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US 6,646,245 B2Granted
Focal plane averaging implementation for CMOS imaging arrays using a split photodiode architecture
AssigneeIntel Corporation
InventorRaj Nair
Life of this patent
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Abstract
A photosensor structure including pixel areas. Each pixel area represents an electrical pixel. The photosensor structure also has a predetermined number of quadrants. Each is positioned in a corner of one of the pixel areas. Each quadrant belongs to different optical pixels.
Claims7
A system comprising:
- an imaging device comprising:
- a plurality of photo-sensing devices arranged into Quadrants to form an array;
- and
- a circuit to generate a plurality of pixel signals each being a focal plane average of signals generated by said Quadrants of photo-sensing devices, wherein said circuit comprises:
- a first switching device to simultaneously transmit changes to said quadrants of photo-sensing devices to form said pixel signal;
- a storage node to store said pixel signal;
- a second switching device to selectively couple said quadrant of photo-sensing devices to said storage node;
- a third switching device to selectively couple said storage node to a bitline;
- and
- a interpolator to generate a color value from each of said pixel signal.
7 more elements
Dependencies are inferred from the claim text.