JPS5961378A - 黒レベル補正回路 - Google Patents

黒レベル補正回路

Info

Publication number
JPS5961378A
JPS5961378A JP57172398A JP17239882A JPS5961378A JP S5961378 A JPS5961378 A JP S5961378A JP 57172398 A JP57172398 A JP 57172398A JP 17239882 A JP17239882 A JP 17239882A JP S5961378 A JPS5961378 A JP S5961378A
Authority
JP
Japan
Prior art keywords
circuit
black level
output
contrast
control circuit
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
JP57172398A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0119794B2 (cs
Inventor
Koichi Sunada
砂田　厚一
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co Ltd
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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP57172398A priority Critical patent/JPS5961378A/ja
Publication of JPS5961378A publication Critical patent/JPS5961378A/ja
Publication of JPH0119794B2 publication Critical patent/JPH0119794B2/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
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)
JP57172398A 1982-09-30 1982-09-30 黒レベル補正回路 Granted JPS5961378A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57172398A JPS5961378A (ja) 1982-09-30 1982-09-30 黒レベル補正回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57172398A JPS5961378A (ja) 1982-09-30 1982-09-30 黒レベル補正回路

Publications (2)

Publication Number Publication Date
JPS5961378A true JPS5961378A (ja) 1984-04-07
JPH0119794B2 JPH0119794B2 (cs) 1989-04-13

Family

ID=15941196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57172398A Granted JPS5961378A (ja) 1982-09-30 1982-09-30 黒レベル補正回路

Country Status (1)

Country Link
JP (1) JPS5961378A (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339114A (en) * 1992-07-29 1994-08-16 Thomson Consumer Electronics, Inc. Television receiver with luminance signal clamped offset and re-clamped prior to contrast control for preventing black level changes with contrast control changes when displaying luminance signals having elevated black level
US5453798A (en) * 1993-02-05 1995-09-26 Thomson Consumer Electronics, Inc. Black compensation circuit for a video display system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339114A (en) * 1992-07-29 1994-08-16 Thomson Consumer Electronics, Inc. Television receiver with luminance signal clamped offset and re-clamped prior to contrast control for preventing black level changes with contrast control changes when displaying luminance signals having elevated black level
US5453798A (en) * 1993-02-05 1995-09-26 Thomson Consumer Electronics, Inc. Black compensation circuit for a video display system

Also Published As

Publication number Publication date
JPH0119794B2 (cs) 1989-04-13

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