Multiplex communications – Wide area network – Packet switching
Patent
1987-04-07
1988-12-20
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 85, H04J 302
Patent
active
047929464
ABSTRACT:
A local area network for digital information transmission to and from each of a plurality of building units in an area, such as homes in a neighborhood is provided, wherein all connections between units are wireless. Each unit is provided with and fm transceiver station, which is connected with an electrical system in said unit, such as a security system or a power distribution system in such a way that information can be gathered from said system and commands delivered to said system. Each transceiver is adapted to operate at a power level and on a frequency which does not require an FCC license. Each transceiver includes programmable means adapted to cause said transceiver to recognize transmission specifically addressed to it by other stations in the network, and to cause said transceiver to generate and send transmissions specifically addressed to other transceivers in the network. Thus, the transceivers on the network are serially linked in a loop, and commands for the system in any building unit and data from any system in any building unit may be passed from unit to unit about the loop in either of two directions.
REFERENCES:
patent: 4527270 (1985-07-01), Sweeton
patent: 4639914 (1987-01-01), Winters
patent: 4665519 (1987-05-01), Kirchner et al.
Chin Wellington
Olms Douglas W.
Spectrum Electronics, Inc.
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