Leanics Corporation

Broadcom Corporation

University of Minnesota

Other

The Ohio State University

Keshab K Parhi

Yongru Gu

Jie Chen

Hyung-Il Kim

Jin-Gyun Chung

Robert Allen Freking

Oscar Ernesto Agazzi

Pieter Vorenkamp

Kevin Tunghai Chan

Gottfried Ungerboeck

Myles H Wakayama

Christian Lutkemeyer

Aaron E Cohen

Muqing Liu

Sang-Min Kim

Kwang-Cheol Lee

Kyung-Ju Cho

Chen Zhou

Tong Zhang

William L Freking

Zisheng Zhang

Renfei Liu

Yingjie Lao

Junjin Kong

Zhongfeng Wang

Xinmiao Zhang

S V Sandeep Avvaru

Sandhya Koteshwara

A method includes setting an output of each memory cell in an array of memory cells to a same first value, decreasing power to the array of memory cells and then increasing power to the array of memory cells. Memory cells in the array of memory cells with outputs that switched to a second value different from the first value are then identified in response to decreasing and then increasing the power. A set of memory cells is then selected from the identified memory cells to use in hardware security.

Stable memory cell identification for hardware security

A method includes receiving a first polynomial and a second polynomial, both of order n&#x2212;1 and forming d polynomial segments from both the first polynomial and the second polynomial such that each polynomial segment is of order (n/d)&#x2212;1. The polynomial segments of the first polynomial and the d polynomial segments of the second polynomial are used to form segment products. Each segment product is divided into a first polynomial substructure of order n/d and a second polynomial substructure of order (n/d)&#x2212;1. A first polynomial substructure containing the first n/d coefficients of a product of the first polynomial and the second polynomial is summed with a second polynomial substructure to form a sum substructure. The sum substructure is used multiple times to determine coefficients of a polynomial representing the modulo x+1 of the product of the first polynomial and the second polynomial.

Reduced complexity modular polynomial multiplication for R-LWE cryptosystems

An apparatus includes a first feed-forward PUF, a second feed-forward PUF and an exclusive-or circuit configured to perform an exclusive-or operation of an output of the first feed-forward PUF and an output of the second feed-forward PUF.

Feed-forward XOR physical unclonable functions

An apparatus includes a trigger generator and at least one multiplexer. The trigger generator is configured to generate a non-periodic trigger output. The at least one multiplexer is configured to output a valid control signal and an obfuscated control signal in response to a key value input. The obfuscated control signal is selectively set to one of a valid control signal and an invalid control signal based on the non-periodic trigger output.

Dynamic functional obfuscation

The present invention relates to the design and implementation of a seizure detection or prediction system. The proposed invention computes and selects spectral power ratio features, cross-channel spectral power ratio features, cross spectral power features and cross spectral power ratio features in a patient-specific manner. The selected features are input to a classifier to detect or predict seizures. The proposed algorithm takes advantage of high sensitivity in detecting or predicting seizures and low complexity in implementation. The proposed scheme is general and is suitable for creating a trigger for therapy delivery in a closed-loop therapy system. The therapy could involve either delivery of an anti-epileptic drug or electrical or magnetic stimulation of the brain.

Method and apparatus for prediction and detection of seizure activity

An apparatus includes a finite state machine and a physical structure capable of providing a response to a challenge, the physical structure such that before the physical structure is ever provided with the challenge, the response to the challenge is unpredictable. The finite state machine moves from an initial state to an intermediate state due to receiving the response from the physical structure, and moves from the intermediate state to a final state due to receiving a key. The final state indicates whether the physical structure is a counterfeit physical structure.

Robust device authentication

The present invention relates to data processing techniques in multi-channel data transmission systems. In this invention, a novel approach is proposed to deal with FEXT interferences in the application of high/ultra-high speed Ethernet systems. Compared with the traditional FEXT cancellation approaches, the proposed FEXT canceller can deal with the non-causal part of FEXT, and thus can achieve better cancellation performance. Instead of using the conventional DFE, structure, TH precoding technique is incorporated into the proposed design to alleviate the error propagation problem. The resulting FEXT cancellers do not contain feedback loops which makes the high speed VLSI implementation easy. A modified design is also developed by using a finite signal as the input to the FEXT canceller such that the hardware complexity of the proposed FEXT canceller can be reduced.

System for FEXT cancellation of multi-channel transceivers with precoding

The present invention relates to design and implementation of low complexity adaptive echo and NEXT cancellers in multi-channel data transmission systems. In this invention, a highly efficient weight update scheme is proposed to reduce the computational cost of the weight update part in adaptive echo and NEXT cancellers. Based on the proposed scheme, the hardware complexity of the weight update part can be further reduced by applying the word-length reduction technique. The proposed scheme is general and suitable for real applications such as design of a low complexity transceiver in 10GBase-T. Different with prior work, this invention considers the complexity reduction in weight update part of the adaptive filters such that the overall complexity of these adaptive cancellers can be significantly reduced.

System for low complexity adaptive ECHO and NEXT cancellers

The present invention relates to data processing techniques in multi-channel data transmission systems. In this invention, a method to efficiently deal with FEXT is proposed and a circuit architecture to implement the proposed MIMO-THP equalizer is developed for the application of high/ultra-high speed Ethernet systems. The proposed method relies on the fact that FEXT inherently contains information about the symbols transmitted from the far end transmitters and it can be viewed as a signal rather than noise. Compared with the traditional FEXT cancellation approaches, the proposed design inherits both advantages of MIMO equalization technique and TH precoding technique, thus having better performance. Unlike the existing MIMO-THP technology, the proposed design completely removes the feedback loops in the existing MIMO-THP architecture. Therefore, pipelining techniques can be easily applied to obtain a high-speed design of a multi-channel DSP transceiver.

System for MIMO equalization of multi-channel transceivers with precoding

Various systems and methods related to equalization precoding in a communications channel are disclosed. In one implementation precoding is performed on signals transmitted over an optical channel. In one implementation precoding and decoding operations are performed in parallel to facilitate high speed processing in relatively low cost circuits. Initialization of the precoders may be realized by transmitting information related to the characteristics of the channel between transceiver pairs.

System and method for high speed communications using digital signal processing

Secure Variable Data Rate Transceivers and methods for implementing Secure Variable Data Rate are presented. An efficient and systematic method and circuit for implementing secure variable data rate transceivers are presented. The SVDR method is based on block ciphers. An index method is presented for minimizing transmission overhead. This allows SVDR to achieve higher security by using the full ciphermode stream.

System for secure variable data rate transmission

A method to design low complexity and low power echo and NEXT cancellers based on wordlength reduction technique is presented. A circuit architecture to implement echo and cancellers is also presented. The low complexity and low power design relies on the fact that a TH precoder can be viewed as an IIR filter with an input equal to the sum of the original input to the TH precoder and a compensation signal. The proposed design also relies on the fact that sum of the original input to the TH precoder and the compensation signal has finite levels, which can be represented in less bits than the original input of the echo and NEXT cancellers. An improved design by exploiting the statistics of the compensation signal is also proposed to further bring down the complexity and power consumption of these cancellers.

System and method for low-power echo and NEXT cancellers

Various systems and methods related to equalization precoding in a communications channel are disclosed. In one implementation preceding is performed on signals transmitted over an optical channel. In one implementation preceding and decoding operations are performed in parallel to facilitate high speed processing in relatively low cost circuits. Initialization of the precoders may be realized by transmitting information related to the characteristics of the channel between transceiver pairs.

The invention relates to techniques for implementing high-speed precoders, such as Tomlinson-Harashima (TH) precoders. In one aspect of the invention, look-ahead techniques are utilized to pipeline a TH precoder, resulting in a high-speed TH precoder. These techniques may be applied to pipeline various types of TH precoders, such as Finite Impulse Response (FIR) precoders and Infinite Impulse Response (IIR) precoders. In another aspect of the invention, parallel processing multiple non-pipelined TH precoders results in a high-speed parallel TH precoder design. Utilization of high-speed TH precoders may enable network providers to for example, operate 10 Gigabit Ethernet with copper cable rather than fiber optic cable.

Growing community of inventors

Maple Grove, MN, United States of America

Keshab K Parhi