AU530591B2 – Noise reduction circuit
– Google Patents
AU530591B2 – Noise reduction circuit
– Google Patents
Noise reduction circuit
Info
Publication number
AU530591B2
AU530591B2
AU45143/79A
AU4514379A
AU530591B2
AU 530591 B2
AU530591 B2
AU 530591B2
AU 45143/79 A
AU45143/79 A
AU 45143/79A
AU 4514379 A
AU4514379 A
AU 4514379A
AU 530591 B2
AU530591 B2
AU 530591B2
Authority
AU
Australia
Prior art keywords
noise reduction
reduction circuit
circuit
noise
reduction
Prior art date
1978-03-16
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.)
Ceased
Application number
AU45143/79A
Other versions
AU4514379A
(en
Inventor
Masanori Hamada
Sueji Kawaguchi
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.)
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co 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.)
1978-03-16
Filing date
1979-03-15
Publication date
1983-07-21
1979-03-15
Application filed by Clarion Co Ltd
filed
Critical
Clarion Co Ltd
1979-09-20
Publication of AU4514379A
publication
Critical
patent/AU4514379A/en
1983-07-21
Application granted
granted
Critical
1983-07-21
Publication of AU530591B2
publication
Critical
patent/AU530591B2/en
1995-03-15
Anticipated expiration
legal-status
Critical
Status
Ceased
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H03G5/00—Tone control or bandwidth control in amplifiers
H03G5/16—Automatic control
H03G5/18—Automatic control in untuned amplifiers
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
AU45143/79A
1978-03-16
1979-03-15
Noise reduction circuit
Ceased
AU530591B2
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
JP2925678
1978-03-16
JP2925678A
JPS54122017A
(en)
1978-03-16
1978-03-16
Noise reducing circuit
Publications (2)
Publication Number
Publication Date
AU4514379A
AU4514379A
(en)
1979-09-20
AU530591B2
true
AU530591B2
(en)
1983-07-21
Family
ID=12271187
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
AU45143/79A
Ceased
AU530591B2
(en)
1978-03-16
1979-03-15
Noise reduction circuit
Country Status (5)
Country
Link
US
(1)
US4244056A
(en)
JP
(1)
JPS54122017A
(en)
AU
(1)
AU530591B2
(en)
DE
(1)
DE2910242A1
(en)
GB
(1)
GB2016842B
(en)
Families Citing this family (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE3130341A1
(en)
*
1980-09-17
1982-06-16
Hitachi, Ltd., Tokyo
NOISE CONTROL AND WITH THIS PROVIDED FM RADIO RECEIVER
US4390749A
(en)
*
1981-04-13
1983-06-28
Superscope, Inc.
Noise control system for FM radio
JPS57188142A
(en)
*
1981-05-14
1982-11-19
Toshiba Corp
Reception circuit
IT1212744B
(en)
*
1983-05-19
1989-11-30
Sogs Ates Componenti Elettroni
CIRCUIT FOR THE ATTENUATION OF INTERFERENCE IN A RADIO RECEIVER BY USING AN ADJUSTABLE BANDWIDTH LOW-PASS FILTER.
JPS61202537A
(en)
*
1985-03-06
1986-09-08
Clarion Co Ltd
Stereo noise reduction circuit in fm stereo
US4761829A
(en)
*
1985-11-27
1988-08-02
Motorola Inc.
Adaptive signal strength and/or ambient noise driven audio shaping system
JPH03101528A
(en)
*
1989-09-14
1991-04-26
Clarion Co Ltd
Fm stereo receiver
JPH0528144U
(en)
*
1991-09-18
1993-04-09
パイオニア株式会社
Receiving machine
US5583891A
(en)
*
1994-10-31
1996-12-10
Motorola, Inc.
Noise attenuation circuit for amplitude modulated radio and method therefor
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5753699B2
(en)
*
1973-04-19
1982-11-15
US4037057A
(en)
*
1974-08-01
1977-07-19
Nippon Gakki Seizo Kabushiki Kaisha
Noise-cancelling apparatus for FM stereo receiver
US4087641A
(en)
*
1976-04-01
1978-05-02
Pioneer Electronic Corporation
Noise limiting circuit for FM stereo receiver
US4063039A
(en)
*
1976-06-16
1977-12-13
General Motors Corporation
Stereo noise reduction circuit
GB2005966A
(en)
*
1977-08-26
1979-04-25
Plessey Co Ltd
Improvements in or relating to suppressor circuits
1978
1978-03-16
JP
JP2925678A
patent/JPS54122017A/en
active
Pending
1979
1979-03-12
US
US06/019,840
patent/US4244056A/en
not_active
Expired – Lifetime
1979-03-14
GB
GB7909058A
patent/GB2016842B/en
not_active
Expired
1979-03-15
AU
AU45143/79A
patent/AU530591B2/en
not_active
Ceased
1979-03-15
DE
DE19792910242
patent/DE2910242A1/en
not_active
Ceased
Also Published As
Publication number
Publication date
US4244056A
(en)
1981-01-06
GB2016842A
(en)
1979-09-26
GB2016842B
(en)
1982-06-03
AU4514379A
(en)
1979-09-20
JPS54122017A
(en)
1979-09-21
DE2910242A1
(en)
1979-09-20
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None