System and method for modifying and operating a computer system to perform date operations on date fields spanning centuries
Assignee2000, Inc.
InventorDaniel P. Shaughnessy
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method for modifying and operating a computer system to perform date operations including the steps of storing at least one subroutine for performing the date operation, modifying the application program to include a call to at least one of the subroutines, the call operative to pass at least one date field representative of at least two dates to the subroutine which has been called, wherein the subroutine determines which of the at least two dates corresponds to the date field according to a predetermined criteria performs a date operation on the date field, and returns a code to the application program for use by the application program in its further operations.
Claims22
A method of modifying a computer system comprising the steps of:
- storing at least one subroutine in a memory accessible to the computer system;
- modifying an application program of said computer system to include a call to said at least one subroutine, said call operative to pass at least one data field representative of at least two dates to said at least one subroutine,
- wherein said at least one subroutine determines which of said at least two dates corresponds to said date field according to a predetermined criteria, performs a date operation on said date field, and returns a parameter to said application program for use in further operations.
A computer system for performing date operations on date fields having a two digit representation of the year comprising:
- at least one subroutine, said subroutine for converting a date field into a new format and for performing a date operation on said date field in said new format;
- an application program modified to include a call to said at least one subroutine;
- means for passing at least one date field to said at least one subroutine;
- and
- means for returning a parameter to said application program for use in further operations.
A method of operating a computer system so as to perform date operations on date fields comprising the steps of:
- calling at least one subroutine from an application program, said at least one subroutine for performing a date operation;
- passing at least one date field representative of at least two dates to said at least one subroutine;
- determining which of said at least two dates corresponds to said date field according to a predetermined criteria;
- performing said date operation on said date field;
- and
- returning a parameter from said at least one subroutine to said application program for use in further operations.
Dependencies are inferred from the claim text.