Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2011-01-11
2011-01-11
Ho, Duc C (Department: 2465)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S310000, C455S422100
Reexamination Certificate
active
07869377
ABSTRACT:
A method for estimating a subjective quality of a signal carried over a transmission path. The transmission path is monitored at periodic intervals. For each of the periodic intervals, at least one impairment factor is measured, an estimated effect of each of the impairment factors is determined using at least one value, and an estimated subjective quality of the signal is determined using the estimated effect of each of the impairment factors. Further, an estimated combined subjective quality of the signal is determined using the estimated subjective quality for at least two of the periodic intervals.
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Ho Duc C
Smith Gambrell & Russell
Telchemy, Inc.
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