Patent ID: 8982252
Filing Date: 2015-03-17
Classification: H04N

Abstract:
1. An image sensing apparatus comprising: a plurality of pixels arranged two dimensionally, wherein each pixel includes a dummy pixel, wherein the dummy pixel includes clamping circuits, each of which is provided for each column; a signal supply circuit that supplies the reset level of the dummy pixel as a reference signal to each of the clamping circuits; and a control unit that, in a case of collectively transferring the signal charge from the photoelectric converters to the first floating diffusion units, and then sequentially outputting a light signal corresponding to the signal charge accumulated in the first floating diffusion unit in each of the plurality of pixels by a predetermined number of lines, controls to supply the reset level of the second floating diffusion unit of the dummy pixel as the reference signal from the signal supply circuit to each of the clamping circuits at a first timing, output the light signal from each pixel to each of the clamping circuits at a second timing later than the first timing, clamp the light signal at the reference signal in each of the clamping circuits at a third timing later than the second timing, output the reset level of the first floating diffusion unit as a noise signal at a fourth timing later than the third timing, and then output a difference between the clamped light signal and the noise signal at a fifth timing later than the fourth timing.