Patent ID: 7254513

Claim:
An apparatus of fault detection and classification (FDC) specification management, comprising: a storage device capable of storing a specification management record and a chart profile record, the specification management record storing a statistical algorithm setting of a statistical algorithm for a parameter, and the chart profile record storing chart frame, a lower bound value and an upper bound value for the parameter applying the statistical algiorithm setting of the statistical algiorithm, the lower and upper bound values describing an acceptable range of the parameter; and a process module receiving a manipulation message, determining whether the manipulation message indicates that the specification management record is revised to apply a new statistical algorithm to the parameter, remove the statistical algorithm from the parameter, or update the statistical algorithm setting of the statistical algorithm, creating a new chart profile record comprising a new chart frame, a new lower bound value and a new upper bound value for the parameter applying the new statistical algorithm when determining the manipulation message indicates that the specification management record is revised to apply the new statistical algorithm to the parameter, removing the chart profile record when determining that the manipulation message indicates that the specification management record is revised to remove the statistical algorithm from the parameter, modifying the chart frame, and lower and upper bound values of the chart profile record in response to the updated statistical algorithm setting of the statistical algorithm when determining that the manipulation message indicates that the specification management record is revised to update the statistical algorithm setting of the statistical algorithm, and generating a new statistical process control chart (SPC) or an updated SPC chart with reference to the newly generated or updated chart profile record for tracking and analyzing manufacturing variations of the parameter.