Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Generating sawtooth or triangular output
Reexamination Certificate
2003-12-25
2008-03-04
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Generating sawtooth or triangular output
C327S131000, C327S172000, C327S175000
Reexamination Certificate
active
07339406
ABSTRACT:
A sawtooth wave generating apparatus includes a base frequency generating section and a frequency generating section for generating the frequency of a reference signal, a sawtooth wave forming section which forms a sawtooth wave based on the reference signal, a voltage comparator which compares the voltage value of the sawtooth wave formed by the sawtooth wave forming section with a predetermined voltage value, a phase comparator which compares the phase of the output signal from the voltage comparator with the phase of the reference signal, and a low-pass filter (LPF) which cuts out a high frequency component of the output signal from the phase comparator, and feeds back the resulting output signal to the sawtooth wave forming section.
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Knopper G. J. ; “Triggered Sawtooth Generator”, Elektor Electronics, Elektor Publishers Ltd., Canterbury, GB, vol. 17. No. 191, Jul. 1, 1991, pp. 66-67, XP000235698.
Harness & Dickey & Pierce P.L.C.
Le Dinh T.
Seiko Epson Corporation
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