Electrical computers and digital processing systems: support – Clock – pulse – or timing signal generation or analysis – Correction for skew – phase – or rate
Reexamination Certificate
2003-02-28
2008-03-04
Perveen, Rehana (Department: 2116)
Electrical computers and digital processing systems: support
Clock, pulse, or timing signal generation or analysis
Correction for skew, phase, or rate
C713S500000
Reexamination Certificate
active
07340635
ABSTRACT:
A register-based de-skew system and method for a source synchronous receiver circuit domain. In one embodiment, a de-skew strobe generator operates responsive to at least one incoming strobe signal in order to generate a plurality of one-hot de-skew strobe signals. A plurality of de-skew registers receive the same input data pulses from a transmitter circuit domain. By clocking the de-skew registers with the one-hot de-skew strobe signals, the input data pulses are stretched into spread data pulses having an extended timing window. A plurality of multiplexers multiplex the spread data pulses, whereupon the multiplexed data is registered using a clock signal associated with the receiver circuit domain.
REFERENCES:
patent: 5768529 (1998-06-01), Nikel et al.
patent: 6199135 (2001-03-01), Maahs et al.
patent: 6292116 (2001-09-01), Wang et al.
patent: 7028171 (2006-04-01), Sheaffer
Hewlett--Packard Development Company, L.P.
Perveen Rehana
Yanchus Paul
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