DE68916066D1 - System zur automatischen Verstärkungsregelung. - Google Patents

System zur automatischen Verstärkungsregelung.

Info

Publication number
DE68916066D1
DE68916066D1 DE68916066T DE68916066T DE68916066D1 DE 68916066 D1 DE68916066 D1 DE 68916066D1 DE 68916066 T DE68916066 T DE 68916066T DE 68916066 T DE68916066 T DE 68916066T DE 68916066 D1 DE68916066 D1 DE 68916066D1
Authority
DE
Germany
Prior art keywords
control system
gain control
automatic gain
automatic
gain
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 - Lifetime
Application number
DE68916066T
Other languages
English (en)
Other versions
DE68916066T2 (de
Inventor
Toyokastu Koga
Isao Kawahara
Yoshimichi Ohtsuka
Tadashi Kawashima
Yuichi Ninomiya
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.)
Panasonic Corp
Japan Broadcasting Corp
Original Assignee
NIPPON HOSO KYOKAI TOKIO/TOKYO
Japan Broadcasting Corp
Matsushita Electric Industrial 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 NIPPON HOSO KYOKAI TOKIO/TOKYO, Japan Broadcasting Corp, Matsushita Electric Industrial Co Ltd filed Critical NIPPON HOSO KYOKAI TOKIO/TOKYO
Application granted granted Critical
Publication of DE68916066D1 publication Critical patent/DE68916066D1/de
Publication of DE68916066T2 publication Critical patent/DE68916066T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
    • H03M1/129—Means for adapting the input signal to the range the converter can handle, e.g. limiting, pre-scaling ; Out-of-range indication
    • H03M1/1295—Clamping, i.e. adjusting the DC level of the input signal to a predetermined value
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
    • H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
    • H03M1/182—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the reference levels of the analogue/digital converter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Television Systems (AREA)
  • Analogue/Digital Conversion (AREA)
  • Television Receiver Circuits (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Picture Signal Circuits (AREA)
DE68916066T 1988-03-04 1989-03-03 System zur automatischen Verstärkungsregelung. Expired - Lifetime DE68916066T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63051936A JP2678006B2 (ja) 1988-03-04 1988-03-04 自動利得制御装置

Publications (2)

Publication Number Publication Date
DE68916066D1 true DE68916066D1 (de) 1994-07-21
DE68916066T2 DE68916066T2 (de) 1994-11-17

Family

ID=12900753

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68916066T Expired - Lifetime DE68916066T2 (de) 1988-03-04 1989-03-03 System zur automatischen Verstärkungsregelung.

Country Status (6)

Country Link
US (1) US4998106A (de)
EP (1) EP0331506B1 (de)
JP (1) JP2678006B2 (de)
KR (1) KR930000456B1 (de)
CA (1) CA1299754C (de)
DE (1) DE68916066T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084700A (en) * 1991-02-04 1992-01-28 Thomson Consumer Electronics, Inc. Signal clamp circuitry for analog-to-digital converters
US5488368A (en) * 1993-05-28 1996-01-30 Technoview Inc. A/D converter system and method with temperature compensation
US5359327A (en) * 1993-05-28 1994-10-25 Brown Eric W A/D converter system with interface and passive voltage reference source
US5644325A (en) * 1994-12-12 1997-07-01 Auravision Corporation Digital to analog converter with improved output level control
KR100207713B1 (ko) * 1997-01-17 1999-07-15 윤종용 아날로그-디지탈 변환기의 top 전압을 이용한 agc 회로
JP4746792B2 (ja) * 2001-08-14 2011-08-10 富士通セミコンダクター株式会社 Ａ／ｄ変換装置
US8428536B2 (en) * 2008-11-25 2013-04-23 Silicon Laboratories Inc. Low-cost receiver using automatic gain control

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016557A (en) * 1975-05-08 1977-04-05 Westinghouse Electric Corporation Automatic gain controlled amplifier apparatus
JPS60217789A (ja) * 1984-04-13 1985-10-31 Hitachi Ltd 高品位テレビ受信機
US4642694A (en) * 1984-05-22 1987-02-10 Casio Computer Co., Ltd. Television video signal A/D converter
US4549165A (en) * 1984-06-22 1985-10-22 Rockwell International Corporation Dynamic voltage reference apparatus for A/D converters

Also Published As

Publication number Publication date
JP2678006B2 (ja) 1997-11-17
JPH01226284A (ja) 1989-09-08
KR930000456B1 (ko) 1993-01-21
DE68916066T2 (de) 1994-11-17
EP0331506A2 (de) 1989-09-06
CA1299754C (en) 1992-04-28
EP0331506B1 (de) 1994-06-15
EP0331506A3 (de) 1991-07-31
KR890015595A (ko) 1989-10-30
US4998106A (en) 1991-03-05

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: NIPPON HOSO KYOKAI, TOKIO/TOKYO, JP

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP