Patent ID: 6725351
Filing Date: 2004-04-20
Classification: G11C

Abstract:
A data communication device comprising:a flash memory; a primary buffer region provided in said flash memory and having a plurality of pieces of information stored therein time-sequentially from an earliest piece of information to a latest piece of information; an auxiliary buffer region provided in said flash memory for receiving and storing pieces of primary-buffer storage information to be stored in said primary buffer region in said auxiliary buffer region during a first condition of said data communication device when the information stored in said primary buffer region is not allowed to be updated; and an information-storage control unit for, when the primary-buffer storage information is stored in said auxiliary buffer region and during a second condition of said data communication device when updating of the information in said primary buffer region is allowed, reading information having a size not more than the storage capacity of said primary buffer region from the information stored in said primary buffer region and said auxiliary buffer region, and re-storing the information that has thus been read in said primary buffer region.