Patent ID: 6392974
Filing Date: 2002-05-21
Classification: G11B

Abstract:
An audio playback system comprising:a record carrier having at least one track, the track having at least one block, the block including a plurality of interleaved audio programs and being grouped into a number of consecutive sub-blocks, each of the audio programs being segmented to form a number of consecutive audio sectors that is equal in number to the sub-blocks, the audio sectors of the audio programs being recorded on the record carrier in a predetermined order and being arranged among the sub-blocks such that a jth one of the audio sectors of each of the audio programs is disposed in a jth one of the sub-blocks, thereby disposing each of the audio sectors adjacent to an audio sector of a different audio program, each of the audio sectors including an ID field for storing an ID code that is unique for each of the audio sectors, and a data field; drive means for reading the audio sectors of said interleaved audio programs in the predetermined order recorded on the record carrier at a relatively constant linear velocity when said drive means is loaded with said record carrier, and sending out the audio sectors; an ID extractor connected to said drive means for extracting the ID codes of the audio sectors that were sent out by said drive means; a retrieval controller connected to said ID extractor to receive said ID codes extracted thereby; and a sector data extractor connected to said drive means and said retrieval controller, said sector data extractor receiving said data fields of said audio sectors that were sent out by said drive means, and being controlled by said retrieval controller to extract said data fields of appropriate ones of said audio sectors when the ID codes thereof are recognized by said retrieval controller as belonging to a selected one of the audio programs.