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US 6,587,603 B1Granted
Sensor unit capable of outputting image signals by blocks and processing circuit which processes image signals by blocks
AssigneeCanon Kabushiki Kaisha
InventorsKatsuhito Sakurai, Shigetoshi Sugawa, Isamu Ueno, Katsuhisa Ogawa, Toru Koizumi, Tetsunobu Kochi
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Abstract
Control to read signals from a sensor unit having a plurality of pixels by pixel blocks of a predetermined size, and the read signals are applied an operation to acquire distinctive information by pixel blocks of the predetermined size. The calculated distinctive information is applied to signal processes, such as signal compression, performed by a block.
Claims18
An image sensing device comprising:
- a sensor unit having a plurality of pixels arranged in two dimensions, wherein said pixels are divisible into a plurality of two-dimensional pixel blocks of a first predetermined size;
- a plurality of capacitors, the number of which is less than the number of said pixels;
- a controller adapted to independently transfer signals of a said pixel block from said sensor unit to said plurality of capacitors, and to transfer the signals in said capacitors simultaneously before signals of a next pixel block are transferred to said capacitors;
- and
- a signal processor adapted to independently input signals of a said pixel block from said capacitors in parallel and calculate an address of a pixel with a distinctive value for each pixel block of the first predetermined size,
- wherein said sensor unit, said capacitors, said controller and said signal processor are formed on a single IC chip.
3 more elements
An image sensing device comprising:
- a sensor unit having a plurality of pixels arranged in two dimensions, wherein said pixels are divisible into a plurality of two-dimensional pixel blocks of a first predetermined size;
- a plurality of capacitors, the number of which is less than the number of said pixels;
- a controller adapted to independently transfer signals of a said pixel block from said sensor unit to said plurality of capacitors, and to transfer the signals in said capacitors simultaneously before signals of a next pixel block are transferred to said capacitors;
- and
- a signal processor adapted to independently input signals of a said pixel block from said capacitors in parallel and calculate a difference between a plurality of distinctive values for each pixel block of the predetermined size,
- wherein said plurality of distinctive values are signals of different pixels in each pixel block, and
- wherein said sensor unit, said capacitors, said controller and said signal processor are formed on a single IC chip.
4 more elements
An image sensing device comprising:
- a sensor unit having a plurality of pixels arranged in two dimensions, wherein said pixels are divisible into a plurality of two-dimensional pixel blocks of a first predetermined size;
- a plurality of capacitors, the number of which is less than the number of said pixels;
- a controller adapted to independently transfer signals of a said pixel block from said sensor unit to said plurality of capacitors, and to transfer the signals in said capacitors simultaneously before signals of a next pixel block are transferred to said capacitors;
- and
- a signal processor adapted to independently input signals of a said pixel block from said capacitors in parallel, calculate distinctive information and perform operation between the distinctive information and each pixel in each pixel block of the first predetermined size,
- wherein said sensor unit, said capacitors, said controller and said signal processor are formed on a single IC chip.
3 more elements
An image sensing device comprising:
- a sensor unit having a plurality of pixels arranged in two dimensions, wherein said pixels are divisible into a plurality of two-dimensional pixel blocks of a first predetermined size;
- a plurality of capacitors, the number of which is less than the number of said pixels;
- a controller adapted to independently transfer signals of a said pixel block from said sensor unit to said plurality of capacitors, and to transfer the signals in said capacitors simultaneously before signals of a next pixel block are transferred to said capacitors;
- and
- a signal processor adapted to independently input signals of a said pixel block from said capacitors in parallel and calculate an output level of a pixel outputting a distinctive value for each pixel block of the first predetermined size,
- wherein said sensor unit, said capacitors, said controller and said signal processor are formed on a single IC chip.
3 more elements
Dependencies are inferred from the claim text.