Patent Document ID: 9453730
Application ID: 13847939
Patent Flag: 1

Claim One:
1. A method useful in determining information of an analog image signal, the method comprising: forming an analog pixel voltage signal based on incoming light energy for each of a plurality of pixel elements of a pixel array comprising rows and columns of the pixel elements, the pixel elements each including a light sensor, wherein the formed analog pixel voltage signals represent the analog image signal indicative of an image of a scene; and obtaining a binary measurement signal of the analog image signal by: applying a sequence of sets of control signals to the rows, each of the sets of control signals being representative of a different vector of a sampling matrix comprising a product of a random basis function and a filtering function corresponding to a partial first derivative with respect to the rows, each of the sets having a number of control signals equal to the number of the rows, each ordinal control signal being applied to all pixel elements of an ordinal row on a corresponding control line, the control signals of each set selecting pixel elements on two or more of the rows, and each of the sets of control signals being uncorrelated with each other, for each set of control signals, summing, for each of the columns, analog pixel current signals, output based on the respective analog pixel voltage signals of pixel elements selected by an associated set of control signals, to obtain a pair of analog current output signals for each of the columns, wherein the summing comprises, for each column, coupling first ones of the analog pixel current signals, that, when summed, result in one of the analog current output signals of the pair associated with the column, to a first current output line for that column, and coupling second ones of the analog pixel current signals, that, when summed, result in the other one of the analog current output signals of the pair associated with the column, to a second current output line for that column, the first ones of the analog pixel current signals and the second ones of the analog pixel current signals being selected by the same set of control signals, and forming, for each column, a one-bit value that is representative of a relative magnitude of the analog current output signals of the pair associated with the column to determine a row of the binary measurement signal, and repeating the forming of the one-bit values to determine a row of the binary measurement signal for each of the sets of control signals of the sequence to obtain the binary measurement signal.