DE3438564C2 - - Google Patents

Info

Publication number
DE3438564C2
DE3438564C2 DE3438564A DE3438564A DE3438564C2 DE 3438564 C2 DE3438564 C2 DE 3438564C2 DE 3438564 A DE3438564 A DE 3438564A DE 3438564 A DE3438564 A DE 3438564A DE 3438564 C2 DE3438564 C2 DE 3438564C2
Authority
DE
Germany
Prior art keywords
counter
signal
output signal
comparison circuit
value
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
DE3438564A
Other languages
German (de)
English (en)
Other versions
DE3438564A1 (de
Inventor
Kurt Dipl.-Ing. Johannes
Juergen Dipl.-Ing. 2000 Hamburg De Ruprecht
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.)
Philips Intellectual Property and Standards GmbH
Original Assignee
Philips Patentverwaltung GmbH
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=6248426&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3438564(C2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Philips Patentverwaltung GmbH filed Critical Philips Patentverwaltung GmbH
Priority to DE19843438564 priority Critical patent/DE3438564A1/de
Priority to EP85201667A priority patent/EP0179526B1/de
Priority to DE8585201667T priority patent/DE3567138D1/de
Priority to US06/787,393 priority patent/US4689665A/en
Priority to JP60230037A priority patent/JPH0638667B2/ja
Publication of DE3438564A1 publication Critical patent/DE3438564A1/de
Application granted granted Critical
Publication of DE3438564C2 publication Critical patent/DE3438564C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/793—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
DE19843438564 1984-10-20 1984-10-20 Abtastregelkreis Granted DE3438564A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19843438564 DE3438564A1 (de) 1984-10-20 1984-10-20 Abtastregelkreis
EP85201667A EP0179526B1 (de) 1984-10-20 1985-10-11 Abtastregelkreis
DE8585201667T DE3567138D1 (en) 1984-10-20 1985-10-11 Sampling control circuit
US06/787,393 US4689665A (en) 1984-10-20 1985-10-15 Gated control circuit
JP60230037A JPH0638667B2 (ja) 1984-10-20 1985-10-17 ゲート制御回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843438564 DE3438564A1 (de) 1984-10-20 1984-10-20 Abtastregelkreis

Publications (2)

Publication Number Publication Date
DE3438564A1 DE3438564A1 (de) 1986-04-30
DE3438564C2 true DE3438564C2 (en, 2012) 1989-02-02

Family

ID=6248426

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19843438564 Granted DE3438564A1 (de) 1984-10-20 1984-10-20 Abtastregelkreis
DE8585201667T Expired DE3567138D1 (en) 1984-10-20 1985-10-11 Sampling control circuit

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8585201667T Expired DE3567138D1 (en) 1984-10-20 1985-10-11 Sampling control circuit

Country Status (4)

Country Link
US (1) US4689665A (en, 2012)
EP (1) EP0179526B1 (en, 2012)
JP (1) JPH0638667B2 (en, 2012)
DE (2) DE3438564A1 (en, 2012)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989074A (en) * 1988-09-27 1991-01-29 Matsushita Electric Industrial Co., Ltd. Digital automatic gain control apparatus
DE4201564A1 (de) * 1992-01-22 1993-07-29 Thomson Brandt Gmbh Schaltung zur regelung der farbtraegeramplitude in einem videorecorder
JPH05336534A (ja) * 1992-06-04 1993-12-17 Sony Corp レベル検出回路
JP3523890B2 (ja) * 1993-07-01 2004-04-26 ソニー株式会社 クロマ信号復調回路
WO2000019727A1 (en) * 1998-09-25 2000-04-06 Stmicroelectronics Asia Pacific Pte Ltd A digital cut-off control loop for tv using speeding and blanking circuits

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1515301A (en) * 1975-05-16 1978-06-21 Techsyst Ltd Control of variables
US3972626A (en) * 1975-06-17 1976-08-03 General Electric Company Autoranging digital luxmeter
US4028534A (en) * 1976-04-14 1977-06-07 The United States Of America As Represented By The Secretary Of The Army Automatic span circuit
US4161628A (en) * 1978-01-31 1979-07-17 Harris Corporation Technique for tracking amplitude fades for multi-amplitude signalling
US4191995A (en) * 1979-01-02 1980-03-04 Bell Telephone Laboratories, Incorporated Digital automatic gain control circuit
DE3123038A1 (de) * 1981-06-10 1982-12-30 Siemens AG, 1000 Berlin und 8000 München Verfahren und anordnung zur regelung des digitalen chrominanzssignales eines farbfernsehempfaengers
DE3136216A1 (de) * 1981-09-12 1983-03-31 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zum regeln der amplitude des farbsignals
CA1177588A (en) * 1982-02-12 1984-11-06 Ernst A. Munter Digital circuit and method for the detection of call progress tones in telephone systems
DE3266503D1 (en) * 1982-05-27 1985-10-31 Itt Ind Gmbh Deutsche Integrated digital chrominance channel-circuit with controlled amplification
US4525741A (en) * 1982-11-03 1985-06-25 Ncr Corporation Self-adjusting video camera
US4604645A (en) * 1983-09-30 1986-08-05 Rca Corporation Coarse/fine automatic chrominance gain control using a gain adjustable IF amplifier in a digital television receiver
US4602276A (en) * 1984-04-12 1986-07-22 Rca Corporation Digital signal level overload system

Also Published As

Publication number Publication date
EP0179526A3 (en) 1987-06-03
DE3438564A1 (de) 1986-04-30
EP0179526A2 (de) 1986-04-30
JPH0638667B2 (ja) 1994-05-18
EP0179526B1 (de) 1988-12-28
DE3567138D1 (en) 1989-02-02
US4689665A (en) 1987-08-25
JPS61100088A (ja) 1986-05-19

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee