1
Brian Holden, Amin Shokrollahi: Methods and systems for selection of unions of vector signaling codes for power and pin efficient chip-to-chip communication. KANDOU LABS, Invention Mine, July 7, 2015: US09077386 (63 worldwide citation)

Methods and systems are described for communication of data over a communications bus at high speed and high pin efficiency, with good resilience to common mode and other noise. Pin efficiencies of 100% may be achieved even for bus widths of four or fewer wires. Information to be transmitted is enco ...


2
Harm Cronie, Amin Shokrollahi: Finite state encoders and decoders for vector signaling codes. Kandou Labs, TechLaw, May 6, 2014: US08718184 (62 worldwide citation)

In a chip-to-chip communication system and apparatus, a set of physical signals to be conveyed over a communication bus is provided, and mapped to a codeword of a vector signaling code using the physical signals and a state information, wherein a codeword is representable as a vector of plurality of ...


3
Armin Tajalli, Harm Cronie, Amin Shokrollahi: Efficient processing and detection of balanced codes. Kandou Labs, Robert J Irvine III, November 26, 2013: US08593305 (61 worldwide citation)

Circuits that are matched to balanced codes may recover transmitted information in a noise resilient and power efficient manner. Circuit components for processing a balanced code may include one or more of: matched amplification of the signals representing the balanced code, matched equalization and ...


4
Brian Holden, Amin Shokrollahi: Crossbar switch decoder for vector signaling codes. Kandou Labs, Invention Mine, Robert J Irvine III, March 24, 2015: US08989317 (59 worldwide citation)

An efficient decoding of vector signaling codes is obtained using a circuit that ranks received signal levels, designates ranked values as representing particular code elements, and translates those particular code elements into a decoded result. An optimized ranking circuit combines analog crossbar ...


5
Ali Hormati, Amin Shokrollahi, Roger Ulrich: Method for code evaluation using ISI ratio. KANDOU LABS, Invention Mine, August 4, 2015: US09100232 (57 worldwide citation)

An efficient communications apparatus is described for a vector signaling code to transport data and optionally a clocking signal between integrated circuit devices. Methods of designing such apparatus and their associated codes based on a new metric herein called the “ISI Ratio” are described which ...


6
John Fox, Brian Holden, Peter Hunt, John D Keay, Amin Shokrollahi, Andrew Kevin John Stewart, Giuseppe Surace, Roger Ulrich, Richard Simpson: Methods and systems for high bandwidth chip-to-chip communications interface. Kandou Labs, Invention Mine, June 7, 2016: US09362974 (42 worldwide citation)

Systems and methods are described for transmitting data over physical channels to provide a high bandwidth, low latency interface between integrated circuit chips with low power utilization. Communication is performed using group signaling over multiple wires using a vector signaling code, where eac ...


7
Harm Cronie: Multiply accumulate operations in the analog domain. KANDOU LABS, Invention Mine LCC, June 30, 2015: US09069995 (41 worldwide citation)

Fixed capacitive circuits are described which perform arithmetical summation operations over sets of scaled analog values, where the constant parameters of the summations and scaling multiplications are formed as ratios of circuit element values. The passive nature of the design can enable efficient ...


8
Christoph Walter: Multiwire linear equalizer for vector signaling code receiver. KANDOU LABS, Invention Mine, August 11, 2015: US09106465 (31 worldwide citation)

Continuous-time linear equalization of received signals on multiple wire channels while maintaining accurate common mode signal values. Multiwire group signaling using vector signaling codes simultaneously transmits encoded values on multiple wires, requiring multiple receive signals to be sampled s ...


9
John Fox, Brian Holden, Peter Hunt, John D Keay, Amin Shokrollahi, Richard Simpson, Anant Singh, Andrew Kevin John Stewart, Giuseppe Surace: Methods and systems for chip-to-chip communication with reduced simultaneous switching noise. KANDOU LABS, Invention Mine, September 1, 2015: US09124557 (27 worldwide citation)

Systems and methods are described for transmitting data over physical channels to provide a high speed, low latency interface such as between a memory controller and memory devices with significantly reduced or eliminated Simultaneous Switching Output noise. Controller-side and memory-side embodimen ...


10
Amin Shokrollahi, Brian Holden, Richard Simpson: Clock-embedded vector signaling codes. KANDOU LABS, Invention Mine, June 7, 2016: US09363114 (22 worldwide citation)

Vector signaling codes providing guaranteed numbers of transitions per unit transmission interval are described, along with methods and systems for their generation and use. The described architecture may include multiple communications sub-systems, each having its own communications wire group or s ...