Reflectometer with echo canceller

Details Reflectometer with echo canceller Reflectometer with echo canceller

2006-03-14

2006-03-14

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S189000, C702S191000, C370S286000

Reexamination Certificate

active

07013226

ABSTRACT:
Various embodiments are described for an improved reflectometer and/or a modem or other device which may include an improved reflectometer. An apparatus may include a pulse transmitter to transmit a pulse to a line to be tested, a receiver adapted to receive a reflection of the transmitted pulse, and a zero-echo canceling system coupled to the transmitter and receiver. The zero-echo canceling system may be adapted to at least partially cancel a received zero-echo by generating a zero-echo canceling signal based on the transmitted pulse and to calculate an error signal as a difference between the zero-echo and the zero-echo canceling signal.

REFERENCES:
patent: 4571465 (1986-02-01), Brie et al.
patent: 4602133 (1986-07-01), O'Neill
patent: 6944290 (2005-09-01), Georgiev
patent: 2002/0048265 (2002-04-01), Glass
patent: 2002/0097863 (2002-07-01), Rahamim et al.

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