Pixel structure and reset scheme

摘要

An image sensor that includes a pixel array with image pixels with conditional reset circuitry. The pixels can be reset by a combination of row select and column reset signals, which implements the reset function while minimizing the number of extra signal lines. The pixels may also include pinned photodiodes. The manner in which the pinned photodiodes are used reduces noise and allows the quantization of the pixel circuits to be programmable.

主权项

1. A pixel circuit of an image sensor, comprising:
at least one photodetecting section; a signal node coupled to the at least one photodetecting section; a reset element to reset the signal node; and a row-enabled switch to pass or not pass, depending on a state of a row signal, a column reset signal to the reset element.