Patent ID: 7225310

Claim:
A method for successively recording data in a hybrid digital recorder, comprising: a) recording an input data stream on a detachable recording medium; b) temporarily storing the input data stream in a memory when the recording medium has no remaining space for recording the input data stream; c) replacing the recording medium with a new recording medium when the recording medium has no remaining space, reading the data stream temporarily stored in the memory, and recording the stored data stream on the new recording medium while temporarily storing the input data stream in the memory; and d) recording the input data stream on the new recording medium when the stored data stream has been completely recorded on the new recording medium, wherein a time for recording the stored data stream on the new recording medium is t g = ( V b - V a ) V a × V b × Q h , where V a is a transfer rate of the input data stream, V b is a recording rate at which the stored data stream is recorded on the new recording medium, t g is the time to replace the recording medium with the new recording medium, and V b is greater than V a .