Inventor

Ray M. Dolby

Inventor

San Francisco, CA, US

Overview

33→

Patents

1976–2000

Patent span

Electricity

Primary field (CPC H)

Patents· 33 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H03Gprimary

H03GControl of amplification26%

G11BInformation storage based on relative movement between record carrier and transducer22%

H04BTransmission14%

H04SStereophonic systems10%

G10LSpeech analysis techniques or speech synthesis7%

H04HBroadcast communication7%

H03HImpedance networks, e.g. resonant circuits5%

H04NPictorial communication, e.g. television5%

E03FSewers2%

G01BMeasuring length, thickness or similar linear dimensions2%

PatentTitleYear

6,016,473'Low bit-rate spatial coding method and system'2000 5,909,664'Method and apparatus for encoding and decoding audio information representing three-dimensional sound fields'1999 5,873,065'Two-stage compression and expansion of coupling processed multi-channel sound signals for transmission and recording'1999 5,632,005'Encoder/decoder for multidimensional sound fields'1997 5,583,962'Encoder/decoder for multidimensional sound fields'1996 5,185,806'Audio compressor, expander, and noise reduction circuits for consumer and semi-professional use'1993 5,003,522'Disc reproducing system for compensating mechanical imperfections'1991 4,922,535'Transient control aspects of circuit arrangements for altering the dynamic range of audio signals'1990 4,918,678'Disc reproducing system for compensating mechanical imperfections'1990 4,815,068'Audio encoder for use with more than one decoder each having different characteristics'1989 4,801,890'Circuit arrangements for modifying dynamic range using variable combining techniques'1989 4,786,879'Attenuator circuit employing bootstrapping'1988 4,773,094'Apparatus and method for calibrating recording and transmission systems'1988 4,766,395'Circuits to provide desired conductance characteristics using a FET'1988 4,755,979'Disc reproducing system for compensating mechanical imperfections'1988 4,736,433'Circuit arrangements for modifying dynamic range using action substitution and superposition techniques'1988 4,712,208'Disc reproducing system for compensating mechanical imperfections'1987 4,701,722'Circuit arrangements for modifying dynamic range using series and parallel circuit techniques'1987 4,498,055'Circuit arrangements for modifying dynamic range'1985 4,498,060'Circuit arrangements for modifying dynamic range using series arranged bi-linear circuits'1985 4,490,691'Compressor-expander circuits and, circuit arrangements for modifying dynamic range, for suppressing mid-frequency modulation effects and for reducing media overload'1984 4,388,729'Systems for reducing noise in video signals using amplitude averaging of undelayed and time delayed signals'1983 4,355,383'Apparatus for scanning variable area optical sound tracks by parallel processing discrete photosensor outputs'1982 4,338,684'Scanning system for reproducing side-by-side optical sound tracks'1982 4,281,217'Apparatus and method for the identification of specially encoded FM stereophonic broadcasts'1981 RE030468'Signal compressors and expanders'1980 4,223,188'Scanning system for reproduction of optical sound tracks with clear area noise discriminator delay means'1980 4,184,055'Scanning system for reproduction of optical sound tracks with clear area noise discriminator delay means'1980 4,024,344'Center channel derivation for stereophonic cinema sound'1977 3,978,409'Signal compressors and expanders'1976 3,972,010'Compressors, expanders and noise reduction systems'1976 3,967,219'Signal compressors and expanders'1976 3,934,190'Signal compressors and expanders'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1999Patents assigned to DOLBY RAY MILTON (20)· patent assignee history

1976–1983Patents assigned to DOLBY LABORATORIES INC (8)· patent assignee history

1976–2000Based in San Francisco, CA, US· patent location history

1976–1983Based in London, GB· patent location history

1982–1999Patents assigned to DOLBY LAB LICENSING CORP (5)· patent assignee history

1989Patents assigned to ALLEN IOAN R (1)· patent assignee history

1993Patents assigned to COSSETTE STANLEY G (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DOLBY RAY MILTONself	20	1976–1999
DOLBY LABORATORIES INC	8	1976–1983
DOLBY LAB LICENSING CORP	5	1982–1999
ALLEN IOAN R	1	1989
COSSETTE STANLEY G	1	1993

Locations

Location	Patents	Span
San Francisco, California, US	30	1976–2000
London, GB	3	1976–1983