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Angelos D.
Angelos D. Keromylis, New York, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20100064369 | METHODS, MEDIA, AND SYSTEMS FOR DETECTING ATTACK ON A DIGITAL PROCESSING DEVICE - Methods, media, and systems for detecting attack are provided. In some embodiments, the methods include: comparing at least part of a document to a static detection model; determining whether attacking code is included in the document based on the comparison of the document to the static detection model; executing at least part of the document; determining whether attacking code is included in the document based on the execution of the at least part of the document; and if attacking code is determined to be included in the document based on at least one of the comparison of the document to the static detection model and the execution of the at least part of the document, reporting the presence of an attack. In some embodiments, the methods include: selecting a data segment in at least one portion of an electronic document; determining whether the arbitrarily selected data segment can be altered without causing the electronic document to result in an error when processed by a corresponding program; in response to determining that the arbitrarily selected data segment can be altered, arbitrarily altering the data segment in the at least one portion of the electronic document to produce an altered electronic document; and determining whether the corresponding program produces an error state when the altered electronic document is processed by the corresponding program. | 03-11-2010 |
Angelos D. Liveris, Stafford, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20110029846 | MULTI-SOURCE DATA ENCODING, TRANSMISSION AND DECODING USING SLEPIAN-WOLF CODES BASED ON CHANNEL CODE PARTITIONING - System and method for designing Slepian-Wolf codes by channel code partitioning. A generator matrix is partitioned to generate a plurality of sub-matrices corresponding respectively to a plurality of correlated data sources. The partitioning is performed in accordance with a rate allocation among the plurality of correlated data sources. A corresponding plurality of parity matrices are generated based respectively on the sub-matrices, where each parity matrix is useable to encode data from a respective one of the correlated data sources. | 02-03-2011 |
Angelos D. Liveris, Sugar Land, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20110311003 | SOURCE-CHANNEL APPROACH TO CHANNEL CODING WITH SIDE INFORMATION - Code designs for channel coding with side information (CCSI) based on combined source-channel coding are disclosed. These code designs combine trellis-coded quantization (TCQ) with irregular repeat accumulate (IRA) codes. The EXIT chart technique is used for IRA channel code design (and especially for capacity-approaching IRA channel code design). We emphasize the role of strong source coding and endeavor to achieve as much granular gain as possible by using TCQ. These code designs synergistically combine TCQ with IRA codes. By bringing together TCQ and EXIT chart-based IRA code designs, we are able to approach the theoretical limit of dirty-paper coding. | 12-22-2011 |