Lot start agent that determines virtual WIP time including an exponentially weighted moving average cycle time

US6725113B1 · kind B1 · utility

Assignee

• Advanced Micro Devices, Inc. · US

Inventors

• Larry D. Barto · Austin, US
• Steven C. Nettles · Blanco, US
• Yiwei Li · Hangzhou City, CN

Key dates

• Filing date: Apr 26, 2002
• Grant date: Apr 20, 2004
• Expiry date: Jun 4, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P90/80
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A system and method are provided for calculating a plurality of bottleneck delta virtual work in process time (“VWIP”) values. Each of the bottleneck delta VWIP values represents the time until one of n bottleneck workstations begins to risk starvation. The calculating includes deriving one or more baseline cycle times based on an X-factors method.