Telegraphy – Systems – Chemical
Patent
1975-06-09
1977-01-04
Curtis, Marshall M.
Telegraphy
Systems
Chemical
178 69M, 178 691, H04L 1500
Patent
active
040015041
ABSTRACT:
In a digital data transmission system, a unique character marks the beginning of a data message. The speed at which that character is transmitted is sensed and the receiver speed set accordingly through the provision of a counter to count successive one-state bits in a constant speed dibit carrier for the unique character. A decoder responds to particular dibit counts to set speed latches corresponding to the speed at which the character was transmitted.
REFERENCES:
patent: 3657653 (1972-04-01), Wilkinson
patent: 3699255 (1972-10-01), Wallace, Jr.
patent: 3702900 (1972-11-01), Sturzinger
patent: 3705315 (1972-12-01), Clark
patent: 3730998 (1973-05-01), Schmidt et al.
patent: 3766316 (1973-10-01), Hoffman et al.
patent: 3838221 (1974-09-01), Schmidt et al.
Curtis Marshall M.
International Business Machines - Corporation
Lieber Robert
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