GB1238009A - - Google Patents

Info

Publication number
GB1238009A
GB1238009A GB1238009DA GB1238009A GB 1238009 A GB1238009 A GB 1238009A GB 1238009D A GB1238009D A GB 1238009DA GB 1238009 A GB1238009 A GB 1238009A
Authority
GB
United Kingdom
Prior art keywords
oscillator
vhf
uhf
delay
switch
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
Other languages
English (en)
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 filed Critical
Publication of GB1238009A publication Critical patent/GB1238009A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Circuits Of Receivers In General (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
GB1238009D 1968-03-01 1969-02-28 Expired GB1238009A (US08124317-20120228-C00060.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70970368A 1968-03-01 1968-03-01

Publications (1)

Publication Number Publication Date
GB1238009A true GB1238009A (US08124317-20120228-C00060.png) 1971-07-07

Family

ID=24851000

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238009D Expired GB1238009A (US08124317-20120228-C00060.png) 1968-03-01 1969-02-28

Country Status (7)

Country Link
US (1) US3548315A (US08124317-20120228-C00060.png)
BE (1) BE728367A (US08124317-20120228-C00060.png)
DE (1) DE1909974C3 (US08124317-20120228-C00060.png)
ES (1) ES364172A1 (US08124317-20120228-C00060.png)
FR (1) FR2002979A1 (US08124317-20120228-C00060.png)
GB (1) GB1238009A (US08124317-20120228-C00060.png)
NL (1) NL157165B (US08124317-20120228-C00060.png)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662271A (en) * 1969-07-07 1972-05-09 Standard Kollsman Ind Inc Solid state television tuner
US3688198A (en) * 1971-04-14 1972-08-29 Rca Corp Vhf and uhf automatic gain control circuitry derived from a single control voltage
DE3115683C2 (de) * 1981-04-18 1983-07-28 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Schaltungsanordnung zur verzögerten, automatischen Verstärkungsregelung
US4411019A (en) * 1982-01-25 1983-10-18 Zenith Radio Corporation AGC System for television receivers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2105641A (en) * 1935-05-03 1938-01-18 Rca Corp Automatic volume control circuit

Also Published As

Publication number Publication date
NL6903146A (US08124317-20120228-C00060.png) 1969-09-03
BE728367A (US08124317-20120228-C00060.png) 1969-07-16
DE1909974C3 (de) 1979-07-05
DE1909974B2 (de) 1975-11-13
ES364172A1 (es) 1971-02-01
DE1909974A1 (de) 1969-09-25
FR2002979A1 (fr) 1969-11-07
NL157165B (nl) 1978-06-15
FR2002979B1 (US08124317-20120228-C00060.png) 1974-02-22
US3548315A (en) 1970-12-15

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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