| 摘要 |
A solid state image pickup device may include a pixel unit that includes a photoelectric conversion element, the pixel unit including a plurality of pixels that are arranged in a form of a two-dimensional matrix in the pixel unit, each of the plurality of pixels outputting a reset signal and a pixel signal, an analog signal processing unit that includes a first capacitor and a second capacitor, a delay circuit that includes a plurality of delay elements that are connected in a ring form, an A/D converter that detects the number of stages in which the pulse signal has propagated through the delay elements in the delay circuit during a sampling time period and generates a digital signal based on the detected number of stages, and a switching circuit that switches a connection of the first capacitor. |
