Real time WIP system

Assembly Automation

ISSN: 0144-5154

Article publication date: 1 September 2004




Rigelsford, J. (2004), "Real time WIP system", Assembly Automation, Vol. 24 No. 3.



Emerald Group Publishing Limited

Copyright © 2004, Emerald Group Publishing Limited

Real time WIP system

Real time WIP system

Keywords: Work in progress, Data, Patents

Applicant: Taiwan Semiconductor Manufacturing Company, TaiwanPatent number: US6,684,121Publication date: 27 January 2004Title: Real time work-in-process (WIP) system

This patent describes methods and systems for compiling and publishing process execution status data such as work-in-process information. They are applicable to event driven methods and systems for receiving, converting, tracking and publishing work-in-process status created from manufacturing execution systems controlling multiple fabrication lines of factories of a company. The process monitor system converts and encapsulates the process execution status data with a common standard formatting, whereby the process execution status data are published to subscribers of specific subjects of the process execution status data. The converted and encapsulated process execution status data are logged to a message ledger to certify publication and receipt by subscribers, and a periodic diagnostic messaging or heartbeat is transmitted between elements processing and publishing the process execution status data to provide failure recovery. The elements processing and publishing the process execution status data are connected as a distributed queue of parallel process and have a designated scheduler to provide a balancing of loading.

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