Photography – Exposure control circuit – Shutter speed function only
Reexamination Certificate
2006-03-21
2009-02-24
Perkey, W. B. (Department: 2862)
Photography
Exposure control circuit
Shutter speed function only
C348S296000, C348S362000
Reexamination Certificate
active
07496291
ABSTRACT:
A digital camera takes interleaved photographs of two different kinds. In one example embodiment, the first kind of photograph is taken using a first set of pixels of the camera's electronic array light sensor and has a short exposure time. The second kind of photograph is taken using a second set of pixels and has a long exposure time. More than one of the short-exposure-time photographs is taken while each long-exposure-time photograph is exposed. The two kinds of photographs are used for different purposes. For example, one kind may be used for performing automatic focusing while the other kind is used for displaying in a live view display. In this way, live view may continue while automatic focusing is performed. In another embodiment, one kind of photograph is used for providing a live view display, and the other is used in selecting exposure settings for a final photograph.
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Bianchi Mark John
Bloom Daniel M.
Herrera E. Oscar R
Hofer Gregory V.
Thayer Jennifer J.
Hewlett--Packard Development Company, L.P.
Perkey W. B.
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