Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1991-07-18
1993-03-30
Nguyen, Vinh
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324 731, 371 151, G01R 3100
Patent
active
051987570
ABSTRACT:
An apparatus for testing a semiconductor integrated circuit by using probe lines and sense lines, has a selection device for applying a selective signal in sequence to one of the probe lines, and electronic switch devices incorporated in the integrated circuit so that the electronic switch devices and intersections, where the probe lines and sense lines intersect each other, are in one-to-one correspondence and the electronic switch devices can feed signals to their corresponding sense lines in response to selective signals applied to the probe lines. Each electronic switch device is connected to test points in the integrated circuit and connected to its corresponding sense line. Many level quantization devices are provided for generating many-level quantized signal, corresponding to one of combinations of binary signals on the test points connected to the electronic switches of each electronic switch device, to its corresponding sense line, and two-level quantization devices convert the many-level quantized signal, generated on each sense line, to reproduced binary signals corresponding to the one of combinations of the binary signals on the test points.
REFERENCES:
patent: 4749947 (1988-06-01), Gheewala
patent: 4975640 (1990-12-01), Lipp
patent: 5065090 (1991-11-01), Gheewala
Megachips Corporation
Nguyen Vinh
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