GB1407272A - Brightness and contrast control circuit - Google Patents

Brightness and contrast control circuit

Info

Publication number
GB1407272A
GB1407272A GB3958074A GB3958074A GB1407272A GB 1407272 A GB1407272 A GB 1407272A GB 3958074 A GB3958074 A GB 3958074A GB 3958074 A GB3958074 A GB 3958074A GB 1407272 A GB1407272 A GB 1407272A
Authority
GB
United Kingdom
Prior art keywords
brightness
control circuit
contrast control
contrast
clamis
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.)
Expired
Application number
GB3958074A
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.)
Tektronix Inc
Original Assignee
Tektronix Inc
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 Tektronix Inc filed Critical Tektronix Inc
Priority to GB3958074A priority Critical patent/GB1407272A/en
Publication of GB1407272A publication Critical patent/GB1407272A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • 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)
  • Television Receiver Circuits (AREA)

Abstract

1407272 Television TEKTRONIX Inc 17 Oct 1972 39580/74 Divided out of 1407271 Heading H4F The subject-matter of the Specification is the same as that of Specification 1,407,271, the clamis however relate to the contrast and brightness controls.
GB3958074A 1972-10-17 1972-10-17 Brightness and contrast control circuit Expired GB1407272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3958074A GB1407272A (en) 1972-10-17 1972-10-17 Brightness and contrast control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3958074A GB1407272A (en) 1972-10-17 1972-10-17 Brightness and contrast control circuit

Publications (1)

Publication Number Publication Date
GB1407272A true GB1407272A (en) 1975-09-24

Family

ID=10410325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3958074A Expired GB1407272A (en) 1972-10-17 1972-10-17 Brightness and contrast control circuit

Country Status (1)

Country Link
GB (1) GB1407272A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459610A (en) * 1980-09-08 1984-07-10 Sanyo Electric Co., Ltd. Saturation and contrast adjusting circuit
EP0425993A2 (en) * 1989-11-01 1991-05-08 Thomson Consumer Electronics, Inc. Control of brightness level adapted to control of picture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459610A (en) * 1980-09-08 1984-07-10 Sanyo Electric Co., Ltd. Saturation and contrast adjusting circuit
EP0425993A2 (en) * 1989-11-01 1991-05-08 Thomson Consumer Electronics, Inc. Control of brightness level adapted to control of picture
EP0425993A3 (en) * 1989-11-01 1992-03-04 Thomson Consumer Electronics, Inc. Control of brightness level adapted to control of picture
TR25041A (en) * 1989-11-01 1992-09-01 Thomson Consumer Electronics BRIGHTNESS LEVEL KOTROL ADAPTED TO PICTURE CONTROL.
SG119128A1 (en) * 1989-11-01 2006-02-28 Thomson Consumer Electronics Control of brightness level adapted to control of picture

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee