Protocol with control bits and bytes for controlling the order o

Details Protocol with control bits and bytes for controlling the order o Protocol with control bits and bytes for controlling the order o

1992-06-24

1996-01-30

Lee, Thomas C.

Boots, shoes, and leggings

39520017, 395800, 364DIG1, 3642304, 3642408, 34082505, H04B 300

Patent

active

054886937

ABSTRACT:
A protocol controls communications between a master unit and a plurality (M) of slave units connected thereto. The master unit sends a downlink message over a first communication path to the M slave units, the downlink message including a number N of information bytes, where N.gtoreq.M, each byte except a last byte comprising a data portion followed by a first predetermined control bit and the last byte comprising a status portion followed by a second predetermined control bit. The master unit receives uplink messages over a second communication path from the M slave units, the uplink messages having the same format as downlink messages. A third communication path connects between the master unit and the M slave units enabling a first slave unit to signal other slave units of the first slave unit's desire to send information to the master unit.

REFERENCES:
patent: 3728681 (1973-04-01), Fuller et al.
patent: 4145739 (1979-03-01), Dunning et al.
patent: 4148011 (1979-04-01), McLagan et al.
patent: 4281380 (1981-07-01), De Mesa, III et al.
patent: 4598363 (1986-07-01), Clark et al.
patent: 4888728 (1989-12-01), Shirakawa et al.
patent: 4920486 (1990-04-01), Nielsen
patent: 5049872 (1991-09-01), Yamanaka et al.
patent: 5059926 (1991-10-01), Karczewski

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