Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
Near-echo suppression
The hybrid circuit can be used to substantially reduce near echo signals. The circuit includes a balanced 2-wire to 4-wire hybrid for interconnecting a two wire receive path and a two wire transmit path to a two wire transmission line. The two wire receive path connects the balanced hybrid to an A/D converter and the two wire transmit path connects a D/A converter to the balanced hybrid. The two wire receive path contains a filter, dimensioned to remove signals transmitted from the D/A converter. The invention is particularly adapted for use with FDD and OFDD.
STMicroelectronics N.V.
H
H04B
inventional
Mikael Gunnar Daniel Magnus Hans Lennart Goran Franck Per Lis-Marie Tomas Anders Hans Petra Tomas Siwert Mauritz Sven-Rune Lars-Ake
Isaksson Bahlenberg Bengtsson Johansson Lundberg Olsson Okvist Sjöberg Odling Ljunggren Stefansson Isaksson Oman Dentgen Nordstrom Hakansson Lahti Olofsson Isaksson