Optical wireless communication method and apparatus

Details Optical wireless communication method and apparatus Optical wireless communication method and apparatus

1997-01-02

1999-05-11

Mullen, Thomas

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359158, 359172, H04J14/00

Patent

active

059033690

ABSTRACT:
An optical wireless communication method and apparatus that uses Manchester code via a connector connected with a personal computer. The Manchester data from the computer are converted to NRZ transmission data to be temporarily stored and read out. A frame of the read out data is appended with a head leader identifying a sender and end data at the head and end of the frame to be converted to the DMI transmission optical data. The optical data inserted between the head leader and END data are receivable being distinguished from the optical signal of the sender and optical noises. The DMI entitative data removed from the head leader and end data are converted to data of the Manchester code in the reverse course to the sender to be delivered as the Manchester data via a connector. As the optical data with the head leader and end data are distinguishable from the optical signal of the sender and optical noises, high sensitive optical receivers are available.

REFERENCES:
patent: 4292626 (1981-09-01), Smithlin
patent: 4905257 (1990-02-01), Palkert et al.
patent: 5390039 (1995-02-01), Yamamoto et al.
patent: 5600471 (1997-02-01), Hirohashi et al.
patent: 5706115 (1998-01-01), Hirayama et al.

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