High Dynamic Range Imaging Pixels With Improved Readout

The present invention relates to high dynamic range imaging pixels with improved readout. An imaging system may include an image sensor having an array of dual gain pixels. Each pixel may be operated by using an improved three read method and an improved four read method such that all signals are read in a high gain configuration in order to prevent electrical offset in signal levels. Each pixel may be operated by using an improved three read, two analog to digital conversion (ADC) method in which a frame buffer is used to store calibration data. Each pixel may be operated by using an improved three read, three ADC method in which no frame buffer is required. A high dynamic range image signal may be produced for each pixel based on signals read from the pixel and on light conditions. 本公开涉及具有改良读出的高动态范围成像像素。本发明提供了种成像系统，所述成像系统可包括具有双增益像素阵列的图像传感器。每个像素可使用改良三读出法和改良四读出法进行操作，使得所有信号以高增益配置读出，以便防止信号电平出现电气偏移。每个像素可使用改良三读出、双模数转换(ADC)法进行操作，其中使用帧缓冲器存储校准数据。每个像素可使用改良三读出、三ADC法进行操作，其中不需要帧缓冲器。高动态范围图像信号可以基于从所述像素读出的信号并且基于光照条件，针对每个像素