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JPS57106217A - Receiver - Google Patents

Receiver

Info

Publication number
JPS57106217A
JPS57106217A JP18320780A JP18320780A JPS57106217A JP S57106217 A JPS57106217 A JP S57106217A JP 18320780 A JP18320780 A JP 18320780A JP 18320780 A JP18320780 A JP 18320780A JP S57106217 A JPS57106217 A JP S57106217A
Authority
JP
Japan
Prior art keywords
frequency
broadcast
received
receiving
pll
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
JP18320780A
Other languages
Japanese (ja)
Other versions
JPS6324568B2 (en
Inventor
Norio Numata
Satoshi Yokoya
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP18320780A priority Critical patent/JPS57106217A/en
Publication of JPS57106217A publication Critical patent/JPS57106217A/en
Publication of JPS6324568B2 publication Critical patent/JPS6324568B2/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
    • H03J7/18—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
    • H03J7/285—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 the counter or frequency divider being used in a phase locked loop

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To tune a receiver to a correct frequency, by stopping scanning of the receiving frequency when a PLL is locked. CONSTITUTION:When an up switch Su is turned on, a scanning counter 31 is counted up to raise the receiving frequency step by step. If no broadcast is received, an F/F circuit 35 is not reset to continue up-count because of Q74=0, Q77=0, and Q75=0. When a broadcast is received in a frequency (fi), the F/F circuit 35 is reset because of Q74=1, Q77=1, and Q75=1, and the count of the counter 31 is stopped to set the receiving state. In this case, Q74 becomes 1 only when a broadcast is received to lock a PLL60 in a signal S55. Since the capture range of the PLL is generally about + or -100Hz, the error of the receiving frequency is within a range of + or -100Hz.
JP18320780A 1980-12-24 1980-12-24 Receiver Granted JPS57106217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18320780A JPS57106217A (en) 1980-12-24 1980-12-24 Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18320780A JPS57106217A (en) 1980-12-24 1980-12-24 Receiver

Publications (2)

Publication Number Publication Date
JPS57106217A true JPS57106217A (en) 1982-07-02
JPS6324568B2 JPS6324568B2 (en) 1988-05-21

Family

ID=16131646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18320780A Granted JPS57106217A (en) 1980-12-24 1980-12-24 Receiver

Country Status (1)

Country Link
JP (1) JPS57106217A (en)

Also Published As

Publication number Publication date
JPS6324568B2 (en) 1988-05-21

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