BR8104157A - CIRCUIT ARRANGEMENTS FOR REDUCING THE EFFECTS OF AVERAGE OVERLOAD IN RECORDING AND SIGNAL TRANSMISSION SYSTEMS - Google Patents

CIRCUIT ARRANGEMENTS FOR REDUCING THE EFFECTS OF AVERAGE OVERLOAD IN RECORDING AND SIGNAL TRANSMISSION SYSTEMS

Info

Publication number: BR8104157A
Authority: BR; Brazil
Prior art keywords: recording; reducing; effects; signal transmission; transmission systems
Prior art date: 1980-06-30

Application number

BR8104157A

Other languages

Portuguese (pt)

Inventor

Ray M Dolby

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

1982-03-16

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

1982-03-16 Publication of BR8104157A publication Critical patent/BR8104157A/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

BR8104157A 1980-06-30 1981-06-30 CIRCUIT ARRANGEMENTS FOR REDUCING THE EFFECTS OF AVERAGE OVERLOAD IN RECORDING AND SIGNAL TRANSMISSION SYSTEMS BR8104157A (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 (1)

Publication Number	Publication Date
BR8104157A true BR8104157A (en)	1982-03-16

Family

ID=26860115

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
BR8104158A BR8104158A (en)	1980-06-30	1981-06-30	CIRCUITS FOR SUPPRESSING EFFECTS OF MEDIUM FREQUENCY MODULATION ON COMPRESSORS, EXPANDERS AND NOISE REDUCTION SYSTEMS
BR8104157A BR8104157A (en)	1980-06-30	1981-06-30	CIRCUIT ARRANGEMENTS FOR REDUCING THE EFFECTS OF AVERAGE OVERLOAD IN RECORDING AND SIGNAL TRANSMISSION SYSTEMS
BR8104156A BR8104156A (en)	1980-06-30	1981-06-30	CIRCUIT ARRANGEMENT FOR DYNAMIC BAND MODIFICATION AND NOISE REDUCTION ARRANGEMENT

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
BR8104158A BR8104158A (en)	1980-06-30	1981-06-30	CIRCUITS FOR SUPPRESSING EFFECTS OF MEDIUM FREQUENCY MODULATION ON COMPRESSORS, EXPANDERS AND NOISE REDUCTION SYSTEMS

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
BR8104156A BR8104156A (en)	1980-06-30	1981-06-30	CIRCUIT ARRANGEMENT FOR DYNAMIC BAND MODIFICATION AND NOISE REDUCTION ARRANGEMENT

Country Status (17)

Country	Link
KR (4)	KR880000105B1 (en)
AT (3)	AT372796B (en)
AU (3)	AU546641B2 (en)
BR (3)	BR8104158A (en)
CH (3)	CH662684A5 (en)
DE (3)	DE3125789C2 (en)
DK (3)	DK168806B1 (en)
ES (3)	ES8300233A1 (en)
FI (3)	FI76456C (en)
GB (3)	GB2079114B (en)
HK (3)	HK28385A (en)
IT (3)	IT1137985B (en)
MY (3)	MY8501148A (en)
NL (3)	NL190214C (en)
NO (3)	NO157399C (en)
SE (3)	SE450985B (en)
SG (3)	SG4585G (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)

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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
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
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 SE8104062A patent/SE450985B/en not_active IP Right Cessation
- 1981-06-29 ES ES503493A patent/ES8300233A1/en not_active Expired
- 1981-06-29 NL NLAANVRAGE8103122,A patent/NL190214C/en not_active IP Right Cessation
- 1981-06-29 GB GB8119974A patent/GB2079114B/en not_active Expired
- 1981-06-29 SE SE8104063A patent/SE447525B/en not_active IP Right Cessation
- 1981-06-29 NO NO812217A patent/NO157399C/en not_active IP Right Cessation
- 1981-06-29 GB GB8119973A patent/GB2079113B/en not_active Expired
- 1981-06-29 ES ES503497A patent/ES8301084A1/en not_active Expired
- 1981-06-29 FI FI812026A patent/FI76456C/en not_active IP Right Cessation
- 1981-06-29 SE SE8104061A patent/SE447524B/en not_active IP Right Cessation
- 1981-06-29 FI FI812024A patent/FI74368C/en not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103124,A patent/NL189988C/en not_active IP Right Cessation
- 1981-06-29 ES ES503496A patent/ES8204255A1/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 NO NO812216A patent/NO157398C/en not_active IP Right Cessation
- 1981-06-29 FI FI812025A patent/FI79428C/en not_active IP Right Cessation
- 1981-06-29 GB GB8119972A patent/GB2079112B/en not_active Expired
- 1981-06-30 DE DE3125789A patent/DE3125789C2/en not_active Expired
- 1981-06-30 DE DE19813125790 patent/DE3125790A1/en active Granted
- 1981-06-30 BR BR8104158A patent/BR8104158A/en not_active IP Right Cessation
- 1981-06-30 AU AU72365/81A patent/AU546641B2/en not_active Expired
- 1981-06-30 BR BR8104157A patent/BR8104157A/en not_active IP Right Cessation
- 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 KR KR1019810002350A patent/KR880000105B1/en active
- 1981-06-30 KR KR1019810002351A patent/KR880000106B1/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 AT AT0291681A patent/AT386911B/en not_active IP Right Cessation
- 1981-06-30 AT AT0291481A patent/AT386304B/en not_active IP Right Cessation
- 1981-06-30 CH CH4294/81A patent/CH660653A5/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 IT IT22652/81A patent/IT1137987B/en active
- 1981-06-30 AU AU72393/81A patent/AU544888B2/en not_active Expired
- 1981-06-30 CH CH4293/81A patent/CH654703A5/en not_active IP Right Cessation
- 1981-06-30 IT IT22651/81A patent/IT1137986B/en active
- 1981-06-30 KR KR1019810002352A patent/KR840002491B1/en active
1984
- 1984-09-19 KR KR1019840005735A patent/KR840002492B1/en not_active IP Right Cessation
1985
- 1985-01-16 SG SG45/85A patent/SG4585G/en unknown
- 1985-01-16 SG SG42/85A patent/SG4285G/en unknown
- 1985-01-16 SG SG43/85A patent/SG4385G/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 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
MY8501148A (en)	1985-12-31
DK156356C (en)	1989-12-27
DK282981A (en)	1981-12-31
IT1137985B (en)	1986-09-10
DE3125789C2 (en)	1984-01-12
NO157399C (en)	1988-03-09
NL192652C (en)	1997-11-04
CH654703A5 (en)	1986-02-28
KR840002491B1 (en)	1984-12-31
KR830006992A (en)	1983-10-12
NO812217L (en)	1982-01-04
DE3125788C2 (en)	1992-06-11
IT8122652A0 (en)	1981-06-30
DK282881A (en)	1981-12-31
ATA291481A (en)	1987-12-15
DK168806B1 (en)	1994-06-13
ES503496A0 (en)	1982-04-16
NO157400C (en)	1988-03-09
FI812025L (en)	1981-12-31
SE447525B (en)	1986-11-17
FI74368B (en)	1987-09-30
DE3125789A1 (en)	1982-05-19
SG4285G (en)	1985-06-14
HK28385A (en)	1985-04-12
NL8103123A (en)	1982-01-18
GB2079113A (en)	1982-01-13
ES503493A0 (en)	1982-10-01
NL192652B (en)	1997-07-01
SE450985B (en)	1987-09-07
IT1137986B (en)	1986-09-10
AU7239481A (en)	1982-01-07
GB2079113B (en)	1984-10-03
HK28485A (en)	1985-04-12
GB2079114A (en)	1982-01-13
NO812218L (en)	1982-01-04
FI76456B (en)	1988-06-30
SE8104061L (en)	1981-12-31
AT372796B (en)	1983-11-10
GB2079112B (en)	1984-10-03
DE3125790A1 (en)	1982-05-13
NO157398B (en)	1987-11-30
BR8104158A (en)	1982-03-16
NO157399B (en)	1987-11-30
ES503497A0 (en)	1982-11-01
SE8104063L (en)	1981-12-31
FI74368C (en)	1988-01-11
KR880000105B1 (en)	1988-02-23
AU545125B2 (en)	1985-07-04
NO157400B (en)	1987-11-30
FI812026L (en)	1981-12-31
DE3125788A1 (en)	1982-05-13
KR830006993A (en)	1983-10-12
NL190214B (en)	1993-07-01
NO812216L (en)	1982-01-04
DE3125790C2 (en)	1992-11-12
BR8104156A (en)	1982-03-16
FI76456C (en)	1988-10-10
ES8301084A1 (en)	1982-11-01
CH662684A5 (en)	1987-10-15
GB2079112A (en)	1982-01-13
IT8122650A0 (en)	1981-06-30
DK156356B (en)	1989-08-07
FI812024L (en)	1981-12-31
ES8204255A1 (en)	1982-04-16
AU7236581A (en)	1982-01-07
NL8103122A (en)	1982-01-18
AU546641B2 (en)	1985-09-12
FI79428C (en)	1989-12-11
CH660653A5 (en)	1987-05-15
SE447524B (en)	1986-11-17
ATA291581A (en)	1983-03-15
SE8104062L (en)	1981-12-31
SG4385G (en)	1985-06-14
IT1137987B (en)	1986-09-10
AT386911B (en)	1988-11-10
NL190214C (en)	1993-12-01
AT386304B (en)	1988-08-10
MY8501147A (en)	1985-12-31
IT8122651A0 (en)	1981-06-30
HK28285A (en)	1985-04-12
DK172325B1 (en)	1998-03-16
NL189988B (en)	1993-04-16
NL8103124A (en)	1982-01-18
DK282581A (en)	1981-12-31
NL189988C (en)	1993-09-16
KR840002492B1 (en)	1984-12-31
AU7239381A (en)	1982-01-07
GB2079114B (en)	1984-10-03
KR880000106B1 (en)	1988-02-23
ATA291681A (en)	1988-03-15
SG4585G (en)	1985-06-14
AU544888B2 (en)	1985-06-20
MY8501149A (en)	1985-12-31
FI79428B (en)	1989-08-31
ES8300233A1 (en)	1982-10-01
NO157398C (en)	1988-03-09

Publication	Publication Date	Title
DE3484535D1 (en)	1991-06-06	MAGNETIC RECORDING AND PLAYBACK DEVICE.
GB2086692B (en)	1984-03-28	Signal recording and/or reproducing technique
DE3365214D1 (en)	1986-09-18	Magnetical reproducing and/or recording device
BR8003374A (en)	1980-12-30	RECORDING AND / OR REPRODUCTION EQUIPMENT IN MAGNETIC TAPE
ES492420A0 (en)	1981-03-16	IMPROVEMENTS IN ELECTRONIC CIRCUITS FOR RECORDING FALSE INFORMATION FOR VEHI-CULOS SAFETY DEVICES
DE3279583D1 (en)	1989-05-03	Method and circuit arrangement for recording and/or reproducing large-bandwidth signals
NL192472B (en)	1997-04-01	Tape recording and / or display device.
DE3276562D1 (en)	1987-07-16	Chroma signal recording and reproducing circuit
AU587171B2 (en)	1989-08-10	Record and/or playback device
IT8147672A0 (en)	1981-01-30	SIGNAL DROP COMPENSATION EQUIPMENT IN INFORMATION RECORDING AND REPRODUCTION SYSTEMS
ATA302784A (en)	1991-01-15	MAGNETIC RECORDING AND PLAYBACK DEVICE
JPS57159190A (en)	1982-10-01	Wide band signal recording and/or reproducing method and circuit device for performing same method
KR850000982U (en)	1985-03-30	Disc record and playback device
AU8172682A (en)	1982-10-28	Read signal processing circuit
KR840006381U (en)	1984-12-03	Disc type recording and playback devices
BR8104157A (en)	1982-03-16	CIRCUIT ARRANGEMENTS FOR REDUCING THE EFFECTS OF AVERAGE OVERLOAD IN RECORDING AND SIGNAL TRANSMISSION SYSTEMS
DE3381719D1 (en)	1990-08-16	MAGNETIC RECORDING AND PLAYBACK DEVICE.
AT379908B (en)	1986-03-10	MAGNETIC RECORDING AND / OR PLAYBACK DEVICE
ZA814423B (en)	1982-07-28	Circuit arrangements for reducing media overload effects in signal recording and transmission systems
JPS56120966A (en)	1981-09-22	Video signal threshold circuit and video processor
ATA188081A (en)	1990-07-15	SIGNAL PLAYBACK CIRCUIT
DE3483640D1 (en)	1991-01-03	MAGNETIC RECORDING AND PLAYBACK DEVICE.
IT8121963A1 (en)	1982-11-26	RECORDING AND / OR REPRODUCTION EQUIPMENT
NL191040C (en)	1994-12-16	Polymer composition and magnetic recording medium or tape in which the polymer composition is used.
AU542801B2 (en)	1985-03-14	Accumulated value determining and recording system

Legal Events

Date	Code	Title	Description
1996-10-08	MK	Patent expired	Effective date: 19960630