Patent ID: 7155596
Filing Date: 2006-12-26
Classification: G11B

Abstract:
1. An electronic device, which is adapted to use a storage medium in which content data is divided into units of clusters and stored, comprising: playback means for reading and playing in units of said clusters, said content data stored in said storage medium; a link information table in which a link structure of said clusters in said storage medium is recorded, a cluster table in which, of said units of clusters constituting said content data recorded in said storage medium, cluster numbers of said units of clusters played by said playback means are recorded at predetermined recording intervals, wherein when said playback means plays accesses said content data in reverse, if the cluster number of a target cluster to be read is recorded in said cluster table, said target cluster recorded in said cluster table, and indicated by said cluster number, is read from said storage medium, and if said cluster number of said target cluster to be read is not recorded in said cluster table, said cluster number of said target cluster is obtained by moving along said link information table from, said cluster number of said clusters and said recording intervals recorded in said cluster table, a cluster previous to said target cluster, and the cluster indicated by said cluster number thus obtained is read from said storage medium.