Patents by Inventor Rajit Manohar

Rajit Manohar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210182073
    Abstract: One aspect of the invention provides a computer processing architecture including: a plurality of processors, each processor configured to: receive a set of data from one or more input channels or from another processor; execute at least one of a plurality of individualized processes on the data; and output the processed data according to an independent clock domain of the processor; a plurality of switches, wherein each switch connects a processor to an input channel of the one or more input channels or to another processor; and a micro-controller configured to: receive the processed data; control the plurality of switches by activating or deactivating each switch; generate a pipeline of processors from activating and deactivating the plurality of switches; and select one or more individualized processes of the plurality of individualized processes that each processor within the pipeline executes.
    Type: Application
    Filed: December 8, 2020
    Publication date: June 17, 2021
    Applicant: Yale University
    Inventors: Ioannis Karageorgos, Karthik Sriram, Jan Vesely, Rajit Manohar, Abhishek Bhattacharjee
  • Patent number: 10705223
    Abstract: Asynchronous Global Positioning System (GPS) baseband processor architectures with a focus on minimizing power consumption. All subsystems run at their natural frequency without clocking and all signal processing is done on-the-fly.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: July 7, 2020
    Assignee: Cornell University
    Inventors: Rajit Manohar, Benjamin Tang, Stephen Longfield, Sunil A. Bhave
  • Publication number: 20200065658
    Abstract: An event-driven neural network includes a plurality of interconnected core circuits is provided. Each core circuit includes an electronic synapse array has multiple digital synapses interconnecting a plurality of digital electronic neurons. A synapse interconnects an axon of a pre-synaptic neuron with a dendrite of a post-synaptic neuron. A neuron integrates input spikes and generates a spike event in response to the integrated input spikes exceeding a threshold. Each core circuit also has a scheduler that receives a spike event and delivers the spike event to a selected axon in the synapse array based on a schedule for deterministic event delivery.
    Type: Application
    Filed: October 28, 2019
    Publication date: February 27, 2020
    Inventors: Filipp Akopyan, John V. Arthur, Rajit Manohar, Paul A. Merolla, Dharmendra S. Modha, Alyosha Molnar, William P. Risk, III
  • Publication number: 20200019839
    Abstract: Methods and apparatus for spiking neural network computing based on e.g., a multi-layer kernel architecture, shared dendritic encoding, and/or thresholding of accumulated spiking signals. In one embodiment, a thresholding accumulator is disclosed that reduces spiking activity between different stages of a neuromorphic processor. Spiking activity can be directly related to power consumption and signal-to-noise ratio (SNR); thus, various embodiments trade-off the costs and benefits associated with threshold accumulation. For example, reducing spiking activity (e.g., by a factor of 10) during an encoding stage can have minimal impact on downstream fidelity (SNR) for a decoding stage, while yielding substantial improvements in power consumption.
    Type: Application
    Filed: July 10, 2019
    Publication date: January 16, 2020
    Inventors: Kwabena Adu Boahen, Sam Brian Fok, Alexander Smith Neckar, Ben Varkey Benjamin Pottayil, Terrence Stewart, Nick Nirmal Oza, Rajit Manohar, Christopher David Eliasmith
  • Publication number: 20200019837
    Abstract: Methods and apparatus for spiking neural network computing based on e.g., a multi-layer kernel architecture, shared dendritic encoding, and/or thresholding of accumulated spiking signals. In one exemplary embodiment, a multi-layer mixed-signal kernel is disclosed that uses different characteristics of its constituent stages to perform neuromorphic computing. Specifically, analog domain processing inexpensively provides diversity, speed, and efficiency, whereas digital domain processing enables a variety of complex logical manipulations (e.g., digital noise rejection, error correction, arithmetic manipulations, etc.). Isolating different processing techniques into different stages between the layers of a multi-layer kernel results in substantial operational efficiencies.
    Type: Application
    Filed: July 10, 2019
    Publication date: January 16, 2020
    Inventors: Kwabena Adu Boahen, Sam Brian Fok, Alexander Smith Neckar, Ben Varkey Benjamin Pottayil, Terrence Charles Stewart, Nick Nirmal Oza, Rajit Manohar, Christopher David Eliasmith
  • Publication number: 20200019838
    Abstract: Methods and apparatus for spiking neural network computing based on e.g., a multi-layer kernel architecture, shared dendritic encoding, and/or thresholding of accumulated spiking signals. A shared dendrite is disclosed that represents the encoding weights of a spiking neural network as tap locations within a mesh of resistive elements. Instead of calculating encoded digital spikes with arithmetic operations, the shared dendrite attenuates current signals as an inherent physical property of tap distance. The disclosed embodiments can approach a desired distribution (e.g., uniform distribution on the D-dimensional unit hypersphere's surface) given a large enough population of computational primitives.
    Type: Application
    Filed: July 10, 2019
    Publication date: January 16, 2020
    Inventors: Kwabena Adu Boahen, Sam Brian Fok, Alexandar Smith Neckar, Ben Varkey Benjamin Pottayill, Terrence Charles Stewart, Nick Nirmal Oza, Rajit Manohar, Christopher David Eliasmith
  • Patent number: 10504021
    Abstract: An event-driven neural network includes a plurality of interconnected core circuits is provided. Each core circuit includes an electronic synapse array has multiple digital synapses interconnecting a plurality of digital electronic neurons. A synapse interconnects an axon of a pre-synaptic neuron with a dendrite of a post-synaptic neuron. A neuron integrates input spikes and generates a spike event in response to the integrated input spikes exceeding a threshold. Each core circuit also has a scheduler that receives a spike event and delivers the spike event to a selected axon in the synapse array based on a schedule for deterministic event delivery.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: December 10, 2019
    Assignees: International Business Machines Corporation, Cornell University
    Inventors: Filipp Akopyan, John V. Arthur, Rajit Manohar, Paul A. Merolla, Dharmendra S. Modha, Alyosha Molnar, William P. Risk, III
  • Publication number: 20190317222
    Abstract: Asynchronous Global Positioning System (GPS) baseband processor architectures with a focus on minimizing power consumption. All subsystems run at their natural frequency without clocking and all signal processing is done on-the-fly.
    Type: Application
    Filed: November 13, 2018
    Publication date: October 17, 2019
    Inventors: Rajit Manohar, Benjamin Tang, Stephen Longfield, Sunil A. Bhave
  • Patent number: 10355851
    Abstract: A synchronization solution is described, which, in one aspect, allowed finer grained segmentation of clock domains on a chip. This solution incorporates computation into the synchronization overhead time and is called Gradual Synchronization. With Gradual Synchronization as a synchronization method, the design space of a chip could easily mix both asynchronous and synchronous blocks of logic, paving the way for wider use of asynchronous logic design.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: July 16, 2019
    Assignee: Cornell University
    Inventors: Rajit Manohar, Sandra J. Jackson
  • Publication number: 20190007190
    Abstract: A synchronization solution is described, which, in one aspect, allowed finer grained segmentation of clock domains on a chip. This solution incorporates computation into the synchronization overhead time and is called Gradual Synchronization. With Gradual Synchronization as a synchronization method, the design space of a chip could easily mix both asynchronous and synchronous blocks of logic, paving the way for wider use of asynchronous logic design.
    Type: Application
    Filed: May 29, 2018
    Publication date: January 3, 2019
    Inventors: Rajit Manohar, Sandra J. Jackson
  • Patent number: 10126428
    Abstract: Asynchronous Global Positioning System (GPS) baseband processor architectures with a focus on minimizing power consumption. All subsystems run at their natural frequency without clocking and all signal processing is done on-the-fly.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: November 13, 2018
    Assignee: Cornell University
    Inventors: Rajit Manohar, Benjamin Tang, Stephen Longfield, Sunil A. Bhave
  • Patent number: 9985774
    Abstract: A synchronization solution is described, which, in one aspect, allowed finer grained segmentation of clock domains on a chip. This solution incorporates computation into the synchronization overhead time and is called Gradual Synchronization. With Gradual Synchronization as a synchronization method, the design space of a chip could easily mix both asynchronous and synchronous blocks of logic, paving the way for wider use of asynchronous logic design.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: May 29, 2018
    Assignee: Cornell University
    Inventors: Rajit Manohar, Sandra J. Jackson
  • Patent number: 9852253
    Abstract: Methods, systems, and devices are disclosed for automatically generating physical layouts of integrated circuits. A circuit is partitioned into one or more cells based on a circuit description. The method further checks availability of a layout of a cell for all the cells generated during the partition step. If a layout of a cell is not available, the method generates a layout of the cell by an automatic tool, and packages the generated layout in a form of a standard cell compatible with a standard cell placement and routing tool. Afterwards, the generated layout may be exported to the standard cell placement and routing tool. Finally, the standard cell placement and routing tool may merge individual layouts of the one or more cells of the circuit to generate a layout for the circuit.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: December 26, 2017
    Assignee: Cornell University
    Inventors: Rajit Manohar, Robert Karmazin, Carlos Tadeo Ortega Otero
  • Publication number: 20170214514
    Abstract: A synchronization solution is described, which, in one aspect, allowed finer grained segmentation of clock domains on a chip. This solution incorporates computation into the synchronization overhead time and is called Gradual Synchronization. With Gradual Synchronization as a synchronization method, the design space of a chip could easily mix both asynchronous and synchronous blocks of logic, paving the way for wider use of asynchronous logic design.
    Type: Application
    Filed: April 6, 2017
    Publication date: July 27, 2017
    Inventors: Rajit Manohar, Sandra J. Jackson
  • Patent number: 9633157
    Abstract: Asynchronous circuits and techniques are described for asynchronous processing without synchronization to a common clock. Two specific energy-efficient pipeline templates for high throughput asynchronous circuits are provided as examples based on single-track handshake protocol. Each pipeline contains multiple stages of logic. The handshake overhead is minimized by eliminating validity and neutrality detection logic gates for all input tokens as well as for all intermediate logic nodes. Both of these templates can pack significant amount of logic within each pipeline block, while still maintaining a fast cycle time.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: April 25, 2017
    Assignee: CORNELL UNIVERSITY
    Inventors: Rajit Manohar, Basit Riaz Sheikh
  • Patent number: 9531194
    Abstract: A device including a pipeline having a number of groups of pipeline stages. Each group has at least one pipeline stage, a gated power supply power net or a gated ground power net, the gated power supply power net and the gated ground power net having components that allow gating power supply and ground to that group of pipeline stages. The device also has a number of control components, each control component controlling the gating of power supply or ground. Each group of pipeline stages controls the gating of power supply and ground of a subsequent group of pipeline stages. Each one group of pipeline stages being selected such that a forward propagation delay from a preceding group of pipeline stages to that one group is at least equal to a time required for activating gated power supply or ground in that one group. Methods of implementation are also discussed.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: December 27, 2016
    Assignee: Cornell University
    Inventors: Rajit Manohar, Carlos Otero, Jonathan Tse
  • Patent number: 9524270
    Abstract: Asynchronous arithmetic units including an asynchronous IEEE 754 compliant floating-point adder and an asynchronous floating point multiplier component. Arithmetic units optimized for lower power consumption and methods for optimization are disclosed.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: December 20, 2016
    Assignee: Cornell University
    Inventors: Rajit Manohar, Basit R. Sheikh
  • Patent number: 9344385
    Abstract: Circuits comprising an asynchronous programmable interconnect with fan out support that include a multi-port switch and a first and second buffer-switch circuit, and methods of forming such circuits, are provided. Additional circuits and methods are disclosed.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: May 17, 2016
    Assignee: Achronix Semiconductor Corporation
    Inventors: Virantha Ekanayake, Clinton W. Kelly, Rajit Manohar
  • Publication number: 20160085898
    Abstract: Methods, systems, and devices are disclosed for automatically generating physical layouts of integrated circuits. A circuit is partitioned into one or more cells based on a circuit description. The method further checks availability of a layout of a cell for all the cells generated during the partition step. If a layout of a cell is not available, the method generates a layout of the cell by an automatic tool, and packages the generated layout in a form of a standard cell compatible with a standard cell placement and routing tool. Afterwards, the generated layout may be exported to the standard cell placement and routing tool. Finally, the standard cell placement and routing tool may merge individual layouts of the one or more cells of the circuit to generate a layout for the circuit.
    Type: Application
    Filed: May 19, 2014
    Publication date: March 24, 2016
    Inventors: Rajit Manohar, Robert Karmazin, Carlos Tadeo Ortega Otero
  • Patent number: 9269044
    Abstract: An event-driven neural network includes a plurality of interconnected core circuits is provided. Each core circuit includes an electronic synapse array has multiple digital synapses interconnecting a plurality of digital electronic neurons. A synapse interconnects an axon of a pre-synaptic neuron with a dendrite of a post-synaptic neuron. A neuron integrates input spikes and generates a spike event in response to the integrated input spikes exceeding a threshold. Each core circuit also has a scheduler that receives a spike event and delivers the spike event to a selected axon in the synapse array based on a schedule for deterministic event delivery.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: February 23, 2016
    Assignees: International Business Machines Corporation, Cornell University
    Inventors: Filipp Akopyan, John V. Arthur, Rajit Manohar, Paul A. Merolla, Dharmendra S. Modha, Alyosha Molnar, William P. Risk, III