JPS5728424A - Automatic tuning system for receiver - Google Patents

Automatic tuning system for receiver

Info

Publication number
JPS5728424A
JPS5728424A JP10186880A JP10186880A JPS5728424A JP S5728424 A JPS5728424 A JP S5728424A JP 10186880 A JP10186880 A JP 10186880A JP 10186880 A JP10186880 A JP 10186880A JP S5728424 A JPS5728424 A JP S5728424A
Authority
JP
Japan
Prior art keywords
receiver
tuning
detuning frequency
frequency
differentiation
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
JP10186880A
Other languages
Japanese (ja)
Other versions
JPS627727B2 (en
Inventor
Hideya Nishioka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP10186880A priority Critical patent/JPS5728424A/en
Publication of JPS5728424A publication Critical patent/JPS5728424A/en
Publication of JPS627727B2 publication Critical patent/JPS627727B2/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
    • H03J7/16—Automatic frequency control where the frequency control is accomplished by mechanical means, e.g. by a motor

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To take the tuning of a receiver accurately, from the relation between detuning frequency and delay time given to a modulation signal by the receiver at the demodulation process. CONSTITUTION:A delay time given to a modulation signal inputted to a receiver at demodulation has a relation with a detuning frequency. That is, the time is proportional to the differentiation or integration value of the detuning frequency, and when the detuning frequency is zero, that is, the tuning is complete, the differentiation or integration value is zero. The value is positive or negative output depending whether the detuning frequency is higher or lower to the center frequency. Thus, this output signal is given to a motor 6 interlocked with the tuning circuit and the output signal of a signal detection section 5 is zeroed, allowing to make complete tuning.
JP10186880A 1980-07-26 1980-07-26 Automatic tuning system for receiver Granted JPS5728424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10186880A JPS5728424A (en) 1980-07-26 1980-07-26 Automatic tuning system for receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10186880A JPS5728424A (en) 1980-07-26 1980-07-26 Automatic tuning system for receiver

Publications (2)

Publication Number Publication Date
JPS5728424A true JPS5728424A (en) 1982-02-16
JPS627727B2 JPS627727B2 (en) 1987-02-19

Family

ID=14311961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10186880A Granted JPS5728424A (en) 1980-07-26 1980-07-26 Automatic tuning system for receiver

Country Status (1)

Country Link
JP (1) JPS5728424A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639084A (en) * 1984-01-10 1987-01-27 Canon Kabushiki Kaisha Lens barrel in which motor capable of selecting stepping drive or brushless drive is provided
US4682854A (en) * 1984-01-10 1987-07-28 Canon Kabushiki Kaisha Lens barrel incorporating a motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639084A (en) * 1984-01-10 1987-01-27 Canon Kabushiki Kaisha Lens barrel in which motor capable of selecting stepping drive or brushless drive is provided
US4682854A (en) * 1984-01-10 1987-07-28 Canon Kabushiki Kaisha Lens barrel incorporating a motor

Also Published As

Publication number Publication date
JPS627727B2 (en) 1987-02-19

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