JPS52154304A - Frequency control unit - Google Patents

Frequency control unit

Info

Publication number
JPS52154304A
JPS52154304A JP7187176A JP7187176A JPS52154304A JP S52154304 A JPS52154304 A JP S52154304A JP 7187176 A JP7187176 A JP 7187176A JP 7187176 A JP7187176 A JP 7187176A JP S52154304 A JPS52154304 A JP S52154304A
Authority
JP
Japan
Prior art keywords
control unit
frequency control
achieve
control
local oscillator
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
JP7187176A
Other languages
Japanese (ja)
Other versions
JPS5730334B2 (en
Inventor
Masaaki Maekawa
Eiji Yamazaki
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP7187176A priority Critical patent/JPS52154304A/en
Publication of JPS52154304A publication Critical patent/JPS52154304A/en
Publication of JPS5730334B2 publication Critical patent/JPS5730334B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/181—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a numerical count result being used for locking the loop, the counter counting during fixed time intervals

Abstract

PURPOSE:To control the frequency drift of the local oscillator for a superheterodyne receiver, and thus to achieve the most appropriate tuning.
JP7187176A 1976-06-17 1976-06-17 Frequency control unit Granted JPS52154304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7187176A JPS52154304A (en) 1976-06-17 1976-06-17 Frequency control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7187176A JPS52154304A (en) 1976-06-17 1976-06-17 Frequency control unit

Publications (2)

Publication Number Publication Date
JPS52154304A true JPS52154304A (en) 1977-12-22
JPS5730334B2 JPS5730334B2 (en) 1982-06-28

Family

ID=13473000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7187176A Granted JPS52154304A (en) 1976-06-17 1976-06-17 Frequency control unit

Country Status (1)

Country Link
JP (1) JPS52154304A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5599837A (en) * 1979-01-24 1980-07-30 Toshiba Corp Automatic frequency control circuit
JPH07162273A (en) * 1993-09-21 1995-06-23 Lg Electron Inc Device and control method for selecting station in digital way

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4917178U (en) * 1972-05-16 1974-02-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4917178U (en) * 1972-05-16 1974-02-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5599837A (en) * 1979-01-24 1980-07-30 Toshiba Corp Automatic frequency control circuit
JPH07162273A (en) * 1993-09-21 1995-06-23 Lg Electron Inc Device and control method for selecting station in digital way

Also Published As

Publication number Publication date
JPS5730334B2 (en) 1982-06-28

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