公开(公告)号：US20150365586A1

公开(公告)日：2015-12-17

申请号：US14835503

申请日：2015-08-25

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Tiejun Dai ,  Eiichi Funatsu ,  Donghui Wu ,  Zheng Yang ,  Xiao Xie

IPC: H04N5/232 ,  H04N5/376 ,  H04N5/243 ,  H04N5/378

CPC classification number: H04N5/23212 ,  H04N5/243 ,  H04N5/3765 ,  H04N5/378

Abstract: A method of focusing an image sensor includes scanning a first portion of an image frame from an image sensor a first time at a first rate to produce first focus data. A second portion of the image frame from the image sensor is scanned at a second rate to read image data from the second portion. The first rate is greater than the second rate. The first portion of the image frame is scanned a second time at the first rate to produce second focus data. The first focus data and the second focus data are compared, and the focus of a lens is adjusted in response to the comparison of the first focus data and the second focus data.

Abstract translation: 聚焦图像传感器的方法包括以第一速率首先从图像传感器扫描图像帧的第一部分以产生第一焦点数据。 以第二速率扫描来自图像传感器的图像帧的第二部分，以从第二部分读取图像数据。 第一个比率大于第二个比率。 以第一速率第二次扫描图像帧的第一部分以产生第二焦点数据。 比较第一焦点数据和第二焦点数据，并且响应于第一焦点数据和第二焦点数据的比较来调整透镜的焦点。

公开(公告)号：US08816893B1

公开(公告)日：2014-08-26

申请号：US13765574

申请日：2013-02-12

Applicant: Omnivision Technologies, Inc.

Inventor： Zheng Yang

IPC: H03M1/56 ,  H04N5/378 ,  H03M1/00 ,  H04N5/335

CPC classification number: H03M1/007 ,  H03M1/0697 ,  H03M1/123 ,  H03M1/20 ,  H03M1/56 ,  H04N5/335

Abstract: An example ramp analog-to-digital converter (ADC) for generating at least one bit of a digital signal includes a modified ramp signal generator, a comparator, and a control circuit. The modified ramp signal generator receives a ramp signal and generates a modified ramp signal in response thereto. The comparator compares an analog input with the modified ramp signal. The control circuit controls the modified ramp signal generator, such that the analog input is converted a variable M number of times for each period of the ramp signal. The number M is dependent on a magnitude of the analog input. In one example, the number M is greater for analog inputs of a lower magnitude, such that the analog inputs of the lower magnitude are converted more times than analog inputs of a higher magnitude.

Abstract translation: 用于产生数字信号的至少一位的示例性斜坡模数转换器（ADC）包括修改的斜坡信号发生器，比较器和控制电路。 修改的斜坡信号发生器接收斜坡信号并响应于此产生修正的斜坡信号。 比较器将模拟输入与修改的斜坡信号进行比较。 控制电路控制修正的斜坡信号发生器，使得对于斜坡信号的每个周期，模拟输入被转换为可变M次。 数字M取决于模拟输入的幅度。 在一个示例中，数字M对于较低幅度的模拟输入较大，使得较低幅度的模拟输入比较高幅度的模拟输入更多的时间被转换。

公开(公告)号：US20140226050A1

公开(公告)日：2014-08-14

申请号：US14257832

申请日：2014-04-21

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Zheng Yang ,  Guangbin Zhang ,  Yuanbao Gu

IPC: H04N5/378

CPC classification number: H04N5/378 ,  H03M1/007 ,  H03M1/10 ,  H03M1/1009 ,  H03M1/1042 ,  H03M1/123 ,  H03M1/56 ,  H03M1/58 ,  H03M2201/2355 ,  H04N5/2175 ,  H04N5/357 ,  H04N5/3698 ,  H04N5/3745

Abstract: A method of an aspect includes acquiring analog image data with a pixel array, and reading out the analog image data from the pixel array. The analog image data is converted to digital image data by performing an analog-to-digital (A/D) conversion using a multiple slope voltage ramp. At least some of the digital image data is adjusted with calibration data. Other methods, apparatus, and systems, are also disclosed.

Abstract translation: 一个方面的方法包括以像素阵列获取模拟图像数据，并从像素阵列中读出模拟图像数据。 通过使用多个斜坡电压斜坡进行模数（A / D）转换，将模拟图像数据转换成数字图像数据。 用校准数据调整至少一些数字图像数据。 还公开了其它方法，装置和系统。