Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Reexamination Certificate
2005-12-06
2005-12-06
Nguyen, Vincent Q. (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
C324S528000
Reexamination Certificate
active
06972573
ABSTRACT:
The present invention provides an inspection apparatus and an inspection method capable of inspecting at a high speed by using a sensor having flexibility and excellent productivity. When a circuit board100as a subject of inspection is selected, CAD data of the circuit wiring101on this circuit board100is analyzed to detect the position of the end of each wiring. Then, two or more sensor elements adjacent to the end (from which the voltage variation can be detected) are specified. The switching circuit16is controlled to connect the selected sensor elements to an output terminal12and to connect the remaining sensor elements to the GND terminal15.In this state, when an voltage is applied to one of the selected circuit wirings and then an inspection signal (voltage variation) is output from the output terminal12,it will be determined that no disconnection exists in the circuit wiring.
REFERENCES:
patent: 6097202 (2000-08-01), Takahashi
patent: 6703849 (2004-03-01), Ishioka et al.
Ishioka Shogo
Yamaoka Shuji
Nguyen Vincent Q.
OHT Inc.
Teresinski John
Westerman Hattori Daniels & Adrian LLP
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