H - Electricity – 04 – L
Patent
H - Electricity
04
L
354/67
H04L 25/00 (2006.01) H04L 25/03 (2006.01) H04L 25/04 (2006.01) H04L 25/49 (2006.01)
Patent
CA 1212775
ABSTRACT "Transmission system for the transmission of binary data symbols". A transmission system for transmitting binary data symbols. For the transmission of data symbols via systems which, the physical transmission medium included, are not suitable, or are poorly suitable for the transmission of low frequencies it is known to use bi-phase modulation. This mehtod is however not optimal as regards the signal- to-noise ratio and the intersymbol interference. A transmission system is described in which an optimum detection is enabled through the use of bi-phase encoding of the binary data symbols and special filter means, which detection is highly independent of the frequency response of the constituent parts of the transmission system and/or the physical transmission medium for low frequencies. This system may be used in optical communication systems as well as in systems for digital transmission via cables, the undisturbed, simultaneous transmission of an independent base-band signal being possible.
443127
Gerwen Petrus J. Van
Snijders Wilfred A.m.
Fetherstonhaugh & Co.
N.v.philips'gloeilampenfabrieken
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