公开(公告)号：JP2008005486A

公开(公告)日：2008-01-10

申请号：JP2007158160

申请日：2007-06-15

Applicant: Rgb Systems Inc ,  アールジービー・システムズ,インコーポレイテッド

Inventor： HALL RAYMOND WILLIAM ,  PARRECO DONALD E

IPC: H04B3/04

CPC classification number: H04N5/38 ,  H04N7/108 ,  H04N17/00

Abstract: PROBLEM TO BE SOLVED: To automatically compensate for signal losses that occur for video signals transmitted over appreciable distances via conductors including twisted-pair cables.
SOLUTION: A reference signal having a known form and strength (e.g., a pulse signal) is provided to each pair of conductors carrying a component of a video signal from a transmitter to a receiver. The receiver includes adjustable gain amplifiers for each conductor pair over which a component of the video signal is transmitted. The gains of the amplifiers are initially set at an initial level (e.g., their maximum gain) to enable detection of the reference signal. Once the reference signal is detected in a conductor pair, the amplifier gains are adjusted such that the level of the reference signal is restored approximately to its original form and strength. The apparatus for the automatic compensation is particularly applicable to the transmission of video over long lengths of CAT-5 or similar twisted-pair cables.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：自动补偿通过包括双绞线电缆的导体在可观距离上传输的视频信号发生的信号损失。 解决方案：具有已知形式和强度的参考信号（例如，脉冲信号）被提供给承载来自发射机到接收机的视频信号分量的每对导体。 接收机包括用于每个导体对的可调增益放大器，在该导体对上传输视频信号的分量。 放大器的增益最初设置在初始电平（例如，它们的最大增益），以使得能够检测参考信号。 一旦在导体对中检测到参考信号，则调整放大器增益，使得参考信号的电平大致恢复到其原始形式和强度。 用于自动补偿的装置特别适用于CAT-5或类似双绞线电缆长时间传输视频。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：MX2007004853A

公开(公告)日：2008-11-06

申请号：MX2007004853

申请日：2007-04-23

Applicant: RGB SYSTEMS INC

Inventor： HALL RAYMOND WILLIAM ,  PARRECO DONALD E

IPC: H04B3/04

Abstract: Un método y aparato para compensación automática de pérdida de inserción en señales de video transmitidas sobre conductores es presentada. La presente invención es particularmente aplicable a la transmisión de video sobre longitudes largas de cable CAT-5 o cables dobles torcidos similares. Una señal de referencia teniendo una resistencia y forma conocida (e.g. una señal de impulso) es proporcionada para cada par de conductores transportando un componente de señal de video desde un transmisor a un receptor. El receptor incluye amplificadores de ganancia ajustables para cada par conductor sobre el cual un componente de la señal de video es transmitido. La ganancia de los amplificadores es fijada inicialmente a un nivel inicial (e.g., su ganancia máxima) para permitir la detección de una señal de referencia. Una vez que la señal de referencia es detectada en un par conductor las ganancias del amplificador son ajustadas de manera que el nivel de la señal de referencia es restaurada aproximadamente a su resistencia y forma original.

公开(公告)号：MX2009004932A

公开(公告)日：2009-07-15

申请号：MX2009004932

申请日：2007-11-06

Applicant: RGB SYSTEMS INC

Inventor： HALL RAYMOND WILLIAM ,  PARRECO DONALD E ,  COLE GARY DEAN

IPC: H04N11/06 ,  H04N5/38 ,  H04N7/04

Abstract: Un sistema capaz de transmitir y recibir señales de vídeo de alta frecuencia en las distintas longitudes de cable de par trenzado es presentado mientras se mantiene la calidad de video. El sistema incluye un transmisor y un tándem receptor acoplado junto sobre cable de par trenzado. Cada componente de vídeo se mezcla con una señal de referencia en el transmisor e impulsados diferencialmente en el cable de par trenzado. Tras la detección de una señal en el cable de par trenzado, el receptor ajusta su ganancia interior hasta que la característica conocida de referencia de señal se consigue. El receptor entonces ajusta automáticamente la compensación DC & torcido. Por lo tanto, el receptor es capaz de medir automáticamente la degradación en la calidad de vídeo y compensar adecuadamente las señales de vídeo para el degradación acumulada causada principalmente por la transmisión entre el transmisor y el receptor. El video compensado posteriormente se proporcionará a un aparato de reproducción de vídeo.

公开(公告)号：CA2669259A1

公开(公告)日：2008-05-15

申请号：CA2669259

申请日：2007-11-06

Applicant: RGB SYSTEMS INC

Inventor： PARRECO DONALD E ,  COLE GARY DEAN ,  HALL RAYMOND WILLIAM

IPC: H04N11/06

Abstract: A system capable of transmitting and receiving high frequency video signa ls across various lengths of a twisted pair cable while maintaining video qu ality is presented. The system includes a transmitter and a receiver tandem coupled together over twisted pair cable. Each video component is mixed with a reference signal in the transmitter and driven differentially onto the tw isted pair cable. Upon detection of a signal in the twisted pair cable, the receiver adjusts its internal gains until the known characteristic of the re ference signal is achieved. The receiver then automatically adjusts the skew & DC offset. Thus, the receiver is able to automatically measure the de gradation in video quality and appropriately compensate the video signals fo r the accumulated degradation caused primarily by the transmission between t he transmitter and the receiver. The compensated video may subsequently be p rovided to a video display device.

公开(公告)号：WO2008057531A2

公开(公告)日：2008-05-15

申请号：PCT/US2007023356

申请日：2007-11-06

Applicant: RGB SYSTEMS INC ,  HALL RAYMOND WILLIAM ,  COLE GARY DEAN ,  PARRECO DONALD E

Inventor： HALL RAYMOND WILLIAM ,  COLE GARY DEAN ,  PARRECO DONALD E

IPC: H04N11/06 ,  H04N5/38 ,  H04N7/04

CPC classification number: H04N7/108 ,  H04B3/10 ,  H04L25/0272 ,  H04L25/0296

Abstract: A system capable of transmitting and receiving high frequency video signals across various lengths of a twisted pair cable while maintaining video quality is presented. The system includes a transmitter and a receiver tandem coupled together over twisted pair cable. Each video component is mixed with a reference signal in the transmitter and driven differentially onto the twisted pair cable. Upon detection of a signal in the twisted pair cable, the receiver adjusts its internal gains until the known characteristic of the reference signal is achieved. The receiver then automatically adjusts the skew & DC offset. Thus, the receiver is able to automatically measure the degradation in video quality and appropriately compensate the video signals for the accumulated degradation caused primarily by the transmission between the transmitter and the receiver. The compensated video may subsequently be provided to a video display device.

Abstract translation: 介绍了能够在保持视频质量的同时在不同长度的双绞线电缆上发送和接收高频视频信号的系统。 该系统包括通过双绞线电缆连接在一起的发射器和接收器。 每个视频组件都与发送器中的参考信号混合并差分驱动到双绞线上。 在检测到双绞线电缆中的信号时，接收器调整其内部增益，直到达到参考信号的已知特性。 接收器然后自动调整偏移和直流偏移。 因此，接收机能够自动测量视频质量的下降，并适当地补偿视频信号中主要由发射机和接收机之间的传输引起的累积恶化。 补偿的视频可以随后被提供给视频显示设备。

公开(公告)号：WO2008024424A3

公开(公告)日：2008-04-17

申请号：PCT/US2007018608

申请日：2007-08-21

Applicant: RGB SYSTEMS INC ,  HALL RAYMOND WILLIAM ,  PARRECO DONALD E

Inventor： HALL RAYMOND WILLIAM ,  PARRECO DONALD E

IPC: H04N5/44

CPC classification number: H04N9/72

Abstract: A feedback circuit for restoration of DC in video signals is presented. A sample pulse representing the back porch of an incoming video signal is generated from the horizontal sync signal. The sample pulse triggers a sample and hold circuit to acquire the correct offset voltage in the output signal during this back porch period. The offset voltage feeds back through a summing node upstream of either the circuit causing the offset or an input amplifier thereby restoring the video signal to the desired DC voltage level with respect to ground.

Abstract translation: 提出了视频信号中DC恢复的反馈电路。 从水平同步信号产生表示输入视频信号的后沿的采样脉冲。 采样脉冲触发采样和保持电路，以在后沿期间获取输出信号中的正确偏移电压。 偏移电压通过导致偏移的电路或输入放大器的上游的求和节点反馈，从而将视频信号恢复到相对于地面的期望的DC电压电平。

公开(公告)号：WO2008030551A2

公开(公告)日：2008-03-13

申请号：PCT/US2007019514

申请日：2007-09-06

Applicant: RGB SYSTEMS INC ,  HALL RAYMOND WILLIAM

Inventor： HALL RAYMOND WILLIAM

IPC: H04N7/04

CPC classification number: H04N7/0102

Abstract: A video format identification system includes a master clock circuit which provides timing and counting signals, a synchronization activity detector operatively coupled to the master clock circuit, and a synchronization width qualifier configured to filter out noise or reference burst signals from showing up as sync signals. The system also includes a synchronization detector which regulates the rate of the incoming sync signal, a color burst sampler providing a window for sampling a reference color burst after the sync signal has occurred, and a color burst detector which looks for at least three transitions from a burst signal before it qualifies the as an appropriate reference color burst. A format sample timer generates sample clock signals. A format sample counter produces "take format" signals which are utilized by a set of format counter. The system further includes a video format identifier which enables a particular video format to be directed to a respective video connector.

Abstract translation: 视频格式识别系统包括提供定时和计数信号的主时钟电路，可操作地耦合到主时钟电路的同步活动检测器，以及被配置为滤除噪声或参考突发信号从而显示为同步信号的同步宽度限定器。 该系统还包括调节输入同步信号的速率的同步检测器，在同步信号发生之后提供用于采样参考彩色脉冲串的窗口的彩色脉冲串采样器以及寻找至少三个转换的色同步检测器 之前的突发信号被认定为适当的参考颜色突发。 格式采样定时器产生采样时钟信号。 格式采样计数器产生由一组格式计数器使用的“采用格式”信号。 该系统还包括使特定视频格式被引导到相应的视频连接器的视频格式标识符。

公开(公告)号：EP2090117A4

公开(公告)日：2011-02-02

申请号：EP07839963

申请日：2007-11-06

Applicant: RGB SYSTEMS INC

Inventor： HALL RAYMOND WILLIAM ,  COLE GARY DEAN ,  PARRECO DONALD E

IPC: H04N11/06 ,  H04N7/10

CPC classification number: H04N7/108 ,  H04B3/10 ,  H04L25/0272 ,  H04L25/0296