AT386304B - SIGNAL COMPRESSOR AND EXPANDER - Google Patents

SIGNAL COMPRESSOR AND EXPANDER

Info

Publication number: AT386304B
Authority: AT; Austria
Prior art keywords: expander; signal compressor; compressor; signal
Prior art date: 1980-06-30

Application number

AT0291481A

Other languages

German (de)

Other versions

ATA291481A (en

Original Assignee

Dolby Ray Milton

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

1988-08-10

1981-06-30 Application filed by Dolby Ray Milton filed Critical Dolby Ray Milton

1987-12-15 Publication of ATA291481A publication Critical patent/ATA291481A/en

1988-08-10 Application granted granted Critical

1988-08-10 Publication of AT386304B publication Critical patent/AT386304B/en

Links

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

AT0291481A 1980-06-30 1981-06-30 SIGNAL COMPRESSOR AND EXPANDER AT386304B (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US16395080A	1980-06-30	1980-06-30
US18077180A	1980-08-22	1980-08-22

Publications (2)

Publication Number	Publication Date
ATA291481A ATA291481A (en)	1987-12-15
AT386304B true AT386304B (en)	1988-08-10

Family

ID=26860115

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
AT0291681A AT386911B (en)	1980-06-30	1981-06-30	CIRCUIT ARRANGEMENT FOR MODIFYING THE DYNAMIC RANGE
AT0291581A AT372796B (en)	1980-06-30	1981-06-30	CIRCUIT ARRANGEMENT FOR CHANGING THE DYNAMIC RANGE OF SIGNALS
AT0291481A AT386304B (en)	1980-06-30	1981-06-30	SIGNAL COMPRESSOR AND EXPANDER

Family Applications Before (2)

Application Number	Title	Priority Date	Filing Date
AT0291681A AT386911B (en)	1980-06-30	1981-06-30	CIRCUIT ARRANGEMENT FOR MODIFYING THE DYNAMIC RANGE
AT0291581A AT372796B (en)	1980-06-30	1981-06-30	CIRCUIT ARRANGEMENT FOR CHANGING THE DYNAMIC RANGE OF SIGNALS

Country Status (17)

Country	Link
KR (4)	KR880000106B1 (en)
AT (3)	AT386911B (en)
AU (3)	AU546641B2 (en)
BR (3)	BR8104158A (en)
CH (3)	CH654703A5 (en)
DE (3)	DE3125790A1 (en)
DK (3)	DK168806B1 (en)
ES (3)	ES503493A0 (en)
FI (3)	FI79428C (en)
GB (3)	GB2079113B (en)
HK (3)	HK28385A (en)
IT (3)	IT1137985B (en)
MY (3)	MY8501149A (en)
NL (3)	NL190214C (en)
NO (3)	NO157398C (en)
SE (3)	SE447524B (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
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
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
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
GB1367002A (en) *	1971-04-06	1974-09-18	Victor Company Of Japan	Compression and/or expansion system and circuit
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
US3909733A (en) *	1973-05-17	1975-09-30	Dolby Laboratories Inc	Dynamic range modifying circuits utilizing variable negative resistance
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 DK282881A patent/DK172325B1/en not_active IP Right Cessation
- 1981-06-26 DK DK282581A patent/DK156356C/en not_active IP Right Cessation
- 1981-06-29 SE SE8104061A patent/SE447524B/en not_active IP Right Cessation
- 1981-06-29 SE SE8104062A patent/SE450985B/en not_active IP Right Cessation
- 1981-06-29 SE SE8104063A patent/SE447525B/en not_active IP Right Cessation
- 1981-06-29 FI FI812025A patent/FI79428C/en not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103122,A patent/NL190214C/en not_active IP Right Cessation
- 1981-06-29 ES ES503493A patent/ES503493A0/en active Granted
- 1981-06-29 NO NO812216A patent/NO157398C/en not_active IP Right Cessation
- 1981-06-29 NO NO812218A patent/NO157400C/en not_active IP Right Cessation
- 1981-06-29 FI FI812024A patent/FI74368C/en not_active IP Right Cessation
- 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 GB GB8119973A patent/GB2079113B/en not_active Expired
- 1981-06-29 NL NL8103123A patent/NL192652C/en not_active IP Right Cessation
- 1981-06-29 NO NO812217A patent/NO157399C/en not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103124,A patent/NL189988C/en not_active IP Right Cessation
- 1981-06-29 GB GB8119972A patent/GB2079112B/en not_active Expired
- 1981-06-29 GB GB8119974A patent/GB2079114B/en not_active Expired
- 1981-06-29 ES ES503496A patent/ES8204255A1/en not_active Expired
- 1981-06-30 AT AT0291681A patent/AT386911B/en not_active IP Right Cessation
- 1981-06-30 CH CH4293/81A patent/CH654703A5/en not_active IP Right Cessation
- 1981-06-30 AT AT0291581A patent/AT372796B/en not_active IP Right Cessation
- 1981-06-30 KR KR1019810002351A patent/KR880000106B1/en active
- 1981-06-30 AT AT0291481A patent/AT386304B/en not_active IP Right Cessation
- 1981-06-30 DE DE19813125790 patent/DE3125790A1/en active Granted
- 1981-06-30 IT IT22650/81A patent/IT1137985B/en active
- 1981-06-30 BR BR8104158A patent/BR8104158A/en not_active IP Right Cessation
- 1981-06-30 IT IT22651/81A patent/IT1137986B/en active
- 1981-06-30 CH CH4292/81A patent/CH662684A5/en not_active IP Right Cessation
- 1981-06-30 BR BR8104157A patent/BR8104157A/en not_active IP Right Cessation
- 1981-06-30 AU AU72365/81A patent/AU546641B2/en not_active Expired
- 1981-06-30 CH CH4294/81A patent/CH660653A5/en not_active IP Right Cessation
- 1981-06-30 DE DE3125789A patent/DE3125789C2/en not_active Expired
- 1981-06-30 KR KR1019810002352A patent/KR840002491B1/en active
- 1981-06-30 AU AU72393/81A patent/AU544888B2/en not_active Expired
- 1981-06-30 AU AU72394/81A patent/AU545125B2/en not_active Expired
- 1981-06-30 IT IT22652/81A patent/IT1137987B/en active
- 1981-06-30 BR BR8104156A patent/BR8104156A/en not_active IP Right Cessation
- 1981-06-30 DE DE19813125788 patent/DE3125788A1/en active Granted
- 1981-06-30 KR KR1019810002350A patent/KR880000105B1/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 HK283/85A patent/HK28385A/en not_active IP Right Cessation
- 1985-04-04 HK HK284/85A patent/HK28485A/en not_active IP Right Cessation
- 1985-04-04 HK HK282/85A patent/HK28285A/en not_active IP Right Cessation
- 1985-12-30 MY MY1149/85A patent/MY8501149A/en unknown
- 1985-12-30 MY MY1148/85A patent/MY8501148A/en unknown
- 1985-12-30 MY MY1147/85A patent/MY8501147A/en unknown

Also Published As

Publication number	Publication date
MY8501149A (en)	1985-12-31
DE3125790A1 (en)	1982-05-13
NO812216L (en)	1982-01-04
ES503496A0 (en)	1982-04-16
CH654703A5 (en)	1986-02-28
AU7239381A (en)	1982-01-07
DE3125788A1 (en)	1982-05-13
AT386911B (en)	1988-11-10
NL8103124A (en)	1982-01-18
IT8122650A0 (en)	1981-06-30
FI79428C (en)	1989-12-11
AU545125B2 (en)	1985-07-04
GB2079114A (en)	1982-01-13
NO157398B (en)	1987-11-30
BR8104156A (en)	1982-03-16
DE3125790C2 (en)	1992-11-12
GB2079113A (en)	1982-01-13
DE3125788C2 (en)	1992-06-11
DK282581A (en)	1981-12-31
SE450985B (en)	1987-09-07
HK28285A (en)	1985-04-12
FI74368C (en)	1988-01-11
FI812026L (en)	1981-12-31
GB2079112A (en)	1982-01-13
SG4285G (en)	1985-06-14
NL190214B (en)	1993-07-01
ATA291681A (en)	1988-03-15
DK282881A (en)	1981-12-31
NO812217L (en)	1982-01-04
KR830006992A (en)	1983-10-12
FI79428B (en)	1989-08-31
GB2079113B (en)	1984-10-03
NL8103123A (en)	1982-01-18
NO812218L (en)	1982-01-04
DK168806B1 (en)	1994-06-13
GB2079114B (en)	1984-10-03
SE8104063L (en)	1981-12-31
IT1137985B (en)	1986-09-10
SE8104061L (en)	1981-12-31
KR840002492B1 (en)	1984-12-31
ES8204255A1 (en)	1982-04-16
IT1137986B (en)	1986-09-10
NO157398C (en)	1988-03-09
DK172325B1 (en)	1998-03-16
ATA291481A (en)	1987-12-15
NL189988C (en)	1993-09-16
NL192652B (en)	1997-07-01
DK156356B (en)	1989-08-07
CH660653A5 (en)	1987-05-15
KR840002491B1 (en)	1984-12-31
ES8301084A1 (en)	1982-11-01
NO157400B (en)	1987-11-30
HK28485A (en)	1985-04-12
FI74368B (en)	1987-09-30
IT8122651A0 (en)	1981-06-30
AU544888B2 (en)	1985-06-20
ES503497A0 (en)	1982-11-01
AU7236581A (en)	1982-01-07
BR8104158A (en)	1982-03-16
SE447524B (en)	1986-11-17
SE8104062L (en)	1981-12-31
NL8103122A (en)	1982-01-18
NL190214C (en)	1993-12-01
IT1137987B (en)	1986-09-10
ATA291581A (en)	1983-03-15
ES8300233A1 (en)	1982-10-01
MY8501147A (en)	1985-12-31
FI76456B (en)	1988-06-30
AT372796B (en)	1983-11-10
SE447525B (en)	1986-11-17
FI812024L (en)	1981-12-31
CH662684A5 (en)	1987-10-15
NL189988B (en)	1993-04-16
ES503493A0 (en)	1982-10-01
HK28385A (en)	1985-04-12
AU7239481A (en)	1982-01-07
SG4385G (en)	1985-06-14
DK156356C (en)	1989-12-27
DE3125789C2 (en)	1984-01-12
KR830006993A (en)	1983-10-12
BR8104157A (en)	1982-03-16
NO157399C (en)	1988-03-09
NO157399B (en)	1987-11-30
MY8501148A (en)	1985-12-31
AU546641B2 (en)	1985-09-12
DE3125789A1 (en)	1982-05-19
FI76456C (en)	1988-10-10
DK282981A (en)	1981-12-31
SG4585G (en)	1985-06-14
FI812025L (en)	1981-12-31
KR880000106B1 (en)	1988-02-23
IT8122652A0 (en)	1981-06-30
NO157400C (en)	1988-03-09
KR880000105B1 (en)	1988-02-23
NL192652C (en)	1997-11-04
GB2079112B (en)	1984-10-03

Legal Events

Date	Code	Title	Description
2006-08-15	ELA	Expired due to lapse of time

Publication	Publication Date	Title
AR229352A1 (en)	1983-07-29	COMPRESSOR
DK367384A (en)	1985-01-30	COMPRESSOR
TR21804A (en)	1985-07-19	ZIRAI UERELER AND IZOUERELER
DK367784D0 (en)	1984-07-27	COMPRESSOR
DK97684D0 (en)	1984-02-24	COMPRESSOR
BR8007897A (en)	1981-08-11	HELICOIDAL COMPRESSOR
ES505582A0 (en)	1983-02-16	COMPRESSOR CYLINDERS
IT1193576B (en)	1988-07-08	17ALPHA-ACYLOXY-5BETA-CORTICOID AND 17ALPHA-ACYLOXY-5ALPHA-CORTICOID
TR21883A (en)	1985-10-03	(+) - 4-SUBSTITUEE-2-INDANOLES AND INSECTIVE ESTER TUEREVLER
AT374960B (en)	1984-06-25	REFRIGERATION
BR8402119A (en)	1985-03-19	RADIAL COMPRESSOR
AT386304B (en)	1988-08-10	SIGNAL COMPRESSOR AND EXPANDER
IT1130053B (en)	1986-06-11	FRIFORIFEROUS COMPRESSOR
BE890953A (en)	1982-05-03	COMPRESSOR
IT1142142B (en)	1986-10-08	5ALFA-ANDROSTAN-17BETA-CARBOXYLATE AND 5BETA-ANDROSTAN-17BETA-CARBOXYLATE
BR8303027A (en)	1984-04-17	COMPRESSOR SET
IT1135612B (en)	1986-08-27	SWITCHABLE SIGNAL COMPRESSOR / SIGNAL EXPANDER
IT1138616B (en)	1986-09-17	CENTRIFUGAL COMPRESSOR
IT1140449B (en)	1986-09-24	SIGNAL EXPANDER
KR840006205U (en)	1984-11-30	Compressor
DK74781A (en)	1981-08-21	COMPRESSOR
DK109680A (en)	1981-09-15	INFORMATION COMPRESSOR AND / OR COMPRESSOR
DE3475192D1 (en)	1988-12-22	PYRROLIZIDINONES AND INDOLIZIDONES
IT1140544B (en)	1986-10-01	COMPRESSOR
ES248242Y (en)	1981-01-16	PERFECTED COMPRESSOR