DE69032838D1 - Automatisches Frequenzabstimmungsverfahren und dieses Verfahren verwendetes Empfangsgerät - Google Patents

Automatisches Frequenzabstimmungsverfahren und dieses Verfahren verwendetes Empfangsgerät

Info

Publication number
DE69032838D1
DE69032838D1 DE69032838T DE69032838T DE69032838D1 DE 69032838 D1 DE69032838 D1 DE 69032838D1 DE 69032838 T DE69032838 T DE 69032838T DE 69032838 T DE69032838 T DE 69032838T DE 69032838 D1 DE69032838 D1 DE 69032838D1
Authority
DE
Germany
Prior art keywords
receiving device
device used
automatic frequency
frequency tuning
tuning method
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 - Fee Related
Application number
DE69032838T
Other languages
English (en)
Other versions
DE69032838T2 (de
Inventor
Takao Nishiyama
Hisao Okada
Tatsuaki Doumura
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of DE69032838D1 publication Critical patent/DE69032838D1/de
Application granted granted Critical
Publication of DE69032838T2 publication Critical patent/DE69032838T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Television Receiver Circuits (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)
  • Synchronizing For Television (AREA)
DE69032838T 1989-09-29 1990-09-28 Automatisches Frequenzabstimmungsverfahren und dieses Verfahren verwendetes Empfangsgerät Expired - Fee Related DE69032838T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1255701A JPH0648778B2 (ja) 1989-09-29 1989-09-29 衛星放送受信装置のａｆｃ方法

Publications (2)

Publication Number Publication Date
DE69032838D1 true DE69032838D1 (de) 1999-01-28
DE69032838T2 DE69032838T2 (de) 1999-07-29

Family

ID=17282432

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69032838T Expired - Fee Related DE69032838T2 (de) 1989-09-29 1990-09-28 Automatisches Frequenzabstimmungsverfahren und dieses Verfahren verwendetes Empfangsgerät

Country Status (5)

Country Link
US (1) US5107335A (de)
EP (1) EP0420275B1 (de)
JP (1) JPH0648778B2 (de)
KR (1) KR0152079B1 (de)
DE (1) DE69032838T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2098660C (en) * 1992-06-23 1999-08-03 Gen Suganuma Automatic frequency control circuit
JP3319491B2 (ja) * 1995-01-19 2002-09-03 船井電機株式会社 放送波チャンネル同調方法
JP3966523B2 (ja) * 1997-10-20 2007-08-29 富士通株式会社 自動周波数制御回路及び自動周波数制御方法
US6158498A (en) * 1997-10-21 2000-12-12 Wagstaff, Inc. Casting of molten metal in an open ended mold cavity
EP1497922A4 (de) * 2002-04-25 2005-05-04 Thomson Licensing Sa Synchronisationssignalprozessor
JP3942608B2 (ja) * 2004-07-07 2007-07-11 Ｎｅｃエレクトロニクス株式会社 衛星放送用コンバータのスイッチ回路
US20060053453A1 (en) * 2004-08-31 2006-03-09 Sanyo Electric Co., Ltd. Wireless redistribution system for terrestrial digital television broadcasting and receiving system for terrestrial digital television broadcasting
US10523261B2 (en) * 2016-03-31 2019-12-31 Apple Inc. Co-channel wireless detection

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161698A (en) * 1974-08-31 1979-07-17 Licentia, Patent-Verwaltungs-G.M.B.H. Tuning circuit for superheterodyne receiver
US4365349A (en) * 1980-02-01 1982-12-21 Nippon Gakki Seizo Kabushiki Kaisha Radio receiver having phase locked loop and automatic frequency control loop for stably maintaining local oscillator frequency of voltage-controlled local oscillator
JPS5752280A (en) * 1980-09-12 1982-03-27 Sanyo Electric Co Ltd Line selector of television set
JPS57135582A (en) * 1981-02-16 1982-08-21 Hitachi Ltd Reception circuit for fm television signal
ES8406020A1 (es) * 1982-09-01 1984-06-16 Rca Corp "perfeccionamientos introducidos en un aparato de control de sintonizacion para un sistema de television"
JPS6178230A (ja) * 1984-09-26 1986-04-21 Nec Corp 集積化ａｍ／ｆｍ切換回路
US4817197A (en) * 1986-07-18 1989-03-28 Nippon Telegraph And Telephone Corporation Mobile communication apparatus
US4727591A (en) * 1986-09-04 1988-02-23 Arvin Industries, Inc. Microprocessor controlled tuning system
JPS63161718A (ja) * 1986-12-24 1988-07-05 Matsushita Electric Ind Co Ltd 選局装置
JPS6411408A (en) * 1987-07-03 1989-01-17 Nec Corp Automatic frequency sweeping method for frequency synthesizer type channel selecting device
JPH0628418B2 (ja) * 1987-11-19 1994-04-13 シャープ株式会社 ２方式共用チューナ
NL8801874A (nl) * 1988-07-26 1990-02-16 Philips Nv Televisie-ontvanger met een afstemschakeling die een frequentiesyntheseschakeling bevat.
US4977613A (en) * 1988-10-17 1990-12-11 Motorola, Inc. Fine tuning frequency synthesizer with feedback loop for frequency control systems
US4991226A (en) * 1989-06-13 1991-02-05 Bongiorno James W FM detector with deviation manipulation

Also Published As

Publication number Publication date
JPH03117207A (ja) 1991-05-20
KR910007297A (ko) 1991-04-30
EP0420275A3 (en) 1991-07-24
EP0420275A2 (de) 1991-04-03
US5107335A (en) 1992-04-21
DE69032838T2 (de) 1999-07-29
KR0152079B1 (ko) 1998-11-02
EP0420275B1 (de) 1998-12-16
JPH0648778B2 (ja) 1994-06-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee