Patent ID: 7068312

Claim:
A solid-state image-sensing device comprising: a plurality of pixels arranged in a matrix and each generating an electric signal proportional to an amount of incident light; a plurality of selector circuits provided one for each column of the matrix of the pixels and each having a non-differential buffer, the selector circuits each receiving, from a plurality of pixels belonging to a corresponding column of the matrix, image signals and noise signals representing variations in sensitivity and then outputting the image signals and the noise signals alternately through the buffer, the selector circuits each including: a first holding circuit for sampling and holding the image signals output from the pixels; and a second holding circuit for sampling and holding the noise signals output from the pixels; wherein, in each selector circuit, the image signals and the noise signals are first sampled and held in the first and second holding circuits respectively, and are then alternately fed through the buffer, and a correction circuit receiving the image signals and the noise signals sequentially from one selector circuit after another and correcting the image signals on a basis of the noise signals, the correction circuit including: a third holding circuit for sampling and holding the image signals output from the first holding circuits provided in the selector circuits; a fourth holding circuit for sampling and holding the noise signals output from the second holding circuits provided in the selector circuits; and a differential amplifier for outputting the image signals after correcting the image signals by subtracting the noise signals output from the fourth holding circuit from the image signals output from the third holding circuit.