Patent ID: 7274637

Claim:
An information storage apparatus, comprising: a data writing unit that writes the data in a data-storable information recording medium; and a conditional control information writing unit that, while said data writing unit is writing the data in the information recording medium, if a predetermined condition is satisfied, writes control information in a predetermined region of the information recording medium, the control information being related to the data-writting for the meantime by the data writing unit; and wherein said data writing unit further comprises: a buffer unit that buffers data input from an exterior in that order; a write unit that writes the data buffered by said buffer unit in the information recording medium; a start unit that, if the amount of the data buffered in said buffer unit becomes equal to or more than a predetermined amount, causes said write unit to start the data-writing; and a stop unit that if the amount of the data buffered by said buffer unit becomes equal to or less than a predetermined amount, causes said write unit to stop the data-writing; wherein the predetermined condition is a predetermined timing after the data-writing is stopped by said stop unit and before the data-writing is started by said start unit.