JPS5255321A - Tv receiver - Google Patents

Tv receiver

Info

Publication number
JPS5255321A
JPS5255321A JP50130443A JP13044375A JPS5255321A JP S5255321 A JPS5255321 A JP S5255321A JP 50130443 A JP50130443 A JP 50130443A JP 13044375 A JP13044375 A JP 13044375A JP S5255321 A JPS5255321 A JP S5255321A
Authority
JP
Japan
Prior art keywords
receiver
black level
control circuit
clamp control
reproduction performance
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.)
Pending
Application number
JP50130443A
Other languages
Japanese (ja)
Inventor
Kuninori Kasagi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50130443A priority Critical patent/JPS5255321A/en
Publication of JPS5255321A publication Critical patent/JPS5255321A/en
Pending legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Details Of Television Scanning (AREA)

Abstract

PURPOSE:To obtain a TV receiver which can improve gradation reproduction performance near black level through black level correction against APL variation by installing pedestal clamp control circuit 10.
JP50130443A 1975-10-31 1975-10-31 Tv receiver Pending JPS5255321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50130443A JPS5255321A (en) 1975-10-31 1975-10-31 Tv receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50130443A JPS5255321A (en) 1975-10-31 1975-10-31 Tv receiver

Publications (1)

Publication Number Publication Date
JPS5255321A true JPS5255321A (en) 1977-05-06

Family

ID=15034355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50130443A Pending JPS5255321A (en) 1975-10-31 1975-10-31 Tv receiver

Country Status (1)

Country Link
JP (1) JPS5255321A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415929A (en) * 1980-10-15 1983-11-15 Alps Electric Co., Ltd. Video clamp circuit
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415929A (en) * 1980-10-15 1983-11-15 Alps Electric Co., Ltd. Video clamp circuit
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

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