METHOD AND APPARATUS FOR TRANSCODING BINARY INFORMATION FOR TIME DOMAIN MULTIPLEX TRANSMISSION

摘要

The invention relates to the transcoding of binary informations. Successive binary data forming each information to be transmitted are transcoded four by four according to a ternary code wherein to each of the possible groups of four binary values corresponds a combination of four ternary values which is selected among two different combinations assigned to the group considered, one of the two combinations corresponding to the addition of a supplementary indication predetermined with respect to the other one. The coder device (1) and the decoder device (3) comprise each a transcoder (6, 11) organized in association with a read-only memory. The invention relates to wire telecommunication timedivision networks and particularly to multiservice telephone exchangers.