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公开(公告)号:US06907559B2
公开(公告)日:2005-06-14
申请号:US10024742
申请日:2001-12-20
申请人: Trevor G.R. Hall , Bruce Murray
发明人: Trevor G.R. Hall , Bruce Murray
CPC分类号: G11B20/1833
摘要: DVD data is read from an optical disc. Double buffering is used for outer error correction syndromes, the syndrome for one ECC frame being accumulated in one syndrome buffer, while error correction calculations for preceding data block are performed using a syndrome accumulated previously in another syndrome buffer). The syndrome buffers are used in alternating fashion as further blocks of data are received, while the flow of data to a main buffer is uninterrupted. This reduces buffering requirements in the decoder, and relaxes time constraints on the error correction calculations. A multi-beam implementation is disclosed, providing higher throughput.
摘要翻译: 从光盘读取DVD数据。 双重缓冲用于外部纠错综合征,一个ECC帧的综合征被累积在一个综合征缓冲器中,而先前数据块的误差校正计算使用先前累积在另一个综合征缓冲器中的综合征进行)。 当接收到更多的数据块时,校正子缓冲器以交替的方式使用,而到主缓冲器的数据流不间断。 这减少了解码器中的缓冲要求,并且放宽了对纠错计算的时间限制。 公开了一种多波束实现,提供更高的吞吐量。