Apparatus for switching data transmission channels

Abstract

Abstract 1. A device for switching data transmission channels, said device being interposed between a receiver unit and two data transmission channels (3 and 4), each channel transmitting under different conditions of propagation the data delivered by a common transmitter unit as well as the clock signal associated with said data, the device comprising first means (9 and 11) for increasing by a factor n the duration of the data transmitted over the two transmission channels, and second switching means (8) for transmitting the data received from one or the other of the two channels to the receiver unit, characterized in that it further comprises third means (13, 17) for delivering a clock signal to the receiver unit, this signal being in phase with the clock signal of the switched channel, fourth means (18) coupled to the first means (9, 11), conceived to synchronize the data of the two channels, the durations of which are increased by the first means, and fifth means (16) coupled to the receiver unit and intended to shorten by the same factor n the duration of the data furnished by the first means and to transmit these data thus obtained to the receiver unit synchroneously with the clock signals delivered by the third means (13, 17), the second switching means (8) being interposed between the first means (9, 11) and the fifth means (16) in order to transmit the data which have been synchronized by the fourth means (18) through the fifth means to the receiver unit, the increased duration of the data furnished by the first means (9, 11) being larger than two times the maximum difference of propagation between the two channels.

Inventors

• 👤 Christian Blanc
• 👤 Rémy Gomez

Bibliographic Details