Patent ID: 7529971

Claim:
A composite memory device comprising: a recording medium having a first data area assigned a first physical address; a nonvolatile recording medium having a second data area assigned a second physical address, and an identification information table assigned logical addresses for managing the first and second physical addresses and having predetermined identification information written therein at each of the logical addresses; an interface to which a host device is to be connected; a recognizing means for recognizing a host device connected to the interface; an identification information table reading means for reading the identification information table from the nonvolatile recording medium; an information selecting means for selecting a logical address where the predetermined identification information is written on the basis of the result of recognition supplied from the recognizing means and identification information table read by the identification information table reading means; a converting means for converting a logical address selected by the identification information selecting means into a first predetermined physical address corresponding to the first data area and into a second predetermined physical address corresponding to the second data area; a data allocating means for allocating data supplied from the host device connected to the interface to the first or second data area on the basis of the conversion made by the converting means; a first writing means for writing the data allocated to the first data area by the data allocating means at a predetermined location in the first data area on the basis of the first physical address; and a second writing means for writing the data allocated to the second data area by the data allocating means on the basis of the second physical address.