JPS6425279U - - Google Patents

Info

Publication number
JPS6425279U
JPS6425279U JP11171487U JP11171487U JPS6425279U JP S6425279 U JPS6425279 U JP S6425279U JP 11171487 U JP11171487 U JP 11171487U JP 11171487 U JP11171487 U JP 11171487U JP S6425279 U JPS6425279 U JP S6425279U
Authority
JP
Japan
Prior art keywords
power
white balance
clock generation
signal
detection means
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
JP11171487U
Other languages
Japanese (ja)
Other versions
JPH0715249Y2 (en
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 filed Critical
Priority to JP1987111714U priority Critical patent/JPH0715249Y2/en
Publication of JPS6425279U publication Critical patent/JPS6425279U/ja
Application granted granted Critical
Publication of JPH0715249Y2 publication Critical patent/JPH0715249Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)
  • Color Television Image Signal Generators (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例である自動ホワイト
バランス調整回路２１の電気的構成を示すブロツ
ク図、第２図は電源投入時における各部の電圧レ
ベルの変化を示す波形図、第３図は従来技術の自
動ホワイトバランス調整回路１の電気的構成を示
すブロツク図である。 ２１……自動ホワイトバランス調整回路、２４
，２５……積分回路、２６，２７，４２……コン
パレータ、３０……カウンタ駆動回路、３３，３
４……カウンタ、３５，３６……Ｄ／Ａ変換器、
４０……分周器。 FIG. 1 is a block diagram showing the electrical configuration of an automatic white balance adjustment circuit 21 which is an embodiment of the present invention, FIG. 2 is a waveform diagram showing changes in voltage levels of various parts when the power is turned on, and FIG. 1 is a block diagram showing the electrical configuration of a conventional automatic white balance adjustment circuit 1. FIG. 21... Automatic white balance adjustment circuit, 24
, 25...Integrator circuit, 26, 27, 42...Comparator, 30...Counter drive circuit, 33, 3
4... Counter, 35, 36... D/A converter,
40... Frequency divider.

Claims (1)

【実用新案登録請求の範囲】 電源の投入状態を検出する電源投入検出手段と
、 前記電源投入検出手段の出力に応じて、発振周
波数が変化するクロツク発生手段と、 前記クロツク発生手段からのクロツク信号に対
応する動作速度でホワイトバランス制御信号を発
生する信号発生手段とを含むことを特徴とする自
動ホワイトバランス調整回路。[Claims for Utility Model Registration] Power-on detection means for detecting a power-on state; clock generation means whose oscillation frequency changes according to the output of the power-on detection means; and a clock signal from the clock generation means. and signal generating means for generating a white balance control signal at an operating speed corresponding to the automatic white balance adjustment circuit.
JP1987111714U 1987-07-20 1987-07-20 Automatic white balance adjustment circuit Expired - Lifetime JPH0715249Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987111714U JPH0715249Y2 (en) 1987-07-20 1987-07-20 Automatic white balance adjustment circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987111714U JPH0715249Y2 (en) 1987-07-20 1987-07-20 Automatic white balance adjustment circuit

Publications (2)

Publication Number Publication Date
JPS6425279U true JPS6425279U (en) 1989-02-13
JPH0715249Y2 JPH0715249Y2 (en) 1995-04-10

Family

ID=31350007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987111714U Expired - Lifetime JPH0715249Y2 (en) 1987-07-20 1987-07-20 Automatic white balance adjustment circuit

Country Status (1)

Country Link
JP (1) JPH0715249Y2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200990U (en) * 1981-06-16 1982-12-21
JPS60124190A (en) * 1983-12-08 1985-07-03 Seiko Epson Corp Video camera

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200990U (en) * 1981-06-16 1982-12-21
JPS60124190A (en) * 1983-12-08 1985-07-03 Seiko Epson Corp Video camera

Also Published As

Publication number Publication date
JPH0715249Y2 (en) 1995-04-10

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