Optical wireless data transmission system and optical wireless d

Details Optical wireless data transmission system and optical wireless d Optical wireless data transmission system and optical wireless d

1995-04-27

1997-02-04

Chin, Wellington

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359143, 359172, 34082572, 370491, H04B 1000

Patent

active

056004710

ABSTRACT:
An optical wireless transmission system providing short-distance communication, such as for linking a personal computer to a LAN, utilizes direct baseband modulation of optical signals, but provides simultaneous bidirectional transmission of data between a pair of optical transmitting/receiving units while also enabling a data clock signal to be easily regenerated from a received optical signal. Effects of signal noise due to artificial illumination are eliminated by a suitable choice of transmission bandwidth, and bandpass filtering of a received data signal.

REFERENCES:
patent: 3742225 (1973-06-01), Sick et al.
patent: 4850044 (1989-07-01), Block et al.
patent: 5075792 (1991-12-01), Brown et al.
patent: 5247380 (1993-09-01), Lee et al.
patent: 5349463 (1994-09-01), Hirohashi et al.
patent: 5408350 (1995-04-01), Perrier et al.

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