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国际上数字式影视盘(DVD)制式标准的统一和国内DVD技术日趋成熟预示,刚刚在家电市场上掀起热潮,被称为我国唯一与国际先进水平保持同步发展的小影碟(VCD),3—5年后可能被其更新品种DVD所取代。 据悉,世界两大DVD制式阵营(东芝、松下与索尼、飞利浦)去年9月1s日就制式统一标准达成了协议。有关专家就此评论说,作为DVD过渡产品的VCD3—5年后将退出历史舞台。目前我国DVD样机已经在江奎、万燕等厂问世,只是因为制式标准未统一而推迟进入市场。 DVD最终取代VCD的主要原因是前者的技术标准和图像质量明显高于后者。VCD是以激光读取数字信号的视盘,其图像压缩及解压缩采用的是MPEG1标准,只可记录74分钟的彩色图像,不能贮存一部完整的故事片,其图像质量也比大激光视盘(LD)差。DVD采用的是
The unification of digital video disk (DVD) standard and the maturing of domestic DVD technology in the world indicate that it has just started a boom in the home appliance market and is known as the only VCD (VCD) in China that keeps pace with the international advanced standards. The 3- 5 years later may be replaced by its updated variety DVD. It is reported that the world’s two major DVD camp (Toshiba, Panasonic and Sony, Philips) in September last year, 1s on the standard unified agreement reached. Relevant experts commented on this, as DVD transitional products VCD3-5 years later will leave the historical background. At present, China’s DVD prototype has been in Jiang Kui, Wan Yan and other plants come out, just because the standard is not uniform and delayed into the market. The main reason that DVD eventually replaced VCD was that the former’s technical standards and image quality were significantly higher than the latter. VCD is a laser disc to read digital video disc, the image compression and decompression using the MPEG1 standard, can only record 74 minutes of color images, can not store a complete feature film, the image quality than large laser disc (LD )difference. DVD is used