JPS6412406B2 - - Google Patents

Info

Publication number
JPS6412406B2
JPS6412406B2 JP56122497A JP12249781A JPS6412406B2 JP S6412406 B2 JPS6412406 B2 JP S6412406B2 JP 56122497 A JP56122497 A JP 56122497A JP 12249781 A JP12249781 A JP 12249781A JP S6412406 B2 JPS6412406 B2 JP S6412406B2
Authority
JP
Japan
Prior art keywords
output
frequency
voltage
afc
threshold voltage
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
JP56122497A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5824226A (ja
Inventor
Tsugio Itagaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56122497A priority Critical patent/JPS5824226A/ja
Priority to CA000408593A priority patent/CA1181878A/en
Priority to US06/404,649 priority patent/US4438528A/en
Publication of JPS5824226A publication Critical patent/JPS5824226A/ja
Publication of JPS6412406B2 publication Critical patent/JPS6412406B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
JP56122497A 1981-08-06 1981-08-06 選局装置 Granted JPS5824226A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56122497A JPS5824226A (ja) 1981-08-06 1981-08-06 選局装置
CA000408593A CA1181878A (en) 1981-08-06 1982-08-03 Channel selection system for an electronic tuner
US06/404,649 US4438528A (en) 1981-08-06 1982-08-03 Channel selection system for an electronic tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56122497A JPS5824226A (ja) 1981-08-06 1981-08-06 選局装置

Publications (2)

Publication Number Publication Date
JPS5824226A JPS5824226A (ja) 1983-02-14
JPS6412406B2 true JPS6412406B2 (en]) 1989-02-28

Family

ID=14837302

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56122497A Granted JPS5824226A (ja) 1981-08-06 1981-08-06 選局装置

Country Status (3)

Country Link
US (1) US4438528A (en])
JP (1) JPS5824226A (en])
CA (1) CA1181878A (en])

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0697730B2 (ja) * 1985-04-30 1994-11-30 ソニー株式会社 電子同調式ｆｍ受信機
CA1259378A (en) * 1985-09-19 1989-09-12 Noriaki Omoto A.f.c. system for broad-band fm receiver
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
IT1221243B (it) * 1988-01-28 1990-06-27 Sgs Thomson Microelectronics Generazione di un impulso di arresto di una procedura di ricerca automatica di una stazione emittente utilizzando un segnale afo prodotto da un sistema di controllo automatico di frequenza di un ricevitore
US4955074A (en) * 1988-05-30 1990-09-04 Matsushita Electric Industrial Co., Ltd. AFC apparatus with selection between average value mode and keyed mode
US5170492A (en) * 1990-01-22 1992-12-08 Motorola, Inc. Digitally frequency-locking a radio transceiver to the received signal
US5542095A (en) * 1993-08-24 1996-07-30 Pacific Communication Sciences Frequency Reference Compensation
CN101295994B (zh) * 2007-04-26 2012-12-19 鸿富锦精密工业（深圳）有限公司 移动通信装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831052B2 (ja) * 1975-04-30 1983-07-04 株式会社東芝 ジユシンソウチ
US4397038A (en) 1979-03-26 1983-08-02 Matsushita Electric Corporation Of America Frequency synthesizer tuning system for television receivers
US4280140A (en) 1980-02-19 1981-07-21 Zenith Radio Corporation Microcomputer-controlled one-step-back automatic frequency control tuning system
US4387469A (en) 1980-06-03 1983-06-07 Clarion Co., Ltd. Tuner control system
US4367558A (en) 1980-12-22 1983-01-04 Motorola, Inc. Method for automatically searching for an RF station

Also Published As

Publication number Publication date
US4438528A (en) 1984-03-20
JPS5824226A (ja) 1983-02-14
CA1181878A (en) 1985-01-29

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