Patent ID: 7305170
Filing Date: 2007-12-04
Classification: G11B,H04N

Abstract:
1. An information recording apparatus for recording information to an information recording medium for storing at least two objects containing multiplexed encoded video data and encoded audio data, and management information for managing the at least two objects, the video data including intra-coded picture data and inter-coded picture data, the at least two objects including at least a first object and a second object, the first object being an object for which a location of the intra-coded picture data in the object is managed by the management information, the second object being an object for which a location of the intra-coded picture data in the object is not managed by the management information, the first object being of a different type than the second object, the management information being information for separately managing the first object and the second object, and including map information for each first object, and the map information correlating a playback time of the corresponding first object with the location of the intra-coded picture data included in the corresponding first object, the apparatus comprising: an interface for inputting an object from an external part; a generating section for generating management information corresponding to the input object; and a recording section for recording the input object and the management information to the information recording medium, wherein the generating section includes wherein the management information has, as information to identify the first object and second object, a validity flag which indicates whether the map information for each first object and second object is valid, and wherein the generating section is further for