JPS61502438A - 自動利得制御回路 - Google Patents

自動利得制御回路

Info

Publication number
JPS61502438A
JPS61502438A JP60502455A JP50245585A JPS61502438A JP S61502438 A JPS61502438 A JP S61502438A JP 60502455 A JP60502455 A JP 60502455A JP 50245585 A JP50245585 A JP 50245585A JP S61502438 A JPS61502438 A JP S61502438A
Authority
JP
Japan
Prior art keywords
output
gain control
automatic gain
input
control circuit
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.)
Granted
Application number
JP60502455A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0573319B2 (en]
Inventor
ゲイ，マイケル　ジヨン
Original Assignee
モトロ−ラ・インコ−ポレ−テツド
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10562023&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS61502438(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by モトロ−ラ・インコ−ポレ−テツド filed Critical モトロ−ラ・インコ−ポレ−テツド
Publication of JPS61502438A publication Critical patent/JPS61502438A/ja
Publication of JPH0573319B2 publication Critical patent/JPH0573319B2/ja
Granted 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/18—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous and sequential signals, e.g. SECAM-system
    • H04N11/186—Decoding means therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • 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
    • H03G3/3068—Circuits generating control signals for both R.F. and I.F. stages
    • 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)
  • Power Engineering (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Processing Of Color Television Signals (AREA)
JP60502455A 1984-06-06 1985-06-06 自動利得制御回路 Granted JPS61502438A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848414452A GB8414452D0 (en) 1984-06-06 1984-06-06 Automatic gain control circuit
GB8414452 1984-06-06

Publications (2)

Publication Number Publication Date
JPS61502438A true JPS61502438A (ja) 1986-10-23
JPH0573319B2 JPH0573319B2 (en]) 1993-10-14

Family

ID=10562023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60502455A Granted JPS61502438A (ja) 1984-06-06 1985-06-06 自動利得制御回路

Country Status (8)

Country Link
US (1) US4667163A (en])
EP (1) EP0195010B2 (en])
JP (1) JPS61502438A (en])
KR (1) KR940006367B1 (en])
DE (1) DE3567339D1 (en])
GB (1) GB8414452D0 (en])
SG (1) SG15491G (en])
WO (1) WO1985005743A1 (en])

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140424A (en) * 1987-07-07 1992-08-18 Canon Kabushiki Kaisha Image signal processing apparatus with noise reduction
US4926132A (en) * 1989-08-28 1990-05-15 Motorola Inc. FM detector with reduced distortion
DE4311943B4 (de) * 1993-04-10 2005-09-29 Philips Intellectual Property & Standards Gmbh Schaltungsanordnung zum Begrenzen der Amplitude eines Nutzsignals
FR2726423B1 (fr) * 1994-10-31 1997-01-17 Sgs Thomson Microelectronics Sa Detecteur de norme de television couleur a faible seuil de reception
US5907261A (en) * 1997-09-05 1999-05-25 Ericsson Inc. Method and apparatus for controlling signal amplitude level
US7443455B2 (en) * 2003-12-30 2008-10-28 Texas Instruments Incorporated Automatic gain control based on multiple input references in a video decoder

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003393B1 (en) * 1978-01-18 1982-06-23 Rca Corporation Chroma demodulator circuit for secam television signals
NL182684C (nl) * 1979-11-23 1988-04-18 Philips Nv Regelbare vermenigvuldigschakeling bevattende eerste en tweede transistoren in lange staartschakeling met gekoppelde emitterelektroden.
DD156655A1 (de) * 1981-02-24 1982-09-08 Winfried Zippe Schaltungsanordnung zur selbsttaetigen einstellung optimaler signalamplituden an frequenzfiltern
US4563653A (en) * 1981-03-30 1986-01-07 Pertec Computer Corporation Servo preamplifier and demodulator chain using transconductance balanced modulators
JPS5974710A (ja) * 1982-10-22 1984-04-27 Pioneer Electronic Corp クォードラチャ検波器

Also Published As

Publication number Publication date
GB8414452D0 (en) 1984-07-11
EP0195010B2 (en) 1996-11-27
KR940006367B1 (ko) 1994-07-18
WO1985005743A1 (en) 1985-12-19
EP0195010A1 (en) 1986-09-24
SG15491G (en) 1991-08-23
KR860700190A (ko) 1986-03-31
US4667163A (en) 1987-05-19
JPH0573319B2 (en]) 1993-10-14
EP0195010B1 (en) 1989-01-04
DE3567339D1 (en) 1989-02-09

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