CA1269442C - SCRAMBLED VIDEO SIGNAL PROCESSING SYSTEM AUDIO CHANNEL AGC - Google Patents

SCRAMBLED VIDEO SIGNAL PROCESSING SYSTEM AUDIO CHANNEL AGC

Info

Publication number
CA1269442C
CA1269442C CA532612A CA532612A CA1269442C CA 1269442 C CA1269442 C CA 1269442C CA 532612 A CA532612 A CA 532612A CA 532612 A CA532612 A CA 532612A CA 1269442 C CA1269442 C CA 1269442C
Authority
CA
Canada
Prior art keywords
gain control
video signal
restored
agc
video
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
CA532612A
Other languages
English (en)
French (fr)
Other versions
CA1269442A (en
Inventor
Mark Francis Rumreich
Gary Allen Whitledge
William Adamson Lagoni
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
Application granted granted Critical
Publication of CA1269442A publication Critical patent/CA1269442A/en
Publication of CA1269442C publication Critical patent/CA1269442C/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
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • 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)
  • Television Receiver Circuits (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Television Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
CA532612A 1986-03-27 1987-03-20 SCRAMBLED VIDEO SIGNAL PROCESSING SYSTEM AUDIO CHANNEL AGC Expired CA1269442C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US844,542 1977-10-26
US06/844,542 US4718086A (en) 1986-03-27 1986-03-27 AGC in sound channel of system for processing a scrambled video signal

Publications (2)

Publication Number Publication Date
CA1269442A CA1269442A (en) 1990-05-22
CA1269442C true CA1269442C (en) 1990-05-22

Family

ID=25293007

Family Applications (1)

Application Number Title Priority Date Filing Date
CA532612A Expired CA1269442C (en) 1986-03-27 1987-03-20 SCRAMBLED VIDEO SIGNAL PROCESSING SYSTEM AUDIO CHANNEL AGC

Country Status (7)

Country Link
US (1) US4718086A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JP2517267B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR950006240B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1269442C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3709902A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2596604B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2188501B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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JPS6448584A (en) * 1987-08-18 1989-02-23 Alps Electric Co Ltd Catv converter
JPH01169883U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1988-05-19 1989-11-30
JPH0693775B2 (ja) * 1988-09-21 1994-11-16 パイオニア株式会社 Ｃａｔｖ端末装置
JP2515086Y2 (ja) * 1989-03-08 1996-10-23 株式会社東芝 映像中間周波処理回路
US4974087A (en) * 1989-04-13 1990-11-27 Rca Licensing Corporation Parallel sound if with reference carrier derived from quasi-synchronous video detector
US5113440A (en) * 1989-07-21 1992-05-12 Oci Communcations, Inc. Universal decoder
JPH0396180A (ja) * 1989-09-08 1991-04-22 Sony Corp 受信装置
US5177613A (en) * 1990-02-26 1993-01-05 Thomson Consumer Electronics, Inc. Quasi-parallel if with shared saw filter
US5235424A (en) * 1992-02-06 1993-08-10 General Electric Company Automatic gain control system for a high definition television signal receiver
KR940007241B1 (ko) * 1992-03-09 1994-08-10 삼성전자 주식회사 반도체 메모리 장치의 로우 리던던시장치
US5305109A (en) * 1992-09-08 1994-04-19 Samsung Electronics Co., Ltd. Parallel untuned video if amplifiers supplied signals from TV 1st detector via respective input filters
US5365279A (en) * 1992-09-08 1994-11-15 Samsung Electronics Co., Ltd. Using D-C feedback with on-chip filtering to balance I-F drive to second detector in monolithic IC
US5331290A (en) * 1992-09-08 1994-07-19 Samsung Electronics Co., Ltd. Variable gain amplifier
DE4314767A1 (de) * 1993-05-05 1994-11-10 Philips Patentverwaltung Schaltungsanordnung zum Regeln der Amplitude eines Tonsignals
US5812665A (en) * 1995-06-08 1998-09-22 Ictv, Inc. Switched channel system
US6169584B1 (en) * 1997-12-05 2001-01-02 Motorola, Inc. Automatic modulation control of sync suppressed television signals
DE69924214T2 (de) * 1998-11-27 2006-03-23 Alps Electric Co., Ltd. Fernsehsignalempfängstuner
JP3612224B2 (ja) 1998-11-27 2005-01-19 アルプス電気株式会社 テレビジョン信号受信チューナー
KR100373440B1 (ko) * 2000-10-06 2003-02-25 주식회사 아진비젼 영상 송수신 제한 장치
JP2003018565A (ja) * 2001-06-28 2003-01-17 Pioneer Electronic Corp 映像信号伝送装置
EP1615430B1 (en) * 2003-04-15 2011-08-10 Asahi Kasei EMD Corporation Automatic gain control circuit
US8074248B2 (en) 2005-07-26 2011-12-06 Activevideo Networks, Inc. System and method for providing video content associated with a source image to a television in a communication network
US20100146139A1 (en) * 2006-09-29 2010-06-10 Avinity Systems B.V. Method for streaming parallel user sessions, system and computer software
WO2008088752A2 (en) * 2007-01-12 2008-07-24 Ictv, Inc. System and method for encoding scrolling raster images
US9826197B2 (en) 2007-01-12 2017-11-21 Activevideo Networks, Inc. Providing television broadcasts over a managed network and interactive content over an unmanaged network to a client device
KR20130138263A (ko) 2010-10-14 2013-12-18 액티브비디오 네트웍스, 인코포레이티드 케이블 텔레비전 시스템을 이용하는 비디오 장치들 간의 디지털 비디오의 스트리밍
US9204203B2 (en) 2011-04-07 2015-12-01 Activevideo Networks, Inc. Reduction of latency in video distribution networks using adaptive bit rates
US10409445B2 (en) 2012-01-09 2019-09-10 Activevideo Networks, Inc. Rendering of an interactive lean-backward user interface on a television
US9800945B2 (en) 2012-04-03 2017-10-24 Activevideo Networks, Inc. Class-based intelligent multiplexing over unmanaged networks
US9123084B2 (en) 2012-04-12 2015-09-01 Activevideo Networks, Inc. Graphical application integration with MPEG objects
US10275128B2 (en) 2013-03-15 2019-04-30 Activevideo Networks, Inc. Multiple-mode system and method for providing user selectable video content
EP3005712A1 (en) 2013-06-06 2016-04-13 ActiveVideo Networks, Inc. Overlay rendering of user interface onto source video
US9219922B2 (en) 2013-06-06 2015-12-22 Activevideo Networks, Inc. System and method for exploiting scene graph information in construction of an encoded video sequence
US9294785B2 (en) 2013-06-06 2016-03-22 Activevideo Networks, Inc. System and method for exploiting scene graph information in construction of an encoded video sequence
US9788029B2 (en) 2014-04-25 2017-10-10 Activevideo Networks, Inc. Intelligent multiplexing using class-based, multi-dimensioned decision logic for managed networks

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE393258A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1931-12-26
GB460675A (en) * 1935-11-27 1937-02-02 Gen Electric Co Ltd Improvements in or relating to television receivers and the like
JPS597810Y2 (ja) * 1977-06-30 1984-03-09 ソニー株式会社 テレビジョン受像機
JPS5642411A (en) * 1979-09-13 1981-04-20 Matsushita Electric Ind Co Ltd Audio intermediate frequency circuit
US4408225A (en) * 1981-07-06 1983-10-04 Zenith Radio Corporation Subscription television decoder
US4470071A (en) * 1982-08-30 1984-09-04 Rca Corporation Television sound detection system using a frequency translation phase-locked loop
US4523228A (en) * 1983-02-15 1985-06-11 Scientific Atlanta Inc. Sync suppression scrambling of television signals for subscription TV
JPS60117882A (ja) * 1983-11-29 1985-06-25 Mitsubishi Electric Corp テレビジヨン受像機
JPS60239188A (ja) * 1984-05-12 1985-11-28 Sony Corp テレビジヨン信号復調装置
US4625240A (en) * 1984-07-25 1986-11-25 Eeco, Inc. Adaptive automatic gain control
US4533361A (en) * 1984-10-09 1985-08-06 Texaco Inc. Middle distillate containing storage stability additive

Also Published As

Publication number Publication date
JPS62236290A (ja) 1987-10-16
GB8706670D0 (en) 1987-04-23
DE3709902A1 (de) 1987-10-08
US4718086A (en) 1988-01-05
KR950006240B1 (ko) 1995-06-12
CA1269442A (en) 1990-05-22
JP2517267B2 (ja) 1996-07-24
FR2596604B1 (fr) 1994-02-04
GB2188501B (en) 1990-08-22
GB2188501A (en) 1987-09-30
KR870009584A (ko) 1987-10-27
DE3709902C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-05-23
FR2596604A1 (fr) 1987-10-02

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Legal Events

Date Code Title Description
MKLA Lapsed
MKLA Lapsed

Effective date: 20030522