JPS6185981U - - Google Patents

Info

Publication number
JPS6185981U
JPS6185981U JP17034484U JP17034484U JPS6185981U JP S6185981 U JPS6185981 U JP S6185981U JP 17034484 U JP17034484 U JP 17034484U JP 17034484 U JP17034484 U JP 17034484U JP S6185981 U JPS6185981 U JP S6185981U
Authority
JP
Japan
Prior art keywords
circuit
logarithmic compression
photosensor
output
compression circuit
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
JP17034484U
Other languages
English (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 JP17034484U priority Critical patent/JPS6185981U/ja
Publication of JPS6185981U publication Critical patent/JPS6185981U/ja
Pending legal-status Critical Current

Links

Landscapes

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

Description

【図面の簡単な説明】
第1図は本考案に係る色センサー回路の1実施
例を示す回路図、第2図は従来の色センサー信号
処理回路、第3図は一組のホトダイオードの分光
感度特性を示すグラフである。 A′……ホトセンサー、B′……対数圧縮回路
、C′……減算回路、D……帰還回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 作動持の光電流の比が入射光の色温度と1対1
    に対応する感度の異なる少なくとも2個の光電変
    換素子からなるホトセンサーと、前記ホトセンサ
    ーの出力を対数変換する対数圧縮回路と、前記対
    数圧縮回路の出力の差電圧を出力する減算回路と
    、前記減算回路と前記対数圧縮回路との間に前記
    減算回路の出力の一部を前記対数圧縮回路に帰還
    する帰還回路とを設け、低い入射光量の場合に生
    じる出力変動を抑えるようにしたことを特徴とす
    る色センサー回路。
JP17034484U 1984-11-12 1984-11-12 Pending JPS6185981U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17034484U JPS6185981U (ja) 1984-11-12 1984-11-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17034484U JPS6185981U (ja) 1984-11-12 1984-11-12

Publications (1)

Publication Number Publication Date
JPS6185981U true JPS6185981U (ja) 1986-06-05

Family

ID=30728049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17034484U Pending JPS6185981U (ja) 1984-11-12 1984-11-12

Country Status (1)

Country Link
JP (1) JPS6185981U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63156491A (ja) * 1986-12-19 1988-06-29 Mitsubishi Electric Corp カラ−ビデオカメラ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63156491A (ja) * 1986-12-19 1988-06-29 Mitsubishi Electric Corp カラ−ビデオカメラ

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