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US 4,229,819 AGranted
Data transmission system
AssigneeLicentia Patent-Verwaltungs-G.m.b.H.
InventorsJoachim Kuhlmann, Helmut Moser
Life of this patent
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Abstract
A data transmission system comprises a transmitter and a receiver in which, on the occurrence of a sequence of identical bits, only the first bit is transmitted, the remainder of the sequence being replaced by pauses of corresponding length.
Claims8
A data transmission system for transmitting and receiving a digital signal corresponding to a digitalized word having a defined number of logic "1" and "0" bits, comprising
- a transmitter for modifying said digitalized word to form said digital signal wherein each sequence of n identical bits of said digitalized word is transmitted as a predetermined number of pulses having a predetermined pulse repetition frequency corresponding to the value of the first bit in said sequence followed by n-1 pauses in transmission, each pause having a length corresponding to to the interval during which said pulses corresponding to said first bit were transmitted, each bit representing a logic "1" consisting of a first predetermined number of pulses having a first pulse repetition frequency and each bit representing a logic "0" consisting of a second predetermined number of pulses having a second pulse repetition frequency, and
- a receiver for receiving said digital signal and converting it to said digitalized word.
Dependencies are inferred from the claim text.