Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – Having selection between plural continuous waveforms
Reexamination Certificate
2011-08-30
2011-08-30
Lam, Tuan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
Having selection between plural continuous waveforms
C327S298000
Reexamination Certificate
active
08008949
ABSTRACT:
A clock selector operative on two clocks operating on different domains and responsive to a SELECT input provides a transition from a first clock to a second clock, and from a second clock to a first clock with a dead zone therebetween. The delay is provided by a doublet register having a first register coupled to a second register, the two registers operative on one of the clock domains. Additionally, a clock selector is operative on two clocks which are each accompanied by a clock availability signal where the state machine provides a variety of states to create a dead zone between selections, and to bring the state machine to a known state until a clock signal is again available.
REFERENCES:
patent: 5099141 (1992-03-01), Utsunomiya
patent: 5579350 (1996-11-01), Furukawa et al.
patent: 6563349 (2003-05-01), Menezes et al.
patent: 7427881 (2008-09-01), Starr et al.
Chesavage Jay A.
File-EE-Patents.com
Lam Tuan
Redpine Signals, Inc.
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