CA1094214A - Negative gamma circuit - Google Patents

Negative gamma circuit

Info

Publication number
CA1094214A
CA1094214A CA257,810A CA257810A CA1094214A CA 1094214 A CA1094214 A CA 1094214A CA 257810 A CA257810 A CA 257810A CA 1094214 A CA1094214 A CA 1094214A
Authority
CA
Canada
Prior art keywords
gamma
signal
circuit
reference source
coupled
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.)
Expired
Application number
CA257,810A
Other languages
English (en)
French (fr)
Inventor
Harold G. Seer, Jr.
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
Application granted granted Critical
Publication of CA1094214A publication Critical patent/CA1094214A/en
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)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
CA257,810A 1975-08-06 1976-07-26 Negative gamma circuit Expired CA1094214A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB32842-75 1975-08-06
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
US661,616 1976-02-26

Publications (1)

Publication Number Publication Date
CA1094214A true CA1094214A (en) 1981-01-20

Family

ID=26261588

Family Applications (1)

Application Number Title Priority Date Filing Date
CA257,810A Expired CA1094214A (en) 1975-08-06 1976-07-26 Negative gamma circuit

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)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR837877A (fr) * 1937-05-12 1939-02-22 Fernseh Ag Procédé pour inverser les degrés de noircissement de films positifs ou négatifs
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
DE2635127A1 (de) 1977-02-10
FR2320674B1 (enrdf_load_stackoverflow) 1982-03-12
FR2320674A1 (fr) 1977-03-04
NL7608704A (nl) 1977-02-08
JPS5237710A (en) 1977-03-23

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Legal Events

Date Code Title Description
MKEX Expiry