Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Having specific delay in producing output waveform
Patent
1998-07-31
1999-12-14
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Having specific delay in producing output waveform
327278, 327284, H03K 513
Patent
active
060022868
ABSTRACT:
Programmable time delay apparatus includes a plurality of similar components (10) which determine the total time delay of the apparatus. These components have gate units (31.sub.0 -31.sub.n, 32.sub.0 -32.sub.n, 33.sub.0 -33.sub.n, 34.sub.0 -34.sub.n) coupled thereto which, in response to a control signal (b.sub.0 -b.sub.n) applied to each component, either electrically couples the component to the apparatus or electrically removes of the component from the apparatus. In a first embodiment, the control signals (b.sub.0 -b.sub.n) place time delay components (10) in a series configuration, the total time delay being the sum of the time delays of each series-coupled component (10). In the second and third embodiment, the resistors (47.sub.0 -47.sub.n) and the capacitors (53.sub.0 -53.sub.n), respectively, are coupled in a capacitance charging circuit (47.sub.0 -47.sub.n, 43; 52, 53.sub.0 -53.sub.n), the coupled elements controlling the charging rate and, consequently, the time delay of the apparatus. By coupling the apparatus in a ring configuration (FIG. 6), a counter unit (63), counting the number of signal delays through the delay apparatus (61) can lengthen the programmed time delay.
REFERENCES:
patent: 5051630 (1991-09-01), Kogan et al.
patent: 5068553 (1991-11-01), Love
patent: 5107153 (1992-04-01), Osaki et al.
patent: 5281927 (1994-01-01), Parker
Cline Danny R.
Hii Francis
Callahan Timothy P.
Donaldson Richard L.
Hoel Carlton H.
Holland Robby T.
Shin Eunja
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