Patent ID: 8407485

Claim:
An information updating apparatus that updates information elements recorded in a non-volatile recording medium, the recording medium including two groups of recording areas that are identical in number, the information updating apparatus comprising: a hardware processor operable to (i) write, on a one-to-one basis, information elements into one of the two groups of recording areas using judgment information, the judgment information indicating, as target recording areas, the one of the two groups of recording areas into which the information elements are to be written, and (ii) update, each time the processor completes writing of all of the information elements, the judgment information to indicate the other one of the two groups of recording areas as the target recording areas, wherein, for each of the information elements, the processor writes information pieces that form the information element into an address range corresponding to a different recording area from among the target recording areas, the address range defining a continuous region in an address space.