Frequency signal enabling apparatus and method thereof

Details Frequency signal enabling apparatus and method thereof Frequency signal enabling apparatus and method thereof

2005-09-06

2005-09-06

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Regenerating or restoring rectangular or pulse waveform

C327S165000, C327S034000, C327S037000

Reexamination Certificate

active

06940326

ABSTRACT:
The present invention discloses a frequency signal enabling apparatus and the method thereof for filtering noises and glitch when entering an operating mode from a power-saving mode. When the pulse width of the input frequency signal is smaller than the threshold pulse width, it will be considered as a noise and be filtered out. When the high-level pulse width of the input frequency signal is greater than the threshold, a first short pulse will be generated. When the low-level pulse width of the input frequency signal is greater than the threshold, a second short pulse will be generated. The relative position of the first short pulse and the second short pulse will be used to reconstruct the frequency signal, and the reconstructed frequency signal may serve as the operating frequency of the microprocessor or other digital IC.

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