Claims
- 1. A communication system operative over a common medium, the system comprising:
a. a plurality of transceivers, each transceiver comprising:
(1) a resonant circuit; (2) an antenna coupled to the resonant circuit; (3) a transmitter; and (4) a receiver; and b. a monitor comprising:
(1) a first transmitter; (2) a first receiver; and (3) a processor that performs a method comprising:
transmitting into the medium from the first transmitter a first frequency for a first duration; after lapse of the first duration, receiving via the first receiver a response signal from the medium from at least one of the resonant circuits; determining a second frequency from the received response signal; and performing transceiver communication via the medium using the second frequency.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a Continuation-In-Part application of, and claims priority from, U.S. patent application Ser. No. 09/233,755 by Rodgers, et al., filed on Jan. 20, 1999, which is a Continuation-In-Part application of U.S. patent application Ser. No. 09/088,924, by Rodgers, et. al, filed on Jun. 2, 1998. These related applications are incorporated herein by reference.
Divisions (1)
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Number |
Date |
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Parent |
09372274 |
Aug 1999 |
US |
Child |
09921956 |
Aug 2001 |
US |
Continuation in Parts (2)
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Date |
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09233755 |
Jan 1999 |
US |
Child |
09372274 |
Aug 1999 |
US |
Parent |
09088924 |
Jun 1998 |
US |
Child |
09233755 |
Jan 1999 |
US |