DE3787481D1 - Fernsehabstimmsystem mit AFT-Einrichtung. - Google Patents

Fernsehabstimmsystem mit AFT-Einrichtung.

Info

Publication number
DE3787481D1
DE3787481D1 DE87300856T DE3787481T DE3787481D1 DE 3787481 D1 DE3787481 D1 DE 3787481D1 DE 87300856 T DE87300856 T DE 87300856T DE 3787481 T DE3787481 T DE 3787481T DE 3787481 D1 DE3787481 D1 DE 3787481D1
Authority
DE
Germany
Prior art keywords
aft
facility
voting system
amplitude
aft 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 - Lifetime
Application number
DE87300856T
Other languages
English (en)
Other versions
DE3787481T2 (de
Inventor
William John Testin
Juri Tults
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.)
RCA Licensing Corp
Original Assignee
RCA Licensing Corp
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 RCA Licensing Corp filed Critical RCA Licensing Corp
Publication of DE3787481D1 publication Critical patent/DE3787481D1/de
Application granted granted Critical
Publication of DE3787481T2 publication Critical patent/DE3787481T2/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
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Alarm Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Selective Calling Equipment (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Noise Elimination (AREA)
DE87300856T 1986-01-31 1987-01-30 Fernsehabstimmsystem mit AFT-Einrichtung. Expired - Lifetime DE3787481T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/824,602 US4689685A (en) 1986-01-31 1986-01-31 Television tuning system with AFT provisions

Publications (2)

Publication Number Publication Date
DE3787481D1 true DE3787481D1 (de) 1993-10-28
DE3787481T2 DE3787481T2 (de) 1994-04-21

Family

ID=25241833

Family Applications (1)

Application Number Title Priority Date Filing Date
DE87300856T Expired - Lifetime DE3787481T2 (de) 1986-01-31 1987-01-30 Fernsehabstimmsystem mit AFT-Einrichtung.

Country Status (10)

Country Link
US (1) US4689685A (de)
EP (1) EP0237167B1 (de)
JP (1) JPH07110056B2 (de)
KR (1) KR960001545B1 (de)
AT (1) ATE95021T1 (de)
CA (1) CA1237519A (de)
DE (1) DE3787481T2 (de)
ES (1) ES2043650T3 (de)
FI (1) FI83012C (de)
NZ (1) NZ219126A (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2685744B2 (ja) * 1986-08-20 1997-12-03 三菱電機株式会社 テレビジヨン信号選局装置
US4868892A (en) * 1987-05-08 1989-09-19 Rca Licensing Corporation Tuning system with provisions for calculating the local oscillator frequency from an aft characteristic
US4955074A (en) * 1988-05-30 1990-09-04 Matsushita Electric Industrial Co., Ltd. AFC apparatus with selection between average value mode and keyed mode
NL8801874A (nl) * 1988-07-26 1990-02-16 Philips Nv Televisie-ontvanger met een afstemschakeling die een frequentiesyntheseschakeling bevat.
JP2768712B2 (ja) * 1989-01-10 1998-06-25 株式会社東芝 選局装置
JP2844690B2 (ja) * 1989-07-11 1999-01-06 ソニー株式会社 Ａｆｔ回路
US5212554A (en) * 1990-12-31 1993-05-18 Thomson Consumer Electronics, Inc. Digital method and apparatus for evaluating a frequency parameter of an if signal
US5204746A (en) * 1991-03-05 1993-04-20 Farrell Scott O Method and apparatus for frequency modulating a phase locked loop with video information
US5233425A (en) * 1991-10-24 1993-08-03 Zenith Electronics Corporation Adaptive AFT system with variable step resolution
KR100242415B1 (ko) * 1996-11-28 2000-02-01 윤종용 2차 국부발진회로
EP1926306A1 (de) * 2006-11-24 2008-05-28 Thomson Licensing Verfahren und Vorrichtung für automatische Feinabstimmung basierend auf Synchronisationserkennung
US9509353B2 (en) * 2014-08-20 2016-11-29 Nxp B.V. Data processing device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2162367C3 (de) * 1971-12-16 1983-01-05 Blaupunkt-Werke Gmbh, 3200 Hildesheim Schaltungsanordnung zur automatischen, elektronischen Scharfabstimmung in einem Fernsehempfänger
JPS55147884A (en) * 1979-05-07 1980-11-18 Sanyo Electric Co Ltd Aft circuit of television receiver
US4302778A (en) * 1980-06-30 1981-11-24 Zenith Radio Corporation AFT-wide automatic frequency control system and method
GB2094080B (en) * 1981-02-18 1984-11-07 Sony Corp Automatic fine tuning circuits for television receivers
US4405947A (en) * 1981-05-08 1983-09-20 Rca Corporation Dual search mode type tuning system
US4387400A (en) * 1981-05-11 1983-06-07 Zenith Radio Corporation Tuning system for a television receiver
US4429415A (en) * 1981-11-30 1984-01-31 Rca Corporation Signal-seeking tuning system with signal loss protection for a television receiver

Also Published As

Publication number Publication date
FI870294A0 (fi) 1987-01-23
DE3787481T2 (de) 1994-04-21
JPH07110056B2 (ja) 1995-11-22
KR870007631A (ko) 1987-08-20
NZ219126A (en) 1990-03-27
ATE95021T1 (de) 1993-10-15
FI83012C (fi) 1991-05-10
KR960001545B1 (en) 1996-02-01
CA1237519A (en) 1988-05-31
EP0237167A3 (en) 1989-10-25
EP0237167A2 (de) 1987-09-16
FI870294A (fi) 1987-08-01
ES2043650T3 (es) 1994-01-01
FI83012B (fi) 1991-01-31
EP0237167B1 (de) 1993-09-22
US4689685A (en) 1987-08-25
JPS62183684A (ja) 1987-08-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: WOERDEMANN, H., DIPL.-ING., PAT.-ANW., 31787 HAMELN

8320 Willingness to grant licences declared (paragraph 23)