Patent ID: 8320730

Claim:
An input/output device connected to a video camera and to a storage device, the input/output device controls only audio/video data input/output operations from or to the storage device having a non-linear accessible recording medium, the input/output device comprising: input/output control unit outputting of externally supplied audio/video data from the video camera to the storage device, and inputting of audio/video data from the storage device; and record information management unit generating, storing and managing, through a file system provided therein, record management information related to the audio/video data acquired at the time when the audio/video data is recorded to the storage device by the input/output control unit, the file system is provided in the record information management unit independent of the storage device, wherein the storage device only stores the audio/video data, and wherein the input/output control unit accesses the file system of the record information management unit to acquire the record management information relating to the audio/video data to be reproduced and input/outputs the audio/video data from the storage device on the basis of the record management information managed by the file system of the record information management unit, a transfer bit rate between the storage device and the input/output control unit is constant since only the audio/video data is input/output between the storage device and the input/output control unit.