Pulse signal generating device

Details Pulse signal generating device Pulse signal generating device

1997-01-23

1998-12-08

Lam, Tuan T.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

327171, H03K 708

Patent

active

058475893

ABSTRACT:
Pulse signal generating device includes a duty cycle calculator for calculating a target duty cycle at predetermined intervals, a duty cycle comparator for making a comparison between the target duty cycle calculated by the duty cycle calculator and a current duty cycle of a pulse signal being currently output from the device, and a pulse signal adjuster. The duty cycle comparator determines whether the target duty cycle has presented a variation (increase or decrease) from the current duty cycle by over a predetermined value. Once the duty cycle comparator detects that a difference between the target duty cycle and the current duty cycle is more than the predetermined value, the pulse signal adjuster adjusts the pulse signal, using a pulse rise point immediately before the detection as an adjustment reference point, in such a manner that the pulse signal assumes a duty cycle corresponding to the target duty cycle.

REFERENCES:
patent: 3836858 (1974-09-01), Kitano
patent: 5144265 (1992-09-01), Petzold
patent: 5631592 (1997-05-01), Schwarz et al.

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