Patent ID: 6879552

Claim:
An information recording and reproducing system comprising: a host device; and an information recording and reproducing device connected with said host device via a host interface, the information recording and reproducing device including a data-recording interrupting-resuming unit that performs a recording of data transferred from said host device via said host interface on a recording medium at a predetermined data-writing velocity, and, in a case of having interrupted said recording, resumes said recording by linking an end point of said data upon the interruption with a start point of said data upon the resumption so as to maintain a continuity of said data, wherein said host device includes a control-command issuing unit issuing a control command to said information recording and reproducing device, the control command causing said data-recording interrupting-resuming unit either to perform the interruption and resumption of the recording or not to perform the interruption and resumption of the recording, said host device further comprising a test-writing unit causing said information recording and reproducing device to perform a test-writing to said recording medium at a predetermined writing velocity; an interruption-probability judging unit making a judgment on whether or not there is a probability of the interruption during a recording of data to said recording medium, according to a result of said test-writing; and said information recording and reproducing device includes a data-recording interruption-resumption control unit controlling said data-recording interrupting-resuming unit either to perform the interruption and resumption of the recording or not to perform the interruption and resumption of the recording, according to said control command received from said host device via said host interface.