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Video camera apparatus having solid state imager

  • US 5,283,655 A
  • Filed: 09/15/1992
  • Issued: 02/01/1994
  • Est. Priority Date: 09/30/1991
  • Status: Expired due to Term
First Claim
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1. A video camera apparatus comprising:

  • variable mode solid state imaging means for generating video signals and having an effective accumulating period, said video signals having voltage levels which are a function of the accumulating period,black level balance adjusting means for automatically adjusting black levels of said video signals;

    incident light control means for controlling the amount of light incident to said solid state imaging means;

    electronic shutter control means for varying the mode of said solid state imaging means between at least a first mode and a second mode, the effective accumulating period of said solid state imaging means in said first mode being of different temporal duration than the effective accumulating period in said second mode;

    comparator means for comparing the voltage level of the video signal obtained in said first mode with that obtained in said second mode; and

    processing means for controlling said electronic shutter control means and said comparator means, and for activating said black level balance adjusting means when the voltage levels of said video signals obtained in said first and said second modes are substantially the same.

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