Optical communications – Optical communication over freee space
Reexamination Certificate
2005-02-01
2005-02-01
Phan, Hanh (Department: 2633)
Optical communications
Optical communication over freee space
C398S135000, C398S119000, C398S127000, C398S136000, C398S202000, C398S208000, C398S138000, C398S025000, C398S026000, C375S355000, C375S365000
Reexamination Certificate
active
06850709
ABSTRACT:
The present invention provides an apparatus and a method for improved connectivity in wireless optical networks. Therefore at least two or more receiving units are used which receive an infrared signal and convert it to a digital signal. The digital signals represent data in the form of frames whereby each frame comprises at least a data field and a header field containing a preamble. A selector determines a measure related to the signal-to-noise ratio of the preamble and compares the measures in order to select the best suited signal for further processing.
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Gfeller Fritz
Ingham Brian R.
Walter Hirt
Ference & Associates
Internatioal Business Machines Corporation
Phan Hanh
LandOfFree
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