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Title:
COMPUTING ELEMENT FOR PROVIDING INTEGRATED VALUE OF AVERAGE VALUE
Document Type and Number:
Japanese Patent JP3453826
Kind Code:
B2
Abstract:

PURPOSE: To provide the computing element which can provide the integrated value or average value of input signals with high accuracy without any error in comparison with conventional analog and digital computing elements and enables the insulation and hold of signals by using low-priced circuit elements in comparison with the purely analog computing element.
CONSTITUTION: This computing element is provided with an input inverter circuit 2a for inverting the input signal with a common voltage as a center, switch 3 for selectively supplying either the output of that input inverter circuit 2a or the input signal to an integration circuit 4, two comparators 5a and 5b for respectively comparing the output of the integration circuit 4 with two high and low reference voltages deviated from the common voltage to (+) and (-) sides just for the same potential, switch driving circuit 6 for changing over the switch 3 each time any one of outputs from those respective comparators 5a and 5b is inverted, and counter 12 for performing a counting operation synchronously with the inversion of the outputs, from the comparators 5a and 5b.


Inventors:
Yoshiaki Noda
Application Number:
JP33587093A
Publication Date:
October 06, 2003
Filing Date:
December 28, 1993
Export Citation:
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Assignee:
SHIMADZU CORPORATION
International Classes:
G06G7/18; (IPC1-7): G06G7/18
Domestic Patent References:
JP63276317A
JP5922441A
JP5922169A
JP5920860A
Attorney, Agent or Firm:
Yoshiro Kurauchi