Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1993-08-26
1995-07-25
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 74, 327 70, 327 63, H03K 524
Patent
active
054365821
ABSTRACT:
A comparator device is designed for comparing the signal levels of first and second input signals to provide respective resultant comparator outputs independently, which comparator device is featured in avoidance of occurrence of simultaneous low levels of the comparator signals at all possible conditions of the comparator outputs. The comparator device includes first and second comparator which independently output resultant comparator outputs having either a high (H) level or a low (L) level as results of comparison of the signal levels of the first and second input signals while taking one of the input signals as a reference, and have offset characteristics and hysteresis characteristics so that the comparator outputs, either H level or L level, can be fixedly determined when the first and second input signal levels are equal to each other. The first input signal is applied to one of the input terminal of the first comparator and the other input terminal of the second comparator with a different polarity, and the second input signal is applied to the other input terminal of the first comparator and one of the input terminal of the second comparator with a different polarity.
REFERENCES:
patent: 3916327 (1975-10-01), Lampen et al.
patent: 4945261 (1990-07-01), Wright
Callahan Timothy P.
Le Dinh
Matsushita Electric - Industrial Co., Ltd.
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