AU7239481A - Compander - Google Patents

Compander

Info

Publication number: AU7239481A
Authority: AU; Australia
Prior art keywords: compander
Prior art date: 1980-06-30
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.): Granted

Application number

AU72394/81A

Other versions

AU545125B2 (en

Inventor

Ray Milton Dolby

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.)

Individual

Original Assignee

Individual

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.)

1980-06-30

Filing date

1981-06-30

Publication date

1982-01-07

1981-06-30 Application filed by Individual filed Critical Individual

1982-01-07 Publication of AU7239481A publication Critical patent/AU7239481A/en

1985-07-04 Application granted granted Critical

1985-07-04 Publication of AU545125B2 publication Critical patent/AU545125B2/en

2001-06-30 Anticipated expiration legal-status Critical

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- 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
- H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
- H03G9/18—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for tone control and volume expansion or compression

AU72394/81A 1980-06-30 1981-06-30 Compander Expired AU545125B2 (en)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date
US16395080A	1980-06-30	1980-06-30
US163950		1980-06-30
US18077180A	1980-08-22	1980-08-22
US180771		2002-06-26

Publications (2)

Publication Number	Publication Date
AU7239481A true AU7239481A (en)	1982-01-07
AU545125B2 AU545125B2 (en)	1985-07-04

Family

ID=26860115

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
AU72394/81A Expired AU545125B2 (en)	1980-06-30	1981-06-30	Compander
AU72393/81A Expired AU544888B2 (en)	1980-06-30	1981-06-30	Compander
AU72365/81A Expired AU546641B2 (en)	1980-06-30	1981-06-30	Compander

Family Applications After (2)

Application Number	Title	Priority Date	Filing Date
AU72393/81A Expired AU544888B2 (en)	1980-06-30	1981-06-30	Compander
AU72365/81A Expired AU546641B2 (en)	1980-06-30	1981-06-30	Compander

Country Status (17)

Country	Link
KR (4)	KR880000106B1 (en)
AT (3)	AT372796B (en)
AU (3)	AU545125B2 (en)
BR (3)	BR8104156A (en)
CH (3)	CH660653A5 (en)
DE (3)	DE3125788A1 (en)
DK (3)	DK168806B1 (en)
ES (3)	ES503497A0 (en)
FI (3)	FI76456C (en)
GB (3)	GB2079114B (en)
HK (3)	HK28285A (en)
IT (3)	IT1137985B (en)
MY (3)	MY8501148A (en)
NL (3)	NL190214C (en)
NO (3)	NO157399C (en)
SE (3)	SE450985B (en)
SG (3)	SG4285G (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4736433A (en) *	1985-06-17	1988-04-05	Dolby Ray Milton	Circuit arrangements for modifying dynamic range using action substitution and superposition techniques
US4815068A (en) *	1987-08-07	1989-03-21	Dolby Ray Milton	Audio encoder for use with more than one decoder each having different characteristics
US5793797A (en) *	1995-05-09	1998-08-11	Unisys Corporation	Data transmisson system with a low peak-to-average power ratio based on distorting small amplitude signals
US5651028A (en) *	1995-05-09	1997-07-22	Unisys Corporation	Data transmission system with a low peak-to-average power ratio based on distorting frequently occuring signals
DE10011193B4 (en) *	2000-03-08	2004-02-05	Sennheiser Electronic Gmbh & Co. Kg	Compander system with a compressor circuit and an expander circuit

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US28426A (en) *		1860-05-22		Shortening tires
US2558002A (en) *	1939-10-24	1951-06-26	Int Standard Electric Corp	Volume compression system
US3022473A (en) *	1959-08-18	1962-02-20	Bell Telephone Labor Inc	Signal recovery circuits
GB1253031A (en) *	1968-01-10	1971-11-10
US3903485A (en) *	1968-01-10	1975-09-02	Ray Milton Dolby	Compressors, expanders and noise reduction systems
US3846719A (en) *	1973-09-13	1974-11-05	Dolby Laboratories Inc	Noise reduction systems
USRE28426E (en) *	1968-11-01	1975-05-20		Signal compressors and expanders
US3757254A (en) *	1970-06-05	1973-09-04	Victor Co Ltd	N system noise reduction system and apparatus using a compression and expansio
GB1390341A (en) *	1971-03-12	1975-04-09	Dolby Laboratories Inc	Signal compressors and expanders
FI57502C (en) *	1971-04-06	1980-08-11	Victor Company Of Japan	KOMPRESSIONS- OCH EXPANSIONSSYSTEM
US3875537A (en) *	1972-05-02	1975-04-01	Dolby Laboratories Inc	Circuits for modifying the dynamic range of an input signal
GB1432763A (en) *	1972-05-02	1976-04-22	Dolby Laboratories Inc	Compressors expanders and noise reduction systems
US3934190A (en) *	1972-09-15	1976-01-20	Dolby Laboratories, Inc.	Signal compressors and expanders
CA1000617A (en) *	1973-05-17	1976-11-30	Ray M. Dolby	Compressors, expanders and noise reduction systems
US3971405A (en) *	1974-07-15	1976-07-27	Parker-Hannifin Corporation	Pressure controlled hydrant valve coupler
US3930208A (en) *	1974-08-29	1975-12-30	Northern Electric Co	A-C signal processing circuits for compandors
US3902131A (en) *	1974-09-06	1975-08-26	Quadracast Systems	Tandem audio dynamic range expander
JPS51127608A (en) *	1975-04-30	1976-11-06	Victor Co Of Japan Ltd	Signal transmitting unit
US4061874A (en) *	1976-06-03	1977-12-06	Fricke J P	System for reproducing sound information
DE2803751C2 (en) *	1978-01-28	1982-06-09	Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt	Circuit for automatic dynamic compression or expansion
JPS5552971A (en) *	1978-10-16	1980-04-17	Mitsubishi Electric Corp	Simulator for radar indicator

1981
- 1981-06-26 DK DK282981A patent/DK168806B1/en not_active IP Right Cessation
- 1981-06-26 DK DK282581A patent/DK156356C/en not_active IP Right Cessation
- 1981-06-26 DK DK282881A patent/DK172325B1/en not_active IP Right Cessation
- 1981-06-29 GB GB8119974A patent/GB2079114B/en not_active Expired
- 1981-06-29 SE SE8104062A patent/SE450985B/en not_active IP Right Cessation
- 1981-06-29 SE SE8104061A patent/SE447524B/en not_active IP Right Cessation
- 1981-06-29 GB GB8119973A patent/GB2079113B/en not_active Expired
- 1981-06-29 FI FI812026A patent/FI76456C/en not_active IP Right Cessation
- 1981-06-29 ES ES503497A patent/ES503497A0/en active Granted
- 1981-06-29 NL NLAANVRAGE8103122,A patent/NL190214C/en not_active IP Right Cessation
- 1981-06-29 SE SE8104063A patent/SE447525B/en not_active IP Right Cessation
- 1981-06-29 FI FI812024A patent/FI74368C/en not_active IP Right Cessation
- 1981-06-29 NL NL8103123A patent/NL192652C/en not_active IP Right Cessation
- 1981-06-29 ES ES503493A patent/ES503493A0/en active Granted
- 1981-06-29 NO NO812217A patent/NO157399C/en not_active IP Right Cessation
- 1981-06-29 FI FI812025A patent/FI79428C/en not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103124,A patent/NL189988C/en not_active IP Right Cessation
- 1981-06-29 NO NO812218A patent/NO157400C/en not_active IP Right Cessation
- 1981-06-29 NO NO812216A patent/NO157398C/en not_active IP Right Cessation
- 1981-06-29 GB GB8119972A patent/GB2079112B/en not_active Expired
- 1981-06-29 ES ES503496A patent/ES8204255A1/en not_active Expired
- 1981-06-30 CH CH4294/81A patent/CH660653A5/en not_active IP Right Cessation
- 1981-06-30 CH CH4293/81A patent/CH654703A5/en not_active IP Right Cessation
- 1981-06-30 DE DE19813125788 patent/DE3125788A1/en active Granted
- 1981-06-30 KR KR1019810002351A patent/KR880000106B1/en active
- 1981-06-30 AT AT0291581A patent/AT372796B/en not_active IP Right Cessation
- 1981-06-30 BR BR8104156A patent/BR8104156A/en not_active IP Right Cessation
- 1981-06-30 AU AU72394/81A patent/AU545125B2/en not_active Expired
- 1981-06-30 IT IT22650/81A patent/IT1137985B/en active
- 1981-06-30 AU AU72393/81A patent/AU544888B2/en not_active Expired
- 1981-06-30 DE DE19813125790 patent/DE3125790A1/en active Granted
- 1981-06-30 KR KR1019810002352A patent/KR840002491B1/en active
- 1981-06-30 AT AT0291481A patent/AT386304B/en not_active IP Right Cessation
- 1981-06-30 KR KR1019810002350A patent/KR880000105B1/en active
- 1981-06-30 BR BR8104157A patent/BR8104157A/en not_active IP Right Cessation
- 1981-06-30 AT AT0291681A patent/AT386911B/en not_active IP Right Cessation
- 1981-06-30 AU AU72365/81A patent/AU546641B2/en not_active Expired
- 1981-06-30 BR BR8104158A patent/BR8104158A/en not_active IP Right Cessation
- 1981-06-30 IT IT22652/81A patent/IT1137987B/en active
- 1981-06-30 CH CH4292/81A patent/CH662684A5/en not_active IP Right Cessation
- 1981-06-30 DE DE3125789A patent/DE3125789C2/en not_active Expired
- 1981-06-30 IT IT22651/81A patent/IT1137986B/en active
1984
- 1984-09-19 KR KR1019840005735A patent/KR840002492B1/en not_active IP Right Cessation
1985
- 1985-01-16 SG SG42/85A patent/SG4285G/en unknown
- 1985-01-16 SG SG43/85A patent/SG4385G/en unknown
- 1985-01-16 SG SG45/85A patent/SG4585G/en unknown
- 1985-04-04 HK HK282/85A patent/HK28285A/en not_active IP Right Cessation
- 1985-04-04 HK HK283/85A patent/HK28385A/en not_active IP Right Cessation
- 1985-04-04 HK HK284/85A patent/HK28485A/en not_active IP Right Cessation
- 1985-12-30 MY MY1148/85A patent/MY8501148A/en unknown
- 1985-12-30 MY MY1149/85A patent/MY8501149A/en unknown
- 1985-12-30 MY MY1147/85A patent/MY8501147A/en unknown

Also Published As

Publication number	Publication date
ATA291481A (en)	1987-12-15
GB2079112A (en)	1982-01-13
IT8122651A0 (en)	1981-06-30
DK282581A (en)	1981-12-31
NL192652B (en)	1997-07-01
NL189988C (en)	1993-09-16
BR8104158A (en)	1982-03-16
NO157399C (en)	1988-03-09
FI812025L (en)	1981-12-31
SG4285G (en)	1985-06-14
FI79428C (en)	1989-12-11
DK172325B1 (en)	1998-03-16
CH660653A5 (en)	1987-05-15
DE3125790C2 (en)	1992-11-12
SE450985B (en)	1987-09-07
DE3125789A1 (en)	1982-05-19
AU7236581A (en)	1982-01-07
ATA291581A (en)	1983-03-15
AT386304B (en)	1988-08-10
NL8103122A (en)	1982-01-18
NL8103124A (en)	1982-01-18
NO812218L (en)	1982-01-04
GB2079113A (en)	1982-01-13
NO157398C (en)	1988-03-09
SE447525B (en)	1986-11-17
BR8104157A (en)	1982-03-16
AU545125B2 (en)	1985-07-04
NO157400B (en)	1987-11-30
ES8300233A1 (en)	1982-10-01
FI74368C (en)	1988-01-11
ES503496A0 (en)	1982-04-16
IT1137985B (en)	1986-09-10
GB2079114B (en)	1984-10-03
DK156356B (en)	1989-08-07
ES8301084A1 (en)	1982-11-01
HK28385A (en)	1985-04-12
NO157398B (en)	1987-11-30
NL8103123A (en)	1982-01-18
DE3125788A1 (en)	1982-05-13
SE447524B (en)	1986-11-17
FI76456B (en)	1988-06-30
SE8104062L (en)	1981-12-31
IT8122650A0 (en)	1981-06-30
GB2079113B (en)	1984-10-03
HK28485A (en)	1985-04-12
DK156356C (en)	1989-12-27
NL192652C (en)	1997-11-04
AU544888B2 (en)	1985-06-20
NO157399B (en)	1987-11-30
MY8501148A (en)	1985-12-31
CH654703A5 (en)	1986-02-28
GB2079112B (en)	1984-10-03
ES8204255A1 (en)	1982-04-16
SG4585G (en)	1985-06-14
KR880000105B1 (en)	1988-02-23
KR840002492B1 (en)	1984-12-31
KR830006992A (en)	1983-10-12
AT372796B (en)	1983-11-10
AT386911B (en)	1988-11-10
NL190214B (en)	1993-07-01
FI76456C (en)	1988-10-10
BR8104156A (en)	1982-03-16
IT8122652A0 (en)	1981-06-30
SE8104063L (en)	1981-12-31
MY8501149A (en)	1985-12-31
DK282981A (en)	1981-12-31
NO812217L (en)	1982-01-04
HK28285A (en)	1985-04-12
FI74368B (en)	1987-09-30
SG4385G (en)	1985-06-14
AU7239381A (en)	1982-01-07
ATA291681A (en)	1988-03-15
SE8104061L (en)	1981-12-31
GB2079114A (en)	1982-01-13
DE3125789C2 (en)	1984-01-12
FI79428B (en)	1989-08-31
FI812026L (en)	1981-12-31
KR840002491B1 (en)	1984-12-31
DE3125790A1 (en)	1982-05-13
CH662684A5 (en)	1987-10-15
IT1137987B (en)	1986-09-10
NL190214C (en)	1993-12-01
DK282881A (en)	1981-12-31
NO157400C (en)	1988-03-09
FI812024L (en)	1981-12-31
MY8501147A (en)	1985-12-31
AU546641B2 (en)	1985-09-12
ES503493A0 (en)	1982-10-01
ES503497A0 (en)	1982-11-01
NO812216L (en)	1982-01-04
NL189988B (en)	1993-04-16
KR830006993A (en)	1983-10-12
DK168806B1 (en)	1994-06-13
KR880000106B1 (en)	1988-02-23
DE3125788C2 (en)	1992-06-11
IT1137986B (en)	1986-09-10

Publication	Publication Date	Title
AU550089B2 (en)	1986-03-06	Carbon-buron bonds-reduction
AU544099B2 (en)	1985-05-16	Triazolylpentenols
AU537992B2 (en)	1984-07-26	Polusilanes
AU545667B2 (en)	1985-07-25	Diamino-pyridines
AU538782B2 (en)	1984-08-30	Triazoloquinoxalin-4-ones
AU539188B2 (en)	1984-09-13	Skin-packaging
AU3206284A (en)	1984-11-29	2-guanidno-4-heteroarylthiazoles
AU545397B2 (en)	1985-07-11	Cloches
AU541912B2 (en)	1985-01-31	2-nitroimidazoles
AU527275B2 (en)	1983-02-24	Auto-diaphragm hemodialyser
AU537824B2 (en)	1984-07-12	Oxygensensor
AU540787B2 (en)	1984-12-06	4-indenyl-alkyl-piperidenes
AU545802B2 (en)	1985-08-01	Compander
AU545788B2 (en)	1985-08-01	Compander
AU549078B2 (en)	1986-01-16	N-alkyl-4-quinolones
AU549968B2 (en)	1986-02-20	Glycosylglucans
AU543520B2 (en)	1985-04-26	Kijanimicin
AU545125B2 (en)	1985-07-04	Compander
AU537073B2 (en)	1984-06-07	Haloacetanilide
AU534814B2 (en)	1984-02-16	Showstand
AU517843B2 (en)	1981-08-27	Guanylamidines
AU538427B2 (en)	1984-08-16	Dichlorobenzoyl-3-phenylpyrazolines
AU541732B2 (en)	1985-01-17	11a-amino-androstanes
AU548141B2 (en)	1985-11-28	1-phenyl-2-triazolyl-pent-gen-3-ols
AU540683B2 (en)	1984-11-29	Photocomposer

Legal Events

Date	Code	Title	Description
2002-01-31	MK14	Patent ceased section 143(a) (annual fees not paid) or expired