Patent ID: 6519656
Filing Date: 2003-02-11
Classification: G11B,H04L

Abstract:
A data transmission apparatus for sending main data recorded on a recording medium to an external equipment and receiving main data recorded on another recording medium from the external equipment via a digital interface based on command data sent from the external equipment, said apparatus comprising:an auxiliary information storage means for storing items of auxiliary information related to a transaction of the main data, the auxiliary information including items of attributive information data from the recording medium, said attributive information being indicative of attributes of the main data recorded on the recording medium; and a list producing means for producing a list of the auxiliary information, based on the attributive information in said auxiliary information storage means, by appending a corresponding ID code to one or more of the items of the auxiliary information, wherein said ID codes correspond to the respective items of auxiliary information according to a table of correspondence between said ID codes and corresponding types of items of auxiliary information, respectively, said ID codes enabling access to a desired item of auxiliary information.