FI67981C - Stoerningsdaempning foer ukv-mottagning - Google Patents

Stoerningsdaempning foer ukv-mottagning Download PDF

Info

Publication number
FI67981C
FI67981C FI781937A FI781937A FI67981C FI 67981 C FI67981 C FI 67981C FI 781937 A FI781937 A FI 781937A FI 781937 A FI781937 A FI 781937A FI 67981 C FI67981 C FI 67981C
Authority
FI
Finland
Prior art keywords
interference
signals
signal
signal transmission
filter
Prior art date
Application number
FI781937A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI781937A (fi
FI67981B (fi
Inventor
Eiji Tanaka
Original Assignee
Sharp Kk
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
Priority claimed from JP7254577A external-priority patent/JPS546702A/ja
Priority claimed from JP9925077A external-priority patent/JPS5824981B2/ja
Application filed by Sharp Kk filed Critical Sharp Kk
Publication of FI781937A publication Critical patent/FI781937A/fi
Application granted granted Critical
Publication of FI67981B publication Critical patent/FI67981B/fi
Publication of FI67981C publication Critical patent/FI67981C/fi

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
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals
    • H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
    • H04B1/1669—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal
    • 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
    • H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Stereo-Broadcasting Methods (AREA)
FI781937A 1977-06-17 1978-06-16 Stoerningsdaempning foer ukv-mottagning FI67981C (fi)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP7254577 1977-06-17
JP7254577A JPS546702A (en) 1977-06-17 1977-06-17 Noise component eliminating circuit in fm received and the like
JP9925077 1977-08-18
JP9925077A JPS5824981B2 (ja) 1977-08-18 1977-08-18 Ｆｍ受信機等におけるノイズ成分除去回路

Publications (3)

Publication Number Publication Date
FI781937A FI781937A (fi) 1978-12-18
FI67981B FI67981B (fi) 1985-02-28
FI67981C true FI67981C (fi) 1985-06-10

Family

ID=26413680

Family Applications (1)

Application Number Title Priority Date Filing Date
FI781937A FI67981C (fi) 1977-06-17 1978-06-16 Stoerningsdaempning foer ukv-mottagning

Country Status (10)

Country Link
US (1) US4191850A (de)
CH (1) CH631847A5 (de)
DE (1) DE2826524C3 (de)
DK (1) DK162552C (de)
FI (1) FI67981C (de)
FR (1) FR2394935A1 (de)
GB (1) GB2001229B (de)
NL (1) NL177725C (de)
NO (1) NO148870C (de)
SE (1) SE432683B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54122004A (en) * 1978-03-15 1979-09-21 Pioneer Electronic Corp Fm receiver
JPS5853805B2 (ja) * 1979-02-15 1983-12-01 日本ビクター株式会社 パイロット信号の除去装置
US4314377A (en) * 1979-04-27 1982-02-02 Sanyo Electric Co., Ltd. Noise removing apparatus
JPS57196631A (en) * 1981-05-28 1982-12-02 Sanyo Electric Co Ltd Detecting circuit for pulse noise
NL8203384A (nl) * 1982-08-31 1984-03-16 Philips Nv Fm-stereo-ontvanger.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662113A (en) * 1968-03-27 1972-05-09 Scott Inc H H Stereophonic demodulator apparatus and automatic monophonic-stereophonic switching circuit
DE2006397A1 (de) * 1969-02-18 1970-10-15 PGH Tonfunk, Ermsleben Patentwesen Ost-Berlin WPl37937 Schaltungsanordnung zur Abtrennung eines schmalen Frequenzbandes aus einem breiteren Frequenzband, insbesondere zur Abtrennung der Pilotfrequenz aus dem Multiplexsignal in Stereo-Decodern
NL145420B (nl) * 1969-10-25 1975-03-17 Philips Nv Schakeling voor het onderdrukken van storingen in een fm radio-ontvanger.
DE2038581A1 (de) * 1970-08-04 1972-02-10 Braun Ag Schaltungsanordnung zur Unterdrueckung von Stoersignalen
JPS5225681B1 (de) * 1970-12-11 1977-07-09
JPS5816653B2 (ja) * 1976-03-19 1983-04-01 三洋電機株式会社 Ｆｍ受信機のパルス性雑音除去装置
JPS52132712A (en) * 1976-04-30 1977-11-07 Clarion Co Ltd Noise deleting system

Also Published As

Publication number Publication date
SE432683B (sv) 1984-04-09
DK162552B (da) 1991-11-11
NL177725C (nl) 1985-11-01
NL177725B (nl) 1985-06-03
GB2001229B (en) 1982-01-27
SE7806825L (sv) 1978-12-18
FI781937A (fi) 1978-12-18
NL7806522A (nl) 1978-12-19
DE2826524B2 (de) 1980-10-02
NO148870B (no) 1983-09-19
FR2394935B1 (de) 1981-08-21
DK272978A (da) 1978-12-18
DE2826524A1 (de) 1979-01-11
US4191850A (en) 1980-03-04
GB2001229A (en) 1979-01-24
FI67981B (fi) 1985-02-28
NO782113L (no) 1978-12-19
DE2826524C3 (de) 1983-01-13
DK162552C (da) 1992-04-06
NO148870C (no) 1983-12-28
FR2394935A1 (fr) 1979-01-12
CH631847A5 (de) 1982-08-31

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: SHARP KABUSHIKI KAISHA