JPS56162527A - Controller of television receiver - Google Patents

Controller of television receiver

Info

Publication number
JPS56162527A
JPS56162527A JP6696780A JP6696780A JPS56162527A JP S56162527 A JPS56162527 A JP S56162527A JP 6696780 A JP6696780 A JP 6696780A JP 6696780 A JP6696780 A JP 6696780A JP S56162527 A JPS56162527 A JP S56162527A
Authority
JP
Japan
Prior art keywords
circuit
tuner
voltage
output
terminal
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
JP6696780A
Other languages
Japanese (ja)
Other versions
JPH0123002B2 (en
Inventor
Akinobu Masuko
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6696780A priority Critical patent/JPS56162527A/en
Publication of JPS56162527A publication Critical patent/JPS56162527A/en
Publication of JPH0123002B2 publication Critical patent/JPH0123002B2/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
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop

Landscapes

  • Television Receiver Circuits (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To increase the degree of freedom of fine adjustment of a frequency synthesizer reception system which uses a phase locked loop, by properly controlling the oscillation frequency of the voltage-controlled oscillating circuit of a tuner by a gate circuit for automatic tuning operation. CONSTITUTION:An automatic tuning AFT circuit 31 is supplied with the IF output of a tuner 11 to output a signal which corresponds to a shift in the IF signal. Then, a gate circuit 32 receives the output of the circuit 31 via one terminal and that of an LPF18 via the other terminal to select either one of the both, and the selected signal is applied to the oscillation frequency control terminal of a controlled oscillator in the tuner 11. A fine-adjustment signal generating circuit 20 performs pulse-width modulating operation and D/A converting operation and inputs an obtained DC voltage to the circuit by superposition. The output voltage of the circuit 31, when the circuit 32 is at a terminal 322 side, controls porperly the oscillation frequency of the voltage-controlled oscillator in the tuner 11.
JP6696780A 1980-05-20 1980-05-20 Controller of television receiver Granted JPS56162527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6696780A JPS56162527A (en) 1980-05-20 1980-05-20 Controller of television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6696780A JPS56162527A (en) 1980-05-20 1980-05-20 Controller of television receiver

Publications (2)

Publication Number Publication Date
JPS56162527A true JPS56162527A (en) 1981-12-14
JPH0123002B2 JPH0123002B2 (en) 1989-04-28

Family

ID=13331294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6696780A Granted JPS56162527A (en) 1980-05-20 1980-05-20 Controller of television receiver

Country Status (1)

Country Link
JP (1) JPS56162527A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5261904A (en) * 1975-11-14 1977-05-21 Rca Corp Tuner for television receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5261904A (en) * 1975-11-14 1977-05-21 Rca Corp Tuner for television receiver

Also Published As

Publication number Publication date
JPH0123002B2 (en) 1989-04-28

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