GB699713A - Improvements relating to television - Google Patents

Improvements relating to television

Info

Publication number
GB699713A
GB699713A GB21106/51A GB2110651A GB699713A GB 699713 A GB699713 A GB 699713A GB 21106/51 A GB21106/51 A GB 21106/51A GB 2110651 A GB2110651 A GB 2110651A GB 699713 A GB699713 A GB 699713A
Authority
GB
United Kingdom
Prior art keywords
sept
television
valve
fed
improvements relating
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
GB21106/51A
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.)
Edison Swan Electric Co Ltd
Original Assignee
Edison Swan 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 Edison Swan Electric Co Ltd filed Critical Edison Swan Electric Co Ltd
Publication of GB699713A publication Critical patent/GB699713A/en
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
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/202—Gamma control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)

Abstract

699,713. Valve non-linear amplifying circuit. EDISON SWAN ELECTRIC CO., Ltd. Sept. 6, 1951 [Sept. 8, 1950], No. 21106/51. Class 40 (vi). In a television system, contrast-distortion due to the brightness/grid voltage curve of the C.R.T. of the receiver is reduced by interposing a differential amplifier V2, V1<SP>1</SP>, one valve V2 being fed directly with the input V while the other is fed from a variable-mu cathode follower V1. The valves V2, V2<SP>1</SP> are coupled over resistor R3 and the output is taken from the anodes of terminals 3, 4. Specification 536,089 is referred to.
GB21106/51A 1950-09-08 1951-09-06 Improvements relating to television Expired GB699713A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1024418T 1950-09-08

Publications (1)

Publication Number Publication Date
GB699713A true GB699713A (en) 1953-11-11

Family

ID=9578821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21106/51A Expired GB699713A (en) 1950-09-08 1951-09-06 Improvements relating to television

Country Status (2)

Country Link
FR (1) FR1024418A (en)
GB (1) GB699713A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258708A (en) * 1961-12-28 1966-06-28 Grambow phase-inversion circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258708A (en) * 1961-12-28 1966-06-28 Grambow phase-inversion circuit

Also Published As

Publication number Publication date
FR1024418A (en) 1953-04-01

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