Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2006-04-11
2006-04-11
Tse, Young T. (Department: 2637)
Pulse or digital communications
Equalizers
Automatic
C375S350000, C341S166000, C708S300000
Reexamination Certificate
active
07027498
ABSTRACT:
A system and method for improving the performance of digital filters. The data bandwidth and spectral control are improved by adaptively selecting ramp-up and ramp-down symbols based on the actual filtered data. Thus, the energy in the truncated tail of the filter is minimized for a given filter design. The invention is of particular utility in systems that filters intermittent data streams, thus requiring the filter to energize and deenergize repeatedly.
REFERENCES:
patent: 5282226 (1994-01-01), Critchlow
patent: 5621763 (1997-04-01), Walczak et al.
patent: 6625227 (2003-09-01), Shull et al.
patent: 200069704 (2000-11-01), None
Brown Daniel R.
Chang Edith
CynTrust Communications, Inc.
Dan Brown Law Office
Tse Young T.
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