公开(公告)号：US09961338B2

公开(公告)日：2018-05-01

申请号：US15051678

申请日：2016-02-24

申请人： PixArt Imaging Inc.

发明人： Chien-Jung Chou ,  Mei-Chao Yeh ,  Wen-Cheng Yen

IPC分类号： H04N5/217 ,  H04N17/00 ,  H04N5/365 ,  H04N5/3745

CPC分类号： H04N17/002 ,  H04N5/3655 ,  H04N5/3658 ,  H04N5/3745

摘要： A method for reducing fixed pattern noise of an image sensor is provided. The method includes: accessing pixel data of at least one test frame in a test environment; and calculating/deriving average values of each column based on at least one portion of pixel data of the column in the at least one test frame, wherein the average values of columns are used as calibration values for calibrating image pixel data of columns when the image sensor operates in a normal light source environment.

公开(公告)号：US20170026596A1

公开(公告)日：2017-01-26

申请号：US15051678

申请日：2016-02-24

申请人： PixArt Imaging Inc.

发明人： Chien-Jung Chou ,  Mei-Chao Yeh ,  Wen-Cheng Yen

IPC分类号： H04N5/365 ,  H04N17/00

CPC分类号： H04N17/002 ,  H04N5/3655 ,  H04N5/3658 ,  H04N5/3745

摘要： A method for reducing fixed pattern noise of an image sensor is provided. The method includes: accessing pixel data of at least one test frame in a test environment; and calculating/deriving average values of each column based on at least one portion of pixel data of the column in the at least one test frame, wherein the average values of columns are used as calibration values for calibrating image pixel data of columns when the image sensor operates in a normal light source environment.

摘要翻译： 提供了一种用于降低图像传感器的固定图案噪声的方法。 该方法包括：在测试环境中访问至少一个测试帧的像素数据; 以及基于所述至少一个测试帧中的所述列的像素数据的至少一部分来计算/导出每列的平均值，其中，所述列的平均值用作校准所述列的图像像素数据的校准值 传感器在正常的光源环境中工作。

公开(公告)号：US10044949B2

公开(公告)日：2018-08-07

申请号：US15070161

申请日：2016-03-15

申请人： PIXART IMAGING INC.

发明人： Chien-Jung Chou ,  Han-Chi Liu ,  Wen-Cheng Yen

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

摘要： 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：US09244541B2

公开(公告)日：2016-01-26

申请号：US14301314

申请日：2014-06-10

申请人： PixArt Imaging Inc.

发明人： En-Feng Hsu ,  Ching-Wei Chen ,  Chien-Sheng Chen ,  Shuen-Yin Bai ,  Chien-Jung Chou

IPC分类号： G06F3/0354 ,  H01L27/146 ,  H04N5/359

CPC分类号： G06F3/03543 ,  G06F3/0317 ,  H01L27/14643 ,  H04N5/359

摘要： An image sensing apparatus comprises at least one sensing pixel and a control circuit. The sensing pixel comprises: a charge storing device; a light sensing device, for respectively generating photoelectrons with a first, second amount in a first, second mode; and a switch device, for determining an amount that the photoelectron can be transmitted to the charge storing device according to a control voltage. The control voltage generates the control voltage to control the amount that the photoelectrons can be transmitted to the charge storing device to be a first charge amount in a first mode and to be a second charge amount in a second mode. The first, second charge amounts are smaller than a maximum charge storing amount for the charge storing device.

摘要翻译： 图像感测装置包括至少一个感测像素和控制电路。 感测像素包括：电荷存储装置; 用于在第一，第二模式中分别产生具有第一，第二量的光电子的光感测装置; 以及用于根据控制电压确定光电子能够传送到电荷存储装置的量的开关装置。 控制电压产生控制电压，以控制光电子能够传输到电荷存储装置的量，使其成为第一模式中的第一充电量，并且在第二模式中为第二充电量。 第一，第二充电量小于电荷存储装置的最大电荷存储量。

公开(公告)号：US20150103009A1

公开(公告)日：2015-04-16

申请号：US14301314

申请日：2014-06-10

申请人： PixArt Imaging Inc.

发明人： En-Feng Hsu ,  Ching-Wei Chen ,  Chien-Sheng Chen ,  Shuen-Yin Bai ,  Chien-Jung Chou

IPC分类号： G06F3/0354

CPC分类号： G06F3/03543 ,  G06F3/0317 ,  H01L27/14643 ,  H04N5/359

摘要： An image sensing apparatus comprises at least one sensing pixel and a control circuit. The sensing pixel comprises: a charge storing device; a light sensing device, for respectively generating photoelectrons with a first, second amount in a first, second mode; and a switch device, for determining an amount that the photoelectron can be transmitted to the charge storing device according to a control voltage. The control voltage generates the control voltage to control the amount that the photoelectrons can be transmitted to the charge storing device to be a first charge amount in a first mode and to be a second charge amount in a second mode. The first, second charge amounts are smaller than a maximum charge storing amount for the charge storing device.

摘要翻译： 图像感测装置包括至少一个感测像素和控制电路。 感测像素包括：电荷存储装置; 用于在第一，第二模式中分别产生具有第一，第二量的光电子的光感测装置; 以及用于根据控制电压确定光电子能够传送到电荷存储装置的量的开关装置。 控制电压产生控制电压，以控制光电子能够传输到电荷存储装置的量，使其成为第一模式中的第一充电量，并且在第二模式中为第二充电量。 第一，第二充电量小于电荷存储装置的最大电荷存储量。