CA1214281A - Digital circuit for the level alignment of an analog signal - Google Patents

Digital circuit for the level alignment of an analog signal

Info

Publication number
CA1214281A
CA1214281A CA000424957A CA424957A CA1214281A CA 1214281 A CA1214281 A CA 1214281A CA 000424957 A CA000424957 A CA 000424957A CA 424957 A CA424957 A CA 424957A CA 1214281 A CA1214281 A CA 1214281A
Authority
CA
Canada
Prior art keywords
digital
output
circuit
analog
signal
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
CA000424957A
Other languages
English (en)
French (fr)
Inventor
Robert Boyer
Jean Y Eouzan
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.)
Thales SA
Original Assignee
Thomson CSF SA
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=9272706&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1214281(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of CA1214281A publication Critical patent/CA1214281A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Analogue/Digital Conversion (AREA)
  • Picture Signal Circuits (AREA)
CA000424957A 1982-04-02 1983-03-30 Digital circuit for the level alignment of an analog signal Expired CA1214281A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8205783A FR2524748A1 (fr) 1982-04-02 1982-04-02 Circuit numerique d'alignement de niveau d'un signal analogique
FR8205783 1982-04-02

Publications (1)

Publication Number Publication Date
CA1214281A true CA1214281A (en) 1986-11-18

Family

ID=9272706

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000424957A Expired CA1214281A (en) 1982-04-02 1983-03-30 Digital circuit for the level alignment of an analog signal

Country Status (6)

Country Link
US (1) US4562471A (en, 2012)
EP (1) EP0091339B1 (en, 2012)
JP (1) JPS58186223A (en, 2012)
CA (1) CA1214281A (en, 2012)
DE (1) DE3363489D1 (en, 2012)
FR (1) FR2524748A1 (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110350921A (zh) * 2018-03-15 2019-10-18 Tdk株式会社 放大器电路装置和用于校准其的方法

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60113586A (ja) * 1983-11-24 1985-06-20 Nec Corp クランプ装置
JPS6139625A (ja) * 1984-07-28 1986-02-25 Victor Co Of Japan Ltd アナログ／デイジタル変換装置
JPS6178221A (ja) * 1984-09-26 1986-04-21 Matsushita Electric Ind Co Ltd クランプ回路
EP0220894B1 (en) * 1985-10-21 1993-03-31 Rank Cintel Limited A clamping circuit for an analogue to digital converter
DE3744076C2 (de) * 1987-12-24 1995-05-11 Broadcast Television Syst Verfahren und Schaltung zur Schwarzwertregelung eines Videosignals
US5325187A (en) * 1988-04-27 1994-06-28 Canon Kabushiki Kaisha Image processing apparatus with back porch period sampling and clamping
DE3817421A1 (de) * 1988-05-21 1990-02-01 Standard Elektrik Lorenz Ag Klemmschaltung mit analog-digital-wandler
JPH0232243U (en, 2012) * 1988-08-22 1990-02-28
GB2228643B (en) * 1989-02-28 1993-05-19 Sony Corp Video signal clamping
JPH0449780A (ja) * 1990-06-18 1992-02-19 Victor Co Of Japan Ltd ビデオ信号クランプ回路
FR2665600A1 (fr) * 1990-08-03 1992-02-07 Thomson Csf Procede de detection pour camera panoramique, camera pour sa mise en óoeuvre, et systeme de veille equipe d'une telle camera.
US5105276A (en) * 1990-11-15 1992-04-14 Eastman Kodak Company DC restoration of sampled imagery signals
JP3047927B2 (ja) * 1991-04-09 2000-06-05 三菱電機株式会社 映像信号クランプ回路
US5270819A (en) * 1991-07-29 1993-12-14 The Grass Valley Group, Inc. Single loop analog-to-digital conversion and video clamping circuit compatible with automated diagnostics
US5371552A (en) * 1991-10-31 1994-12-06 North American Philips Corporation Clamping circuit with offset compensation for analog-to-digital converters
KR0128520B1 (ko) * 1993-02-26 1998-04-04 김광호 동기신호 분배기를 이용한 키드 클램프회로
FR2787275B1 (fr) 1998-12-15 2001-02-23 Thomson Csf Camera numerique et procede de commande numerique associe
JP3807863B2 (ja) * 1999-03-09 2006-08-09 ローム株式会社 Ａ／ｄ変換装置
US7259787B2 (en) * 2003-03-27 2007-08-21 Eastman Kodak Company Digital black clamp circuit in electronic imaging systems
JP4541976B2 (ja) * 2005-06-17 2010-09-08 キヤノン株式会社 表示装置
GB2446844B (en) * 2006-12-05 2011-05-25 Wolfson Microelectronics Plc Callibration circuit and asociated method
CN102281067A (zh) * 2010-06-09 2011-12-14 承景科技股份有限公司 用于模拟数字转换器的错误校正系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2628662C3 (de) * 1976-06-25 1980-03-06 Robert Bosch Gmbh, 7000 Stuttgart System zur Korrektur der digitalen Wertigkeit von Signalen
JPS5946131B2 (ja) * 1976-08-18 1984-11-10 株式会社東芝 符号化回路
JPS5374314A (en) * 1976-12-14 1978-07-01 Nec Corp Transmitting system for composite video signal
JPS56117425A (en) * 1980-02-21 1981-09-14 Nec Corp Analog-digital converting circuit
GB2105547A (en) * 1981-09-11 1983-03-23 Philips Electronic Associated Clamping video signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110350921A (zh) * 2018-03-15 2019-10-18 Tdk株式会社 放大器电路装置和用于校准其的方法

Also Published As

Publication number Publication date
EP0091339B1 (fr) 1986-05-14
FR2524748B1 (en, 2012) 1984-05-18
FR2524748A1 (fr) 1983-10-07
EP0091339A1 (fr) 1983-10-12
DE3363489D1 (en) 1986-06-19
JPS58186223A (ja) 1983-10-31
US4562471A (en) 1985-12-31

Similar Documents

Publication Publication Date Title
CA1214281A (en) Digital circuit for the level alignment of an analog signal
US5341218A (en) Video signals clamping circuit for maintaining DC level of video signals
US4410876A (en) D.C. Stabilized analog-to-digital converter
JPH082046B2 (ja) デジタル・クワドラチュア信号対校正回路
GB2090104A (en) Velocity error compensator for timebase corrector
US4797730A (en) Method and apparatus for controlling the sampling phase of an analog color television signal
US5121207A (en) Digital circuit arrangement for processing an analog video signal at a free running system clock
AU597969B2 (en) Frequency division multiplexed analog to digital converter
US5907369A (en) Television system for displaying main and auxiliary images with color error correction provisions
US4399454A (en) Digital comb filtering for PAL television signals
US5455622A (en) Signal processing apparatus and method for offset compensation of CCD signals
US4766485A (en) Color-difference line-sequence signal processing apparatus
US4864387A (en) PAL video time base corrector inverts color difference signal (V) axis
US5008749A (en) Method and apparatus for generating an auxiliary timing signal in the horizontal blanking interval of a video signal
JPH07193755A (ja) デジタルクランプ回路
JPS60107932A (ja) アナログ・デイジタル変換装置
US4559560A (en) Ghost reduction circuit for a television receiver
US4977460A (en) Video signal reproducing apparatus having setup level elimination
US5251032A (en) Line synchronizing circuit
JP2597650B2 (ja) クランプ回路
WO1992008315A1 (en) Method and apparatus for clamping the black level of a digital video signal
JPH1098383A (ja) 信号変換器
KR100213011B1 (ko) 직류레벨 재생회로
SU1288935A1 (ru) Устройство дл компенсации фоновых составл ющих телевизионного сигнала
JP3259199B2 (ja) 映像信号のａ／ｄ変換回路およびカメラ

Legal Events

Date Code Title Description
MKEX Expiry