Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2007-07-24
2007-07-24
Barbee, Manuel L. (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C324S622000, C375S226000
Reexamination Certificate
active
10538520
ABSTRACT:
An orthogonal signal generating unit converts a signal to be measured into two orthogonal signals which are two signals whose phases are orthogonal to one another. An instantaneous phase calculating unit calculates an instantaneous phase based on the two orthogonal signals within a range between a lower limit phase value set in advance and an upper limit phase value set in advance. A differential value detecting unit detects a differential value of the instantaneous phase. A differential value correcting unit corrects the differential value, and outputs a corrected differential value when the differential value of the instantaneous phase is over the range dependent on the lower limit phase value and the upper limit phase value. An offset component eliminating unit eliminates an offset component included in the corrected differential value from the corrected differential value output from the differential value correcting unit, and outputs a differential value from which the offset component has been eliminated. An integration unit determines a jitter amount of the signal to be measured by integrating the differential value which is output from the offset component eliminating unit, and from which the offset component has been eliminated.
REFERENCES:
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ITU-T, Telecommunication Standardization Sector of ITU; International Telecommunication Union; G. 825; Series G: Transmission Systems and Media Digital Systems and Networks; Mar. 2000; pp. 3-4.
Anritsu Corporation
Barbee Manuel L.
Frishauf Holtz Goodman & Chick P.C.
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