Excavating
Patent
1997-11-24
1999-04-27
Nguyen, Hoa T.
Excavating
371 221, 371 225, G01R 3128
Patent
active
058987037
ABSTRACT:
The present invention includes a main circuit and a circuit to be tested. An observation node and a control node are connected to the circuit to be tested. A pin is connected via an analog switch and a digital switch to these nodes. The test circuit controls the switch and input and output of test data. The test circuit has one bi-directional digital pin. A control signal and observation data are input to and output from an analog circuit through an analog test pin.
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patent: 5146161 (1992-09-01), Kiser
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patent: 5513186 (1996-04-01), Levitt
patent: 5557236 (1996-09-01), Monti
Mitsubishi Denki & Kabushiki Kaisha
Nguyen Hoa T.
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