FR2320674A1 - Circuit de correction de gamma negatif - Google Patents

Circuit de correction de gamma negatif

Info

Publication number
FR2320674A1
FR2320674A1 FR7623947A FR7623947A FR2320674A1 FR 2320674 A1 FR2320674 A1 FR 2320674A1 FR 7623947 A FR7623947 A FR 7623947A FR 7623947 A FR7623947 A FR 7623947A FR 2320674 A1 FR2320674 A1 FR 2320674A1
Authority
FR
France
Prior art keywords
reference signal
negative gamma
signal
correction circuit
gamma correction
Prior art date
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.)
Granted
Application number
FR7623947A
Other languages
English (en)
French (fr)
Other versions
FR2320674B1 (enrdf_load_stackoverflow
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
Priority claimed from GB32842/75A external-priority patent/GB1549769A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2320674A1 publication Critical patent/FR2320674A1/fr
Application granted granted Critical
Publication of FR2320674B1 publication Critical patent/FR2320674B1/fr
Granted 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)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
FR7623947A 1975-08-06 1976-08-05 Circuit de correction de gamma negatif Granted FR2320674A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB32842/75A GB1549769A (en) 1975-08-06 1975-08-06 Negative gamma circuit
US05/661,616 US4018988A (en) 1975-08-06 1976-02-26 Negative gamma circuit

Publications (2)

Publication Number Publication Date
FR2320674A1 true FR2320674A1 (fr) 1977-03-04
FR2320674B1 FR2320674B1 (enrdf_load_stackoverflow) 1982-03-12

Family

ID=26261588

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7623947A Granted FR2320674A1 (fr) 1975-08-06 1976-08-05 Circuit de correction de gamma negatif

Country Status (5)

Country Link
JP (1) JPS5237710A (enrdf_load_stackoverflow)
CA (1) CA1094214A (enrdf_load_stackoverflow)
DE (1) DE2635127A1 (enrdf_load_stackoverflow)
FR (1) FR2320674A1 (enrdf_load_stackoverflow)
NL (1) NL7608704A (enrdf_load_stackoverflow)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB514650A (en) * 1937-05-12 1939-11-14 Fernseh Ag Improvements in or relating to television or like systems
GB649779A (en) * 1947-11-21 1951-01-31 Mini Of Supply Improvements in or relating to electronic multiplying and dividing means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB514650A (en) * 1937-05-12 1939-11-14 Fernseh Ag Improvements in or relating to television or like systems
GB649779A (en) * 1947-11-21 1951-01-31 Mini Of Supply Improvements in or relating to electronic multiplying and dividing means

Also Published As

Publication number Publication date
JPS5628428B2 (enrdf_load_stackoverflow) 1981-07-01
DE2635127C3 (enrdf_load_stackoverflow) 1979-09-20
DE2635127B2 (enrdf_load_stackoverflow) 1979-01-25
CA1094214A (en) 1981-01-20
DE2635127A1 (de) 1977-02-10
FR2320674B1 (enrdf_load_stackoverflow) 1982-03-12
NL7608704A (nl) 1977-02-08
JPS5237710A (en) 1977-03-23

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Legal Events

Date Code Title Description
ST Notification of lapse