JPS5752219A - Electronic tuner - Google Patents

Electronic tuner

Info

Publication number
JPS5752219A
JPS5752219A JP12687880A JP12687880A JPS5752219A JP S5752219 A JPS5752219 A JP S5752219A JP 12687880 A JP12687880 A JP 12687880A JP 12687880 A JP12687880 A JP 12687880A JP S5752219 A JPS5752219 A JP S5752219A
Authority
JP
Japan
Prior art keywords
band
voltage
receiving
saw
electronic tuner
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
JP12687880A
Other languages
Japanese (ja)
Other versions
JPS6234291B2 (en
Inventor
Seiji Hirata
Masaru Arai
Kaoru Umeda
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 JP12687880A priority Critical patent/JPS5752219A/en
Publication of JPS5752219A publication Critical patent/JPS5752219A/en
Publication of JPS6234291B2 publication Critical patent/JPS6234291B2/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

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To simplify a channel selecting operation, by detecting a sharp variation point of saw-tooth voltage, and changing over a receiving band automatically, in an electronic tuner for applying the saw-tooth voltage to a variable capacitor. CONSTITUTION:In a radio receiver which is capable of receiving both an AM band and an FM band, detection voltage which has detected a sharp variation point of channel selection voltage by a channel selection voltage generating circuit 10 is supplied to a trigger terminal T of a J-K flip-flop 12, so that a signal can be received by an FM chageover signal output terminal 16, and a receiving band can be changed over automatically.
JP12687880A 1980-09-12 1980-09-12 Electronic tuner Granted JPS5752219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12687880A JPS5752219A (en) 1980-09-12 1980-09-12 Electronic tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12687880A JPS5752219A (en) 1980-09-12 1980-09-12 Electronic tuner

Publications (2)

Publication Number Publication Date
JPS5752219A true JPS5752219A (en) 1982-03-27
JPS6234291B2 JPS6234291B2 (en) 1987-07-25

Family

ID=14946075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12687880A Granted JPS5752219A (en) 1980-09-12 1980-09-12 Electronic tuner

Country Status (1)

Country Link
JP (1) JPS5752219A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5764929U (en) * 1980-10-07 1982-04-17
JPH0397227U (en) * 1990-10-26 1991-10-07

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5764929U (en) * 1980-10-07 1982-04-17
JPH0397227U (en) * 1990-10-26 1991-10-07

Also Published As

Publication number Publication date
JPS6234291B2 (en) 1987-07-25

Similar Documents

Publication Publication Date Title
JPS5752219A (en) Electronic tuner
JPS5560328A (en) Tuning-point detection circuit of am radio receiver
JPS5668041A (en) Level measuring apparatus for satellite broadcast receiving antenna
JPS52102626A (en) Tv receiver
JPS5212512A (en) Afc circuit for fm receiver
JPS55153433A (en) Radio receiver
JPS5438701A (en) Automatic channel selector for electronic tuner
JPS5739628A (en) Receiver
JPS5666927A (en) Am/fm tuner
JPS5413206A (en) Fine tuning unit for pll type channel selection circuit
JPS56119506A (en) Noise eliminating circuit
JPS56117432A (en) Reception detecting circuit
JPS55134583A (en) Automatic preset channel selector of television receiver
JPS5768977A (en) Audio receiving circuit for television
JPS5723334A (en) Tuning circuit equipped with vco
JPS5428513A (en) Automatic tuning device
JPS5453901A (en) Channel selector
JPS54157417A (en) Channel selecting device containig automatic station searching function
JPS54147711A (en) Channel selection system
JPS57136817A (en) Control system of searching channel selection
JPS5467301A (en) Channel selector
JPS5550785A (en) Control signal discriminator in voice multiplex broadcasting receiver
JPS5658317A (en) Radio receiver
JPS5564409A (en) Agc circuit of receiver
JPS56122533A (en) Frequency modulation receiver