Patent ID: 8326129

Claim:
An audio and video (AV) device capable of recording a signal including at least one of sound data or image data onto a recording medium, comprising: means for receiving instructions for recording the signal at the desired time, from the other devices through a network; means for reserving a recording region on the recoding medium in accordance with the instructions; means for not using the reserved recording region until it becomes the desired time: means for recording the signal onto the recoding region when it becomes the desired time: means for detecting a residual capacity on the recording medium; means for transmitting information concerned with the residual capacity to the other devices through the network, when the residual capacity of the recording medium being less than a capacity required for recording the signal onto the recording medium, when reserving the recording region; and, means for receiving information concerned with the reserving recording region for recording during a desired time duration from the desired time, from the other devices through the network.