公开(公告)号：US06545707B1

公开(公告)日：2003-04-08

申请号：US09595914

申请日：2000-06-20

申请人： Russell Newcomb ,  Timothy Hu

发明人： Russell Newcomb ,  Timothy Hu

IPC分类号： H04N1700

CPC分类号： H04N17/00 ,  H04N5/16 ,  H04N7/102

摘要： In a video system in which a video signal source transmits a video signal to a receiver over a transmission line, a method of maintaining a desired voltage level from the video signal source includes the steps of monitoring the level of voltage at the output of the video signal source, and adjusting an input to the video signal source as necessary in order to maintain a desired level of voltage. Thus, when the impedance of the transmission line and receiver change, the output voltage from the video signal source is maintained at a desired level without clipping of the signal when the video signal source is overdriven.

摘要翻译： 在视频信号源通过传输线将视频信号发送到接收机的视频系统中，从视频信号源维持所需电压电平的方法包括以下步骤：监视视频输出端的电压电平 信号源，并且根据需要调整到视频信号源的输入，以便保持期望的电压电平。 因此，当传输线和接收器的阻抗改变时，视频信号源的输出电压在视频信号源被过载时保持在期望的水平，而不会削波信号。

公开(公告)号：US07733920B1

公开(公告)日：2010-06-08

申请号：US11904886

申请日：2007-09-28

申请人： Lei Wu ,  Timothy Hu

发明人： Lei Wu ,  Timothy Hu

IPC分类号： H04J3/04

CPC分类号： G06F13/4072 ,  H04L25/0292 ,  H04L25/03025

摘要： A high-speed serial ATA physical layer includes a serial ATA control circuit. A serial ATA multiplexer outputs one of a plurality of serial ATA signals that is selected by the serial ATA control circuit. A serial ATA analog front end provides a first gain and pre-emphasis to the selected one of the plurality of serial ATA signals. The pre-emphasis alters a transmission characteristic of the selected one of the plurality of serial ATA signals.

摘要翻译： 高速串行ATA物理层包括串行ATA控制电路。 串行ATA多路复用器输出由串行ATA控制电路选择的多个串行ATA信号之一。 串行ATA模拟前端向所选择的多个串行ATA信号中的一个提供第一增益和预加重。 预加重改变多个串行ATA信号中所选择的一个的传输特性。

公开(公告)号：US07319705B1

公开(公告)日：2008-01-15

申请号：US10277449

申请日：2002-10-22

申请人： Lei Wu ,  Timothy Hu

发明人： Lei Wu ,  Timothy Hu

IPC分类号： H04J3/04

CPC分类号： G06F13/4072 ,  H04L25/0292 ,  H04L25/03025

摘要： A high-speed serial ATA physical layer transmits data over a communications medium using a serial ATA protocol. A serial ATA control circuit controls operation of the serial ATA physical layer. A serial ATA multiplexer outputs a serial ATA signal and has a plurality of input lines for receiving input data and a control input that communicates with the serial ATA control circuit. A serial ATA analog front end includes a first differential driver that communicates with the serial ATA multiplexer and provides a first gain to the serial ATA signal and a serial ATA pre-emphasis circuit that provides pre-emphasis to the serial ATA signal to alter a transmission characteristic of the serial ATA signal.

摘要翻译： 高速串行ATA物理层使用串行ATA协议在通信介质上传输数据。 串行ATA控制电路控制串行ATA物理层的操作。 串行ATA多路复用器输出串行ATA信号，并具有用于接收输入数据的多条输入线和与串行ATA控制电路通信的控制输入。 串行ATA模拟前端包括与串行ATA多路复用器通信并向串行ATA信号提供第一增益的第一差分驱动器和为串行ATA信号提供预加重以改变传输的串行ATA预加重电路 串行ATA信号的特点。

公开(公告)号：US08311064B1

公开(公告)日：2012-11-13

申请号：US12792247

申请日：2010-06-02

申请人： Lei Wu ,  Timothy Hu

发明人： Lei Wu ,  Timothy Hu

IPC分类号： G06F13/40 ,  H04J3/04

CPC分类号： G06F13/4072 ,  H04L25/0292 ,  H04L25/03025

摘要： A transmitter including an analog front end configured to receive a serial signal; a control circuit configured to generate a first gain signal and a second gain signal based on a characteristic of a serial channel; a first amplifier is configured to amplify the serial signal to generate a first amplified signal based on the first gain signal; a first delay device configured to delay the serial signal to generate a first delayed signal; a second amplifier configured to amplify the first delayed signal to generate a second amplified signal based on the second gain signal; and at least one summer is configured to sum the first amplified signal and the second amplified signal to generate an output signal. The output signal is transmitted on the serial channel.

摘要翻译： 一种发射机，包括被配置为接收串行信号的模拟前端; 控制电路，被配置为基于串行通道的特性产生第一增益信号和第二增益信号; 第一放大器被配置为基于第一增益信号放大串行信号以产生第一放大信号; 第一延迟装置，被配置为延迟所述串行信号以产生第一延迟信号; 第二放大器，被配置为基于所述第二增益信号放大所述第一延迟信号以产生第二放大信号; 并且至少一个加法器被配置为对第一放大信号和第二放大信号求和以产生输出信号。 输出信号在串行通道上传输。