SE8200544L - RADIORECEIVER - Google Patents

RADIORECEIVER

Info

Publication number
SE8200544L
SE8200544L SE8200544A SE8200544A SE8200544L SE 8200544 L SE8200544 L SE 8200544L SE 8200544 A SE8200544 A SE 8200544A SE 8200544 A SE8200544 A SE 8200544A SE 8200544 L SE8200544 L SE 8200544L
Authority
SE
Sweden
Prior art keywords
circuit
output
tuning
level
signal
Prior art date
Application number
SE8200544A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE454037B (en
Inventor
R Tomohiro
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
Publication of SE8200544L publication Critical patent/SE8200544L/en
Publication of SE454037B publication Critical patent/SE454037B/en

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)
  • Noise Elimination (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To receive a station which is satisfactory in not only a receiving level but also a receiving quality in case of being switched to other station, by controlling a tuning operation of a tuner in accordance with a distortion level of an output of the tuner, and a tuning command for commanding the tuning of the tuner in accordance with a receiving level, in a receiver provided with a tuning control means. CONSTITUTION:An output of a tuner 2 is provided to a distortion level detecting circuit 8 and a receiving level detecting circuit 6. An output of the circuit 8 inputs a signal of a high level to one terminal of an AND circuit 10 when a distortion level of the output has become a prescribed value or below and also this state has been continued for a prescribed period. On the other hand, when the circuit 6 becomes a prescribed level which has been set in advance, a tuning command signal is applied to a control part 7. When the tuning command signal is applied, the control part 7 makes derivation of this signal hold, and inputs a signal showing its holding state to the other terminal of the circuit 10. An output of the circuit 10 is operated as a signal for releasing said holding state in the control part 7.
SE8200544A 1981-02-03 1982-02-01 RADIORECEIVER SE454037B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1540781A JPS57129017A (en) 1981-02-03 1981-02-03 Receiver

Publications (2)

Publication Number Publication Date
SE8200544L true SE8200544L (en) 1982-08-04
SE454037B SE454037B (en) 1988-03-21

Family

ID=11887871

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8200544A SE454037B (en) 1981-02-03 1982-02-01 RADIORECEIVER

Country Status (3)

Country Link
JP (1) JPS57129017A (en)
DE (1) DE3202607A1 (en)
SE (1) SE454037B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3718845A1 (en) * 1987-06-05 1988-12-15 Thomson Brandt Gmbh Receiving set for broadcast signals with an additional information contained therein (RDS)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247543A (en) * 1975-10-14 1977-04-15 Nippon Steel Corp Device for setting diaphragm of shaped steel
JPS6043695B2 (en) * 1978-10-02 1985-09-30 株式会社ケンウッド FM receiver
JPS56146U (en) * 1979-06-15 1981-01-06
NL8000509A (en) * 1980-01-28 1981-08-17 Philips Nv RECEIVER WITH A TRANSMITTER SWITCH.
NL8003087A (en) * 1980-05-29 1982-01-04 Philips Nv RECEIVER WITH A TRANSMITTER SWITCH.
DE3034155C2 (en) * 1980-09-11 1985-10-10 Becker Autoradiowerk Gmbh, 7516 Karlsbad Method and circuit arrangement for tuning a radio receiver

Also Published As

Publication number Publication date
JPS57129017A (en) 1982-08-10
DE3202607A1 (en) 1982-09-02
SE454037B (en) 1988-03-21
JPH0338780B2 (en) 1991-06-11

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