其他摘要：Tokyo Gas Co. , Ltd. developed a system effective for front lines of emergency security, facility management and gas selling operations utilizing user information. It is an integrated system of CD-ROM, movable communication system and databases loaded on a host computer aiming at shortening of time from troop's turning out at emergency to their reaching accident site, smooth operation and improvement of security level, through communication between front lines and stations based on information. This paper introduces how secret is protected from bringing out of data, how progress in operations is managed, searching capabilities, how image description should be speeded up, maintenance of CD-ROM and future development of this system.
关键词：-;移動体通信;マッピングシステム;検索;地図;セキュリティー
其他关键词：CD-ROM ; movable communication ; mapping system ; searching ; map ; security
