Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1989-11-06
1992-07-07
Coles, Sr., Edward L.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
375 23, 359181, 359158, 34087024, H04B 1010
Patent
active
051287927
ABSTRACT:
A self-synchronizing infra-red communication system. The coding scheme involves transmitting a series of pulses, the separations between successive pulses representing the same data. Even though the separations between successive pulses all represent the same data, the separations are all different; it is this feature which allows for self-synchronization. Arrival times of successive pulses are recorded; the arrival times represent the receipt not only of transmitted pulses, but also of detected noise. The time differences between all arrival times (not only successive arrival times) are checked for consistency with predetermined allowable time-interval ranges which can separate successively transmitted pulses in a data sequence. When a sufficient number of such checks have been made, representing a sufficient degree of redundancy, it is possible to derive the data value represented by all of the pulse separations.
REFERENCES:
patent: 4357634 (1982-11-01), Chung
patent: 4399564 (1983-08-01), Cowen
patent: 4430652 (1984-02-01), Rothenbuhler
patent: 4644563 (1987-02-01), Ohishi
patent: 4972435 (1990-11-01), Ho
Guillaume Keith
Teich Rudor M.
Coles Sr. Edward L.
Inncom International Inc.
Pascal L.
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