公开(公告)号：DE69904026D1

公开(公告)日：2003-01-02

申请号：DE69904026

申请日：1999-01-28

Applicant: ST MICROELECTRONICS NV

Inventor： OLOFSSON SVEN-RUNE ,  OLSSON LENNART ,  JOHANSSON JOACHIM ,  OEHMAN HANS ,  ISAKSSON MIKAEL ,  JOHANSSON MAGNUS ,  STEFANSSON TOMAS ,  BAHLENBERG GUNNAR ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARIE ,  BENGTSSON DANIEL

IPC: H04M11/06 ,  H04M11/00

公开(公告)号：DE69717285D1

公开(公告)日：2003-01-02

申请号：DE69717285

申请日：1997-09-01

Applicant: ST MICROELECTRONICS NV

Inventor： ISAKSSON MIKAEL ,  JOHANSSON MAGNUS ,  TONVALL HARRY ,  OLSSON LENNART ,  STEFANSSON TOMAS ,  OEHMAN HANS ,  BAHLENBERG GUNNAR ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARIE ,  NORDSTROEM TOMAS ,  ISAKSSON LARS-AKE ,  BENGTSSON DANIEL ,  HAKANSSON SIWERT ,  WEN YE

IPC: H04L27/34 ,  H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04M3/00 ,  H04M11/00 ,  H04L5/06

Abstract: A multi-carrier transmission system such as a DMT based VDSL system. The system uses orthogonal carriers with high order QAM constellations for the transmission of multiple bits per carrier and symbol. This estimate includes digital receiver and transmitter units with the receiver unit including a symbol detection unit. This system is adapted to determine a parameter for each single carrier with the parameter being indicative of a deviation of a received signal from a corresponding constellation point. It compares the parameter with an upper lower limit and if the parameter is outside the limits, changes the constellation used to modulate the carrier to a neighboring constellation. The symbol detection unit may be used to determine a parameter such as the ratio d2/sigma2, where d is the shortest distance between neighboring constellations, sigma is a standard deviation and sigma2 is the variance of the deviations of the input and output signal values of the symbol detection unit.

公开(公告)号：AT227912T

公开(公告)日：2002-11-15

申请号：AT97937936

申请日：1997-09-01

Applicant: ST MICROELECTRONICS NV

Inventor： ISAKSSON MIKAEL ,  JOHANSSON MAGNUS ,  TONVALL HARRY ,  OLSSON LENNART ,  STEFANSSON TOMAS ,  OEHMAN HANS ,  BAHLENBERG GUNNAR ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARIE ,  NORDSTROEM TOMAS ,  ISAKSSON LARS-AKE ,  BENGTSSON DANIEL ,  HAEKANSSON SIWERT ,  WEN YE

IPC: H04L27/34 ,  H04J11/00 ,  H04L1/00 ,  H04L7/027 ,  H04L27/26 ,  H04M3/00 ,  H04M11/00 ,  H04L5/06

Abstract: A two-way multi-carrier transmission system, such as a DMT system. If there are dynamic changes in the transmission parameters, synchronization must be maintained between the transmitter and the receiver when the transmission parameters changed. The first stage of such a process requires that the changes of parameter be notified by one transceiver to others involved in an active communication process over a slow transmission channel such as the control channel. Subsequently, the synchronization transceiver is adjusted simultaneously, i.e., from a predetermined DMT symbol. Such adjustments in time synchronization must be achieved with a minimum of overhead.

公开(公告)号：DE69807486D1

公开(公告)日：2002-10-02

申请号：DE69807486

申请日：1998-06-10

Applicant: ST MICROELECTRONICS NV

Inventor： OLOFSSON SVEN-RUNE ,  JOHANSSON JOACHIM ,  ISAKSSON MIKAEL ,  OEHMAN HANS ,  BENGTSSON DANIEL ,  OLSSON LENNART ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARI ,  LUNDBERG HANS ,  STEFANSSON TOMAS ,  BAHLENBERG GUNNAR ,  HAKANSSON SIVERT ,  JOHANSSON MAGNUS

IPC: H04B10/00 ,  H04J3/06 ,  H04L7/00 ,  H04N1/00 ,  H04L7/08

Abstract: An arrangement for synchronization of nodes in VDSL-systems, or more exactly, synchronization of optical VDSL-nodes which share a common part of a cable in the access network between subscribers and a local station. A time synchronization is provided towards an external system, 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, each respective node includes a receiver for a synchronization signal and an internal oscillator with high stability to deliver a stable clock signal.

公开(公告)号：BRPI0721441B1

公开(公告)日：2018-10-30

申请号：BRPI0721441

申请日：2007-03-12

Applicant: INCARD SA ,  ST MICROELECTRONICS INT NV ,  ST MICROELECTRONICS NV

Inventor： PAOLO DI IORIO

IPC: G06K9/00

Abstract: método e aparelho para detectar possíveis correlaçoes entre padrãoes de sinal a invenção refere-se a um método para detectar possíveis correlações entre padrões de sinal de um sinal de energia (s) utilizado por um dispositivo eletronico durante a execução de operações, compreendendo: o estabelecimento de pares de janelas (w~ i~, w~ j~) incluindo respectivos pares de seqúéncias (s~ i~, s~ j~) de valores amostrados (s~ h~); valores de computação (c(i,j)) de correlações (r) entre os respectivos pares de sequências (s~ i~, s~ j~). cada um dos valores (c(i,j))) é determinado por computação de um valor máximo de correlação (max~ k~(r(s~ i~, s~ i~^ k^)>) entre uma sequência (s~ i~) de um par (s~ i~, s~ j~) e uma pluralidade de sequências (s~ i~^ k^) de valores amostrados incluídos em janelas móveis correspondentes (w~ i~^ k^).

公开(公告)号：ITTO20120515A1

公开(公告)日：2013-12-15

申请号：ITTO20120515

申请日：2012-06-14

Applicant: ST MICROELECTRONICS NV ,  ST MICROELECTRONICS SRL

Inventor： CONTI SEBASTIANO ,  VIGNA BENEDETTO

公开(公告)号：DE602004030991D1

公开(公告)日：2011-02-24

申请号：DE602004030991

申请日：2004-02-17

Applicant: ST MICROELECTRONICS NV

Inventor： WELLIG ARMIN ,  ZORY JULIEN

IPC: H03M13/39 ,  H03M13/13 ,  H03M13/45

公开(公告)号：DE69941977D1

公开(公告)日：2010-03-18

申请号：DE69941977

申请日：1999-06-01

Applicant: IMEC ,  ST MICROELECTRONICS NV

Inventor： GROESENEKEN GUIDO ,  RUSS CHRISTIAN

IPC: H01L27/02 ,  H01L29/74 ,  H01L29/87

公开(公告)号：DE602004011537T2

公开(公告)日：2009-03-26

申请号：DE602004011537

申请日：2004-09-15

Applicant: CEA ETABLISSEMENT DE CARACTERE ,  ST MICROELECTRONICS NV

Inventor： ISSON OLIVIER ,  PIERROT JEAN-BENOIT ,  LENEZ THIERRY DI

IPC: H04L7/04 ,  H04J3/06 ,  H04L27/26

Abstract: The method involves determining two vectors from signals received by a receiver. A correlation and a square error between the vectors are calculated. A cost function (F1) that is a linear combination of two previous cost functions is calculated, and according to sign of result, another cost function is calculated to estimate an initial frame, and the receiver is activated. An independent claim is also included for a device to control a receiver in a digital communication system.

公开(公告)号：DE60322550D1

公开(公告)日：2008-09-11

申请号：DE60322550

申请日：2003-12-09

Applicant: ST MICROELECTRONICS NV

Inventor： WELLIG ARMIN ,  ZORY JULIEN

IPC: H03M13/27

Abstract: The invention relates to de-interleaving successive sequences of interleaved data samples extracted from a virtual memory having L0 columns and C0 rows, in particular for high-throughput applications. The method comprises the steps of: receiving each sequence of said interleaved data samples and writing row by row said received sequences of interleaved data samples in a de-interleaving memory array (2) having L rows and C columns, L being superior or equal to L0 and C being superior or equal to C0, and de-interleaving the data samples stored in said de-interleaving memory array (2) sub-array by sub-array, the used predetermined sub-array being a square cluster array having a predetermined number SQ of rows and columns, the number L of rows and the number C of columns of the de-interleaving memory array (2) being multiples of the number SQ of rows and columns. De-interleaving the de-interleaving memory array (2) sub-array by sub-array allows to avoid memory re-use bottleneck and allows to decrease memory access rate.