专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06285717B1 Digital video encoder for digital video system 失效
标题翻译：数字视频编码器用于数字视频系统
公开(公告)号：US06285717B1
公开(公告)日：2001-09-04
申请号：US08864565
申请日：1997-05-29
申请人： Sam-yong Bahng , Jung-chul Kim
发明人： Sam-yong Bahng , Jung-chul Kim
IPC分类号： H04N712
CPC分类号： H04N21/4305 , H04N5/4401 , H04N5/46 , H04N9/64 , H04N9/68 , H04N11/143 , H04N11/162 , H04N11/20 , H04N19/61
摘要： A digital video encoder for a digital video system wherein digital video data output from an MPEG decoder is input and an analogue composite video baseband signal (CVBS) is output comprises first selection means for selectively outputting first and second clocks in response to a first selection signal, signal dividing means for dividing the input digital video data into a luminance signal and a chrominance signal in response to the output of the first selection means, luminance signal processing means for regulating the gain and offset of the luminance signal, adding a synchronizing signal to the regulated luminance signal, and filtering a low band component of the luminance signal to output the filtered signal as a digital luminance signal, chrominance signal processing means for regulating the gain of the chrominance signal, interpolating the gain-regulated chrominance signal, producing color difference signals, interpolating the produced color difference signals, filtering a low band component of the interpolated color difference signals, and modulating the filtered color difference signals, to thereby output the modulated signal as a digital chrominance signal, signal synthesizing means for synthesizing the digital luminance and chrominance signals and outputting the synthesized signal, first digital-to-analogue converting means for converting the synthesized signal to an analogue signal and outputting the converted signal as the analogue composite video baseband signal, and controlling means for outputting the first selection signal corresponding to the size and input speed of the input digital video signal. Therefore, synchronization is easy, costs are reduced, various OSD functions are provided, a high-quality image is provided, and the displayed image is undistorted.
摘要翻译：一种用于数字视频系统的数字视频编码器，其中输入从MPEG解码器输出的数字视频数据并输出模拟复合视频基带信号（CVBS），包括用于响应于第一选择信号选择性地输出第一和第二时钟的第一选择装置信号分割装置，用于响应于第一选择装置的输出将输入的数字视频数据分成亮度信号和色度信号;亮度信号处理装置，用于调节亮度信号的增益和偏移，将同步信号加到调节亮度信号，并对亮度信号的低频带分量进行滤波，以输出滤波后的信号作为数字亮度信号;色度信号处理装置，用于调节色度信号的增益，内插增益调节色度信号，产生色差信号，内插产生的色差信号，过滤低禁令 d分量，并且调制滤波后的色差信号，从而输出调制信号作为数字色度信号;信号合成装置，用于合成数字亮度和色度信号，并输出合成信号，首先数字转换为 - 用于将合成信号转换为模拟信号并输出转换的信号作为模拟复合视频基带信号的分析转换装置，以及用于输出与输入数字视频信号的大小和输入速度对应的第一选择信号的控制装置。因此，同步容易，成本降低，提供各种OSD功能，提供高质量图像，并且显示的图像不变形。

IPRDB

热门服务

关于我们

友情链接

联系方式