (2)

Publication Number Publication Date
JPS56106477A true JPS56106477A (en) 1981-08-24
JPH0235510B2 JPH0235510B2 (en) 1990-08-10

Family

ID=11724446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP958780A Granted JPS56106477A (en) 1980-01-30 1980-01-30 Circuit for inserting character in television screen

Country Status (1)

Country Link
JP (1) JPS56106477A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588266U (en) * 1981-07-08 1983-01-19 日本電気ホームエレクトロニクス株式会社 Character signal mixing device
JPS5876279U (en) * 1981-11-16 1983-05-23 日本電気ホームエレクトロニクス株式会社 Color signal processing device
JPS5883866U (en) * 1981-11-30 1983-06-07 日本電気ホームエレクトロニクス株式会社 signal voltage regulator
JPS5883865U (en) * 1981-11-30 1983-06-07 日本電気ホームエレクトロニクス株式会社 signal voltage regulator
JPS58172274U (en) * 1982-05-10 1983-11-17 赤井電機株式会社 Character input circuit
JPS58223968A (en) * 1982-06-22 1983-12-26 Matsushita Electric Ind Co Ltd Black frame insertion circuit
JPS6036692U (en) * 1983-08-22 1985-03-13 パイオニア株式会社 display device
JPS6161579A (en) * 1984-09-03 1986-03-29 Omron Tateisi Electronics Co Electronic still camera system
JPS61214877A (en) * 1985-03-20 1986-09-24 Matsushita Electric Ind Co Ltd Video signal processor
JPS6467080A (en) * 1987-09-07 1989-03-13 Fuji Photo Film Co Ltd Superimposing circuit
US5418576A (en) * 1992-01-27 1995-05-23 U. S. Philips Corporation Television receiver with perceived contrast reduction in a predetermined area of a picture where text is superimposed
JP2002344959A (en) * 2001-05-21 2002-11-29 Clarion Co Ltd Parking aid system and its control method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07288424A (en) * 1993-05-29 1995-10-31 R C S:Kk Leak antenna
JP4700366B2 (en) * 2005-02-14 2011-06-15 三洋電機株式会社 On-screen display circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132228U (en) * 1974-08-30 1976-03-09
JPS52138834A (en) * 1976-05-14 1977-11-19 Mitsubishi Electric Corp Multiple signal reproducer
JPS5324223A (en) * 1976-08-19 1978-03-06 Sony Corp Pickup device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132228U (en) * 1974-08-30 1976-03-09
JPS52138834A (en) * 1976-05-14 1977-11-19 Mitsubishi Electric Corp Multiple signal reproducer
JPS5324223A (en) * 1976-08-19 1978-03-06 Sony Corp Pickup device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588266U (en) * 1981-07-08 1983-01-19 日本電気ホームエレクトロニクス株式会社 Character signal mixing device
JPS5876279U (en) * 1981-11-16 1983-05-23 日本電気ホームエレクトロニクス株式会社 Color signal processing device
JPS5883866U (en) * 1981-11-30 1983-06-07 日本電気ホームエレクトロニクス株式会社 signal voltage regulator
JPS5883865U (en) * 1981-11-30 1983-06-07 日本電気ホームエレクトロニクス株式会社 signal voltage regulator
JPS58172274U (en) * 1982-05-10 1983-11-17 赤井電機株式会社 Character input circuit
JPS58223968A (en) * 1982-06-22 1983-12-26 Matsushita Electric Ind Co Ltd Black frame insertion circuit
JPS6036692U (en) * 1983-08-22 1985-03-13 パイオニア株式会社 display device
JPS6161579A (en) * 1984-09-03 1986-03-29 Omron Tateisi Electronics Co Electronic still camera system
JPS61214877A (en) * 1985-03-20 1986-09-24 Matsushita Electric Ind Co Ltd Video signal processor
JPS6467080A (en) * 1987-09-07 1989-03-13 Fuji Photo Film Co Ltd Superimposing circuit
US5418576A (en) * 1992-01-27 1995-05-23 U. S. Philips Corporation Television receiver with perceived contrast reduction in a predetermined area of a picture where text is superimposed
JP2002344959A (en) * 2001-05-21 2002-11-29 Clarion Co Ltd Parking aid system and its control method

Also Published As

Publication number Publication date
JPH0235510B2 (en) 1990-08-10

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