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发明授权
CN105374832B 用于飞行时间3D图像传感器的预充电经锁存像素单元 有权

用于飞行时间3D图像传感器的预充电经锁存像素单元
摘要：
本发明涉及一种用于飞行时间3D图像传感器的预充电锁存像素单元。一种像素单元包含锁存器，所述锁存器具有输入端子及输出端子。所述锁存器经耦合以响应于所述输入端子在所述输出端子处提供经锁存输出信号。第一预充电电路经耦合以在所述像素单元的复位期间将所述锁存器的所述输入端子预充电到第一电平。单光子雪崩光电二极管SPAD经耦合以响应于检测到入射在所述SPAD上的光子而将SPAD信号提供到所述锁存器的所述输入端子。
摘要（英）：

A pixel cell includes a latch having an input terminal and an output terminal. The latch is coupled to provide a latched output signal at the output terminal responsive to the input terminal. A first precharge circuit is coupled to precharge the input terminal of the latch to a first level during a reset of the pixel cell. A single photon avalanche photodiode (SPAD) is coupled to provide a SPAD signal to the input terminal of the latch in response to a detection of a photon incident on the SPAD.

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