Patent ID: 7848610

Claim:
A data processing system comprising: a computer to output to a reproduction apparatus data required for reproduction of a reproduction point in reproduced data when receiving as input a first command designating a reproduction point of reproduced data, to output to said reproduction apparatus a reproduction start command of said reproduction point when receiving as input a second command indicating the start of reproduction of said reproduction point designated by said first command after receiving as input said first command, to output to said reproduction apparatus a group of picture data one position in display order before a group of picture data to which said reproduction point belongs when said reproduction point is at a first half of said group of picture data to which said reproduction point belongs, and to output to said reproduction apparatus a group of picture data one position in display order after said group of picture data to which said reproduction point belongs when said reproduction point is at a second half of said group of picture data to which said reproduction point belongs; and a reproduction apparatus to decode data of said reproduction point based on said data input from said computer, to store a decoding result in a reproduction memory that stores data of two groups of picture data, and, when receiving as input said reproduction start command from the computer, reading, reproducing, and outputting the decoding results of said reproduction point from said reproduction memory.