Pulse or digital communications – Systems using alternating or pulsating current
Patent
1994-08-02
1996-05-14
Chin, Stephen
Pulse or digital communications
Systems using alternating or pulsating current
370 953, 3701101, H04L 2700
Patent
active
055175287
ABSTRACT:
A method and apparatus for single signal, multiple channel digital information transfer through pulses with time slot allocation. The apparatus consists of one or more transmitting devices and one or more receiving devices. Multiple source signals are each allocated a unique time slot between successive synchronization pulses. Digital signals from each source are converted to positive analog information spikes which are combined in their respective time slot with a negative reference spike of uniform magnitude to form an information pulse. The total signal, which consists of successive synchronization pulses interspersed with information pulses for each signal source, each within its allocated time slot, is transmitted to the receivers. Each receiving device extracts the maximum information spike values and the reference spike values for one or more of the signal sources. The information spike values and the reference spike values are converted to digital and a comparison of the transmitted reference spike values with the received reference spike values is used to calibrate the received information spike values for each signal source.
REFERENCES:
patent: 4466589 (1988-08-01), Fisher
patent: 5220557 (1993-06-01), Kelley
patent: 5274672 (1993-12-01), Weiss
patent: 5367536 (1994-11-01), Tsujimoto
patent: 5369669 (1994-11-01), Tombal et al.
patent: 5390185 (1995-02-01), Hooijmans et al.
Chin Stephen
Ghebretinsae T.
International Automated Systems, Inc.
Nelson J. David
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