DK140299B - Method for compressing and / or expanding the dynamic range of an input signal and circuitry for performing the method. - Google Patents

Method for compressing and / or expanding the dynamic range of an input signal and circuitry for performing the method.

Info

Publication number: DK140299B
Authority: DK; Denmark
Prior art keywords: compressing; expanding; circuitry; input signal; dynamic range
Prior art date: 1968-01-10

Application number

DK12669A

Other languages

Danish (da)

Other versions

DK140299C (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.)

1968-01-10

Filing date

1969-01-09

Publication date

1979-07-23

1969-01-09 Application filed by Ray Milton Dolby filed Critical Ray Milton Dolby

1977-01-14 Priority to DK14677A priority Critical patent/DK140300B/en

1977-01-14 Priority to DK14577A priority patent/DK140240B/en

1979-07-23 Publication of DK140299B publication Critical patent/DK140299B/en

1980-01-14 Application granted granted Critical

1980-01-14 Publication of DK140299C publication Critical patent/DK140299C/da

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
- H04B1/62—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 for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
- H04B1/64—Volume compression or expansion arrangements

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)
Processing Of Color Television Signals (AREA)

DK12669A 1968-01-10 1969-01-09 Method for compressing and / or expanding the dynamic range of an input signal and circuitry for performing the method. DK140299B (en)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
DK14677A DK140300B (en)	1968-01-10	1977-01-14	Signal compressor or expander.
DK14577A DK140240B (en)	1968-01-10	1977-01-14	Signal expander.

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB154068		1968-01-10

Publications (2)

Publication Number	Publication Date
DK140299B true DK140299B (en)	1979-07-23
DK140299C DK140299C (en)	1980-01-14

Family

ID=9723759

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK12669A DK140299B (en)	1968-01-10	1969-01-09	Method for compressing and / or expanding the dynamic range of an input signal and circuitry for performing the method.

Country Status (11)

Country	Link
JP (4)	JPS518284B1 (en)
AT (2)	AT303122B (en)
BE (1)	BE726177A (en)
CH (1)	CH501342A (en)
DE (1)	DE1900639B2 (en)
DK (1)	DK140299B (en)
FR (1)	FR1600207A (en)
GB (1)	GB1253031A (en)
NL (1)	NL161006C (en)
NO (2)	NO126505B (en)
SE (3)	SE367106B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1390341A (en) *	1971-03-12	1975-04-09	Dolby Laboratories Inc	Signal compressors and expanders
US3729693A (en) *	1971-08-02	1973-04-24	R Dolby	Compressor/expander switching methods and apparatus
GB1432763A (en) *	1972-05-02	1976-04-22	Dolby Laboratories Inc	Compressors expanders and noise reduction systems
GB1438711A (en) *	1973-01-23	1976-06-09	Dolby Laboratories Inc	Calibration oscillators for noise reduction systems
CA1000617A (en) *	1973-05-17	1976-11-30	Ray M. Dolby	Compressors, expanders and noise reduction systems
JPS5439516A (en) *	1977-09-02	1979-03-27	Sanyo Electric Co Ltd	Noise reduction unit
DE2856045A1 (en) *	1978-12-23	1980-07-10	Licentia Gmbh	CIRCUIT FOR SELECTING AUTOMATIC DYNAMIC COMPRESSION OR EXPANSION
DE2919280A1 (en) *	1979-05-12	1980-11-20	Licentia Gmbh	CIRCUIT FOR SELECTING AUTOMATIC DYNAMIC COMPRESSION OR EXPANSION
DK168806B1 (en) *	1980-06-30	1994-06-13	Ray Milton Dolby	Circuit arrangement for dynamic range modification
JP2005175674A (en) *	2003-12-09	2005-06-30	Nec Corp	Signal compression/decompression device and portable communication terminal
JP7165277B1 (en) *	2022-02-02	2022-11-02	幾美相澤	Reused food product and method for manufacturing reusable food product

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3111635A (en)	1960-05-05	1963-11-19	Fairchild Recording Equipment	Method and apparatus for eliminating overloading in modulating systems having pre-emphasis means
FR1489458A (en)	1965-08-13	1967-07-21	Ford France	Radiation curable paint binder

1968
- 1968-01-10 GB GB1253031D patent/GB1253031A/en not_active Expired
- 1968-12-27 BE BE726177D patent/BE726177A/xx not_active IP Right Cessation
- 1968-12-31 FR FR1600207D patent/FR1600207A/fr not_active Expired
1969
- 1969-01-06 NL NL6900209A patent/NL161006C/en not_active IP Right Cessation
- 1969-01-06 NO NO4969A patent/NO126505B/no unknown
- 1969-01-07 CH CH12869A patent/CH501342A/en not_active IP Right Cessation
- 1969-01-08 DE DE19691900639 patent/DE1900639B2/en not_active Ceased
- 1969-01-09 SE SE1768570A patent/SE367106B/xx unknown
- 1969-01-09 JP JP153269A patent/JPS518284B1/ja active Pending
- 1969-01-09 SE SE1768670A patent/SE366623B/xx unknown
- 1969-01-09 DK DK12669A patent/DK140299B/en not_active IP Right Cessation
- 1969-01-09 SE SE23669A patent/SE350379B/xx unknown
- 1969-01-10 AT AT22669A patent/AT303122B/en not_active IP Right Cessation
- 1969-01-10 AT AT47171A patent/AT308832B/en not_active IP Right Cessation
1971
- 1971-02-24 NO NO68971A patent/NO128842B/no unknown
1972
- 1972-02-12 JP JP1513972A patent/JPS518768B1/ja active Pending
- 1972-02-12 JP JP1513872A patent/JPS518767B1/ja active Pending
1975
- 1975-10-11 JP JP12336675A patent/JPS531602B1/ja active Pending

Also Published As

Publication number	Publication date
FR1600207A (en)	1970-07-20
NL6900209A (en)	1969-07-14
JPS518767B1 (en)	1976-03-19
JPS531602B1 (en)	1978-01-20
NL161006C (en)	1979-12-17
GB1253031A (en)	1971-11-10
NO128842B (en)	1974-01-14
SE350379B (en)	1972-10-23
AT303122B (en)	1972-11-10
NL161006B (en)	1979-07-16
BE726177A (en)	1969-05-29
DE1900639A1 (en)	1969-07-31
SE366623B (en)	1974-04-29
JPS518768B1 (en)	1976-03-19
JPS518284B1 (en)	1976-03-16
CH501342A (en)	1970-12-31
DK140299C (en)	1980-01-14
AT308832B (en)	1973-06-15
SE367106B (en)	1974-05-13
DE1900639B2 (en)	1976-04-01
NO126505B (en)	1973-02-12

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Legal Events

Date	Code	Title	Description
1989-02-20	PUP	Patent expired