JPS55633A - Receiving unit - Google Patents

Receiving unit

Info

Publication number
JPS55633A
JPS55633A JP7294378A JP7294378A JPS55633A JP S55633 A JPS55633 A JP S55633A JP 7294378 A JP7294378 A JP 7294378A JP 7294378 A JP7294378 A JP 7294378A JP S55633 A JPS55633 A JP S55633A
Authority
JP
Japan
Prior art keywords
phase
output
controlled
phase difference
detector
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
JP7294378A
Other languages
Japanese (ja)
Inventor
Kazutoshi Kusano
Kenji Furuta
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.)
Sansui Electric Co Ltd
Original Assignee
Sansui 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 Sansui Electric Co Ltd filed Critical Sansui Electric Co Ltd
Priority to JP7294378A priority Critical patent/JPS55633A/en
Publication of JPS55633A publication Critical patent/JPS55633A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
    • H03J3/32—Arrangements for ensuring tracking with variable capacitors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To secure an accurate automatic tuning by controlling the variable capacity element of the tuning circuit according to the detection output. CONSTITUTION:With setting of the reception frequency through operation of selector 13, voltage control transmitter 15 is controlled by phase lock loop 14. And the output is converted to the false signal to be applied to phase shifter 6 and phase detector 5. At the same time, the output of amplifier 2 is given to phase difference detector 5 via buffer amplifier 18, and the signals corresponding to the phase difference are applied to logic array 17 via low-pass filter 7. Thus, the application voltage is controlled for variable cap 16.
JP7294378A 1978-06-16 1978-06-16 Receiving unit Pending JPS55633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7294378A JPS55633A (en) 1978-06-16 1978-06-16 Receiving unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7294378A JPS55633A (en) 1978-06-16 1978-06-16 Receiving unit

Publications (1)

Publication Number Publication Date
JPS55633A true JPS55633A (en) 1980-01-07

Family

ID=13503956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7294378A Pending JPS55633A (en) 1978-06-16 1978-06-16 Receiving unit

Country Status (1)

Country Link
JP (1) JPS55633A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002236A1 (en) * 1982-11-20 1984-06-07 Thomson Brandt Gmbh Tuning unit for apparatus in the field of communications
WO1984003184A1 (en) * 1983-02-04 1984-08-16 Thomson Brandt Gmbh Tuning unit for communication system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526410A (en) * 1975-07-05 1977-01-18 Matsushita Electric Ind Co Ltd Tuner system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526410A (en) * 1975-07-05 1977-01-18 Matsushita Electric Ind Co Ltd Tuner system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002236A1 (en) * 1982-11-20 1984-06-07 Thomson Brandt Gmbh Tuning unit for apparatus in the field of communications
WO1984003184A1 (en) * 1983-02-04 1984-08-16 Thomson Brandt Gmbh Tuning unit for communication system

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