Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2011-01-11
2011-01-11
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
C375S257000
Reexamination Certificate
active
07868804
ABSTRACT:
The present invention relates to emphasizing and de-emphasizing of an analog data signal. Using a main analog driver a data signal indicative of bit values of binary data is converted into a first analog data signal. A second data signal is determined by delaying the data signal a predetermined time interval and inverting the delayed data signal. Using a de-emphasis driver, the second data signal are converted into a second analog data signal, wherein the second analog data signal is additive to the first analog data signal if the data signal and the second data signal are indicative of a same bit value, and wherein the second analog data signal is subtractive to the first analog data signal if the data signal and the second data signal are indicative of an opposite bit value. The first analog data signal is emphasized or de-emphasized by superposing the first analog data signal and the second analog data signal.
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Lui, Jin; et al “Equalization in High-Speed Communication Systems” IEEE Circuits and Systems Magazine, vol. 4, No. 2, 2004, pp. 4-17.
Khoury Elie
Sessions D. C.
Jean-Pierre Peguy
NXP B.V.
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