Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Pulse multiplication or division
Reexamination Certificate
2011-04-12
2011-04-12
Lam, Tuan (Department: 2816)
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Pulse multiplication or division
C377S048000
Reexamination Certificate
active
07924965
ABSTRACT:
A clock generator is illustrated. The clock generator mentioned above includes a multimodulus frequency divider and a delta-sigma modulator. The multimodulus frequency divider is archived by switching the phase thereof. The multimodulus frequency divider increases the operating frequency of the clock generator effectively, and has a characteristic with half period resolution for reducing the jitter of an output clock signal when its spectrum is spread. Besides, the delta-sigma modulator increases the accuracy of the triangle modulation and reduces error of quantization by adding a few components therein. Thus, the clock generator could be expanded to a programmable clock generator.
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Cheng Kuo-Hsing
Chu Yuan-Hua
Huang Hong-Yi
Tseng Wei-Sheng
Industrial Technology Research Institute
Jianq Chyun IP Office
Lam Tuan
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