公开(公告)号：EP1080533A1

公开(公告)日：2001-03-07

申请号：EP99929979.5

申请日：1999-05-11

Applicant: STMicroelectronics N.V.

Inventor： BÖRJESSON, Per, Ola ,  ISAKSSON, Mikael ,  ÖDLING, Mikael ,  BENGTSSON, Daniel ,  BAHLENBERG, Gunnar ,  JOHANSSON, Magnus ,  OLSSON, Lennart ,  ÖKVIST, Sven, Göran

IPC: H03M1/12

CPC classification number: H03M1/12

Abstract: A circuit, for digitising an analogue signal includes an analogue to digital converter and a clip processor, adapted to estimate a value for clipped digital signal samples and a buffer adapted to dynamically store a plurality of digitised samples produced by said analogue to digital converter. The clip processor is adapted to read digitised samples from said buffer and replace clipped digitised samples.

公开(公告)号：EP0923822B1

公开(公告)日：2002-11-13

申请号：EP97937936.9

申请日：1997-09-01

Applicant: STMicroelectronics N.V.

Inventor： ISAKSSON, Mikael ,  JOHANSSON, Magnus ,  TONVALL, Harry ,  OLSSON, Lennart ,  STEFANSSON, Tomas ,  ÖHMAN, Hans ,  BAHLENBERG, Gunnar ,  ISAKSSON, Anders ,  ÖKVIST, Göran ,  LJUNGGREN, Lis-Marie ,  NORDSTRÖM, Tomas ,  ISAKSSON, Lars-Ake ,  BENGTSSON, Daniel ,  HÄKANSSON, Siwert ,  WEN, Ye

IPC: H04L5/06 ,  H04L27/26

CPC classification number: H04L1/0025 ,  H04L1/0059 ,  H04L1/0071 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675

公开(公告)号：EP0992138B1

公开(公告)日：2002-08-28

申请号：EP98929976.3

申请日：1998-06-10

Applicant: STMicroelectronics N.V.

Inventor： OLOFSSON, Sven-Rune ,  JOHANSSON, Joachim ,  ISAKSSON, Mikael ,  ÖHMAN, Hans ,  BENGTSSON, Daniel ,  OLSSON, Lennart ,  ISAKSSON, Anders ,  ÖKVIST, Göran ,  LJUNGGREN, Lis-Mari ,  LUNDBERG, Hans ,  STEFANSSON, Tomas ,  BAHLENBERG, Gunnar ,  HAKANSSON, Sivert ,  JOHANSSON, Magnus

IPC: H04L7/08

CPC classification number: H04N1/0035 ,  H04J3/0644

Abstract: The invention relates to an arrangement for synchronization of nodes in VDSL-systems, or more exactly, synchronization of optical VDSL-nodes (2) which share a common part of a cable in the access network between the subscribers (3) and the local station (1). The invention provides a time synchronization towards an external system (7), for instance GPS, which gives a time reference by which the different nodes can be synchronized. The synchronization reduces the near end cross talk between the VDSL-systems in the different nodes. Preferably respective node includes a receiver (6) for a synchronization signal and an internal oscillator with high stability to deliver a stable clock signal.

公开(公告)号：EP1062760A1

公开(公告)日：2000-12-27

申请号：EP99907994.0

申请日：1999-02-17

Applicant: STMicroelectronics N.V.

Inventor： ISAKSSON, Mikael ,  BENGTSSON, Daniel ,  SJÖBERG, Frank ,  ÖDLING, Per ,  NILSSON, Rickard ,  BAHLENBERG, Gunnar ,  JOHANSSON, Magnus ,  OLSSON, Lennart ,  ÖKVIST, Göran

IPC: H04L5/06 ,  H04L27/26

CPC classification number: H04L5/143 ,  H04L27/2607 ,  H04L27/2626 ,  H04L27/2647

Abstract: Zipper is a time-synchronized frequency-division duplex implementation of discrete multi tone (DMT) modulation. Two communicating Zipper modems transmit DMT symbols simultaneously with a common clock. The Zipper scheme implies that every carrier, in the total set of carriers in the DMT signal, is exclusively chosen to be used for either the up-stream or the down-stream direction. When all transmitters are time synchronized, the near end cross-talk (NEXT) and near end echoes injected into the received signal are orthogonal to the desired signal. The present invention provides s telecommunications transmission system using zipper and having at least two VDSL systems. Each VDSL system comprises a pair of zipper modems communicating over a cable transmission path. The two VDSL systems employ a common cable. The telecommunications transmission system is adapted to: handle zipper transmissions transmitted over the common cable; at least partly mitigate NEXT; and permit transmissions in a first VDSL system which are asynchronous with transmissions in a second VDSL system.

公开(公告)号：EP1131900B1

公开(公告)日：2003-10-15

申请号：EP99963715.0

申请日：1999-11-18

Applicant: STMicroelectronics N.V.

Inventor： SJÖBERG, Frank ,  WILSON, Sarah, Kate ,  NILSSON, Rickard ,  BENGTSSON, Daniel ,  ISAKSSON, Mikael ,  NORDSTRÖM, Tomas ,  ÖDLING, Per ,  BAHLENBERG, Gunnar ,  JOHANSSON, Magnus ,  OLSSON, Lennart ,  ÖKVIST, Sven-Göran

IPC: H04B3/32 ,  H04B3/04

CPC classification number: H04B3/32 ,  H04L5/0007

公开(公告)号：EP0922346B1

公开(公告)日：2003-07-16

申请号：EP97939280.0

申请日：1997-09-01

Applicant: STMicroelectronics N.V.

Inventor： ISAKSSON, Mikael ,  JOHANSSON, Magnus ,  TONVALL, Harry ,  OLSSON, Lennart ,  STEFANSSON, Tomas ,  ÖHMAN, Hans ,  BAHLENBERG, Gunnar ,  ISAKSSON, Anders ,  ÖKVIST, Göran ,  LJUNGGREN, Lis-Marie ,  NORDSTRÖM, Tomas ,  ISAKSSON, Lars-Ake ,  BENGTSSON, Daniel ,  HAKANSSON, Siwert ,  WEN, Ye

IPC: H04L25/03 ,  H04L27/26

CPC classification number: H04L25/03159 ,  H04L1/0065 ,  H04L1/0071 ,  H04L27/2649 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2025/03414 ,  H04L2025/03522

公开(公告)号：EP1031199B1

公开(公告)日：2003-02-26

申请号：EP98956052.9

申请日：1998-11-11

Applicant: STMicroelectronics N.V.

Inventor： ISAKSSON, Mikael ,  JOHANSSON, Magnus ,  OLSSON, Lennart ,  STEFANSSON, Tomas ,  ÖHMAN, Hans ,  BAHLENBERG, Gunnar ,  ISAKSSON, Anders ,  ÖKVIST, Göran ,  LJUNGGREN, Lis-Marie ,  BENGTSSON, Daniel ,  OLOFSSON, Sven-Rune ,  JOHANSSON, Joachim ,  BÖRJESSON, Per, Ola ,  GRIP, Niklas ,  NILSSON, Richard ,  SJÖBERG, Frank ,  WILSON, Sarah ,  ÖDLING, Per

IPC: H04B15/00 ,  H04B3/32

CPC classification number: H04L25/10 ,  H04B1/123 ,  H04L27/2647

公开(公告)号：EP1084546B1

公开(公告)日：2003-01-22

申请号：EP99928289.0

申请日：1999-05-11

Applicant: STMicroelectronics N.V.

Inventor： JOHANSSON, Magnus ,  OLSSON, Lennart ,  BAHLENBERG, Gunnar ,  BENGTSSON, Daniel ,  ISAKSSON, Mikael ,  OLOFSSON, Sven-Rune ,  ÖKVIST, Sven, Göran

IPC: H04L5/06 ,  H04L27/26

CPC classification number: H04L25/03159 ,  H04L27/2655 ,  H04L2025/03414 ,  H04L2025/03522 ,  H04L2025/03617

公开(公告)号：EP0923823B1

公开(公告)日：2002-11-13

申请号：EP97937937.7

申请日：1997-09-01

Applicant: STMicroelectronics N.V.

Inventor： ISAKSSON, Mikael ,  JOHANSSON, Magnus ,  TONVALL, Harry ,  OLSSON, Lennart ,  STEFANSSON, Tomas ,  ÖHMAN, Hans ,  BAHLENBERG, Gunnar ,  ISAKSSON, Anders ,  ÖKVIST, Göran ,  LJUNGGREN, Lis-Marie ,  NORDSTRÖM, Tomas ,  ISAKSSON, Lars-Ake ,  BENGTSSON, Daniel ,  HAKANSSON, Siwert ,  WEN, Ye

IPC: H04L5/06 ,  H04L27/26

CPC classification number: H04L27/2647

公开(公告)号：EP0883944B1

公开(公告)日：2002-10-16

申请号：EP96924225.4

申请日：1996-07-10

Applicant: STMicroelectronics N.V.

Inventor： ISAKSSON, Mikael

IPC: H04L5/06

CPC classification number: H04L5/023 ,  H04L5/143

Abstract: The invention relates to a procedure to suppress near-end crosstalk at bidirectional broadband communication in wire network, where a cable with at least one pair of wires connects the telephone exchange side and the subscriber side. According to the invention orthogonal subcarriers are utilized in the two transmission directions, for instance by use of DMT line coding technology (Discrete Multitone). The transmission can be symmetric or asymmetric with different numbers of carriers in different transmission directions. The invention solves the problem of near-end crosstalk and echo in the system and increases the transmission capacity, especially at symmetric communication.