NL7803340A - Ruisonderdrukker voor fm-signalen. - Google Patents

Ruisonderdrukker voor fm-signalen.

Info

Publication number
NL7803340A
NL7803340A NL7803340A NL7803340A NL7803340A NL 7803340 A NL7803340 A NL 7803340A NL 7803340 A NL7803340 A NL 7803340A NL 7803340 A NL7803340 A NL 7803340A NL 7803340 A NL7803340 A NL 7803340A
Authority
NL
Netherlands
Prior art keywords
signals
noise canceler
canceler
noise
Prior art date
Application number
NL7803340A
Other languages
English (en)
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of NL7803340A publication Critical patent/NL7803340A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
    • H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
    • H04H40/72—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving for noise suppression
    • 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
    • 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
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • 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
    • H04B1/1653—Detection of the presence of stereo signals and pilot signal regeneration

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Noise Elimination (AREA)
NL7803340A 1977-03-30 1978-03-29 Ruisonderdrukker voor fm-signalen. NL7803340A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3457777A JPS53120306A (en) 1977-03-30 1977-03-30 Sound demodulation system

Publications (1)

Publication Number Publication Date
NL7803340A true NL7803340A (nl) 1978-10-03

Family

ID=12418168

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7803340A NL7803340A (nl) 1977-03-30 1978-03-29 Ruisonderdrukker voor fm-signalen.

Country Status (8)

Country Link
US (1) US4191851A (nl)
JP (1) JPS53120306A (nl)
DE (1) DE2813718A1 (nl)
FR (1) FR2386205A1 (nl)
GB (1) GB1561555A (nl)
HK (1) HK57681A (nl)
MY (1) MY8200174A (nl)
NL (1) NL7803340A (nl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3130341A1 (de) * 1980-09-17 1982-06-16 Hitachi, Ltd., Tokyo Rauschsperre und mit dieser versehener fm-funkempfaenger
JP2004187074A (ja) * 2002-12-04 2004-07-02 Pioneer Electronic Corp ノイズ除去装置

Family Cites Families (5)

* 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
NL145420B (nl) * 1969-10-25 1975-03-17 Philips Nv Schakeling voor het onderdrukken van storingen in een fm radio-ontvanger.
US3634626A (en) * 1970-04-06 1972-01-11 Sylvania Electric Prod Noise-operated automatic stereo to monaural switch for fm receivers
US3999132A (en) * 1975-10-31 1976-12-21 Motorola, Inc. Stereo inhibit circuit
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

Also Published As

Publication number Publication date
US4191851A (en) 1980-03-04
FR2386205A1 (fr) 1978-10-27
FR2386205B1 (nl) 1981-10-30
MY8200174A (en) 1982-12-31
JPS53120306A (en) 1978-10-20
HK57681A (en) 1981-12-04
GB1561555A (en) 1980-02-20
DE2813718A1 (de) 1978-10-19

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Legal Events

Date Code Title Description
BB A search report has been drawn up
A85 Still pending on 85-01-01
BV The patent application has lapsed