| US 7,518,487 B2 | ||
| Power line communication system | ||
| Yeshayahu Zalitzky, Raanana (Israel); Jacob Keret, Kfar Shmaryahu (Israel); and Ofir Efrati, Raanana (Israel) | ||
| Assigned to Main.Net Communications Ltd., RaAnana (Israel) | ||
| Filed on Nov. 30, 2005, as Appl. No. 11/290,794. | ||
| Application 11/290794 is a continuation of application No. 10/344474, granted, now 6,995,657, previously published as PCT/IL01/00745, filed on Aug. 12, 2001. | ||
| Claims priority of provisional application 60/224900, filed on Aug. 14, 2000. | ||
| Prior Publication US 2006/0077047 A1, Apr. 13, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G05B 11/01 (2006.01); H04M 11/04 (2006.01) | ||
| U.S. Cl. 340—310.11 [340/310.12; 340/310.13; 340/538; 340/538.11; 340/538.12] | 35 Claims |
| 1. Communication apparatus, comprising:
a network of power lines; and
first, second and third transceivers, coupled to the network, the first transceiver being adapted to transmit a first signal
over the network to the second transceiver within a selected frequency band at a transmission power level sufficiently strong
that the first signal can be decoded by the second transceiver, but is attenuated sufficiently when it reaches the third transceiver
so that the third transceiver can receive a second signal over the network in the selected frequency band substantially without
interference by the first signal.
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