A data reproduction apparatus and a data storage medium for synchronously reproducing multiplexed data with video, audio, and superimposed dialogue data compressed at a variable rate and performing various functions. Data are reproduced from the data storage medium using sector numbers, and data for...http://www.google.com.au/patents/US6151441?utm_source=gb-gplus-sharePatent US6151441 - System for storing and reproducing multiplexed data
