Patent ID: 7052919

Claim:
A computer program product for scheduling a wafer processing system, the computer program product comprising: resources for scheduling the wafer processing system during a first time period, wherein a first plurality of wafers is processed during the first time period at a constant rate based on intervals of a predetermined wafer sending period, and each of the first plurality of wafers is processed according to a first recipe; resources for scheduling the wafer processing system during a second time period, wherein a second plurality of wafers is processed during the second time period at a constant rate based on intervals of a predetermined wafer sending period, and each of the second plurality of wafers is processed according to a second recipe; resources for scheduling the wafer processing system during a third time period, wherein a third plurality of wafers is processed during the third time period at a constant rate based on intervals of a predetermined wafer sending period, such that one or more wafers from the third plurality are processed according to the first recipe, and one or more wafers from the third plurality are processed according to the second recipe.