Patent ID: 6356797
Filing Date: 2002-03-12
Classification: G05B,G06Q,Y02P

Abstract:
A method for scheduling a plurality of testing lots on a plurality of testing machines of a testing factory, comprising:performing scheduled calculations of a first priority lot of said plurality of testing lots and selecting that testing machine of said plurality of testing machines which has an earliest complete time of said first priority lot, said first priority lot being exchanged with a first running lot of said selected testing machine when a testing piece of said first running lot is completed; performing scheduled calculations of a second priority lot of said plurality of testing lots and selecting a next testing machine of said plurality of testing machines which has an earliest complete time of said second priority lot, said second priority lot being exchanged with a second running lot of said next selected testing machine when said second running lot is completed; performing scheduled calculations of normal lots of said plurality of testing lots with a reduced setup process when at least two of said plurality of testing machines can be used and need to be setup, said reduced setup process further comprises: selecting ones of said plurality of testing machines in which running lots of said selected ones of said plurality of testing machines are different from said normal lots and said selected ones of said plurality of testing machines have a first earliest complete time of said normal lots; selecting further ones of said plurality of testing machines in which a running lot of said further ones of said plurality of testing machines have a repeated type and said further ones of said plurality of testing machines have a next earliest complete time of said normal lots; and comparing said running lots of said ones and further ones of said plurality of testing machines with said normal lots and selecting said running lots of said ones and further ones of said plurality of testing machines with a lowest ranking of said normal lots.