GB1195451A - Automatic Gain Control Arrangement for Television Receivers - Google Patents

Automatic Gain Control Arrangement for Television Receivers

Info

Publication number
GB1195451A
GB1195451A GB4950/68A GB495068A GB1195451A GB 1195451 A GB1195451 A GB 1195451A GB 4950/68 A GB4950/68 A GB 4950/68A GB 495068 A GB495068 A GB 495068A GB 1195451 A GB1195451 A GB 1195451A
Authority
GB
United Kingdom
Prior art keywords
pulses
clamping
sync
emitter
gain control
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
GB4950/68A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1195451A publication Critical patent/GB1195451A/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
    • H04N5/16—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/18—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H04N5/185—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
    • 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
    • H04N5/52—Automatic gain control
    • H04N5/53—Keyed automatic gain control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
GB4950/68A 1967-02-02 1968-01-31 Automatic Gain Control Arrangement for Television Receivers Expired GB1195451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR93443A FR1517067A (fr) 1967-02-02 1967-02-02 Perfectionnements au procédé et au dispositif de comande automatique de gain et decalage du niveau du noir pour récepteurs de télévision

Publications (1)

Publication Number Publication Date
GB1195451A true GB1195451A (en) 1970-06-17

Family

ID=8624715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4950/68A Expired GB1195451A (en) 1967-02-02 1968-01-31 Automatic Gain Control Arrangement for Television Receivers

Country Status (8)

Country Link
US (1) US3566025A (en:Method)
BE (1) BE710241A (en:Method)
CH (1) CH465003A (en:Method)
DE (1) DE1537977A1 (en:Method)
ES (1) ES350055A1 (en:Method)
FR (1) FR1517067A (en:Method)
GB (1) GB1195451A (en:Method)
NL (1) NL6801380A (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927255A (en) * 1974-05-01 1975-12-16 Rca Corp Black level clamping circuit for a television signal processor
FR2473823A1 (fr) * 1980-01-14 1981-07-17 Dassault Electronique Installation pour la transmission d'informations par ligne omnibus optique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288926A (en) * 1963-07-01 1966-11-29 Northern Electric Co Direct current restoration curcuit
US3305637A (en) * 1963-10-31 1967-02-21 Hazeltine Research Inc Control apparatus for a television receiver comprising a back porch keyed agc system

Also Published As

Publication number Publication date
ES350055A1 (es) 1969-04-16
BE710241A (en:Method) 1968-08-01
NL6801380A (en:Method) 1968-08-05
US3566025A (en) 1971-02-23
CH465003A (de) 1968-11-15
DE1537977A1 (de) 1970-07-23
FR1517067A (fr) 1968-03-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees