Patent ID: 7440680

Claim:
An information recording medium on which an entire stream including a plurality of portion streams, each of which comprises picture information or audio information constituting a series of content, is multiplexed-and-recorded by a unit of packet, which is a physically accessible unit, comprising: an object data file for storing object data, which is a logically accessible unit and is constructed by a plurality of packets, each of which stores therein a segment of the picture information or the audio information; a reproduction sequence information file for storing reproduction sequence information which defines a reproduction sequence of the object data stored in said object data file; and an object information file for storing, as reproduction control information for controlling a reproduction of said object data file, (i) correspondence definition information which defines a correspondence relationship between identification data and address information on the information recording medium of each packet, the identification data including a program number for specifying certain one of the plurality of portion streams which are comprised of a plurality of packets multiplexed on a time axis, each correspondence relationship being given a unique index among the entire stream, and (ii) related group definition information which defines, as a related group comprised of certain indexes of the correspondence definition information, a group comprised of certain portion streams having a specific relation from among a plurality of series of contents constituting the plurality of portion streams.