Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1997-11-14
1999-05-11
Negash, Kinfe-Michael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359155, 359172, H04B10/00
Patent
active
059033738
ABSTRACT:
A method and apparatus is provided of locating a portable remote station transceiving a diffuse infrared communicated signal within an enclosed area containing a plurality of stationary infrared transceivers interconnected with a central controller. The method includes the steps of detecting a particular transmission of the diffuse infrared communicated signal from the portable remote station within the enclosed area by the plurality of stationary transceivers and measuring a parametric value of the particular signal received by each stationary transceiver of the plurality of stationary transceivers. The method further includes the step of locating the portable remote station based upon differences in the parametric value measured at each stationary transceivers.
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Graeme, Circuit options boost photodiode bandwidth, EDN 155 (May 21, 1992).
Oschmann Ellen L.
Welch Jeffrey Peter
Negash Kinfe-Michael
Spectrix Corporation
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