Data processing: measuring – calibrating – or testing – Calibration or correction system – Position measurement
Reexamination Certificate
2008-07-15
2008-07-15
Barbee, Manuel L (Department: 2857)
Data processing: measuring, calibrating, or testing
Calibration or correction system
Position measurement
C073S001790, C073S001750
Reexamination Certificate
active
11614386
ABSTRACT:
First, it is confirmed that the contactor1ais not damaged. Next, an initial preset signal PR is supplied at the state in which the contactor1ais contacted to the master work MW. For this reason, CPU stores the reference value in EEPROM. If the timing signal is supplied at the state in which the contactor1ais contacted to the non-defective object W, the CPU obtains the measurement value and corrects the measurement value by the reference value. When the difference between the reference value obtained during the measurement of the actual object W and the previous reference value stored in EEPROM is more than a predetermined value, it is judged that the contactor1ais damaged, and warning signal is output. As this warning signal, the judgment signal Hi and the judgment signal Lo become from a low level to a high level.
REFERENCES:
patent: 5610846 (1997-03-01), Trapet et al.
patent: 2003/0065481 (2003-04-01), Fujishima et al.
patent: 2000-9412 (2000-01-01), None
patent: 2002-131037 (2002-05-01), None
patent: 2004-246408 (2004-09-01), None
Barbee Manuel L
Keyence Corporation
Kilyk & Bowersox P.L.L.C.
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