Evangelos S. Eleftheriou  Evangelos S. Eleftheriou photo       

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IBM Fellow, Cloud & Computing Infrastructure
Zurich Research Laboratory, Zurich, Switzerland
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Professional Associations:  Fellow, IEEE

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More information:  Storage Technologies department


2015

RESISTIVE RANDOM-ACCESS MEMORY CELLS
Evangelos S Eleftheriou, Daniel Krebs, Abu Sebastian
US Patent 20,150,003,144


2014

TAPE DRIVE SYSTEM SERVER
Eleftheriou, Evangelos S.; Haas, Robert; Haustein, Nils; Jelitto, Jens; Koltsidas, Ioannis; Sarafijanovic, Slavisa; Saupp, Alexander; Seipp, Harald
US Patent Application 20140330817 A1

Management of partial data segments in dual cache systems
Michael T Benhase, Stephen L Blinick, Evangelos S Eleftheriou, Lokesh M Gupta, Robert Haas, Xiao-Yu Hu, Matthew J Kalos, Ioannis Koltsidas, Roman A Pletka
US Patent 8,688,913

Optimizing locations of data accessed by client applications interacting with a storage system
Evangelos S Eleftheriou, Robert Galbraith, Adrian C Gerhard, Robert Haas, Xiao-Yu Hu, Murali N Iyer, Ioannis Koltsidas, Timothy J Larson, Steven P Norgaard, Roman Pletka, others
US Patent 8,661,196


2013

Managing cache memories
Stephen L Blinick, Lawrence Y Chiu, Evangelos S Eleftheriou, Robert Haas, Yu-Cheng Hsu, Xiao-Yu Hu, Ioannis Koltsidas, Paul H Muench, Roman Pletka
US Patent App. 13/920,669

Promotion of partial data segments in flash cache
Michael T Benhase, Stephen L Blinick, Evangelos S Eleftheriou, Lokesh M Gupta, Robert Haas, Xiao-Yu Hu, Matthew J Kalos, Ioannis Koltsidas, Karl A Nielsen, Roman A Pletka, others
US Patent App. 13/830,407





2012



Reading files stored on a storage system
Nhan X. Bui, Giovanni Cherubini, Jens Jelitto, Angeliki Pantazi, Kazuhiro Tsuruta
US Patent 8,862,815

Apparatus for providing error correction capability to longitudinal position data
Roy D Cideciyan, Evangelos S Eleftheriou, Glen A Jaquette, Paul J Seger
US Patent 8,185,803

Adaptive cache promotions in a two level caching system
Michael T Benhase, Stephen L Blinick, Evangelos S Eleftheriou, Lokesh M Gupta, Robert Haas, Xiao-Yu Hu, Ioannis Koltsidas, Roman A Pletka
US Patent App. 13/412,412

CELL-STATE DETERMINATION IN PHASE-CHANGE MEMORY
ELEFTHERIOU, Evangelos S.; PANTAZI, Angeliki; PAPANDREOU, Nikolaos; POZIDIS, Charalampos; SEBASTIAN, Abu
WO Patent WO/2012/029,007


CARBON-BASED MEMORY ELEMENT
Caimi, Daniele, Eleftheriou, Evangelos S., Pozidis, Charalampos, Rossel, Christophe P., Sebastian, Abu
US Patent 20,120,001,142



Probe-based data storage devices
T Albrecht, T Antonakopoulos, G Cherubini, A Dholakia, E S Eleftheriou, C Pozidis
US Patent 8,190,970


2011

Wear-level of cells/pages/sub-pages/blocks of a memory
Roy D Cideciyan, Evangelos S Eleftheriou, Robert Haas, Xiao-Yu Hu, Ilias Iliadis, Roman Pletka
US Patent App. 13/700,545

Data encoding in solid state storage devices
Roy D Cideciyan, Evangelos S Eleftheriou, Thomas Mittelholzer
US Patent App. 13/582,768

Method for manufactoring a carbon-based memory element and memory element
Daniele Caimi, Evangelos S Eleftheriou, Charalampos Pozidis, Christophe P Rossel, Abu Sebastian
US Patent App. 13/807,422

Selective space reclamation of data storage memory employing heat and relocation metrics
Michael T Benhase, Evangelos S Eleftheriou, Lokesh M Gupta, Robert Haas, Xiao-Yu Hu, Matthew J Kalos, Ioannis Koltsidas, Roman A Pletka
US Patent App. 13/285,890

Dynamically adjusted threshold for population of secondary cache
Michael T Benhase, Stephen L Blinick, Evangelos S Eleftheriou, Lokesh M Gupta, Robert Haas, Xiao-Yu Hu, Ioannis Koltsidas, Roman A Pletka
US Patent App. 13/285,740

Selective population of secondary cache employing heat metrics
Kevin J Ash, Michael T Benhase, Stephen L Blinick, Evangelos S Eleftheriou, Lokesh M Gupta, Robert Haas, Xiao-Yu Hu, Ioannis Koltsidas, Roman A Pletka
US Patent App. 13/285,817



FLASH MEMORY CONTROLLER
ELEFTHERIOU, Evangelos S.; (CH). HAAS, Robert; (CH). HU, Xiao-Yu; (CH)


DECODING OF LDPC CODE
E S ELEFTHERIOU, R HAAS, X HU, D V NGUYEN
WO Patent WO/2011/151,759

INTEGRATING A FLASH CACHE INTO LARGE STORAGE SYSTEMS
R PLETKA, E ELEFTHERIOU, R HAAS, X Y HU, Y C HSU
WO Patent WO/2011/101,178





MULTILEVEL PROGRAMMING OF PHASE CHANGE MEMORY
ES Eleftheriou, A Pantazi, N Papandreou, C Pozidis, A Sebastian
US Patent App. 12/861,947




Method of controlling movements of a position of a microscanner
Abu Sebastian, Angeliki Pantazi, Charalampos Pozidis, Evangelos S. Eleftheriou, Reza Moheimani
US Patent 8,045,444
Abstract






Writing and reading of data in probe-based data storage devices
Thomas Albrecht, Theodore Antonakopoulos, Giovanni Cherubinni, Ajay Dholakia, Evangelos S Eleftheriou, Charalampos Pozidis
US Patent 8,028,218


2010

Operating a Data Storage System
Evangelos Stavros Eleftheriou, Robert Haas, Xiao-Yu Hu, Ilias Iliadis
US Patent App. 13/387,740

Data management in solid state storage systems
Roy D Cideciyan, Evangelos S Eleftheriou, Robert Haas, Xiao-Yu Hu, Ilias Iliadas, Thomas Mittelholzer
US Patent App. 13/516,627

RLL ENCODING
R D Cideciyan, E Eleftheriou, T Mittelholzer, P Seger, K Tanaka
EP Patent 2,153,526



LOGIC DEVICE
E S Eleftheriou, R Haas, X Hu, P Mueller
US Patent App. 12/950,948

Data storage device
P.Baechtold, J. G. Bednorz, G. K. Binnig, G. Cherubini, E. Eleftheriou, M. Despont
US Patent 7,848,213

STORAGE SYSTEM
E S Eleftheriou, R Haas, X Hu, I Iliadis
US Patent App. 12/831,326


DUAL ACTUATOR FOR A READ-WRITE DATA STORAGE DEVICE
R G Biskeborn, E S Eleftheriou, M A Lantz
US Patent App. 20,100/214,688

Intra-disk coding scheme for data-storage systems
A Dholakia, I Iliadis, R Haas, X Y Hu, E S Eleftheriou, R A Pletka
US Patent 7,823,011



OPERATING A REEL-TO-REEL SYSTEM
G Cherubini, E S Eleftheriou, J Jelitto
US Patent 8,840,056


High-rate RLL encoding
R D Cideciyan, E S Eleftheriou, T Mittelholzer, P J Seger, K Tanaka
US Patent 7,679,535




2009





Probe for scanning over a substrate and a data storage device
T Albrecht, M Despont, U T Duerig, M Lantz, H E Rothuizen, D W W Rothuizen
US Patent 7,482,826



REDUCING ACCESS CONTENTION IN FLASH-BASED MEMORY SYSTEMS
E S Eleftheriou, R Haas, P Mueller, R A Pletka
US Patent App. 12/637,897







Dynamically adapting a read channel equalizer
R A Hutchins, S Oelcer, J Jelitto, E S Eleftheriou
US Patent 7,589,927





2008



OVERSAMPLED CHANNEL RESPONSE IDENTIFICATION
G Cherubini, E. Eleftheriou, R. Hutchins, G. Jaquette, S. Oelcer
WO Patent WO/2008/059,406

REVERSE CONCATENATION FOR PRODUCT CODES
E ELEFTHERIOU, R HUTCHINS, T MITTELHOLZER, P SEGER
WO Patent WO/2008/116,725


METHOD FOR CREATING AN ERROR CORRECTION CODING SCHEME
A Dholakia, E Eleftheriou, X Y Hu, I Iliadis
US Patent App. 12/129,778

System and method for generating a position error signal (PES) reference curve in a data storage device
Evangelos S. Eleftheriou, Angeliki Pantazi, Charalampos Pozidis, Abu Sebastian
US Patent 7,405,898
Abstract



Using at least one servo channel to provide timing recovery and timing information to data channels
N X Bui, G Cherubini, E S Eleftheriou, R A Hutchins, G A Jaquette, J Jelitto, S Oelcer, M A Taylor, others
US Patent 7,433,142

Dynamically adapting a magnetic tape read channel equalizer
R A Hutchins, G A Jaquette, E S Eleftheriou, S Oelcer
US Patent 7,359,135


Storage device and method for scanning a storage medium
T Albrecht, G K Binnig, E S Eleftheriou, H Pozidis, S Sri-jayantha, P Vettiger
EP Patent 1,385,161


2007

Apparatus for providing dynamic equalizer optimization
Roy D Cideciyan, Ajay Dholakia, Evangelos S Eleftheriou, Richard L Galbraith, Weldon M Hanson, Thomas Mittelholzer, Travis R Oenning, Michael J Ross, David J Stanek
US Patent 7,193,802

Apparatus using a lengthened equalization target filter with a matched filter metric in a viterbi detector
Roy D Cideciyan, Ajay Dholakia, Evangelos Eleftheriou, Richard L Galbraith, Thomas Mittelholzer, Travis R Oenning
US Patent 7,286,595

Method and apparatus for data coding for high density recording channels exhibiting low frequency contents
Roy D Cideciyan, Ismail Demirkan, Evangelos Eleftheriou, Richard L Galbraith, Yuan Xing Lee
US Patent 7,164,371

Apparatus for providing data dependent detection in a data read channel
Roy D Cideciyan, Ajay Dholakia, Evangelos Eleftheriou, Richard L Galbraith, Thomas Mittelholzer, Travis R Oenning
US Patent 7,173,784

READ CHANNEL APPARATUS FOR ASYNCHRONOUS OVERSAMPLING, SYNCHRONOUS FRACTIONALLY SPACED EQUALIZATION AND DIGITAL GAIN ...
ELEFTHERIOU, Evangelos; (CH). OELCER, Sedat; (CH). JAQUETTE, Glen, Alan; (US). JELITTO, Jens; (CH). HUTCHINS, Robert, Allan; (US)

Controller
Evangelos Eleftheriou, Angeliki Pantazi, Charalampos Pozidis, Abu Sebastian
US Patent 7,207,119
Abstract



2006

Data protection method
Ajay Dholakia, Evangelos Eleftheriou, Xiaoyu Hu, Ilias Iliadis
US Patent App. 11/554,588

Receivers, methods, and computer program products for an analog modem that receives data signals from a digital modem
Youssef Abdelilah, Gordon Taylor Davis, Jeffrey Haskell Derby, Ajay Dholakia, Evangelos Stavros Eleftheriou, Robert FH Fischer, Dongming Hwang, Fredy D Neeser, Malcolm Scott Ware, Hua Ye, others
US Patent 7,003,030

Techniques for modulating data using short block encoders
M Blaum, R D Cideciyan, E S Eleftheriou, R L Galbraith, K Lakovic, T Mittelholzer, T Oenning, B A Wilson, others
US Patent 7,064,687

Techniques for implementing non-uniform constraints in modulation encoded data
M Blaum, R D Cideciyan, E S Eleftheriou, R L Galbraith, K Lakovic, T Mittelholzer, T Oenning, B A Wilson, others
US Patent 7,071,851

Apparatus, system, and method for mitigating signal asymmetry
E S Eleftheriou, E S Gale, R A Hutchins, G A Jaquette, S Oelcer, others
US Patent 7,106,533


Storage device and method
G Cherubini
US Patent App. 11/534,702

Data detection for local probe data storage devices
P Bachtold, G K Bennig, G Cherubini, A Dholakia, U T Durig, E S Eleftheriou, T W Loeliger, P Vettiger
US Patent 7,109,905

Decoding low density parity check codes
J Coker, A Dholakia, E S Eleftheriou, R Galbraith, T Mittelholzer, S Oelcer
US Patent 7,000,167



2005

DATA STORAGE SYSTEMS
R D CIDECIYAN, A DHOLAKIA, E S ELEFTHERIOU, R L GALBRAITH, W M HANSON, T MITTELHOLZER, T R OENNING
WO Patent WO/2005/064,611

System and method for controlling line driver power in digital subscriber line modems
G.T. Davis, J.H. Derby, E.S. Eleftheriou, S. Oelcer, M.S. Ware
US Patent 6,973,123



METHOD AND SYSTEM FOR OPTIMIZING ADSL CONNECTIONS IN A DSL ACCESS MULTIPLEXOR
E.S. Eleftheriou, S. Oelcer, Y. Abdelilah, G.T. Davis, J.H. Derby, D. Hwang, M. Ware, YE Hua
EP Patent 1,491,067


2004


Data coding for data storage systems
R D Cideciyan, A Dholakia, E S Eleftheriou, R L Galbraith, T Mittelholzer, T R Oenning, D J Stanek, others
US Patent 6,812,867

Precompensation technique and MTR code for high data rate recording
Cideciyan, Roy Daron (Ruschlikon, CH), Eleftheriou, Evangelos Stavros (Zurich, CH), Marcus, Brian Harry (Los Altos, CA), Modha, Dharmendra Shantilal (San Jose, CA), Olson, Radley Wahl (Cupertino, CA)
Patent 6768603


2003



Maximum transition run encoding and decoding systems
R D Cideciyan, J D Coker, E S Eleftheriou, R L Galbraith, D J Stanek
US Patent 6,643,814

Modems, methods, and computer program products for selecting an optimum data rate using error signals representing the difference between the output of an equalizer and the output of a slicer or detector
Youssef Abdelilah, Gordon Taylor Davis, Jeffrey Haskell Derby, Ajay Dholakia, Evangelos Stavros Eleftheriou, Dongming Hwang, Fredy D Neeser, Malcolm Scott Ware, Hua Ye
US Patent 6,661,837


APPARATUS AND METHOD FOR NOISE-PREDICTIVE MAXIMUM LIKELIHOOD DETECTION
J D Coker, E S Eleftheriou, R L Galbraith, W Hirt, others
EP Patent 0,981,880


2002

Method and apparatus for viterbi detection of generalized partial response signals using partial matched filter and matched filter metrics
Roy Daron Cideciyan, Jonathan Darrel Coker, Evangelos S Eleftheriou, Richard Leo Galbraith, David James Stanek
US Patent 6,377,635

Modems, methods, and computer program products for falling back to a lower data rate protocol upon detecting abnormal line conditions during startup
Y. Abdelilah, G.T. Davis, J.H. Derby, A. Dholakia, E.S. Eleftheriou, D. Hwang, F.D. Neeser, M.S. Ware, H. Ye, others
US Patent 6,381,267






2001


Self contained equalization method and apparatus
R D Cideciyan, J D Coker, E S Eleftheriou, R L Galbraith, J J Stephenson
US Patent 6,222,879


2000




1999

Method and apparatus for data detection for PRML data channels
J D Coker, E S Eleftheriou, R L Galbraith, W Hirt
US Patent 5,949,831


1998



1995



1994

Process of synchronizing a receiving modem after a training on data
P R Chevillat, E Eleftheriou, D G U Maiwald, M Quintin
EP Patent 0,407,673



1993

Coding method and apparatus using quaternary codes.
D Cideciyan, R Daron, E S Eleftheriou
EP Patent 0,543,070


1992

Block coding scheme for fractional-bit transmission
P R Chevillat, E S Eleftheriou, D G U Maiwald
US Patent 5,113,401


1991