Patent ID: 7532805

Claim:
An audio-visual data recording/reproducing device for recording/reproducing stream data that are transferred synchronously with a display timing, comprising: a stream data input/output interface for inputting/outputting the stream data from/to an external device; a timestamp adding and recording portion for generating timestamped data to which a timestamp corresponding to the display timing has been added based on the stream data that are input via the stream data input/output interface and for recording the timestamped data in a recording medium; a stream data reproducing portion for reproducing stream data based on timestamped data that are read from the recording medium, in order to output the stream data via the stream data input/output interface; an asynchronous input/output interface for inputting/outputting from/to the external device, timestamped data having a timestamp added thereto that are transferred asynchronously with the display timing; an asynchronous transfer data recording portion for recording the timestamped data that are input via the asynchronous input/output interface in the recording medium; and an asynchronous transfer data reproducing portion for reading timestamped data from the recording medium, in order to output the timestamped data via the asynchronous input/output interface, wherein synchronous transfer through the stream data input/output interface is performed with higher preference than asynchronous transfer through the asynchronous input/out interface.