JPS5769925A - Receiver - Google Patents

Receiver

Info

Publication number
JPS5769925A
JPS5769925A JP14716780A JP14716780A JPS5769925A JP S5769925 A JPS5769925 A JP S5769925A JP 14716780 A JP14716780 A JP 14716780A JP 14716780 A JP14716780 A JP 14716780A JP S5769925 A JPS5769925 A JP S5769925A
Authority
JP
Japan
Prior art keywords
station
level
data area
reception
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.)
Granted
Application number
JP14716780A
Other languages
Japanese (ja)
Other versions
JPS637491B2 (en
Inventor
Yuuji Shiratani
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14716780A priority Critical patent/JPS5769925A/en
Priority to US06/285,440 priority patent/US4430753A/en
Priority to SE8104484A priority patent/SE454034B/en
Priority to DE19813129349 priority patent/DE3129349A1/en
Publication of JPS5769925A publication Critical patent/JPS5769925A/en
Publication of JPS637491B2 publication Critical patent/JPS637491B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/341—Muting when no signals or only weak signals are present
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0058—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means
    • H03J1/0066—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means with means for analysing the received signal strength

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To release a station at the strongest level from channel selection, by storing a plurality of stations to a channel selection key in a advance and automatically receiving the station at the strongest level relatively. CONSTITUTION:A signal is applied to a muting circuit 6 from a control section 11 and after the voice is interrupted, tuning data in a present station data area 14 and a check station data area 15 of a present data memory 13 are replaced, and reception is made with a tuning data existing at an original check station data area 15. The output of a level discrimination circuit 3 and that of an average circuit 4 are compared with each other at a comparison circuit 5, and the resulting output is applied to the section 11. As a result, if the check station is at lower level, the control is restored and the comparison with the next data area is made similarly. If the reception level of a check station is higher than the level of the present station, the section 11 keeps replacement to be switched to the reception, of the station.
JP14716780A 1980-07-24 1980-10-20 Receiver Granted JPS5769925A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP14716780A JPS5769925A (en) 1980-10-20 1980-10-20 Receiver
US06/285,440 US4430753A (en) 1980-07-24 1981-07-21 Radio receiver
SE8104484A SE454034B (en) 1980-07-24 1981-07-22 RADIORECEIVER
DE19813129349 DE3129349A1 (en) 1980-07-24 1981-07-24 BROADCAST RECEIVER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14716780A JPS5769925A (en) 1980-10-20 1980-10-20 Receiver

Publications (2)

Publication Number Publication Date
JPS5769925A true JPS5769925A (en) 1982-04-30
JPS637491B2 JPS637491B2 (en) 1988-02-17

Family

ID=15424094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14716780A Granted JPS5769925A (en) 1980-07-24 1980-10-20 Receiver

Country Status (1)

Country Link
JP (1) JPS5769925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132426A (en) * 1983-12-21 1985-07-15 Fujitsu Ten Ltd Tuning system of electronic tuning type car radio
WO1991008618A1 (en) * 1989-11-29 1991-06-13 Matsushita Electric Industrial Co., Ltd. Receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132426A (en) * 1983-12-21 1985-07-15 Fujitsu Ten Ltd Tuning system of electronic tuning type car radio
JPH026257B2 (en) * 1983-12-21 1990-02-08 Fujitsu Ten Ltd
WO1991008618A1 (en) * 1989-11-29 1991-06-13 Matsushita Electric Industrial Co., Ltd. Receiver

Also Published As

Publication number Publication date
JPS637491B2 (en) 1988-02-17

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