Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Patent
1994-02-03
1995-11-07
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
327176, 327263, 327264, 327393, 327395, 327400, H03K 307, H03K 17296, H03H 1126
Patent
active
054650623
ABSTRACT:
A transition detection circuit is provided comprising input means receiving the signal to be monitored for generating a first pulse having a first predetermined pulsewidth when a transition occurs in the signal being monitored; and output means responsive to the first pulse from the input means for generating a second pulse having a second predetermined pulsewidth which is less than the first predetermined pulsewidth. The present invention permits a large number of signals to be monitored for transition yet provide a highly precise output pulsewidth, all with a minimum of circuitry. Preferably the input means include a plurality of input channels, each channel being assigned to a different signal being monitored and each channel providing the first predetermined pulsewidth using simple, non-precision time delay circuits. The output state employs a single, high precision time delay circuit to provide the second predetermined pulsewidth.
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Callahan Timothy P.
Phan Trong
Rohm Corporation
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