Pulse or digital communications – Equalizers
Reexamination Certificate
2011-04-05
2011-04-05
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Equalizers
C375S231000, C375S232000
Reexamination Certificate
active
07920621
ABSTRACT:
Equalization of an incoming data signal can be controlled by sampling that signal at times when data values in that signal should be stable (“data samples”) and when that signal should be in transition between successive data values that are different (“transition samples”). A transition sample that has been taken between two successive differently valued data samples is compared to a reference value (which can be one of those two data samples). The result of this comparison can be used as part of a determination as to whether to increase or decrease equalization of the incoming data signal.
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J-S. Choi et al., “A 0.18 μm CMOS 3.5-Gb/s Continuous-Time Adaptive Cable Equalizer Using Enhanced Low-Frequency Gain Control Method,” IEEE Journal of Solid-State Circuits, vol. 39, No. 3, Mar. 2004, pp. 419-425.
Chan Doris Po Ching
Hoang Tim Tri
Lai Tin H.
Maangat Simardeep
Shumarayev Sergey
Altera Corporation
Fan Chieh M
Joseph Jaison
Ropes & Gray LLP
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