FR2222808B1 - - Google Patents

Info

Publication number
FR2222808B1
FR2222808B1 FR7409652A FR7409652A FR2222808B1 FR 2222808 B1 FR2222808 B1 FR 2222808B1 FR 7409652 A FR7409652 A FR 7409652A FR 7409652 A FR7409652 A FR 7409652A FR 2222808 B1 FR2222808 B1 FR 2222808B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7409652A
Other versions
FR2222808A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DOLBY LABORATORIES Inc
Original Assignee
DOLBY LABORATORIES Inc
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.)
Filing date
Publication date
Application filed by DOLBY LABORATORIES Inc filed Critical DOLBY LABORATORIES Inc
Publication of FR2222808A1 publication Critical patent/FR2222808A1/fr
Application granted granted Critical
Publication of FR2222808B1 publication Critical patent/FR2222808B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Picture Signal Circuits (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR7409652A 1973-03-23 1974-03-21 Expired FR2222808B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1427273A GB1469101A (en) 1973-03-23 1973-03-23 Noise reduction systems

Publications (2)

Publication Number Publication Date
FR2222808A1 FR2222808A1 (fr) 1974-10-18
FR2222808B1 true FR2222808B1 (fr) 1981-06-12

Family

ID=10038165

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7409652A Expired FR2222808B1 (fr) 1973-03-23 1974-03-21

Country Status (7)

Country Link
US (1) US4388729A (fr)
JP (1) JPS6038914B2 (fr)
CA (1) CA1027240A (fr)
DE (1) DE2413799C2 (fr)
FR (1) FR2222808B1 (fr)
GB (1) GB1469101A (fr)
NL (1) NL177964C (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064530A (en) * 1976-11-10 1977-12-20 Cbs Inc. Noise reduction system for color television
JPS54118724A (en) * 1978-03-08 1979-09-14 Tokyo Hoso:Kk S/n improvement device for television video signal
GB2033190B (en) * 1978-09-21 1983-02-09 Sony Corp Video noise reduction system
JPS57111195A (en) * 1980-12-27 1982-07-10 Sony Corp Picture filter
JPS5955692A (ja) * 1982-09-25 1984-03-30 Victor Co Of Japan Ltd カラ−映像信号記録装置及び記録再生装置
US4573135A (en) * 1983-04-25 1986-02-25 Rca Corporation Digital lowpass filter having controllable gain
JPS6030285A (ja) * 1983-07-29 1985-02-15 Victor Co Of Japan Ltd 映像信号記録再生装置
JPS6184972A (ja) * 1984-10-03 1986-04-30 Hitachi Ltd 映像信号の垂直方向エンフアシス回路
US4646138A (en) * 1985-03-25 1987-02-24 Rca Corporation Video signal recursive filter with luma/chroma separation
US4652907A (en) * 1985-03-25 1987-03-24 Rca Corporation Apparatus for adaptively controlling a video signal recursive filter
US4737850A (en) * 1985-07-03 1988-04-12 Rca Corporation Apparatus for noise reducing composite video signal
US4817622A (en) * 1986-07-22 1989-04-04 Carl Pennypacker Infrared imager for viewing subcutaneous location of vascular structures and method of use
US4684983A (en) * 1986-07-31 1987-08-04 Rca Corporation Non-linear processor for reducing the dynamic range of a digitized error signal
JPH02111188A (ja) * 1988-10-20 1990-04-24 Toshiba Corp 画質改善装置
US5436882A (en) * 1993-01-04 1995-07-25 Taddeo; Anthony R. Method and device for improving digital audio sound
US6122767A (en) * 1993-06-03 2000-09-19 Texas Instruments Incorporated Method and apparatus for noise reduction of cyclic signal by selecting majority logic state of corresponding portions of plural cycles
US5603013A (en) * 1993-06-03 1997-02-11 Texas Instruments Incorporated Method and apparatus for noise reduction of cyclic signal by selecting majority logic state of corresponding portions of plural cycles
US6469741B2 (en) 1993-07-26 2002-10-22 Pixel Instruments Corp. Apparatus and method for processing television signals
DE4443284C2 (de) * 1993-12-08 1996-01-25 Rundfunkschutzrechte Ev Videosignalverarbeitungsschaltung
US5534947A (en) * 1994-05-16 1996-07-09 Motorola, Inc. Advanced comb filter
WO2000010054A1 (fr) * 1998-08-11 2000-02-24 Shepherd Mark S Procede de transfert video-film

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310692A (en) * 1939-06-16 1943-02-09 Rca Corp Method of and means for reducing multiple signals
DE1271161B (de) * 1963-10-09 1968-06-27 Fernseh Gmbh Verfahren und Einrichtung zur Vergroesserung des Stoerabstandes in UEbertragungssystemen fuer Fernsehsignale
GB1119261A (en) 1963-11-17 1968-07-10 Fujitsu Ltd Wave form equalizers
DE1287114B (de) * 1964-04-29 1969-01-16 Fernseh Gmbh Verfahren und Anordnung zur Verringerung der statistischen Stoerungen in einem Fernsehbild
GB1113223A (en) 1964-09-15 1968-05-08 Mini Of Technology Improvements in or relating to electric selective signalling systems
US3292110A (en) 1964-09-16 1966-12-13 Bell Telephone Labor Inc Transversal equalizer for digital transmission systems wherein polarity of time-spaced portions of output signal controls corresponding multiplier setting
US3432761A (en) * 1967-06-14 1969-03-11 Bendix Corp Method and electronic system for improving a control signal-to-noise ratio in high noise environment electronic systems
US3502986A (en) * 1967-12-14 1970-03-24 Bell Telephone Labor Inc Adaptive prediction for redundancy removal in data transmission systems
US3605019A (en) * 1969-01-15 1971-09-14 Ibm Selective fading transformer
CH505510A (de) * 1969-08-29 1971-03-31 Patelhold Patentverwertung Verfahren zur Mitübertragung der tiefen Signalfrequenzkomponenten eines Nachrichtensignals
US3648171A (en) * 1970-05-04 1972-03-07 Bell Telephone Labor Inc Adaptive equalizer for digital data systems
US3716678A (en) * 1970-11-09 1973-02-13 M Staar Apparatus for controlling advance of a record support and transverse displacement of a sensing head
GB1390341A (en) * 1971-03-12 1975-04-09 Dolby Laboratories Inc Signal compressors and expanders
US3716807A (en) * 1971-05-24 1973-02-13 Ibm Recursive automatic equalizer and method of operation therefore
US3772465A (en) * 1971-06-09 1973-11-13 Ass Of Motion Picture Televisi Image modification of motion pictures
US3752916A (en) * 1971-09-30 1973-08-14 Ellanin Investments Method and apparatus for improving the horizontal sharpness of electronically scanned images
US3752906A (en) * 1971-12-20 1973-08-14 Ellain Investments Ltd Video-to-film conversion process
US4107736A (en) * 1971-12-20 1978-08-15 Image Transform, Inc. Noise reduction system for video signals
US3715670A (en) * 1971-12-20 1973-02-06 Bell Telephone Labor Inc Adaptive dc restoration in single-sideband data systems
US3716670A (en) * 1971-12-20 1973-02-13 Ellanin Investments Comb effect elimination
US3804980A (en) * 1972-03-01 1974-04-16 Ellanin Investments Vertical sharpness enhancement of video pictures
US4090221A (en) * 1972-03-13 1978-05-16 Bell Telephone Laboratories, Incorporated Apparatus for improving video signal-to-noise ratio
GB1428963A (en) * 1972-04-04 1976-03-24 Dolby Laboratories Inc Circuits for modifying the dynamic range of signals
US3778543A (en) * 1972-09-05 1973-12-11 Ellanin Investments Predictive-retrospective method for bandwidth improvement
US4064530A (en) * 1976-11-10 1977-12-20 Cbs Inc. Noise reduction system for color television

Also Published As

Publication number Publication date
US4388729A (en) 1983-06-14
NL177964B (nl) 1985-07-16
GB1469101A (en) 1977-03-30
JPS5028220A (fr) 1975-03-22
NL7403958A (fr) 1974-09-25
NL177964C (nl) 1985-12-16
FR2222808A1 (fr) 1974-10-18
JPS6038914B2 (ja) 1985-09-03
DE2413799C2 (de) 1985-06-27
DE2413799A1 (de) 1974-10-17
CA1027240A (fr) 1978-02-28

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Legal Events

Date Code Title Description
CD Change of name or company name