DATA BACKUP SYSTEM, DATA BACKUP METHOD, WEARABLE COMPUTER, MAIL TRANSMISSION SYSTEM, IMAGE INFORMATION TRANSMISSION SYSTEM AND DATA BACKUP PROGRAM

摘要

PPROBLEM TO BE SOLVED: To provide a wearable computer that enables important data to be backed up in a device on a user. PSOLUTION: A data backup system comprises the wearable computer and a personal digital assistant capable of data communication with the wearable computer. The personal digital assistant reads out an update history and a backup history from a storage part, compares the preceding backup time indicated by the backup history and the update history, and searches for new data updated after the backup time. Such data are extracted as backup data, and the extracted backup data are transmitted. The wearable computer receives the backup data to write the backup data into a storage part. PCOPYRIGHT: (C)2005,JPO&NCIPI