Patent ID: 7895351

Claim:
An information recording/reproducing system comprising: a data storage device that stores a data stream with a predetermined data format; and an information recording/reproducing apparatus that records and reproduces the data stream, said information recording/reproducing apparatus being connected with the data storage device, wherein the information recording/reproducing apparatus includes: information recording/reproducing portion that records and reproduces the data stream; memory portion that stores plural species of empty data file bodies each in which additional information and data are assigned to loading regions, said additional information corresponding to a species of data format; selection portion that selects an empty data file body with a specified data format from the plural species of empty data file bodies that are stored in the memory portion; and information-loading portion that loads the additional information and the data into predetermined loading regions assigned in the empty data file body that has been selected by the selection portion, wherein the memory portion spreads the data stream with the predetermined data format that is read out of the data storage device; wherein the selection portion selects an empty data file body with a data format corresponding to a data file body that fills a data stream spread in the memory portion; and wherein the information recording/reproducing apparatus further includes control portion that allows for comparing the data file body that fills a data stream spread in the memory portion with the empty data file body selected by the selection portion to search the loading regions of the additional information and the data, and controls the memory portion to extract the additional information from the loading region of the additional information in the filled data file body and to extract the data from the loading region of the data in the filled data file body.