公开(公告)号：US20180309943A1

公开(公告)日：2018-10-25

申请号：US16023097

申请日：2018-06-29

Applicant: PixArt Imaging Inc.

Inventor： CHIEN-JUNG CHOU ,  Han-Chi Liu ,  Wen-Cheng Yen

IPC: H04N5/355 ,  H04N5/378 ,  H04N5/361

CPC classification number: H04N5/355 ,  H04N5/361 ,  H04N5/378

Abstract: A digital imaging device including a sensor array, an analog front end and a digital back end. The sensor array is configured to output black pixel data and normal pixel data. The analog front end is configured to amplify the black pixel data and the normal pixel data with a gain, and calibrate the amplified black pixel data and the amplified normal pixel data with a calibration value. The digital back end is configured to digitize the amplified and calibrated black pixel data, calculate a data offset according to digital black pixel data, determine a dynamic adjust scale, calculate the calibration value according to the gain, the data offset and the dynamic adjust scale, and adjust the gain according to the dynamic adjust scale.

公开(公告)号：US20160286142A1

公开(公告)日：2016-09-29

申请号：US15070161

申请日：2016-03-15

Applicant: PIXART IMAGING INC.

Inventor： CHIEN-JUNG CHOU ,  HAN-CHI LIU ,  WEN-CHENG YEN

IPC: H04N5/355 ,  H04N5/361 ,  H04N5/378 ,  H04N5/369

CPC classification number: H04N5/355 ,  H04N5/361 ,  H04N5/378

Abstract: A digital imaging device including a sensor array, an analog front end and a digital back end. The sensor array is configured to output black pixel data and normal pixel data. The analog front end is configured to amplify the black pixel data and the normal pixel data with a gain, and calibrate the amplified black pixel data and the amplified normal pixel data with a calibration value. The digital back end is configured to digitize the amplified and calibrated black pixel data, calculate a data offset according to digital black pixel data, determine a dynamic adjust scale, calculate the calibration value according to the gain, the data offset and the dynamic adjust scale, and adjust the gain according to the dynamic adjust scale.

Abstract translation: 一种数字成像装置，包括传感器阵列，模拟前端和数字后端。 传感器阵列被配置为输出黑色像素数据和正常像素数据。 模拟前端被配置为以增益放大黑色像素数据和正常像素数据，并用校准值校准放大的黑色像素数据和放大的法线像素数据。 数字后端被配置为数字化放大和校准的黑色像素数据，根据数字黑色像素数据计算数据偏移量，确定动态调整标度，根据增益，数据偏移和动态调整标度计算校准值 ，并根据动态调整比例调整增益。