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今年4月,NEC在日本首先研制成功满足MPEG1国际标准,在一个基片上完成音、视频解码的LSI,μPD61010。 MPEG1是将电视1/4左右的活动图象和CD相同的声音数据压缩到1.5Mb/s左右的国际标准。与此规格对应的VCD播放机,PC机用的MPEG1重放板等已经产品化。 但是,现在多数产品的音视频解码仍分属于不同的基片,另外,还需加一些硬件,将两个解码器按时序合起来,这不利于降低机器的成本和小型化。 针对上述问题而研制的μPD61010具有如下特征: 1)单片实现MPEG1的音/视
In April of this year, NEC first developed in Japan, successfully meet the MPEG1 international standards, to complete the audio and video decoding LSI, μPD61010 on a substrate. MPEG1 is an international standard for compressing the same audio data of a moving picture of a television set 1/4 and a CD to about 1.5 Mb / s. VCD players corresponding to this standard, MPEG1 playback boards for PCs and the like have been commercialized. However, most products now have audio and video decoding that belong to different substrates. In addition, hardware needs to be added to combine the two decoders in time sequence, which is not conducive to reducing the cost and miniaturization of the machine. Developed in response to the above problems μPD61010 has the following characteristics: 1) a single chip to achieve MPEG1 audio / visual