Patent ID: 7127570
Filing Date: 2006-10-24
Classification: G06K,G06Q,G07F

Abstract:
1. A proximity communication system for rewriting data in response to a request from an external device in the proximity thereof, comprising: a memory area having one or more data blocks for rewriting the data in response to the request for rewriting data from the external device and control information provided for each of the data blocks, a data rewrite control section for controlling the rewrite of a corresponding data block and its control information in response to the request from the external device for rewriting data, wherein the data rewrite control section performs a rewrite in a single transaction by performing the rewrite operation en bloc when a sum of control information relating to rewriting a data block is equal to or less than an allowable rewritten data size, and wherein the data rewrite control section performs a rewrite in a single transaction by dividing the control information, in a linked order, into a plurality of groups, each of which can be rewritten in a single transaction, when the sum of the control information relating to rewriting the data block exceeds the allowable rewritten data size, and writing information that enables continuing performance of the following transaction in each transaction into an end control information even if the rewrite operation is interrupted.