Patent
1978-06-23
1979-07-03
Olms, Douglas W.
179 15BV, 179 15AT, H04J 302
Patent
active
041601289
ABSTRACT:
Digital transmission system providing multipoint connections in which a main data transceiver can communicate with a plurality of secondary data transceivers and the secondary data transceivers can each, in turn, communicate with the main data transceiver, transmission occurring via component digital words at certain low rates multiplexed into intermediate rate incoming digital channels which are themselves multiplexed into a high rate incoming highway. The words are given a first partial address in the low to intermediate rate multiplexing step and a second partial address in the intermediate to high rate multiplexing step. A digital switching network is provided for selectively switching the component words from the high rate incoming highway to word positions in a high rate outgoing highway according to their first and second partial addresses. A multipoint unit is connected to the switching network by intermediate rate incoming and outgoing digital channels and the high rate highway. The multipoint unit comprises means for simultaneously transferring the input words assigned to the main transceiver on the intermediate rate incoming digital channel to output word positions assigned to the secondary transceivers on the intermediate rate outgoing digital channel and means for sequentially transferring the input words assigned to the secondary transceivers on the intermediate rate incoming digital channel to output word positions assigned to the main transceiver on the intermediate rate outgoing digital channel.
REFERENCES:
patent: RE29215 (1977-05-01), Carney et al.
patent: 3809819 (1974-05-01), Stephens
patent: 3952162 (1976-04-01), Texier et al.
patent: 3987251 (1976-10-01), Texier et al.
patent: 3988544 (1976-10-01), Texier et al.
patent: 4100533 (1978-07-01), Napolitano
Olms Douglas W.
Saffitz Abraham A.
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