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视频信号

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A video card , also called a graphics card or video adapter , converts digital output into an analog video signal that is sent through a cable to the monitor .

视频卡也称图形卡,显示卡或显示视频适配器,它将数字输出转换成通过电缆发送到显示器的模拟视频信号

This thesis mainly researches Video Monitoring System and video transmission technology which are based-on Intranet.

论文主要研究基于企业内联网的视频监控系统及视频传输技术,主要工作包括:(1)总结并分析了视频信号编解码原理及应用。

This text for the test of the numerical video frequency system, the diagraph principle and method of the logarithms word video frequency signal carry on a study.

本文就数字视频系统的测试,对数字视频信号的测量原理和方法进行探讨。

Compared to the ordinary PLL circuits, it can endure the short time appearance that occurs once in a horizontal line of the sync signal. It can adapt to the phase alternation character of a PAL video signal and recognize the phase alternation line. The local color sub-carrier can be generated for synchronous demodulation by the circuit.

该电路使用了全数字锁相环对色同步信号进行跟踪,与普通锁相环电路相比,它不仅能适应制视频信号中色同步信号每行出现一次和PAL制信号逐行倒相的特性,还能识别倒相开关信号,准确地产生本地色副载波用于同步解调。

It can separate sync signals from NTSC, PAL and SECAM video signals, and produces composite sync output signal, back porch output signal, horizontal sync signal, vertical sync signal and odd/ even field output signal.

它可以对NTSC、AL、ECAM 制式的视频信号进行同步分离,获得所需的同步信号,还能准确地输出复合同步、沿输出、同步、同步和奇/场输出信号。

Video controller chip ,which is one of the important component of video embedded systems,plays an important role in video signal acquisition,decoding,encoding,output and other important functions.

视频处理芯片是嵌入式视频系统的核心部件之一,具有视频信号采集、编码、解码、输出等功能。

This article introduces the hardware structure and the software design of a digital video mixer ,which controls the digital video mix processing chip by the PIC single chip microcomputer intermitting technique.

介绍了一种利用P IC单片机中断技术来控制数字视频混合处理芯片,实现将2路或多路数字视频信号混合成1路或多路输出的数字视频混合器的硬件构成和软件设计。

Broad signal source, compatible PAL system and NTIS make a video signal, but videoplayer , telecamera , TV video frequency export direct butt-joint with VCD , DVD , magnetic tape.

宽泛的信号来源,兼容PAL制和NTIS制视频信号,可与VCD,DVD,磁带放像机,摄像机,电视视频输出直接对接。

Main Products: Network Analyzer, integrated tester, spectrum analyzer, noise figure testers, receiver, telephone tester, high, low-frequency signal source, audio, video signal source, high, low-frequency oscilloscope, modulation device, the video analyzer and so on.

主要产品:网络分析仪,综合测试仪,频谱分析仪,噪声系数测试仪,接收机,电话测试仪,高、低频信号源,音、视频信号源,高、低频示波器,调制仪,视频分析仪等。

Used mainly engaged in Communications equipment Products: Network Analyzer, integrated tester, spectrum analyzer, noise figure testers, receiver, telephone tester, high, low-frequency signal source, audio and video signal source, high, low-frequency oscilloscope, modulation device, video analysis detector.

主要经营二手通信仪器产品:网络分析仪,综合测试仪,频谱分析仪,噪声系数测试仪,接收机,电话测试仪,高、低频信号源,音、视频信号源,高、低频示波器,调制仪,视频分析仪等。

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