Patent ID: 6856962

Claim:
A schedule management system comprising: a schedule data storage unit for storing schedule data including the identifier of the owner of each schedule and the time zone, the activity and the reservation state; a definition data storage unit for storing definition data which defines whether or not a new reservation for reserving a schedule is accepted and defines whether or not the schedule is permitted to be displayed in accordance with the reservation state representing said owner's response to the schedule data in said schedule data storage unit; schedule data registration means for accepting a request for reserving a schedule ad determining whether the registration of said reservation schedule is permitted or not based o the reservation state existing in said schedule data storage unit and said definition data, and registering said reservation schedule in said schedule data storage unit when said registration is permitted; schedule data approval means for accepting a request for approval/disapproval of a schedule from the owner of a schedule and rewriting the reservation state of the corresponding schedule data in said schedule data storage unit; schedule display means for accepting a request for displaying a schedule, determining whether said schedule existing in said schedule data storage unit is displayed or not on said terminal which provides a request for reserving a schedule based on the reservation state of said existing schedule and said definition data, and displaying only the schedule data which is determined to be displayed; and unoccupied time search means for accepting a request for searching for an unoccupied time for a schedule, determining whether the time zone of said schedule is rendered an occupied time or not based on the reservation state of the schedule data existing in said schedule data storage unit and said definition data, and in the case where said time zone of said schedule is rendered an occupied time zone, displaying an unoccupied time by removing said time zone of said schedule from the unoccupied time.