Patent ID: 7822316

Claim:
A digital video recorder to be connected to a digital video (DV) camcorder via an IEEE 1394 serial bus, comprising: command issuing means for issuing operation commands to the DV camcorder, the operation commands including a command to rewind a DV tape and a pause command; time code acquiring means for acquiring a time code from the DV camcorder that is in process of rewinding the DV tape in response to a rewind command issued by the command issuing means; calculation means for calculating a difference between a current rewind position and a beginning position on the DV tape based on the time code acquired by the time code acquiring means; step reverse command issuing means for changing a command to be issued to the DV camcorder by the command issuing means into a step reverse command when the difference between the current rewind position and the beginning position on the DV tape, which is calculated by the calculation means, is smaller than a first reference value; comparing means for, when a step reverse operation is executed in response to a step reverse command issued by the step reverse command issuing means, comparing a time code acquired from the DV camcorder before the execution of the step reverse command with a time code acquired from the DV camcorder after the execution of the step reverse command; and rewind completion recognizing means for recognizing completion of the rewind of the DV tape when the time codes before and after the execution of the step reverse command match as a result of the comparison by the comparing means.