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US 2003/0126488 A1Published application
Frequency signal enabling apparatus and method thereof
AssigneeWinbond Electronics Corp.
InventorsChie Yeon Chen, Chuang Huang Kuo
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AssigneeWinbond Electronics Corp.
InventorsChie Yeon Chen, Chuang Huang Kuo
Estimating the term…
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.
A frequency signal enabling apparatus for filtering input frequency signals whose pulse width is less than a predetermined threshold pulse width, comprising:
A frequency signal enabling method for fast enabling a digital IC when transferred from a power-saving mode to an operating mode, comprising the steps of:
Dependencies are inferred from the claim text.