Patent ID: 8098980
Filing Date: 2012-01-17
Classification: G11B,H04N

Abstract:
1. A non-transitory computer-readable information record medium onto which a title, which is constructed from a plurality of video streams and a plurality of audio streams, is recorded, wherein each of the plurality of video streams is a partial stream constructing video information which is multi-recorded by a unit of a packet such that the video information can be recorded by an information recording apparatus or can be reproduced by an information reproducing apparatus, and each of the plurality of audio streams is a partial stream constructing audio information which is multi-recorded by the unit of the packet such that the audio information can be recorded by the information recording apparatus or can be reproduced by the information reproducing apparatus, said information record medium comprising: an object data file for storing object data comprising the title which includes a plurality of switchable parallel streams which can be reproduced so as to be switched and a sequential stream which can be reproduced sequentially, wherein the plurality of switchable parallel streams include a plurality of partial streams which are constructed from the video stream including a plurality of packets each of which stores a piece of the video information and the audio stream including a plurality of packets each of which stores a piece of the audio information, and the sequential stream includes a plurality of partial streams which are constructed from the video stream including the plurality of packets each of which stores the piece of the video information and the audio stream including the plurality of packets each of which stores the piece of the audio information; and reproduction control information for controlling a reproduction of the object data, wherein the reproduction control information includes: a reproduction sequence file, and an object information file and association group definition information, the reproduction sequence file stores play list information which includes first item information and second item information, the first item information defines a reproduction sequence of the sequential stream, which constructs a part of one title, by a unit of an item arranged on a time axis, the second item information defines a reproduction sequence of the plurality of switchable parallel streams, which constructs other part of the one title, by the unit of the item, the object information file stores first partial stream packet identification information and second partial stream packet identification information and first address information and second address information, the first partial stream packet identification information identifies an ID of a packet which belongs to one partial stream belonging to one sequential stream from among the plurality of partial streams which are defined by one first item information, the second partial stream packet identification information identifies an ID of a packet which belongs to one partial stream belonging to one switchable parallel stream from among the plurality of partial streams which are defined by one second item information, the first address information identifies an address of the one partial stream belonging to the one sequential stream from among the plurality of partial streams which are defined by the one first item information, and the second address information identifies an address of the one partial stream belonging to the one switchable parallel stream from among the plurality of partial streams which are defined by the one second item information, the association group definition information defines, as an association group, a plurality of partial streams which are defined by the one first item information or the one second item information, from among the object data which construct the plurality of partial streams constructing the one title, the object data includes a part packetized in a first encoding format and another part packetized in a second encoding format, the object information file further stores classification information for indicating whether the object data is a first object data conforming to the first encoding format or a second object data conforming to the second encoding format, each of the object data file, the object information file, and the play list information file is recorded into a different area as a different file which is a unit recognized by a file system, respectively, the information reproducing apparatus reproduces some of the sequential streams constructing a desired title, from among the plurality of partial streams which are constructed from the plurality of packets, by the object information specified by the first play item information belonging to the play list information extracted by the information reproducing apparatus, the information reproducing apparatus reproduces a desired switchable parallel stream, which is specified by a switching instruction from the information reproducing apparatus, constructing the desired title, from among the plurality of partial streams which are constructed from the plurality of packets, by the object information specified by the second play item information belonging to the play list information extracted by the information reproducing apparatus, the object data file is packetized by a unit of the packet, the object information file is not packetized.