Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By presence or absence pulse detection
Reexamination Certificate
2009-06-23
2010-12-28
Lam, Tuan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By presence or absence pulse detection
C327S020000, C327S024000, C327S027000
Reexamination Certificate
active
07859313
ABSTRACT:
An edge-missing detector structure includes a first detector, a first delay unit, a first logic gate, a second detector, a second delay unit, and a second logic gate. After being input separately into the edge-missing detector structure, a first reference signal and a first clock signal are detected by the first and second detectors and then subjected to cycle suppression by the first and second logic gates, respectively, so as to generate a second reference signal and a second clock signal which present a phase difference less than 2π. Moreover, the edge-missing detector structure generates a compensative current corresponding to the number of occurrences of cycle suppression. Thus, a phase-locked loop (PLL) using the edge-missing detector structure can avoid cycle slip problems and achieve fast acquisition of phase lock.
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Chien Ting Hsu
Huang Chun-Ming
Juang Ying-Zong
Lin Chi Sheng
Wey Chin-Long
A. Marquez, Esq. Juan Carlos
Lam Tuan
National Chip Implementation Center National Applied Research La
Stites & Harbison PLLC
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