Patent ID: 8416339

Claim:
A capture device to capture a stream of images to produce a video signal corresponding to a particular image scene, the capture device comprising: a two-dimensional image sensor having a plurality of pixels; circuitry coupled to the two-dimensional image sensor to: (a) read a first group of pixels from the image sensor at a first frame rate to produce a first video signal of the particular image scene that is used to produce the video signal; (b) while reading the first group of pixels, read a second group of pixels from the image sensor that are different from the first group of pixels at a second frame rate to produce a second video signal of at least a portion of the particular image scene, wherein the first group of pixels surrounds on all sides the second group of pixels; (c) use the second video signal for adjusting one or more capture device parameters wherein the one or more capture device parameters effect a change in at least the first group of pixels; and (d) repeat (a) through (c) while capturing the stream of images to produce the video signal.