JPS567517A - Automatic control unit for tuning frequency of tuner - Google Patents

Automatic control unit for tuning frequency of tuner

Info

Publication number
JPS567517A
JPS567517A JP8330679A JP8330679A JPS567517A JP S567517 A JPS567517 A JP S567517A JP 8330679 A JP8330679 A JP 8330679A JP 8330679 A JP8330679 A JP 8330679A JP S567517 A JPS567517 A JP S567517A
Authority
JP
Japan
Prior art keywords
detuning
tuning
detection signal
reversible counter
state
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.)
Granted
Application number
JP8330679A
Other languages
Japanese (ja)
Other versions
JPS6049374B2 (en
Inventor
Yoshiharu Ueki
Shozaburo Sakaguchi
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP54083306A priority Critical patent/JPS6049374B2/en
Publication of JPS567517A publication Critical patent/JPS567517A/en
Publication of JPS6049374B2 publication Critical patent/JPS6049374B2/en
Expired 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
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To automatically enable the tuning at optimum tuning point, by detecting the detuning state and the detuning direction taking the tuning point as reference and up or down count operation of reversible counter in accordance with the detuning direction at detuning. CONSTITUTION:In accordance with the contents of count of the reversible counter 3 possible up and down count, the tuning frequency of the tuning circuit is controlled 1. In this case, the detuning detection circuit 6 detects the detuning state and the detuning direction taking the tuning point as reference, to generate the detuning sate detection signal S1 and the detuning direction detection signal S3. Further, during the presence of the state detection signal S1, the pulse signal 2 is transmitted to the reversible counter 3 and the reversible counter 3 performs up or down count operation during the state detection signal S1 in accordance with the direction detection signal S3.
JP54083306A 1979-06-29 1979-06-29 Tuner tuning frequency automatic control device Expired JPS6049374B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54083306A JPS6049374B2 (en) 1979-06-29 1979-06-29 Tuner tuning frequency automatic control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54083306A JPS6049374B2 (en) 1979-06-29 1979-06-29 Tuner tuning frequency automatic control device

Publications (2)

Publication Number Publication Date
JPS567517A true JPS567517A (en) 1981-01-26
JPS6049374B2 JPS6049374B2 (en) 1985-11-01

Family

ID=13798722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54083306A Expired JPS6049374B2 (en) 1979-06-29 1979-06-29 Tuner tuning frequency automatic control device

Country Status (1)

Country Link
JP (1) JPS6049374B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63290011A (en) * 1987-05-21 1988-11-28 Seiko Epson Corp High speed automatic channel selecting circuit for television
JPH01196912A (en) * 1988-02-01 1989-08-08 Maspro Denkoh Corp Satellite broadcast receiver

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51128214A (en) * 1975-04-30 1976-11-09 Toshiba Corp Receiver
JPS5255419A (en) * 1975-10-31 1977-05-06 Torio Kk Afc device for fm receiver
JPS5264201A (en) * 1975-11-22 1977-05-27 Sony Corp Station selection unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51128214A (en) * 1975-04-30 1976-11-09 Toshiba Corp Receiver
JPS5255419A (en) * 1975-10-31 1977-05-06 Torio Kk Afc device for fm receiver
JPS5264201A (en) * 1975-11-22 1977-05-27 Sony Corp Station selection unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63290011A (en) * 1987-05-21 1988-11-28 Seiko Epson Corp High speed automatic channel selecting circuit for television
JPH01196912A (en) * 1988-02-01 1989-08-08 Maspro Denkoh Corp Satellite broadcast receiver

Also Published As

Publication number Publication date
JPS6049374B2 (en) 1985-11-01

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