JPS5624824A - Automatic channel selector of tuner - Google Patents

Automatic channel selector of tuner

Info

Publication number
JPS5624824A
JPS5624824A JP9997879A JP9997879A JPS5624824A JP S5624824 A JPS5624824 A JP S5624824A JP 9997879 A JP9997879 A JP 9997879A JP 9997879 A JP9997879 A JP 9997879A JP S5624824 A JPS5624824 A JP S5624824A
Authority
JP
Japan
Prior art keywords
detecting circuit
output
circuit
frequency
lock
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.)
Pending
Application number
JP9997879A
Other languages
Japanese (ja)
Inventor
Hidenobu Yasujima
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 JP9997879A priority Critical patent/JPS5624824A/en
Publication of JPS5624824A publication Critical patent/JPS5624824A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
    • H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To secure channel selection by stopping scan or seek operation in accordance with AND as to the output of a lock detecting circuit that detects the lock state of PLL and that of an intermediate-frequency level detecting circuit. CONSTITUTION:In the automatic channel selector of the PLL frequency synthesizer tuner, lock detecting circuit 14 generates an output in the lock state of PLL circuit 4, namely, when the reference signal from oscillator 9 coincides with the output of programmable frequency divider 6 in terms of frequency and phase. In AND gate circuit 15, the output of lock detecting circuit 14 and that of intermediate-frequency level detecting circuit 13 are AND-ed and a stop signal for stopping scan or seek operation is supplied to control circuit 7.
JP9997879A 1979-08-06 1979-08-06 Automatic channel selector of tuner Pending JPS5624824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9997879A JPS5624824A (en) 1979-08-06 1979-08-06 Automatic channel selector of tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9997879A JPS5624824A (en) 1979-08-06 1979-08-06 Automatic channel selector of tuner

Publications (1)

Publication Number Publication Date
JPS5624824A true JPS5624824A (en) 1981-03-10

Family

ID=14261749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9997879A Pending JPS5624824A (en) 1979-08-06 1979-08-06 Automatic channel selector of tuner

Country Status (1)

Country Link
JP (1) JPS5624824A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60247321A (en) * 1984-05-23 1985-12-07 Pioneer Electronic Corp Tuning detector of radio receiver
JPS6454940A (en) * 1987-08-26 1989-03-02 Pioneer Electronic Corp Rds receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60247321A (en) * 1984-05-23 1985-12-07 Pioneer Electronic Corp Tuning detector of radio receiver
JPS6454940A (en) * 1987-08-26 1989-03-02 Pioneer Electronic Corp Rds receiver

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