Pixel unit circuit, signal acquisition device and signal acquisition method

• Main Authors: FENG HONGQING, LI YUPENG, WANG LONG
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The embodiment of the invention provides a pixel unit circuit, a signal acquisition device and a signal acquisition method, relates to the field of image sensors, and is used for solving the problems that an image sensor is high in working frequency, large in power consumption and small in dynamic range when a target signal generated by the image sensor is read out. The technical effects of reducing the working frequency and improving the dynamic range are achieved. The signal generation circuit generates a photoelectric signal and a reset signal, the signal holding circuit firstly stores the photoelectric signal and then generates a target signal based on the reset signal and the stored photoelectric signal, the voltage of the target signal is the difference Vreset-Vsignal between the voltage of the photoelectric signal and the voltage of the reset signal, and the signal reading circuit reads the target signal. The embodiment of the invention is used in the process of reading the target signal generated by t