Patent ID: 8451354
Filing Date: 2013-05-28
Classification: H04N

Abstract:
1. An time-delay-integration image sensor comprising: a matrix of photosensitive pixels organized in rows and columns; a first analog-to-digital converter for each column, receiving via a column bus the outputs of the pixels of the column, belonging to a first part of the pixel matrix; a first memory cell matrix connected to receive the outputs of the first converters; and a second analog-to-digital converter for each column, receiving via a column bus the outputs of the pixels of the column, belonging to a second part of the pixel matrix, distinct from the first part; a second memory cell matrix connected to receive the outputs of the second converters; a control circuit configured to organize read of the pixels on the column busses and write of the outputs of the first and second converters respectively in the first and second memory cell matrices so as to store the accumulated brightness levels of the rows of a first part of the pixel matrix in a row of the first memory cell matrix and store the accumulated brightness levels of the rows of the second part of the pixel matrix in a row of the second memory cell matrix; and an adder connected to sum the levels accumulated in a row of the first memory cell matrix with the levels accumulated in a corresponding row of the second memory cell matrix.