METHODS AND SYSTEMS FOR INCREASING PSRR COMPENSATION RANGE IN IMAGE SENSOR

• Main Authors: KUMAR SANDEEP SANTHOSH, GOVINDARAJAN MADHUSUDAN, DUTTA PUSHPITA
• Format: Patent
• Language: Chinese; English
• Published: 23.02.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

A method for compensating a Power Supply Rejection Ratio (PSRR) in an image sensor, the method includes receiving, by processing circuitry, at least one analog signal from an active pixels sensor (APS) array, the at least one analog signal including power supply noise, combining, by the processing circuitry, amplified power supply noise with at least one ramp signal to obtain combined power supplynoise, and compensating, by the processing circuitry, the PSRR of the APS array by cancelling the power supply noise of the at least one analog signal using the combined power supply noise. 一种用于补偿图像传感器中的电源抑制比(PSRR)的方法，该方法包括：由处理电路从有源像素传感器(APS)阵列接收至少一个模拟信号，该至少一个模拟信号包括电源噪声；由处理电路将经放大的电源噪声与至少一个斜坡信号进行组合以获得经组合的电源噪声；以及由处理电路通过使用经组合的电源噪声而消除至少一个模拟信号的电源噪声来补偿APS阵列的PSRR。