Patent ID: 8488941

Claim:
A reproducing apparatus for reproducing multiplexed coded data and control data from a recording medium, the multiplexed coded data is composed of coded audio-data, coded video-data and additional data for multiplexing coded audio-data and coded video-data, said coded video-data including key frame data and other frame data, the control data not being part of said multiplexed coded data and being recorded separately from the multiplexed coded data so that the control data can read/write independently from said multiplexed data, said reproducing apparatus comprising: a recording medium controller for reading the multiplexed coded data and control data, wherein the control data includes key-frame location information, the key-frame being at least one of an I-frame and P-frame, said key-frame location information including at least one of video location information which indicates a position of coded video-data of a key-frame, audio location information which indicates a position of coded audio-data corresponding to a key-frame, multiplexed location information which indicates a position of multiplexed coded data which synchronously reproduces coded video-data of the key-frame and corresponding coded audio-data, and a coded data control portion which includes memory area, wherein the control data in said memory area indicates the location of key frame data.