公开(公告)号：DE112012004571T5

公开(公告)日：2014-07-24

申请号：DE112012004571

申请日：2012-08-30

Applicant: IBM

Inventor： GUPTA LOKESH ,  PLETKA ROMAN ,  HAAS ROBERT ,  KALOS MATTHEW ,  NIELSEN KARL ,  BENHASE MICHAEL ,  ELEFTHERIOU EVANGELOS ,  KOLTSIDAS IOANNIS ,  HU XIAO-YU ,  BLINICK STEPHEN

IPC: G06F12/08

Abstract: Beispielhafte Ausführungsformen von Verfahren, System und Computerprogrammprodukt für ein wirkungsvolleres Verschieben von Spuren in einem sekundären Speicher werden bereitgestellt. Da temporäre Bits mit sequenziellen Bits zum Steuern des zeitlichen Ablaufs zum Verschieben der Spur in einem primären Speicher verwendet werden, werden die temporären Bits und die sequenziellen Bits bei einer Ausführungsform lediglich beispielhaft von dem primären Speicher zum sekundären Speicher übertragen. Es wird zugelassen, dass die temporären Bits in dem sekundären Speicher lagern. Zusätzliche Ausführungsformen von System und Computerprogrammprodukt werden offenbart und stellen zugehörige Vorteile bereit.

公开(公告)号：GB2496822A

公开(公告)日：2013-05-22

申请号：GB201304453

申请日：2011-08-26

Applicant: IBM

Inventor： ELEFTHERIOU EVANGELOS ,  PANTAZI ANGELIKI ,  PAPANDREOU NIKOLAOS ,  POZIDIS CHARALAMPOS ,  SEBASTIAN ABU

IPC: G11C13/00 ,  G11C11/56 ,  H01L45/00

Abstract: Methods and apparatus are provided for determining the state of a phase-change memory cell. A plurality of measurements are made on the cell, the measurements being dependent on the sub-threshold current-versus-voltage characteristic of the cell. The measurements are processed to obtain a metric which is dependent on the slope of the sub- threshold current-versus-voltage characteristic. The state of the cell is then determined in dependence on this metric which, unlike absolute cell resistance,is substantially unaffected by drift.

公开(公告)号：GB2495452A

公开(公告)日：2013-04-10

申请号：GB201301220

申请日：2011-06-24

Applicant: IBM

Inventor： CAIMI DANIELE ,  ELEFTHERIOU EVANGELOS ,  POZIDIS CHARALAMPOS ,  ROSSEL CHRISTOPHE ,  SEBASTIAN ABU

IPC: H01L45/00

Abstract: Disclosed is a method for manufacturing a resistive memory element (1) which comprises: providing a storage layer (2) comprising a resistance changeable material comprising carbon; providing contact layers (3, 4) for contacting the storage layer (2), wherein the storage layer (2) is disposed between a bottom contact layer (3) and a top contact layer (4); and doping the resistance changeable material with a dopant material, preferably hydrogen, nitrogen or a transition metal, and/or annealing the material. A corresponding resistive memory element (1) includes a bottom contact layer (3), a top contact layer (4) and a storage layer (2) disposed between the bottom contact layer (3) and the top contact layer (4), wherein the storage layer (2) comprises a resistance changeable material comprising carbon that is doped with a dopant material.

公开(公告)号：GB2487135A

公开(公告)日：2012-07-11

申请号：GB201200428

申请日：2010-09-13

Applicant: IBM

Inventor： PANTAZI ANGELIKI ,  ELEFTHERIOU EVANGELOS ,  JELITTO JENS ,  BUI NHAN XUAN

IPC: G11B5/584

Abstract: Various embodiments for addressing time-varying periodic disturbances in a servo control system are provided. Each of a plurality of coefficients is updated based on an estimation of at least one disturbance frequency. The updated plurality of coefficients is provided to at least one peak filter modifying an input signal of the servo control system. The peak filter is operable in view of the updated plurality of coefficients to cancel at least 10 one of the time-varying periodic disturbances.

公开(公告)号：DE602007001872D1

公开(公告)日：2009-09-17

申请号：DE602007001872

申请日：2007-01-10

Applicant: IBM

Inventor： CHERUBINI GIOVANNI ,  ELEFTHERIOU EVANGELOS ,  JELITTO JENS ,  HUTCHINS ROBERT

IPC: G11B5/584

Abstract: A fully synchronous longitudinal position (LPOS) detection system is provided for improving the reliability of servo channels in tape systems. The system is based on the interpolation of the servo channel output signal, which is sampled by an analog-to-digital converter (ADC) at a fixed sampling rate, using a clock at a nominal frequency, so that interpolated signal samples are obtained at a predetermined fixed rate, independent of tape velocity. This predetermined fixed rate is defined in terms of samples per unit of length, as opposed to samples per unit of time, which is the measure of the ADC sampling rate. The resolution with which the servo channel signal is obtained at the interpolator output is thus determined by the step interpolation distance.

公开(公告)号：AT438912T

公开(公告)日：2009-08-15

申请号：AT07703759

申请日：2007-01-10

Applicant: IBM

Inventor： CHERUBINI GIOVANNI ,  ELEFTHERIOU EVANGELOS ,  JELITTO JENS ,  HUTCHINS ROBERT

IPC: G11B5/584

Abstract: A fully synchronous longitudinal position (LPOS) detection system is provided for improving the reliability of servo channels in tape systems. The system is based on the interpolation of the servo channel output signal, which is sampled by an analog-to-digital converter (ADC) at a fixed sampling rate, using a clock at a nominal frequency, so that interpolated signal samples are obtained at a predetermined fixed rate, independent of tape velocity. This predetermined fixed rate is defined in terms of samples per unit of length, as opposed to samples per unit of time, which is the measure of the ADC sampling rate. The resolution with which the servo channel signal is obtained at the interpolator output is thus determined by the step interpolation distance.

公开(公告)号：DE69412288T2

公开(公告)日：1999-04-22

申请号：DE69412288

申请日：1994-02-10

Applicant: IBM

Inventor： ELEFTHERIOU EVANGELOS ,  PETERSEN BRENT

IPC: H04B1/7103 ,  H04B3/06 ,  H04B7/26 ,  H04J13/00 ,  H04L25/03

Abstract: PCT No. PCT/EP94/00374 Sec. 371 Date Jun. 27, 1996 Sec. 102(e) Date Jun. 27, 1996 PCT Filed Feb. 10, 1994 PCT Pub. No. WO95/22209 PCT Pub. Date Aug. 17, 1995The present invention concerns an apparatus and method for reducing the multiuser-interference of input signals. The apparatus in accordance with the present invention comprises a multivariate predictor (81) and a decision quantizer (82), said multivariate predictor (81) operating on interference signals +E,uns eta +EE '(D) provided by means for extracting interference signals (83), said interference signals +E,uns eta +EE '(D) being obtained from said input signals and output signals +E,cir +E,uns b+EE +EE (D) which are available at an output of said decision quantizer (82) and fed back from there to said means for extracting interference signals (83).

公开(公告)号：CA2179979A1

公开(公告)日：1995-08-17

申请号：CA2179979

申请日：1994-02-10

Applicant: IBM

Inventor： ELEFTHERIOU EVANGELOS ,  PETERSEN BRENT ROBERT

IPC: H04B1/7103 ,  H04B3/06 ,  H04B7/26 ,  H04J13/00 ,  H04L25/03 ,  H04B15/00 ,  H04B7/216 ,  H04Q7/22

Abstract: The present invention concerns an apparatus and method for reducing the multiuser-interference of input signals. The apparatus in accordance with the present invention comprises a multivariate predictor (81) and a decision quantizer (82), said multivariate predictor (81) operating on interference signals '(D) provided by means for extracting interference signals (83), said interference signals '(D) being obtained from said input signals and output signals b(D) which are available at an output of said decision quantizer (82) and fed back from there to said means for extracting interference signals (83).

公开(公告)号：DE68915274D1

公开(公告)日：1994-06-16

申请号：DE68915274

申请日：1989-07-12

Applicant: IBM

Inventor： CHEVILLAT PIERRE RENE ,  ELEFTHERIOU EVANGELOS ,  MAIWALD DIETRICH G U ,  QUINTIN MICHEL

IPC: H04L7/10 ,  H04J3/06 ,  H04L27/18 ,  H04L27/22 ,  H04L27/34 ,  H04M11/00

Abstract: In a data transmission wherein a transmitting modem transmits data signals to a receiving modem via a telephone line, the process of the invention consists in rotating (12), in the transmitting modem, the phase of the point of the constellation resulting from a group of data bits by a predetermined phase value, and then rotating (22) after, a predetermined delay in the receiving modem, the phase of the estimated point resulting from the transformation of the analog signal, by the opposite of said predetermined phase value, the mean-square error between the rotated point and the estimated point of the constellation being used to determine whether the receiving modem is out of synchronization or not.

公开(公告)号：DE112017000238T5

公开(公告)日：2018-08-23

申请号：DE112017000238

申请日：2017-02-24

Applicant: IBM

Inventor： ELEFTHERIOU EVANGELOS ,  KULL LUKAS ,  PANTAZI ANGELIKI ,  SEBASTIAN ABU ,  TUMA TOMAS ,  STANISAVLJEVIC MILOS

IPC: G06N3/02

Abstract: Eine Vorrichtung für künstliche Neuronen enthält eine resistive Speicherzelle, die in einer Eingangsschaltung mit einem Neuroneneingang zum Empfangen von neuronalen Eingangssignalen verbunden ist, und eine Stromquelle zum Liefern eines Lesestroms an die Zelle. Die Eingangsschaltung ist in Reaktion auf einen Satz von Steuersignalen selektiv konfigurierbar, definiert alternierende Lese- und Schreibphasen des Betriebs, um den Lesestrom während der Lesephase an die Zelle anzulegen und um einen Programmierstrom an die Zelle anzulegen, um den Zellenwiderstand beim Empfangen eines neuronalen Eingangssignals während der Schreibphase zu programmieren. Der Zellenwiderstand wird progressiv von einem ersten Zustand zu einem zweiten Zustand als Reaktion auf aufeinanderfolgende neuronale Eingangssignale geändert. Die Vorrichtung enthält ferner eine Ausgangsschaltung mit einem Neuronenausgang und einem digitalen Zwischenspeicher, der mit der Eingangsschaltung verbunden ist, um ein von dem Zellenwiderstand abhängiges Messsignal zu empfangen.