Patent ID: 6421786
Filing Date: 2002-07-16
Classification: G06F

Abstract:
A virtual system time management system for use in a data processing unit with a single system clock indicating the current date and time, said system comprising:a virtual system time storage area having a plurality of records, each of the records comprising a command name field, a date storage field, and a time storage field; virtual system time setting means for receiving, and storing in the virtual system time storage area, a date different from the current date indicated by said system clock and/or a time different from the current time indicated by said system clock from an input/output unit; and virtual system time converting means responsive to a system date acquisition request from a command or a job in execution for returning, when a date is stored therein, that date stored in said virtual system time storage area and responsive to a system time acquisition request from the command or the job in execution for returning, when a time is stored therein, the sum of the current time indicated by said system clock and that time stored in said virtual system time storage area.