Patents by Inventor Shidhartha Das

Shidhartha Das 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).

  • Patent number: 10270416
    Abstract: Many kinds of filters are found in electronic circuits and provide a range of signal processing applications. Such filters can be passive, active, analog or digital and work across a range of frequencies. Present techniques provide an electronic filter circuit comprising resistive and capacitive elements, wherein a resistive element of the filter circuit is provided by a correlated electron material device.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: April 23, 2019
    Assignee: Arm Limited
    Inventors: Bal S. Sandhu, Mudit Bhargava, Akshay Kumar, Piyush Agarwal, Shidhartha Das
  • Patent number: 10224099
    Abstract: Disclosed are devices and methods for storing values, symbols, parameters or conditions in memory devices as states, and subsequently mapping detected states as values, symbols parameters or conditions. In one implementation write operations may place first and second memory elements in a particular impedance state selected from between a low impedance or conductive state and a high impedance or insulative state. The high impedance or insulative state represents a first binary value or symbol while the low high impedance or conductive state represents a second binary value or symbol. Subsequently detected impedance states of the first and second memory elements may be mapped to the second binary value or symbol responsive to either of the detected impedance states being the high impedance or insulative state and the second detected impedance state.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 5, 2019
    Assignee: ARM Ltd.
    Inventors: Mbou Eyole, Shidhartha Das, Emre Ozer, Xabier Iturbe
  • Publication number: 20190064896
    Abstract: A power analysis apparatus includes antenna circuitry gathers readings of electromagnetic waves that emanate from a power delivery network of a circuit to be analysed. Spectral analysis circuitry analyses the readings to determine a resonance frequency from said electromagnetic waves and processing circuitry performs one or more actions based on the resonance frequency.
    Type: Application
    Filed: August 31, 2017
    Publication date: February 28, 2019
    Inventors: Zachharias Hadjilambrou DAS, Shidhartha DAS, Yanos SAZEIDES
  • Patent number: 10181350
    Abstract: A method of writing a state to a correlated electron element in a storage circuit, comprising receiving a write command to write the state into the correlated electron element; reading a stored state of the correlated electron element; comparing the state and the stored state; and enabling a write driver to write the state into the correlated electron element when the state and read state are different.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: January 15, 2019
    Assignee: Arm Limited
    Inventors: Shidhartha Das, Andreas Hansson, Akshay Kumar, Piyush Agarwal, Azeez Jennudin Bhavnagarwala, Lucian Shifren
  • Publication number: 20180366193
    Abstract: A device comprising a storage array, the storage array comprising a first signal line and a second signal line, at least one correlated electron switch in electrical communication with the first signal line and the second signal line, and control circuitry for driving the correlated electron switch with at least one programming signal.
    Type: Application
    Filed: November 29, 2016
    Publication date: December 20, 2018
    Applicant: Arm LTD
    Inventors: Shidhartha DAS, James Edward MYERS, Seng Oon TOH
  • Publication number: 20180330784
    Abstract: Subject matter disclosed herein may relate to correlated electron switch elements and, more particularly, to controlling current through correlated electron switch elements during programming operations.
    Type: Application
    Filed: May 9, 2017
    Publication date: November 15, 2018
    Inventors: Mudit Bhargava, Glen Arnold Rosendale, Akshay Kumar, Piyush Agarwal, Shidhartha Das
  • Patent number: 10127977
    Abstract: Disclosed are methods, systems and devices for operation of non-volatile memory devices. In one aspect, a sense circuit may enable a determination of a current impedance state of a non-volatile memory element while avoiding an unintentional change in the state of the non-volatile memory element.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: November 13, 2018
    Assignee: ARM Ltd.
    Inventors: Shidhartha Das, Mudit Bhargava, Glen Arnold Rosendale
  • Publication number: 20180278445
    Abstract: An apparatus and method are provided for processing a received input signal comprising a sequence of data blocks. Counter circuitry within the apparatus is arranged to receive a digital representation of the input signal, and for each data block generates a count value indicative of occurrences of a property of the digital representation (for example a rising edge or a falling edge) during an associated data block transmission period. Quantization circuitry then maps each count value to a soft decision value from amongst a predetermined set of soft decision values, where the number of soft decision values in the predetermined set exceeds a number of possible data values of the data block. The output circuitry then generates a digital output signal in dependence on the soft decision values.
    Type: Application
    Filed: September 12, 2016
    Publication date: September 27, 2018
    Inventors: Paul Nicholas WHATMOUGH, Shidhartha DAS
  • Publication number: 20180260696
    Abstract: Broadly speaking, embodiments of the present technique provide a neuron for a spiking neural network, where the neuron is formed of at least one Correlated Electron Random Access Memory (CeRAM) element or Correlated Electron Switch (CES) element.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 13, 2018
    Applicant: ARM LTD
    Inventors: Naveen SUDA, Vikas CHANDRA, Brian Tracy CLINE, Saurabh Pijuskumar SINHA, Shidhartha DAS
  • Publication number: 20180254082
    Abstract: Disclosed are methods, systems and devices for operation of non-volatile memory devices. In one aspect, a sense circuit may enable a determination of a current impedance state of a non-volatile memory element while avoiding an unintentional change in the state of the non-volatile memory element.
    Type: Application
    Filed: April 30, 2018
    Publication date: September 6, 2018
    Inventors: Shidhartha Das, Mudit Bhargava, Glen Arnold Rosendale
  • Publication number: 20180233194
    Abstract: A storage bitcell comprising a first inverter cross-coupled with a second inverter, both the first and second inverter being in a path between a first potential and a second potential; wherein a first isolator is connected in the path between the first inverter and the first potential. The storage bitcell has particular application as Static Random-Access Memory (SRAM) circuitry.
    Type: Application
    Filed: April 9, 2018
    Publication date: August 16, 2018
    Inventors: Parameshwarappa Anand Kumar Savanth, James Edward Myers, Pranay Prabhat, David Walter Flynn, Shidhartha Das, David Michael Bull
  • Patent number: 10049739
    Abstract: According to one embodiment of the present disclosure, an apparatus is provided. The apparatus comprises a data input to receive a data signal. The apparatus further comprises a latching circuitry. The latching circuitry comprises a first Correlated Electron Switch (CES) element and a second CES element. The latching circuitry further comprises a control circuit coupled to the first CES element and the second CES element. The control circuit is configured to program impedance states of the first CES element and the second CES element based on the data signal.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: August 14, 2018
    Assignee: ARM Ltd.
    Inventors: Parameshwarappa Anand Kumar Savanth, James Edward Myers, Shidhartha Das
  • Publication number: 20180212582
    Abstract: Many kinds of filters are found in electronic circuits and provide a range of signal processing applications. Such filters can be passive, active, analogue or digital and work across a range of frequencies. Present techniques provide an electronic filter circuit comprising resistive and capacitive elements, wherein a resistive element of the filter circuit is provided by a correlated electron material device.
    Type: Application
    Filed: January 20, 2017
    Publication date: July 26, 2018
    Inventors: Bal S. SANDHU, Mudit BHARGAVA, Akshay KUMAR, Piyush AGARWAL, Shidhartha DAS
  • Publication number: 20180203802
    Abstract: A cache apparatus is provided comprising a data storage structure providing N cache ways that each store data as a plurality of cache blocks. The data storage structure is organised as a plurality of sets, where each set comprises a cache block from each way, and further the data storage structure comprises a first data array and a second data array, where at least the second data array is set associative. A set associative tag storage structure stores a tag value for each cache block, with that set associative tag storage structure being shared by the first and second data arrays. Control circuitry applies an access likelihood policy to determine, for each set, a subset of the cache blocks of that set to be stored within the first data array.
    Type: Application
    Filed: January 8, 2018
    Publication date: July 19, 2018
    Inventors: Ricardo Daniel Queiros ALVES, Nikos NIKOLERIS, Shidhartha DAS, Andreas Lars SANDBERG
  • Patent number: 9997242
    Abstract: Disclosed are methods, systems and devices for operation of non-volatile memory devices. In one aspect, a sense circuit may enable a determination of a current impedance state of a non-volatile memory element while avoiding an unintentional change in the state of the non-volatile memory element.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: June 12, 2018
    Assignee: ARM Ltd.
    Inventors: Shidhartha Das, Mudit Bhargava, Glen Arnold Rosendale
  • Publication number: 20180152252
    Abstract: A device comprises a coupling configured to couple signals to and from a communications path including at least a part of a human or animal body; a data transmitter coupled to the coupling and configured to transmit, from time to time, a data signal of at least a predetermined temporal duration via the communications path; and a data receiver coupled to the coupling and configured to detect the presence of a signal on the communications path at sets of one or more successive detection instances disposed between successive transmissions of the data signal by the data transmitter, the data receiver being configured so that the successive detection instances of a set are temporally separated by no more than the predetermined temporal duration; the device being configured to initiate a processing operation in response to a detection by the data receiver of the presence of a signal on the communications path.
    Type: Application
    Filed: April 15, 2016
    Publication date: May 31, 2018
    Inventors: Paul Nicholas WHATMOUGH, George SMART, Shidhartha DAS, David Michael BULL
  • Publication number: 20180138900
    Abstract: A transition detection circuit (20) and method of operation of such a circuit are provided, the transition detection circuit (20) having pulse generation circuitry (25) to receive an input signal (10) and to generate a pulse signal in response to a transition in the input signal, and pulse detection circuitry (30) to assert an error signal on detection of the pulse signal generated by the pulse generation circuitry. The pulse generation circuitry has pulse control circuitry (35) to control a property of the pulse signal dependent on a timing window indication signal (40). In particular, when the pulse signal is generated at least partly whilst the timing window indication signal is set, the pulse control circuitry (35) controls the property of the pulse signal such that generated pulse signal is detected by the pulse detection circuitry (20).
    Type: Application
    Filed: March 3, 2016
    Publication date: May 17, 2018
    Inventors: Shidhartha DAS, David Michael BULL
  • Patent number: 9972388
    Abstract: Disclosed are methods, systems and devices for powering up devices including non-volatile memory elements in an array of non-volatile memory elements. In one aspect, during a sequence for powering up an integrated device, non-volatile memory elements may be isolated from voltage supplies to avoid in advertent changes of memory states stored in the non-volatile memory elements.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: May 15, 2018
    Assignee: ARM Ltd.
    Inventors: Shidhartha Das, Piyush Agarwal, Akshay Kumar, Azeez Jennudin Bhavnagarwala
  • Publication number: 20180114575
    Abstract: A method of writing a state to a correlated electron element in a storage circuit, comprising receiving a write command to write the state into the correlated electron element; reading a stored state of the correlated electron element; comparing the state and the stored state; and enabling a write driver to write the state into the correlated electron element when the state and read state are different.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 26, 2018
    Applicant: ARM Limited
    Inventors: Shidhartha DAS, Andreas HANSSON, Akshay KUMAR, Piyush AGARWAL, Azeez Jennudin BHAVNAGARWALA, Lucian SHIFREN
  • Publication number: 20180108402
    Abstract: Disclosed are methods, systems and devices for operation of non-volatile memory devices. In one aspect, a sense circuit may enable a determination of a current impedance state of a non-volatile memory element while avoiding an unintentional change in the state of the non-volatile memory element.
    Type: Application
    Filed: October 14, 2016
    Publication date: April 19, 2018
    Inventors: Shidhartha Das, Mudit Bhargava, Glen Arnold Rosendale