Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Reexamination Certificate
2009-03-19
2010-11-02
Cox, Cassandra (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
C327S258000
Reexamination Certificate
active
07825712
ABSTRACT:
A multi-phase clock signal generating circuit includes a phase correction block configured to receive multi-phase clock signals and produce a plurality of interpolated phase clock signal groups in which the phases of the multi-phase clock signals are differently controlled. The multi-phase clock signals are out of phase with each other. A clock control block is configured to produce output multi-clock signals by selectively outputting one among the interpolated phase clock signal groups using a digital control signal having a plurality of bits which are produced based on phase differences of the multi-phase clock signals.
REFERENCES:
patent: 6570425 (2003-05-01), Yamaguchi
patent: 7495481 (2009-02-01), Kodama
patent: 2003/0210758 (2003-11-01), Lee et al.
patent: 2005/0053180 (2005-03-01), Nose et al.
patent: 2008/0129362 (2008-06-01), Kawai
patent: 2008-124714 (2008-05-01), None
Cox Cassandra
Hynix / Semiconductor Inc.
Ladas & Parry LLP
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