FR2125564B1 - - Google Patents

Info

Publication number
FR2125564B1
FR2125564B1 FR7205385A FR7205385A FR2125564B1 FR 2125564 B1 FR2125564 B1 FR 2125564B1 FR 7205385 A FR7205385 A FR 7205385A FR 7205385 A FR7205385 A FR 7205385A FR 2125564 B1 FR2125564 B1 FR 2125564B1
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
FR7205385A
Other versions
FR2125564A1 (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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of FR2125564A1 publication Critical patent/FR2125564A1/fr
Application granted granted Critical
Publication of FR2125564B1 publication Critical patent/FR2125564B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)
FR7205385A 1971-02-19 1972-02-17 Expired FR2125564B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11701671A 1971-02-19 1971-02-19

Publications (2)

Publication Number Publication Date
FR2125564A1 FR2125564A1 (fr) 1972-09-29
FR2125564B1 true FR2125564B1 (fr) 1974-10-18

Family

ID=22370556

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7205385A Expired FR2125564B1 (fr) 1971-02-19 1972-02-17

Country Status (8)

Country Link
US (1) US3684825A (fr)
JP (1) JPS5134256B1 (fr)
AU (1) AU3891672A (fr)
CA (1) CA942881A (fr)
DE (1) DE2207536C3 (fr)
FR (1) FR2125564B1 (fr)
GB (1) GB1387302A (fr)
NL (1) NL173232C (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5136134B2 (fr) * 1971-11-27 1976-10-06
US4057828A (en) * 1975-11-17 1977-11-08 Harris Corporation Contrast compression circuits
GB1524720A (en) * 1976-09-16 1978-09-13 Marconi Co Ltd Contrast correction arrangements
DE2921246A1 (de) * 1979-05-25 1980-12-04 Bosch Gmbh Robert Verfahren und schaltung zur kontrastkorrektur von farbfernsehsignalen
US4366440A (en) * 1980-10-31 1982-12-28 Rca Corporation Adjustable contrast compressor
US4549231A (en) * 1981-05-11 1985-10-22 Victor Company Of Japan, Ltd. Signal reproducing apparatus having means for modifying a pre-recorded control signal
FR2506549A1 (fr) * 1981-05-22 1982-11-26 Thomson Csf Dispositif de correction des informations couleur fournies par les tubes analyseurs d'une camera en vue d'ameliorer la perception des images
GB2126828B (en) * 1982-09-09 1987-01-14 Link Electronics Ltd Camera tube aperture compensation
FR2538983B1 (fr) * 1982-12-30 1986-02-07 Guichard Jacques Procede de correction de couleur applicable a la prise de vues video et systeme mettant en oeuvre ce procede
DE3326272C1 (de) * 1983-07-21 1985-04-18 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth Verfahren und Schaltungsanordnung zur Verbesserung der Qualitaet eines Fernsehbildes
JPH06101807B2 (ja) * 1984-08-10 1994-12-12 ソニー株式会社 撮像信号の圧縮回路
FR2575884B1 (fr) 1985-01-08 1988-07-08 Thomson Video Equip Dispositif pour reduire la dynamique de trois signaux de couleur representant une image
JPS627290A (ja) * 1985-07-04 1987-01-14 Fuji Photo Film Co Ltd カラ−ネガフイルム撮像における階調補正方法および装置
FR2596941B1 (fr) * 1986-04-04 1988-06-17 Sfena Procede et dispositif de correction gamma pour tube cathodique multichrome
GB2211045B (en) * 1987-10-10 1991-08-21 Marconi Co Ltd Linearity adjusting circuit
US5068718A (en) * 1988-11-04 1991-11-26 Fuji Photo Film Co., Ltd. Image quality correcting system for use with an imaging apparatus
JP2509346B2 (ja) * 1989-10-30 1996-06-19 池上通信機株式会社 カラ―テレビジョン映像処理装置
JPH0437263A (ja) * 1990-05-31 1992-02-07 Matsushita Electric Ind Co Ltd 階調補正装置
US5633662A (en) * 1992-08-05 1997-05-27 Hewlett-Packard Company Ink limiting in ink jet printing systems
JP3647052B2 (ja) * 1993-04-15 2005-05-11 キヤノン株式会社 撮像装置
US6677959B1 (en) 1999-04-13 2004-01-13 Athentech Technologies Inc. Virtual true color light amplification
US6961066B2 (en) * 1999-04-13 2005-11-01 Athentech Technologies, Inc. Automatic color adjustment for digital images
DE60005332T2 (de) * 1999-04-13 2004-06-17 Athentech Technologies Inc., Calgary Virtuelle wahrheitsgetreue farblichtverstärkung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627547A (en) * 1948-04-29 1953-02-03 Rca Corp Gamma control
US2937231A (en) * 1954-03-17 1960-05-17 Westinghouse Electric Corp Color television receiver
BE570503A (fr) * 1957-08-21

Also Published As

Publication number Publication date
JPS5134256B1 (fr) 1976-09-25
DE2207536A1 (de) 1972-08-31
AU477054B2 (fr) 1976-10-14
NL173232C (nl) 1983-12-16
US3684825A (en) 1972-08-15
NL7202182A (fr) 1972-08-22
GB1387302A (en) 1975-03-12
FR2125564A1 (fr) 1972-09-29
AU3891672A (en) 1973-08-16
DE2207536C3 (de) 1975-01-23
CA942881A (en) 1974-02-26
DE2207536B2 (de) 1974-06-12

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Legal Events

Date Code Title Description
ST Notification of lapse