Diplex

"diplex" -- that is to say, in one direction, simultaneously, as separate and distinct messages, over the one line. ❋ Frank Lewis Dyer (1905)

This principle was covered by Edison's Patent No. 162,633, and was known as the "diplex" system, although, in the patent referred to, Edison showed and claimed the adaptation of the principle to duplex telegraphy. ❋ Frank Lewis Dyer (1905)

M. SCHINDLER: It's in her medical records at M.diplex. ❋ Unknown (2004)

He had improved his own diplex, combined it with the Stearns duplex and thereby produced a system by means of which four messages could be sent over a single line at the same time, two in each direction. ❋ Unknown (1910)

This principle was covered by Edison's Patent No. 162,633, and was known as the ` ` diplex '' system, although, in the patent referred to, Edison showed and claimed the adaptation of the principle to duplex telegraphy. ❋ Unknown (1910)

Thus far we have referred to two systems, one the neutral or differential duplex, and the other the combination of the neutral and polar relays, making a diplex system. ❋ Unknown (1910)

One of these applications2. 1 embraced an invention by which two messages could be sent not only duplex, or in opposite directions as above explained, but could also be sent ` ` diplex '' -- that is to say, in one direction, simultaneously, as separate and distinct messages, over the one line. ❋ Unknown (1910)

Edison followed up his work on the diplex and combined the two systems into the quadruplex, by means of which four messages could be sent and received simultaneously over the one wire, two in each direction, thus employing eight operators -- four at each end -- two sending and two receiving. ❋ Unknown (1910)

Edison followed up his work on the diplex and combined the two systems into the quadruplex, by means of which FOUR messages could be sent and received simultaneously over the one wire, two in each direction, thus employing eight operators -- four at each end -- two sending and two receiving. ❋ Frank Lewis Dyer (1905)