Subhash Gupta

US Patent:

52608689, Nov 9, 1993

Filed:

Oct 15, 1991

Appl. No.:

7/776713

Inventors:

Subhash Gupta - Dallas TX
Sanjiv S. Sidhu - Dallas TX
Frank Vlach - Plano TX

Assignee:

Texas Instruments Incorporate - Dallas TX

International Classification:

G06F 1520

US Classification:

364402

Abstract:

A mechanism and method for calendaring a plurality of events such as scheduling the operation of interrelated machines which perform a process flow. Future time is divided into segments, called buckets, of increasing length. The first two buckets are of the same size and each of the following buckets twice as large as its preceding bucket. The first bucket slides so as to always cover a specified length of time following the current time. Events scheduled in the calendar is added to the appropriate bucket, depending on how far in the future it is to take place. When the current time equals the scheduled time for an event, then that event is removed from the bucket where it resides. When a bucket has become empty because all events have been removed from it, the events in the following bucket are distributed over the two buckets preceding it.

US Patent:

48886920, Dec 19, 1989

Filed:

Nov 10, 1988

Appl. No.:

7/273643

Inventors:

Subhash Gupta - Dallas TX
Frank Vlach - Plano TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G06F 1546

US Classification:

364402

Abstract:

A system for scheduling the operation of interrelated machines which perform a process flow. A global definition of the system is made once, and each machine has an individual profile describing its local interaction with the system. Local scheduling decisions for each machine are made based on that machines individual profile and the state of the manufacturing facility at the time a decision is needed. Operation of the individual machines is controlled by the local scheduling decisions made therefor.