Pulse or digital communications – Receivers – Automatic baseline or threshold adjustment
Reexamination Certificate
2006-05-16
2006-05-16
Fan, Chieh M. (Department: 2634)
Pulse or digital communications
Receivers
Automatic baseline or threshold adjustment
C375S316000, C375S329000
Reexamination Certificate
active
07046742
ABSTRACT:
A system and method are provided for temporally analyzing serial input data. The method comprises: establishing three thresholds; distinguishing present (first) high probability one bit value estimates; distinguishing present high probability zero bit value estimates; and, using a temporal analysis of bit values to distinguish indefinite present bit value estimates. Using a temporal analysis of bit values includes: distinguishing a present bit estimate below first threshold and above the third threshold as a zero if both the past (second) and the future (third) bits are one values and otherwise as a one; and, distinguishing a present bit value estimate above the second threshold and below the third threshold as a one if both the past and future bits are a zero value and otherwise as a zero.
REFERENCES:
patent: 3670304 (1972-06-01), Andresen et al.
Applied Micro Circuits Corporation
Fan Chieh M.
File Erin M.
Law Office of Gerald Maliszewski
Maliszewski Gerald
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