Back to results
US 9,438,837 B2Granted
Image sensor and image sensing system with redundant data
AssigneeCanon Kabushiki Kaisha
InventorToshiaki Ono
Life of this patent
Estimating the term…
Abstract
An image sensor including a pixel unit in which a plurality of pixels are arranged in a matrix, an A/D conversion circuit provided corresponding to each column of the matrix and configured to A/D-convert a pixel signal output from the pixel unit and output digital data corresponding to the pixel signal, a memory provided on each column, and a redundant data generation unit configured to generate redundant data based on a generating rule of an error correction code for the digital data, wherein the digital data and the redundant data are stored in the memory.
Claims12
An image sensor comprising:
- a pixel unit in which a plurality of pixels are arranged in a matrix;
- an A/D conversion circuit provided corresponding to each column of the matrix and configured to A/D-convert a pixel signal output from the pixel unit and output digital data corresponding to the pixel signal, the A/D conversion circuit including a comparator configured to compare the signal from the pixel with a reference signal;
- a counter circuit configured to count a reference clock and generate a count signal;
- a redundant data generation unit configured to generate redundant data for correcting the digital data by encoding the count signal based on a generating rule of an error correction code;
- and
- a memory configured to store the count signal as the digital signal and the redundant data in accordance with an output signal from the comparator.
3 more elements
An image sensing system comprising:
- an image sensor;
- and
- an image signal processing unit configured to generate image data by processing an output signal from the image sensor,
- wherein the image sensor comprises:
- a pixel unit in which a plurality of pixels are arranged in a matrix;
- an A/D conversion circuit provided corresponding to each column of the matrix and configured to A/D-convert a pixel signal output from the pixel unit and output digital data corresponding to the pixel signal, the A/D conversion circuit including a comparator configured to compare the signal from the pixel with a reference signal;
- a counter circuit configured to count a reference clock and generate a count signal;
- a redundant data generation unit configured to generate redundant data for correcting the digital data by encoding the count signal based on a generating rule of an error correction code;
- and
- a memory configured to store the count signal as the digital signal and the redundant data in accordance with an output signal from the comparator.
7 more elements
Dependencies are inferred from the claim text.