JPS5776934A - Superheterodyne receiver - Google Patents

Superheterodyne receiver

Info

Publication number
JPS5776934A
JPS5776934A JP15272280A JP15272280A JPS5776934A JP S5776934 A JPS5776934 A JP S5776934A JP 15272280 A JP15272280 A JP 15272280A JP 15272280 A JP15272280 A JP 15272280A JP S5776934 A JPS5776934 A JP S5776934A
Authority
JP
Japan
Prior art keywords
output
controlled oscillator
voltage controlled
local oscillation
circuit
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
JP15272280A
Other languages
Japanese (ja)
Inventor
Toshio Abiko
Kuniharu Tatezuki
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP15272280A priority Critical patent/JPS5776934A/en
Publication of JPS5776934A publication Critical patent/JPS5776934A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Transceivers (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To decrease the power consumption, by taking a time detecting an output frequency from a voltage controlled oscillator introducing a local oscillation frequency signal as a power energizing period shorter in a predetermined pause period. CONSTITUTION:After a signal received at an antenna 1 is amplified at a high frequency amplifying circuit 2, it is mixed with a local oscillation frequency signal from a line 4 at a mixing circuit 3 and outputted from a speaker 8 via an intermediate frequency amplifying circuit 5 and a demodulation circuit 6. On the other hand, an output of a voltage controlled oscillator 9 supplying a local oscillation frequency signal to the mixing circuit 3 is given to a counter 14. The counter 14 is energized for a short power energizing period with a switch 15 for count down operation and given the output to a microcomputer 11. The voltage controlled oscillator 9 changes an output frequency with an output converting an analog output from the microcomputer 11 with an AD converter 13.
JP15272280A 1980-10-29 1980-10-29 Superheterodyne receiver Pending JPS5776934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15272280A JPS5776934A (en) 1980-10-29 1980-10-29 Superheterodyne receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15272280A JPS5776934A (en) 1980-10-29 1980-10-29 Superheterodyne receiver

Publications (1)

Publication Number Publication Date
JPS5776934A true JPS5776934A (en) 1982-05-14

Family

ID=15546714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15272280A Pending JPS5776934A (en) 1980-10-29 1980-10-29 Superheterodyne receiver

Country Status (1)

Country Link
JP (1) JPS5776934A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184323U (en) * 1985-05-08 1986-11-17
JPH07162273A (en) * 1993-09-21 1995-06-23 Lg Electron Inc Digital tuning device and tuning control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184323U (en) * 1985-05-08 1986-11-17
JPH07162273A (en) * 1993-09-21 1995-06-23 Lg Electron Inc Digital tuning device and tuning control method

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