DK156356C - CIRCUIT TO REDUCE OVERLOAD EFFECTS IN SIGNAL RECORDING AND TRANSMISSION SYSTEMS - Google Patents

CIRCUIT TO REDUCE OVERLOAD EFFECTS IN SIGNAL RECORDING AND TRANSMISSION SYSTEMS

Info

Publication number: DK156356C
Authority: DK; Denmark
Prior art keywords: circuit; signal recording; transmission systems; reduce overload; overload effects
Prior art date: 1980-06-30

Application number

DK282581A

Other languages

Danish (da)

Other versions

DK156356B (en

DK282581A (en

Inventor

Ray Milton Dolby

Original Assignee

Ray Milton Dolby

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

1981-06-26

Publication date

1989-12-27

1981-06-26 Application filed by Ray Milton Dolby filed Critical Ray Milton Dolby

1981-12-31 Publication of DK282581A publication Critical patent/DK282581A/en

1989-08-07 Publication of DK156356B publication Critical patent/DK156356B/en

1989-12-27 Application granted granted Critical

1989-12-27 Publication of DK156356C publication Critical patent/DK156356C/en

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

DK282581A 1980-06-30 1981-06-26 CIRCUIT TO REDUCE OVERLOAD EFFECTS IN SIGNAL RECORDING AND TRANSMISSION SYSTEMS DK156356C (en)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date
US16395080A	1980-06-30	1980-06-30
US16395080		1980-06-30
US18077180A	1980-08-22	1980-08-22
US18077180		1980-08-22

Publications (3)

Publication Number	Publication Date
DK282581A DK282581A (en)	1981-12-31
DK156356B DK156356B (en)	1989-08-07
DK156356C true DK156356C (en)	1989-12-27

Family

ID=26860115

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
DK282981A DK168806B1 (en)	1980-06-30	1981-06-26	Circuit arrangement for dynamic range modification
DK282581A DK156356C (en)	1980-06-30	1981-06-26	CIRCUIT TO REDUCE OVERLOAD EFFECTS IN SIGNAL RECORDING AND TRANSMISSION SYSTEMS
DK282881A DK172325B1 (en)	1980-06-30	1981-06-26	Signal compressor and signal expander for use in a transmission system

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
DK282981A DK168806B1 (en)	1980-06-30	1981-06-26	Circuit arrangement for dynamic range modification

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
DK282881A DK172325B1 (en)	1980-06-30	1981-06-26	Signal compressor and signal expander for use in a transmission system

Country Status (17)

Country	Link
KR (4)	KR840002491B1 (en)
AT (3)	AT372796B (en)
AU (3)	AU546641B2 (en)
BR (3)	BR8104156A (en)
CH (3)	CH662684A5 (en)
DE (3)	DE3125788A1 (en)
DK (3)	DK168806B1 (en)
ES (3)	ES8204255A1 (en)
FI (3)	FI76456C (en)
GB (3)	GB2079112B (en)
HK (3)	HK28285A (en)
IT (3)	IT1137987B (en)
MY (3)	MY8501147A (en)
NL (3)	NL189988C (en)
NO (3)	NO157399C (en)
SE (3)	SE447525B (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
US3903485A (en) *	1968-01-10	1975-09-02	Ray Milton Dolby	Compressors, expanders and noise reduction systems
GB1253031A (en) *	1968-01-10	1971-11-10
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
US3795876A (en) *	1971-04-06	1974-03-05	Victor Company Of Japan	Compression and/or expansion system and circuit
GB1432763A (en) *	1972-05-02	1976-04-22	Dolby Laboratories Inc	Compressors expanders and noise reduction systems
US3875537A (en) *	1972-05-02	1975-04-01	Dolby Laboratories Inc	Circuits for modifying the dynamic range of an input signal
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 SE SE8104063A patent/SE447525B/en not_active IP Right Cessation
- 1981-06-29 FI FI812026A patent/FI76456C/en not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103124,A patent/NL189988C/en not_active IP Right Cessation
- 1981-06-29 SE SE8104061A patent/SE447524B/en not_active IP Right Cessation
- 1981-06-29 FI FI812025A patent/FI79428C/en not_active IP Right Cessation
- 1981-06-29 NO NO812217A patent/NO157399C/en not_active IP Right Cessation
- 1981-06-29 ES ES503496A patent/ES8204255A1/en not_active Expired
- 1981-06-29 ES ES503493A patent/ES8300233A1/en not_active Expired
- 1981-06-29 NO NO812218A patent/NO157400C/en not_active IP Right Cessation
- 1981-06-29 NL NL8103123A patent/NL192652C/en not_active IP Right Cessation
- 1981-06-29 ES ES503497A patent/ES8301084A1/en not_active Expired
- 1981-06-29 NL NLAANVRAGE8103122,A patent/NL190214C/en not_active IP Right Cessation
- 1981-06-29 FI FI812024A patent/FI74368C/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 GB GB8119973A patent/GB2079113B/en not_active Expired
- 1981-06-29 NO NO812216A patent/NO157398C/en not_active IP Right Cessation
- 1981-06-29 SE SE8104062A patent/SE450985B/en not_active IP Right Cessation
- 1981-06-30 IT IT22652/81A patent/IT1137987B/en active
- 1981-06-30 AU AU72365/81A patent/AU546641B2/en not_active Expired
- 1981-06-30 DE DE19813125788 patent/DE3125788A1/en active Granted
- 1981-06-30 DE DE19813125790 patent/DE3125790A1/en active Granted
- 1981-06-30 AT AT0291581A patent/AT372796B/en not_active IP Right Cessation
- 1981-06-30 CH CH4292/81A patent/CH662684A5/en not_active IP Right Cessation
- 1981-06-30 AU AU72393/81A patent/AU544888B2/en not_active Expired
- 1981-06-30 DE DE3125789A patent/DE3125789C2/en not_active Expired
- 1981-06-30 BR BR8104156A patent/BR8104156A/en not_active IP Right Cessation
- 1981-06-30 KR KR1019810002352A patent/KR840002491B1/en not_active Expired
- 1981-06-30 BR BR8104158A patent/BR8104158A/en not_active IP Right Cessation
- 1981-06-30 AU AU72394/81A patent/AU545125B2/en not_active Expired
- 1981-06-30 CH CH4294/81A patent/CH660653A5/en not_active IP Right Cessation
- 1981-06-30 KR KR1019810002350A patent/KR880000105B1/en not_active Expired
- 1981-06-30 KR KR1019810002351A patent/KR880000106B1/en not_active Expired
- 1981-06-30 AT AT0291481A patent/AT386304B/en not_active IP Right Cessation
- 1981-06-30 IT IT22650/81A patent/IT1137985B/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 CH CH4293/81A patent/CH654703A5/en not_active IP Right Cessation
- 1981-06-30 IT IT22651/81A patent/IT1137986B/en active
1984
- 1984-09-19 KR KR1019840005735A patent/KR840002492B1/en not_active Expired
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 MY1147/85A patent/MY8501147A/en unknown
- 1985-12-30 MY MY1148/85A patent/MY8501148A/en unknown
- 1985-12-30 MY MY1149/85A patent/MY8501149A/en unknown

Also Published As

Publication number	Publication date
NL189988B (en)	1993-04-16
FI76456B (en)	1988-06-30
GB2079114B (en)	1984-10-03
AT386911B (en)	1988-11-10
SE447525B (en)	1986-11-17
NO157398B (en)	1987-11-30
ES503496A0 (en)	1982-04-16
KR830006992A (en)	1983-10-12
GB2079113B (en)	1984-10-03
ES503493A0 (en)	1982-10-01
FI74368C (en)	1988-01-11
NO157398C (en)	1988-03-09
DE3125788A1 (en)	1982-05-13
MY8501147A (en)	1985-12-31
DE3125789A1 (en)	1982-05-19
AU7239381A (en)	1982-01-07
DK282881A (en)	1981-12-31
BR8104156A (en)	1982-03-16
NL8103122A (en)	1982-01-18
NO812218L (en)	1982-01-04
IT1137987B (en)	1986-09-10
IT8122652A0 (en)	1981-06-30
CH660653A5 (en)	1987-05-15
MY8501148A (en)	1985-12-31
ATA291681A (en)	1988-03-15
AT372796B (en)	1983-11-10
KR840002492B1 (en)	1984-12-31
KR880000105B1 (en)	1988-02-23
SE8104062L (en)	1981-12-31
NL8103123A (en)	1982-01-18
SE8104063L (en)	1981-12-31
CH662684A5 (en)	1987-10-15
AT386304B (en)	1988-08-10
AU544888B2 (en)	1985-06-20
FI79428B (en)	1989-08-31
NO812217L (en)	1982-01-04
DE3125790A1 (en)	1982-05-13
AU7236581A (en)	1982-01-07
GB2079114A (en)	1982-01-13
HK28285A (en)	1985-04-12
FI74368B (en)	1987-09-30
KR840002491B1 (en)	1984-12-31
AU546641B2 (en)	1985-09-12
FI76456C (en)	1988-10-10
CH654703A5 (en)	1986-02-28
FI79428C (en)	1989-12-11
AU7239481A (en)	1982-01-07
NO157400C (en)	1988-03-09
DE3125790C2 (en)	1992-11-12
DK156356B (en)	1989-08-07
KR830006993A (en)	1983-10-12
IT8122651A0 (en)	1981-06-30
SE450985B (en)	1987-09-07
NL192652B (en)	1997-07-01
NL192652C (en)	1997-11-04
DE3125788C2 (en)	1992-06-11
SG4385G (en)	1985-06-14
NL8103124A (en)	1982-01-18
HK28385A (en)	1985-04-12
FI812026L (en)	1981-12-31
FI812024L (en)	1981-12-31
ES8204255A1 (en)	1982-04-16
IT1137985B (en)	1986-09-10
ATA291481A (en)	1987-12-15
GB2079112B (en)	1984-10-03
ES8300233A1 (en)	1982-10-01
FI812025L (en)	1981-12-31
GB2079113A (en)	1982-01-13
IT8122650A0 (en)	1981-06-30
NO812216L (en)	1982-01-04
MY8501149A (en)	1985-12-31
BR8104157A (en)	1982-03-16
ATA291581A (en)	1983-03-15
SG4585G (en)	1985-06-14
DK282581A (en)	1981-12-31
DK172325B1 (en)	1998-03-16
NL189988C (en)	1993-09-16
NO157400B (en)	1987-11-30
NO157399C (en)	1988-03-09
SE8104061L (en)	1981-12-31
DE3125789C2 (en)	1984-01-12
HK28485A (en)	1985-04-12
SE447524B (en)	1986-11-17
AU545125B2 (en)	1985-07-04
IT1137986B (en)	1986-09-10
GB2079112A (en)	1982-01-13
KR880000106B1 (en)	1988-02-23
SG4285G (en)	1985-06-14
NL190214C (en)	1993-12-01
DK282981A (en)	1981-12-31
NL190214B (en)	1993-07-01
DK168806B1 (en)	1994-06-13
NO157399B (en)	1987-11-30
BR8104158A (en)	1982-03-16
ES503497A0 (en)	1982-11-01
ES8301084A1 (en)	1982-11-01

Publication	Publication Date	Title
PT73668A (en)	1981-10-01	CIRCUIT BREAKERS
ZA811643B (en)	1982-09-29	Circuit interrupter with digital trip unit and opticallycoupled data input/output system
DK466181A (en)	1982-04-24	DIGITAL LINE CIRCUIT
ES499824A0 (en)	1982-03-01	IMPROVEMENTS IN NIVELK CIRCUITS OF ADAPTA-BLES DECISION IN SYSTEMS TO RECEIVE DIGITAL SIGNALS
FR2483123B1 (en)	1985-08-23	PERFECTED CIRCUIT BREAKER
KR830001043U (en)	1983-09-22	Circuit breaker
DK63281A (en)	1981-08-20	TELEPHONE CIRCUIT
DK156356C (en)	1989-12-27	CIRCUIT TO REDUCE OVERLOAD EFFECTS IN SIGNAL RECORDING AND TRANSMISSION SYSTEMS
KR860700194A (en)	1986-03-31	Digital signal transmission device
IT1167999B (en)	1987-05-20	CALCULATOR AND VIDEO COMBINER
GB2083961B (en)	1984-04-11	Signal interconnecting circuit
ATA188081A (en)	1990-07-15	SIGNAL PLAYBACK CIRCUIT
JPS56122278A (en)	1981-09-25	Circuit for multipexing input*output signal to single circuit terminal
DK476681A (en)	1982-04-30	CIRCUIT FOR THE TRANSMISSION OF DATA SIGNALS BETWEEN TWO DATA MINUTES IN A DATA TRANSFER
DK103081A (en)	1981-09-11	AMPLIFIER CIRCUIT
DK573785D0 (en)	1985-12-11	CIRCUIT TO INCREASE THE DYNAMIC AREA IN AN INTEGRATING OPTICAL ELECTRIC RECEIVER
KR850008766A (en)	1985-12-21	Digital signal transmission device
ZA814423B (en)	1982-07-28	Circuit arrangements for reducing media overload effects in signal recording and transmission systems
ATA286381A (en)	1992-05-15	INTERMEDIATE TELEVISION AMPLIFIER CIRCUIT
KR860002061A (en)	1986-03-26	Circuit with muting stage to increase signal attenuation
AT383451B (en)	1987-07-10	SIGNAL DETECTOR CIRCUIT
JPS5755624A (en)	1982-04-02	Signal buffer circuit
JPS5727398A (en)	1982-02-13	Digital signal-synchro signal reproducing circuit
KR860004422U (en)	1986-05-01	Muting circuit when no video signal input
ES498669A0 (en)	1982-01-01	IMPROVEMENTS IN SOUND PLAYBACK DEVICES

Legal Events

Date	Code	Title	Description
2001-07-09	PUP	Patent expired