Method and apparatus for code conversion of binary to multilevel signals
Номер патента: CA1153118A
Опубликовано: 30-08-1983
Автор(ы): Alan F. Graves, Frederick M. Pascoe, James E. Dilley, Malcolm C. Betts
Принадлежит: Northern Telecom Ltd
Опубликовано: 30-08-1983
Автор(ы): Alan F. Graves, Frederick M. Pascoe, James E. Dilley, Malcolm C. Betts
Принадлежит: Northern Telecom Ltd
Реферат: METHOD AND APPARATUS FOR CODE CONVERSION OF BINARY TO MULTILEVEL SIGNALS Abstract of the Disclosure A method and apparatus for converting a binary signal to one having quaternary-level symbols with no d-c component. To achieve this, the running digital sum is limited by selectively inverting words within each frame of (n) symbols. A separate (n + 1)th symbol is added to each frame to indicate the selective inversion of the words, so that the correct polarity of the (n) symbols can be re-established. - i -
Data transmission scheme and apparatus
Номер патента: WO2018020041A1. Автор: Harald Haas,Dushyantha A. BASNAYAKA. Владелец: THE UNIVERSITY COURT OF THE UNIVERSITY OF EDINBURGH. Дата публикации: 2018-02-01.