Patent ID: 9703499
Date: 2017-07-11
CPC Classifications: G06F,H04W

Claim:
1. A communication device that performs contactless communication with an RF tag that is provided with a nonvolatile memory having a plurality of blocks serving as units of data erasure of original data to be initialized by data erasure before update data is to be written thereto, the communication device comprising: a specifying unit that specifies, from among the plurality of blocks that include a writing range of the update data, a block that includes the original data that is outside the writing range of the update data when the update data is written into the nonvolatile memory; a backup processing unit that backs up the original data of the block specified by the specifying unit; a storage unit that stores backup data that includes the original data; and a writing processing unit that writes, when the backup data is stored in the storage unit, the update data into the block that was specified and initialized.