H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 29/00 (2006.01) H04B 7/005 (2006.01) H04L 1/00 (2006.01) H04L 12/28 (2006.01) H04L 27/18 (2006.01)
Patent
CA 2121195
A digital signal transmission device for transmitting a signal generated by modulating a carrier wave according to a binary or M-ary data sequence. Such device comprises a differentially encoding unit for converting the original data sequence into a transmission data sequence, a waveform generation unit for.generating a phase transition waveform in each time slot which corresponds to each data included in the transmission data sequence, and a modulation unit for modulating the carrier wave according to a signal which has the phase transition waveform generated by the waveform generation unit. The information to be transmitted is present in a difference between two data which are spaced form each other by a prescribed time slots. The phase transition waveform includes a center part and a connection part for linking the center parts in adjacent time slots where a phase transition waveform in the center part of a present time slot is generated according to a corresponding data, then a phase transition waveform in the connection part is generated to continue on the phase transition waveform in the center parts of time slots succeeding to and preceding the present time slot without having a discontinuity even at the linking point.
Takai Hitoshi
Urabe Yoshio
Yamasaki Hidetoshi
Matsushita Electric Industrial Co. Ltd.
Riches Mckenzie & Herbert Llp
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