JPS5643892A - Color image pickup unit - Google Patents

Color image pickup unit

Info

Publication number
JPS5643892A
JPS5643892A JP11968579A JP11968579A JPS5643892A JP S5643892 A JPS5643892 A JP S5643892A JP 11968579 A JP11968579 A JP 11968579A JP 11968579 A JP11968579 A JP 11968579A JP S5643892 A JPS5643892 A JP S5643892A
Authority
JP
Japan
Prior art keywords
circuits
gain control
signal
gain
control
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.)
Pending
Application number
JP11968579A
Other languages
Japanese (ja)
Inventor
Shoji Nishikawa
Yoshinori Kitamura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11968579A priority Critical patent/JPS5643892A/en
Publication of JPS5643892A publication Critical patent/JPS5643892A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To make it possible to prolong memory time, to reduce electric power consumption and to adjust white balance easily and accurately, by storing a digital circuit with the control signal of a gain control circuit for control over the gain of a color signal. CONSTITUTION:Red and blue signal systems are provided with gain control circuits 13a and 13b respectively and gains are controlled with the outputs of D/A converters 14a and 14b. The outputs of gain control circuits 13a and 13b are compared to the level of a green signal by deciding circuits 15a and 15b to determine the directions of increases or decreases of reversible counting circuits 16a and 16b composed of digital circuits, thereby generating control signals for gain control circuits 13a and 13b.
JP11968579A 1979-09-17 1979-09-17 Color image pickup unit Pending JPS5643892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11968579A JPS5643892A (en) 1979-09-17 1979-09-17 Color image pickup unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11968579A JPS5643892A (en) 1979-09-17 1979-09-17 Color image pickup unit

Publications (1)

Publication Number Publication Date
JPS5643892A true JPS5643892A (en) 1981-04-22

Family

ID=14767508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11968579A Pending JPS5643892A (en) 1979-09-17 1979-09-17 Color image pickup unit

Country Status (1)

Country Link
JP (1) JPS5643892A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176787U (en) * 1981-04-30 1982-11-09
JPS62143590A (en) * 1985-12-18 1987-06-26 Matsushita Electric Ind Co Ltd Color camera

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176787U (en) * 1981-04-30 1982-11-09
JPS62143590A (en) * 1985-12-18 1987-06-26 Matsushita Electric Ind Co Ltd Color camera

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