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Controlling an exposure time for digital cameras

  • US 7,428,378 B1
  • Filed: 07/29/2005
  • Issued: 09/23/2008
  • Est. Priority Date: 07/29/2005
  • Status: Active Grant
First Claim
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1. A digital photography device, comprising:

  • a global shutter to control exposure time;

    a sensor array, wherein the global shutter is in an optical path of light going to the sensor array; and

    a flash to generate a pulsed illumination, wherein the shutter speed of the global shutter during a pre-flash illumination is timed to substantially match the shutter speed during the flash illumination when a picture is taken using the flash illumination based on the global shutter receiving a trigger signal from a controller.

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