Electronic shutter for a CCD image sensor

  • US 4,875,100 A
  • Filed: 10/21/1987
  • Issued: 10/17/1989
  • Est. Priority Date: 10/23/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. An electronic shutter for a CCD image sensor, comprising:

  • a CCD imager device having a semiconductor substrate of a first conductivity type, a region of a second conductivity type formed upon said semiconductor substrate of said first conductivity type, a signal charge accumulating region formed on a surface side of said region of a second conductivity type; and

    means for applying a predetermined voltage to said semiconductor substrate of said first conductivity type within a horizontal blanking period to thereby discharge signal charges accumulated in said signal charge accumulating region to said semiconductor substrate of said first conductivity type within the horizontal blanking period.

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