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Naftali Sommer, Ofir Shalvi, Mordechai Segal: High stability fast tracking adaptive equalizer for use with time varying communication channels. Texas Instruments Incorporated, Dwight N Holmbo, Wade James Brady III, Frederick J Telecky Jr, May 29, 2001: US06240133 (123 worldwide citation)

An adaptive equalizer capable of tracking rapid channel variations while maintaining high stability and low jitter, and a receiver constructed therefrom. A novel feature of the invention is that is that the equalizer is sectioned, that is constructed from a plurality of feed-forward sections and dec ...


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Dotan Sokolov, Gil Semo, Ofir Shalvi: Memory device with reduced reading latency. Anobit Technologies, Darby & Darby P C, September 22, 2009: US07593263 (113 worldwide citation)

A method for data storage includes providing a memory, which includes first memory cells having a first reading latency and second memory cells having a second reading latency that is higher than the first reading latency. An item of data intended for storage in the memory is divided into first and ...


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Naftali Sommer, Ofir Shalvi: Reducing programming error in memory devices. Anobit Technologies, Darby & Darby P C, April 13, 2010: US07697326 (105 worldwide citation)

A method for storing data in an array (28) of analog memory cells (32) includes defining a constellation of voltage levels (90A, 90B, 90C, 90D) to be used in storing the data. A part of the data is written to a first analog memory cell in the array by applying to the analog memory cell a first volta ...


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Naftali Sommer, Ofir Shalvi, Dotan Sokolov: Reading memory cells using multiple thresholds. Anobit Technologies, Fish & Richardson P C, July 5, 2011: US07975192 (103 worldwide citation)

A method for operating a memory (28) includes storing data, which is encoded with an Error Correction Code (ECC), in analog memory cells (32) of the memory by writing respective analog input values selected from a set of nominal values to the analog memory cells. The stored data is read by performin ...


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Ofir Shalvi, Zeev Cohen, Dotan Sokolov: Adaptive programming of analog memory cells using statistical characteristics. Anobit Technologies, Darby & Darby P C, April 27, 2010: US07706182 (103 worldwide citation)

A method for storing data in a memory that includes a plurality of analog memory cells includes mapping the data to programming values, which are selected from a set of nominal programming values. The set of nominal programming values includes at least a first nominal programming value and a second ...


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Ofir Shalvi, Naftali Sommer: Memory device programming using combined shaping and linear spreading. Anobit Technologies, Darby & Darby PC, December 16, 2008: US07466575 (103 worldwide citation)

A method for data storage includes accepting data for storage in a memory (28) that includes multiple analog memory cells (32). The data is converted to input values. The input values are filtered using a non-linear filtering operation to produce respective shaped values, and the shaped values are c ...


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Lior Ophir, Naftali Sommer, Ofir Shalvi: System and method of data communication using turbo trellis coded modulation combined with constellation shaping with or without precoding. Texas Instruments Incorporated, Abdul Zindani, W James Brady III, Frederick J Telecky Jr, June 20, 2006: US07065147 (80 worldwide citation)

A technique that combines a turbo trellis coded modulation (TTCM) coding scheme with constellation shaping and precoding schemes to implement a binary coded communication system and method that can achieve high performance (high coding gains achieved in combination with shaping gain, and when necess ...


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Ofir Shalvi, Ehud Weinstein: Methods and apparatus particularly useful for blind deconvolution. Ramat University Authority for Applied Research & Industrial Development, Benjamin J Barish, February 1, 1994: US05283813 (67 worldwide citation)

A method and apparatus for controlling an equalizer receiving the output of an unknown system in order to produce a desired response for recovering the input to the system are characterized by iteratively adjusting the equalizer such that the unknown system combined with the equalizer behaves essent ...


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Ofir Shalvi, Mordechai Segal, Zvi Reznic: Method and apparatus for combating impulse noise in digital communications channels. Texas Instruments Incorporated, Tammy L Williams, W James Brady III, Frederick J Telecky Jr, November 11, 2003: US06647070 (60 worldwide citation)

This invention is particularly useful as a system for digital communications over channels that suffer from impulse noise, and particularly over return cable TV channels, downstream cable TV channels, and digital subscriber loops (DSL) channels for high speed communications over twisted pair copper ...