Controlling an exposure time for digital cameras

Details Controlling an exposure time for digital cameras Controlling an exposure time for digital cameras

2005-07-29

2008-09-23

Perkey, W. B. (Department: 2862)

Photography

With object illumination for exposure

Having preexposure illumination

C348S370000, C348S371000

Reexamination Certificate

active

07428378

ABSTRACT:
Various methods, apparatuses, and systems in which a digital photography device includes a global shutter to control exposure time, a sensor array, and a flash illumination are described. The global shutter is in the optical path of light going to the sensor. The flash illumination generates a pulsed illumination. The shutter speed of the global shutter during a pre-flash illumination substantially matches the shutter speed during the flash illumination during the taking of a picture using the flash illumination based on the global shutter receiving a trigger signal from a controller.

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