Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se
Reexamination Certificate
2006-08-29
2006-08-29
Nguyen, Vincent Q. (Department: 2858)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
C324S539000, C324S543000, C324S534000, C702S158000
Reexamination Certificate
active
07098645
ABSTRACT:
An offline phase of a cable length measuring method involves a determination of a plurality of preset frequency test signals for facilitating the length measurement of the cable based on a maximum measurable length of the cable. An online phase minimally involves a measurement of the length of the cable based on a first reflected phase shift between a first preset frequency test signal as transmitted at a transmission end of the cable and a first preset frequency reflection signal representative of a reflection of the first preset frequency test signal at a reflection end of the cable, and based on a second reflected phase shift between the second preset frequency test signal as transmitted at the transmission end of the cable and a second preset frequency reflection signal representative of a reflection of the second preset frequency test signal at the reflection end of the cable.
REFERENCES:
patent: 2003/0222654 (2003-12-01), Furse et al.
patent: 2004/0230383 (2004-11-01), Bechhoefer et al.
patent: 2005/0242825 (2005-11-01), Bottman et al.
Doddavaram Ravi-Kishore
Pandya Harshang
Zhu Xing
Agilent Technologie,s Inc.
Nguyen Vincent Q.
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