High performance phase locked loop

A Tajalli - US Patent 10,057,049, 2018 - Google Patents
Methods and systems are described for receiving N phases of a local clock signal and M
phases of a reference signal, wherein M is an integer greater than or equal to 1 and N is an …

Orthogonal differential vector signaling codes with embedded clock

A Shokrollahi - US Patent 10,055,372, 2018 - Google Patents
Orthogonal differential vector signaling codes are described which support encoded sub-
channels allowing transport of distinct data and clocking signals over the same transport …

Vector signaling codes for densely-routed wire groups

A Shokrollahi, A Hormati, A Tajalli - US Patent 10,333,741, 2019 - Google Patents
Methods and systems are described for receiving signal elements corresponding to a first
group of symbols of a vector signaling codeword over a first densely-routed wire group of a …

High speed communications system

A Hormati, A Tajalli, A Shokrollahi - US Patent 9,832,046, 2017 - Google Patents
Transmission of baseband and carrier-modulated vector codewords, using a plurality of
encoders, each encoder configured to receive information bits and to generate a set of …

Lock detector for phase lock loop

A Tajalli - US Patent 9,906,358, 2018 - Google Patents
Methods and systems are described for generating, using a voltage-controlled oscillator
(VCO), a plurality of phases of a local clock signal, generating a phase-error signal using a …

Skew-resistant multi-wire channel

A Shokrollahi, MW Johnston - US Patent 10,153,591, 2018 - Google Patents
Methods and systems described include a first dielectric material having a plurality of
embedded conductors of a multi-wire channel, the plurality of embedded conductors …

Methods and systems for providing multi-stage distributed decision feedback equalization

A Tajalli - US Patent 10,326,623, 2019 - Google Patents
Pre-charging two or more sets of nodes to set a differential output of a multi-input summation
latch connected to the two or more sets of nodes in a pre-charged state, the two or more sets …

Multi-modal data-driven clock recovery circuit

A Tajalli, A Hormati - US Patent 10,693,473, 2020 - Google Patents
Multi-mode non-return-to-zero (NRZ) and orthogonal differential vector signaling (ODVS)
clock and data recovery circuits having configurable sub-channel multi-input comparator …

Voltage sampler driver with enhanced high-frequency gain

A Tajalli - US Patent 10,003,315, 2018 - Google Patents
Methods and systems are described for receiving, at an input differential branch pair, a set of
input signals, and responsively generating a first differential current, receiving, at an input of …

Multilevel driver for high speed chip-to-chip communications

R Ulrich - US Patent 9,917,711, 2018 - Google Patents
Transmission line driver systems are described which are comprised of multiple paralleled
driver elements. The paralleled structure allows efficient generation of multiple output signal …