公开(公告)号：US09407850B2

公开(公告)日：2016-08-02

申请号：US14316282

申请日：2014-06-26

Applicant: Silicon Optronics, Inc.

Inventor： Xiaodong Luo

IPC: H04N5/335 ,  H04N5/378

CPC classification number: H04N5/378 ,  H04N5/335

Abstract: An image sensor is provided. The image sensor includes a pixel array, a sense amplifier, an analog-to-digital converter, a processor and a voltage generator. The sense amplifier obtains a first signal according to a pixel signal from the pixel array and a reference voltage, wherein the reference voltage has a first voltage level. The analog-to-digital converter converts the first signal into a first digital signal. The processor provides a feedback signal according to the first digital signal. The voltage generator adjusts the reference voltage to a second voltage level corresponding to the feedback signal. The sense amplifier removes a direct current (DC) bias voltage from the pixel signal according to the reference signal having the second voltage level.

Abstract translation: 提供图像传感器。 图像传感器包括像素阵列，读出放大器，模拟 - 数字转换器，处理器和电压发生器。 读出放大器根据来自像素阵列的像素信号和参考电压获得第一信号，其中参考电压具有第一电压电平。 模数转换器将第一信号转换成第一数字信号。 处理器根据第一数字信号提供反馈信号。 电压发生器将参考电压调整到与反馈信号对应的第二电压电平。 读出放大器根据具有第二电压电平的参考信号从像素信号中去除直流（DC）偏置电压。

公开(公告)号：US10264202B2

公开(公告)日：2019-04-16

申请号：US15843782

申请日：2017-12-15

Applicant: Silicon Optronics, Inc.

Inventor： Xiaodong Luo

IPC: H04N5/378 ,  H04N5/374

Abstract: A readout circuit is provided to generate an image datum representing an image sensed by a sensing array. The readout circuit includes a sample and hold circuit, an analog-digital conversion circuit, first and second memory banks, and an output circuit. The sample and hold circuit performs a sample and hold operation on at least one output signal from the sensing array to generate first and second sample-hold signals. The analog-digital conversion circuit generates first and second output datums according to the first and second sample-hold signals respectively. When the readout circuit operates in a first mode, the output circuit outputs the first and second output datums, received from the first and second memory banks, sequentially to serve as the image datum. When the readout circuit operates in a second mode, the output obtains difference between the first and second output datums to serve as the image datum.

公开(公告)号：US09350927B2

公开(公告)日：2016-05-24

申请号：US14324666

申请日：2014-07-07

Applicant: Silicon Optronics, Inc.

Inventor： Xiaodong Luo

IPC: H04N5/361 ,  H04N101/00

CPC classification number: H04N5/361 ,  H04N2101/00

Abstract: An image sensor is provided. The image sensor includes a pixel array, an analog-to-digital converter, and a processor. The analog-to-digital converter converts a black level reference signal and a pix signal from the pixel array into a first digital signal and a second digital signal, respectively. The processor obtains a black level reference value according to the first digital signal, and obtains a compensation coefficient according to the black level reference value, a maximum digital level of the analog-to-digital converter and a full signal range value. The processor obtains pix data according to the compensation coefficient, the black level reference value and the second digital signal.

Abstract translation: 提供图像传感器。 图像传感器包括像素阵列，模数转换器和处理器。 模数转换器将来自像素阵列的黑电平参考信号和像素信号分别转换成第一数字信号和第二数字信号。 处理器根据第一数字信号获得黑电平参考值，并根据黑电平参考值，模数转换器的最大数字电平和全信号范围值获得补偿系数。 处理器根据补偿系数，黑电平参考值和第二数字信号获得图像数据。