公开(公告)号：US20080074156A1

公开(公告)日：2008-03-27

申请号：US11737777

申请日：2007-04-20

申请人： Ja-Won SEO ,  Seong-Min Seo

发明人： Ja-Won SEO ,  Seong-Min Seo

IPC分类号： H03B1/00

CPC分类号： H01S5/042 ,  H01S5/0427

摘要： Disclosed is a current driving type light source driving circuit in a CMOS optical transmitter, the current driving type light source driving circuit including a constant current source adjusted by bias voltage to supply operating current, first and second circuit units operating based on a differential input signal received from the constant current source and an external source, a light source for converting the input signal into an output optical signal and a load device for uniformly adjusting a load of the light source.

摘要翻译： 公开了一种CMOS光发射机中的电流驱动型光源驱动电路，该电流驱动型光源驱动电路包括通过偏置电压调节的恒流源以提供工作电流，第一和第二电路单元基于差分输入信号 从恒流源和外部源接收的光源，用于将输入信号转换为输出光信号的光源和用于均匀调整光源负载的负载装置。

公开(公告)号：US20110058067A1

公开(公告)日：2011-03-10

申请号：US12872550

申请日：2010-08-31

申请人： Ja-Won SEO ,  Hae-Sun Lee ,  Jong-Hyub Lee ,  Sung-Jun Yim

发明人： Ja-Won SEO ,  Hae-Sun Lee ,  Jong-Hyub Lee ,  Sung-Jun Yim

IPC分类号： H04N9/68

CPC分类号： H04N5/2351 ,  H04N5/23229 ,  H04N5/243

摘要： An apparatus and method for compensating for back light of an image are provided. The method includes receiving an image at a preset time interval, upon receiving the image, dividing pixels constituting the received image according to preset ranges, determining whether the received image is a back light image by confirming a distribution degree of pixels of each of the divided ranges, adjusting the brightness of the back light image when the received image is the back light image, and storing the received image and the back light compensated image.

摘要翻译： 提供一种用于补偿图像的背光的装置和方法。 该方法包括以预定的时间间隔接收图像，在接收到图像时，根据预设范围对构成接收图像的像素进行划分，通过确定所分割的每个图像的像素的分布程度，确定接收到的图像是否为背光图像 范围，当接收到的图像是背光图像时调整背光图像的亮度，并存储接收到的图像和背光补偿图像。

公开(公告)号：US20090051442A1

公开(公告)日：2009-02-26

申请号：US12193984

申请日：2008-08-19

申请人： Ja-Won SEO ,  Yun Ah SIM ,  Sang-Gug LEE

发明人： Ja-Won SEO ,  Yun Ah SIM ,  Sang-Gug LEE

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H03F1/083

摘要： A transimpedance amplifier circuit for an optical receiver in an optical communication system in which a range of an increase/decrease in bandwidth according to gain change is reduced by a bandwidth adjustor. The circuit includes: a photodiode (PD) for generating a current signal by photoelectric conversion of an input optical signal; a Transimpedance Amplifier (TIA) for converting the current signal input from the photodiode into a voltage signal; an auto gain adjustor for adjusting feedback resistances of the transimpedance amplifier; a photodiode parallel capacitor reducer for reducing a parallel capacitor current of the photodiode; and a bandwidth adjustor for reducing a range of an increase/decrease in bandwidth according to an increase/decrease in gain of the transimpedance amplifier.

摘要翻译： 一种用于光通信系统中的光接收机的跨阻放大器电路，其中通过带宽调节器减小根据增益变化的带宽增加/减小的范围。 该电路包括：用于通过输入光信号的光电转换产生电流信号的光电二极管（PD）; 用于将从光电二极管输入的电流信号转换为电压信号的跨阻抗放大器（TIA）; 用于调整跨阻放大器的反馈电阻的自动增益调节器; 用于减小光电二极管的并联电容电流的光电二极管并联电容器减速器; 以及带宽调整器，用于根据跨阻放大器的增益的增加/减小来减小带宽的增加/减小的范围。