Patent ID: 6429364
Filing Date: 2002-08-06
Classification: G11B

Abstract:
A data transmission and receiving apparatus for sending and receiving data through an intervening digital interface, the data transmission and receiving apparatus comprising:a data storage means for accumulating a first descriptor, which is a descriptor for a first content block recorded to a recording medium, and a second descriptor, which is a descriptor for a second content block associated with the first content block, wherein a descriptor is expressed by a list structure generated for an AV data descriptor and a text data descriptor, and a pointer to a related text data descriptor is written to an AV data list object, wherein a text information, which is an attribute data of AV data, can be accessed from an external device by following links from the AV data descriptor, a list conversion means for mutually converting a list and the first and second descriptors stored by the data storage means, and a data transmission and receiving means for sending and receiving the list converted by the list conversion means through the digital interface, wherein the list conversion means groups the first descriptor into a third descriptor expressed independently of the first content block, and a fourth descriptor other than the third descriptor, divides the second, third, and fourth descriptors respectively into object units corresponding to individual pieces of content, generates a first list consisting of a fourth descriptor object block, a second list consisting of a descriptor object clock, a third list consisting of an object representing a content block in the second descriptor object block, and a fourth list consisting of other objects, and writes to an object in first list link information to an object in the second list containing the third descriptor for content corresponding to an object in the first list, and an object in the fourth list containing the second descriptor for content corresponding to an object in the first list.