Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2005-06-01
2008-11-04
Anderson, Matthew D. (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C327S018000, C327S119000, C375S232000, C375S327000
Reexamination Certificate
active
07447511
ABSTRACT:
A method and a device for equalizing mode selection are disclosed. The method comprises steps of: providing first sampling pulses in response to an equalized signal; providing second sampling pulses lagging behind the first sampling pulses for a pre-determined phase shift for sampling the equalized signal; establishing a first observing window and a second observing window according to the first sampling pulses and the second sampling pulses, so as to determine whether each of a plurality of equalizing modes is good or bad; and selecting one equalizing mode among the plurality of equalizing modes. The device comprises: a programmable equalizer, having a plurality of equalizing modes, receiving an original signal so as to output an equalized signal; a phase-locked loop, receiving a reference clock signal and a first control signal so as to output first sampling pulses and second sampling pulses; a data slicing device, coupled to the phase-locked loop and the programmable equalizer and receiving the first sampling pulses, the second sampling pulses and the equalized signal so as to output a first slicing signal and a second slicing signal; and a signal processing device, coupled to the data slicing device and receiving the first slicing signal and the second slicing signal so as to output the first control signal and a second control signal; wherein the signal processing device programs the programmable equalizer by using the second control signal so as to select an equalizing mode from the plurality of equalizing modes for the programmable equalizer.
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Hsu Kuo-Feng
Huang Ke-Chiang
Lee Jiunn-Yih
Liu Hsian-Feng
Anderson Matthew D.
King Justin
Mstar Semiconductor Inc.
Nguyen Hai V
WPAT. P.C.
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