IT1135216B - Circuito di riduzione del rumore - Google Patents

Circuito di riduzione del rumore

Info

Publication number: IT1135216B
Authority: IT; Italy
Prior art keywords: noise reduction; reduction circuit; circuit; noise; reduction
Prior art date: 1980-01-30

Application number

IT19388/81A

Other languages

English (en)

Other versions

IT8119388A0 (it

Inventor

Akagiri Kenzo

Original Assignee

Sony 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.)

1980-01-30

Filing date

1981-01-28

Publication date

1986-08-20

1981-01-28 Application filed by Sony Corp filed Critical Sony Corp

1981-01-28 Publication of IT8119388A0 publication Critical patent/IT8119388A0/it

1986-08-20 Application granted granted Critical

1986-08-20 Publication of IT1135216B publication Critical patent/IT1135216B/it

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
- 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

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Noise Elimination (AREA)

IT19388/81A 1980-01-30 1981-01-28 Circuito di riduzione del rumore IT1135216B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP985780A JPS56107648A (en)	1980-01-30	1980-01-30	Noise reduction circuit

Publications (2)

Publication Number	Publication Date
IT8119388A0 IT8119388A0 (it)	1981-01-28
IT1135216B true IT1135216B (it)	1986-08-20

Family

ID=11731797

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT19388/81A IT1135216B (it)	1980-01-30	1981-01-28	Circuito di riduzione del rumore

Country Status (11)

Country	Link
JP (1)	JPS56107648A (it)
AT (1)	AT381194B (it)
AU (1)	AU539233B2 (it)
BE (1)	BE887278A (it)
CA (1)	CA1158172A (it)
CH (1)	CH657485A5 (it)
DE (1)	DE3103237C2 (it)
FR (1)	FR2474736A1 (it)
GB (1)	GB2068197B (it)
IT (1)	IT1135216B (it)
NL (1)	NL8100412A (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4490691A (en) *	1980-06-30	1984-12-25	Dolby Ray Milton	Compressor-expander circuits and, circuit arrangements for modifying dynamic range, for suppressing mid-frequency modulation effects and for reducing media overload
JPH0775103B2 (ja) *	1987-05-13	1995-08-09	三菱電機株式会社	ノイズリダクシヨン回路
US5424881A (en)	1993-02-01	1995-06-13	Cirrus Logic, Inc.	Synchronous read channel

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3846719A (en) *	1973-09-13	1974-11-05	Dolby Laboratories Inc	Noise reduction systems
US3678416A (en) *	1971-07-26	1972-07-18	Richard S Burwen	Dynamic noise filter having means for varying cutoff point
US3789143A (en) *	1971-03-29	1974-01-29	D Blackmer	Compander with control signal logarithmically related to the instantaneous rms value of the input signal
FI57502C (fi) *	1971-04-06	1980-08-11	Victor Company Of Japan	Kompressions- och expansionssystem
US3732371A (en) *	1971-05-10	1973-05-08	Richard S Burwen	Wide dynamic range noise masking compandor
GB1438711A (en) *	1973-01-23	1976-06-09	Dolby Laboratories Inc	Calibration oscillators for noise reduction systems
GB1473833A (en) *	1973-05-17	1977-05-18	Dolby Laboratories Inc	Circuit for the dynamic range of a signal
US3902131A (en) *	1974-09-06	1975-08-26	Quadracast Systems	Tandem audio dynamic range expander
JPS52142409A (en) *	1976-05-21	1977-11-28	Toshiba Corp	Noise reduction system
JPS53121506A (en) *	1977-03-31	1978-10-24	Pioneer Electronic Corp	Signal compressing and expanding device
JPS5439516A (en) *	1977-09-02	1979-03-27	Sanyo Electric Co Ltd	Noise reduction unit

1980
- 1980-01-30 JP JP985780A patent/JPS56107648A/ja active Granted
1981
- 1981-01-16 CA CA000368692A patent/CA1158172A/en not_active Expired
- 1981-01-20 AU AU66358/81A patent/AU539233B2/en not_active Ceased
- 1981-01-22 GB GB8101908A patent/GB2068197B/en not_active Expired
- 1981-01-27 FR FR8101527A patent/FR2474736A1/fr active Granted
- 1981-01-28 NL NL8100412A patent/NL8100412A/nl not_active Application Discontinuation
- 1981-01-28 IT IT19388/81A patent/IT1135216B/it active
- 1981-01-28 AT AT0035781A patent/AT381194B/de not_active IP Right Cessation
- 1981-01-29 BE BE2/58985A patent/BE887278A/fr not_active IP Right Cessation
- 1981-01-29 CH CH579/81A patent/CH657485A5/de not_active IP Right Cessation
- 1981-01-30 DE DE3103237A patent/DE3103237C2/de not_active Expired - Fee Related

Also Published As

Publication number	Publication date
AT381194B (de)	1986-09-10
DE3103237C2 (de)	1993-10-14
JPS6232850B2 (it)	1987-07-17
GB2068197A (en)	1981-08-05
NL8100412A (nl)	1981-09-01
IT8119388A0 (it)	1981-01-28
CH657485A5 (de)	1986-08-29
DE3103237A1 (de)	1981-12-03
AU6635881A (en)	1981-08-06
CA1158172A (en)	1983-12-06
FR2474736A1 (fr)	1981-07-31
BE887278A (fr)	1981-05-14
AU539233B2 (en)	1984-09-20
GB2068197B (en)	1984-08-08
FR2474736B1 (it)	1984-11-23
JPS56107648A (en)	1981-08-26
ATA35781A (de)	1986-01-15

Publication	Publication Date	Title
FI811744L (fi)	1981-12-07	Kopplingsanordning
IT8323550A0 (it)	1983-10-31	Circuito di interfaccia.
FR2491188B1 (fr)	1986-05-23	Silencieux
FI833220A (fi)	1984-05-23	Foerfarande foer att uppnao en tvao- eller tredimensionell bild av kemiska oevergaongar.
IT1171766B (it)	1987-06-10	Catetere
FR2491322B1 (fr)	1986-08-29	Lave-vaisselle
BR8002141A (pt)	1980-11-25	Circuito bloqueador de ruidos
IT8224720A0 (it)	1982-12-13	Circuito demultiplatore.
IT1138559B (it)	1986-09-17	Circuito di riduzione del rumore
BR8205190A (pt)	1983-08-16	Circuito sincronizador-supervisor
IT1138883B (it)	1986-09-17	Circuito di controllo del guadagno
IT1206117B (it)	1989-04-14	Circuito demultiplatore.
FR2481500B1 (fr)	1986-08-22	Circuit de reduction de bruit
FR2483516B1 (fr)	1986-12-12	Silencieux
FI811873L (fi)	1981-12-28	Kopplingsanordning
IT1169233B (it)	1987-05-27	Circuito amplificatore
IT1135216B (it)	1986-08-20	Circuito di riduzione del rumore
AT388492B (de)	1989-06-26	Schublade
IT1167463B (it)	1987-05-13	Dializzatore assorbente di combinazione
BR8104634A (pt)	1982-04-06	Arranjo de circuito
IT1168612B (it)	1987-05-20	Circuito generatore di impulsi
IT1139998B (it)	1986-09-24	Condensatore elettrico
BR8106570A (pt)	1982-06-29	Disposicao de circuito
BR8104670A (pt)	1982-04-06	Disposicao de circuito
ATA634080A (de)	1982-05-15	Spuelapparat

Legal Events

Date	Code	Title	Description
1999-10-27	TA	Fee payment date (situation as of event date), data collected since 19931001	Effective date: 19940129