Communication in high rise buildings
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 8, 2002
Grant Date -
N/A
app pub date -
Jun 19, 2000
filing date -
Jun 19, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for communicating between computers that are at a number of different locations in a large multi-story building in which radio transmission is achieved through stairwell shafts and through windows along a zone outside of the building. This system employs communication through spread spectrum transceivers and a set of directional antennas. At each station, one of the antennas is circular polarized and the other is linear polarized with a horizontal electrical component to facilitate reflection off the floors of the building. The spread spectrum is a hybrid frequency hopped and direct sequence modulated signal.
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Family
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Cited Art Landscape
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