Patent ID: 7421189

Claim:
A data recording device for recording a coded stream onto a recording medium, the device comprising: reproducing means for reproducing an original coded stream recorded on the recording medium; decoding means for decoding the original coded stream outputted from the reproducing means and generating decoded video data of a base band; editing means for switching the decoded video data of the base band and insertion video data at a set edit point and generating edited video data; coding means for coding the edited video data to generate an edited coded stream; recording means for recording the edited coded stream onto the recording medium; and control means for controlling the recording means to record a picture of the edited coded stream onto the recording medium by overwriting in the case where the picture of the edited coded stream is affected by editing processing by the editing means and is different from a picture of the original coded stream recorded on the recording medium, and not to record the picture of the edited coded stream onto the recording medium in the case where the picture of the edited coded stream is not affected by editing processing by the editing means and is the same as the picture of the original coded stream recorded on the recording medium.