| 摘要 |
<p>Upon reading data from the main memory, an input unit (110) repeatedly starts and stops inputting the data to a compression execution unit (120) that executes lossless compression. A start address holding section (112) stores the start address used in the main memory for the data input this time by the input unit (110). When writing compressed data output each time by the compression execution unit (120) into an auxiliary memory, a write unit (130) pads predetermined data into the compressed data such that the data size matches the write unit of the auxiliary memory. A control unit (150) resets the internal state of the compression execution unit (120) every time the input unit (110) stops the input. The input unit (110) stops the input before the maximum size resulting from the input of this time, which the data already input to the compression execution unit can possibly take when compressed, reaches the write unit of the auxiliary memory. Thus, the compressed data can be regenerated using the write unit of the destination memory device into which the compressed data have been written.</p> |
