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US 7,030,920 B1Granted
Image pickup apparatus using a selector circuit
AssigneeCanon Kabushiki Kaisha
InventorsHidetoshi Hayashi, Seiji Hashimoto, Osamu Yuki, Toshiaki Endo
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Abstract
A selector circuit having a shift register for sequentially outputting a select pulse and a decoder circuit for designating a desired block of a plurality of blocks divided from the scan circuit, so as to allow the scan circuit to start to output the select pulse from a head position in the designated desired block.
Claims4
An image pickup apparatus comprising:
- a sensor portion including a plurality of pixels;
- an optical black portion including a plurality of optical black pixels;
- a scanning circuit effecting scanning for reading out signals of said sensor portion and said optical black portion;
- and
- a decoder for dividing said scanning circuit into a plurality of blocks and controlling said scanning circuit to cause scanning to start at a desired one of the plurality of blocks,
- wherein said decoder includes a latch circuit to which a start signal is input corresponding to the block at which said scanning circuit starts to scan, and
- wherein said scanning circuit is arranged to start the scanning for said optical black portion and is also arranged to input said start signal to said latch circuit to instruct said decoder to start the control of said scanning circuit to scan said sensor portion.
4 more elements
Dependencies are inferred from the claim text.