Evyatar Hemo

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In recent years, due to the spread of multi-level nonvolatile memories (NVM), q-ary write-once memories (WOM) codes have been extensively studied. By using WOM codes, it is possible to rewrite NVMs t times before erasing the cells. The use of WOM codes enables to improve the performance of the storage device, however, it may also increase errors caused by(More)
In recent years, there has been a mounting interest in better methods of measuring nanoscale objects, especially in fields such as nanotechnology, biomedicine, cleantech, and microelectronics. Conventional methods have proved insufficient, due to the classical diffraction limit or slow and complicated measuring procedures. The purpose of this paper is to(More)
For an array of memory cells that are read by threshold measurements, we ask the question of how to choose the measurements in the read sequence to minimize the number of measurements before the array is fully read. We propose and study analytically various adaptive read algorithms, and provide a corresponding lower bound on the average number of(More)
We present a constraint-coding scheme to correct large numbers of asymmetric magnitude-1 errors in multi-level non-volatile memories. The scheme is shown to deliver better correction capability compared to known alternatives, while admitting low-complexity of decoding. Our results include an algebraic formulation of the constraint, necessary and sufficient(More)
Multi-level memory cells are used in non-volatile memories in order to increase the storage density. Using multilevel cells, however, imposes lower read and write speeds, limiting their usability with high-performing applications. In this work we study the tradeoff between storage density and write/read speeds using codes. The contributions are codes that(More)
We present a constraint-coding scheme to correct asymmetric magnitude-1 errors in multi-level non-volatile memories. For large numbers of such errors, the scheme is shown to deliver better correction capability compared to known alternatives, while admitting low-complexity of decoding. Our results include an algebraic formulation of the constraint,(More)
Advanced science and technology frequently encounters the need to detect particles in the micrometer and nanometer range of a given composition. While the scattering process of light by small particles is well documented, most conventional analytic methods employ wide illumination of large ensembles of particles. With such an approach, no information can be(More)
Multi-level memory cells are used in non-volatile memories in order to increase the storage density. Using multi-level cells, however, imposes higher read and write latencies limiting high speed applications. In this work we study the tradeoff between storage density and write/read performance using codes. The contributions are codes that give(More)