Information update count managing method, information update count managing apparatus, contents usage count managing method, and content usage count storing apparatus

摘要

The present invention provides an information update count managing method, including: a write step of writing pieces of information in a predetermined order in an information storage area including at least one WORD of a non-volatile memory, wherein information can be written to the non-volatile memory in a unit of WORDs, each WORD including a plurality of bits, and information can be erased from the non-volatile memory in a unit of sectors, each sector including a plurality of WORDS; and a read step of reading out the last piece of information which has been written in the information storage area within a predetermined permitted update count.