Patents by Inventor Ramesh Raghavan

Ramesh Raghavan 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: 11950900
    Abstract: Elderly people suffer from health issues, and timely detection can save lives. State of the art techniques either make certain assumptions or require clinical data in order to perform the frailty detection, which affects the quality as well as cause inconvenience to the users. The disclosure herein generally relates to patient monitoring and, more particularly, to frailty detection using pedometer sensor data, PIR sensor data, and door sensor data. The system determines activity levels of the user being monitored, based on data from the pedometer sensors, PIR sensors, and door sensors, and based on the determined activity levels, further determines whether the user has frailty or not.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: April 9, 2024
    Assignee: TATA CONSULTANCY SERVICES LIMITED
    Inventors: Ramesh Balaji, Srinivasa Raghavan Venkatachari, Anirudh Thenguvila Purushothaman
  • Patent number: 11881258
    Abstract: Embodiments of the present disclosure provide an apparatus including: a sense amplifier coupled to a memory array and having a set of output terminals, a latch coupled to a first output terminal of the sense amplifier, and a comparator coupled to the latch and a second output terminal of the sense amplifier.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: January 23, 2024
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Ramesh Raghavan, Balaji Jayaraman, Chandrahasa Reddy Dinnipati
  • Patent number: 11881241
    Abstract: A structure includes an array of nonvolatile memory cells, wordlines and bitlines connected to the nonvolatile memory cells, sense amplifiers connected to the nonvolatile memory cells, and reference cells connected to the sense amplifiers. Each of the reference cells has a transistor connected to a variable resistor, one of the wordlines, a reference bitline separate from the bitlines, and the sense amplifiers.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: January 23, 2024
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Chandrahasa Reddy Dinnipati, Ramesh Raghavan, Bipul C. Paul
  • Publication number: 20240021243
    Abstract: Disclosed is a sense circuit with first and second branches connected to first and second inputs of an amplifier. The first branch includes series-connected first transistors between a voltage rail and a data line and a first node between two first transistors and connected to the first input. First transistors on either side of the first node receive corresponding gate bias voltages. The second branch includes series-connected second transistors between the voltage rail and a reference device and a second node between two second transistors and connected to the second input. One first transistor and one second transistor share a common control signal. The first and second branches independently and concurrently generate data and reference voltages on the first and second nodes and the difference between them is sensed by the amplifier. Also disclosed are a non-volatile memory structure incorporating the sense circuit and a method.
    Type: Application
    Filed: July 14, 2022
    Publication date: January 18, 2024
    Inventors: Chandrahasa Reddy Dinnipati, Bipul C. Paul, Ramesh Raghavan
  • Publication number: 20230317130
    Abstract: A structure includes an array of nonvolatile memory cells, wordlines and bitlines connected to the nonvolatile memory cells, sense amplifiers connected to the nonvolatile memory cells, and reference cells connected to the sense amplifiers. Each of the reference cells has a transistor connected to a variable resistor, one of the wordlines, a reference bitline separate from the bitlines, and the sense amplifiers.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Applicant: GlobalFoundries U.S. Inc.
    Inventors: Chandrahasa Reddy Dinnipati, Ramesh Raghavan, Bipul C. Paul
  • Publication number: 20230108737
    Abstract: A solid-state lighting fixture assembly having a lighting fixture with a socket configured to receive a plug associated with one or more accessories to allow for easy in-field mounting of accessories, e.g., controls, onto installed lighting fixtures. The socket may be internally electrically connected to an auxiliary power output of a driver and/or to a battery power pack within the lighting fixture assembly, thereby providing direct-current voltage power for the accessory and, also, allowing for signal transmission to and from the accessory. Each accessory includes one or more sensors and communication components to provide the connected lighting fixture assembly with specific capabilities including, but not limited to, motion detection, ambient light level detection, ambient temperature measurement and wireless communications.
    Type: Application
    Filed: December 7, 2022
    Publication date: April 6, 2023
    Inventors: Ramesh Raghavan, Aymen Chami, Eric Clohosey, Stephen Andrew Entrekin, Xiaoming Dai
  • Publication number: 20230027165
    Abstract: The present disclosure relates to integrated circuits, and more particularly, to a wordline system architecture supporting an erase operation and current-voltage (I-V) characterization and methods of manufacture and operation. In particular, the present disclosure relates to a structure including: a twin cell circuit which is connected to a wordline of a memory array; a sourceline driver which is connected to a sourceline of the memory array for providing a cell level current-voltage (I-V) access of the twin cell circuit; and an integrated analog multiplexor which is connected to the twin cell circuit.
    Type: Application
    Filed: July 20, 2021
    Publication date: January 26, 2023
    Inventors: Ramesh RAGHAVAN, Balaji JAYARAMAN, Ming YIN
  • Publication number: 20230012844
    Abstract: Embodiments of the present disclosure provide an apparatus including: a sense amplifier coupled to a memory array and having a set of output terminals, a latch coupled to a first output terminal of the sense amplifier, and a comparator coupled to the latch and a second output terminal of the sense amplifier.
    Type: Application
    Filed: July 16, 2021
    Publication date: January 19, 2023
    Inventors: Ramesh Raghavan, Balaji Jayaraman, Chandrahasa Reddy Dinnipati
  • Patent number: 11549675
    Abstract: A solid-state lighting fixture assembly having a lighting fixture with a socket configured to receive a plug associated with one or more accessories to allow for easy in-field mounting of accessories, e.g., controls, onto installed lighting fixtures. The socket may be internally electrically connected to an auxiliary power output of a driver and/or to a battery power pack within the lighting fixture assembly, thereby providing direct-current voltage power for the accessory and, also, allowing for signal transmission to and from the accessory. Each accessory includes one or more sensors and communication components to provide the connected lighting fixture assembly with specific capabilities including, but not limited to, motion detection, ambient light level detection, ambient temperature measurement and wireless communications.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: January 10, 2023
    Assignee: MAXLITE, INC.
    Inventors: Ramesh Raghavan, Aymen Chami, Eric Clohosey, Stephen Andrew Entrekin, Xiaoming Dai
  • Patent number: 11329836
    Abstract: A Physically Unclonable Function (PUF) structure includes an array of twin cells divided into two portions: one with first columns and one with second columns. Cells in each first column are connected to a corresponding pair of first bitlines. Cells in each second column are connected to a corresponding pair of second bitlines. A first column decoder is connected to the first bitlines and to a first input of sense amplifier (SA) and a second column decoder is connected to the second bitlines and to a second input of SA. Each read operation to generate a bit is directed to a first cell in a first column and a second cell in a second column and, during the read operation, signals on only one first bitline of the first column containing the first cell and only one second bitline of the second column containing the second cell are compared.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: May 10, 2022
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Toshiaki Kirihata, Balaji Jayaraman, Chandrahasa Reddy Dinnipati, Ramesh Raghavan
  • Publication number: 20220113016
    Abstract: A solid-state lighting fixture assembly having a lighting fixture with a socket configured to receive a plug associated with one or more accessories to allow for easy in-field mounting of accessories, e.g., controls, onto installed lighting fixtures. The socket may be internally electrically connected to an auxiliary power output of a driver and/or to a battery power pack within the lighting fixture assembly, thereby providing direct-current voltage power for the accessory and, also, allowing for signal transmission to and from the accessory. Each accessory includes one or more sensors and communication components to provide the connected lighting fixture assembly with specific capabilities including, but not limited to, motion detection, ambient light level detection, ambient temperature measurement and wireless communications.
    Type: Application
    Filed: December 21, 2021
    Publication date: April 14, 2022
    Inventors: Ramesh Raghavan, Aymen Chami, Eric Clohosey, Stephen Andrew Entrekin, Xiaoming Dai
  • Publication number: 20220003398
    Abstract: A solid-state lighting fixture assembly having a lighting fixture with a socket configured to receive a plug associated with one or more accessories to allow for easy in-field mounting of accessories, e.g., controls, onto installed lighting fixtures. The socket may be internally electrically connected to an auxiliary power output of a driver and/or to a battery power pack within the lighting fixture assembly, thereby providing direct-current voltage power for the accessory and, also, allowing for signal transmission to and from the accessory. Each accessory includes one or more sensors and communication components to provide the connected lighting fixture assembly with specific capabilities including, but not limited to, motion detection, ambient light level detection, ambient temperature measurement and wireless communications.
    Type: Application
    Filed: March 29, 2021
    Publication date: January 6, 2022
    Inventors: Ramesh Raghavan, Aymen Chami, Eric Clohosey, Stephen Andrew Entrekin, Xiaoming Dai
  • Patent number: 11215350
    Abstract: A solid-state lighting fixture assembly having a lighting fixture with a socket configured to receive a plug associated with one or more accessories to allow for easy in-field mounting of accessories, e.g., controls, onto installed lighting fixtures. The socket may be internally electrically connected to an auxiliary power output of a driver and/or to a battery power pack within the lighting fixture assembly, thereby providing direct-current voltage power for the accessory and, also, allowing for signal transmission to and from the accessory. Each accessory includes one or more sensors and communication components to provide the connected lighting fixture assembly with specific capabilities including, but not limited to, motion detection, ambient light level detection, ambient temperature measurement and wireless communications.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: January 4, 2022
    Assignee: MAXLITE, INC.
    Inventors: Ramesh Raghavan, Aymen Chami, Eric Clohosey, Stephen Andrew Entrekin, Xiaoming Dai
  • Patent number: 11125403
    Abstract: A modular vapor-tight light fixture is provided herein which generally includes first and second vapor-tight light modules, and a coupling for connecting the first and second vapor-tight light modules. Each of the vapor-tight light modules includes: a channel housing; a lens secured to the channel housing; a plurality of solid state light generating elements; and, first and second end caps. Each of the channel housings includes first and second rails which each define a mounting channel. The coupling includes mounting strip portions configured such that, with the first and second vapor-tight light modules being adjacent, the mounting strip portions are simultaneously received in the mounting channels of both the first and second vapor-tight light modules. Advantageously, with the subject invention, fully enclosed vapor-tight light modules may be provided at shorter lengths which are connected by the coupling to provide a fixture comparable in length to prior-art vapor-tight light fixtures.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: September 21, 2021
    Assignee: MAXLITE, INC.
    Inventors: Ramesh Raghavan, Jun Xiang
  • Patent number: 11056208
    Abstract: The present disclosure relates to a data dependent sense amplifier with symmetric margining. In particular, the present disclosure relates to a structure including a bias generator circuit that is configured to provide symmetric margining between two logic states of a memory circuit.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: July 6, 2021
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Balaji Jayaraman, Ramesh Raghavan, Rajesh Reddy Tummuru, Toshiaki Kirihata
  • Publication number: 20200408371
    Abstract: A modular vapor-tight light fixture is provided herein which generally includes first and second vapor-tight light modules, and a coupling for connecting the first and second vapor-tight light modules. Each of the vapor-tight light modules includes: a channel housing; a lens secured to the channel housing; a plurality of solid state light generating elements; and, first and second end caps. Each of the channel housings includes first and second rails which each define a mounting channel. The coupling includes mounting strip portions configured such that, with the first and second vapor-tight light modules being adjacent, the mounting strip portions are simultaneously received in the mounting channels of both the first and second vapor-tight light modules. Advantageously, with the subject invention, fully enclosed vapor-tight light modules may be provided at shorter lengths which are connected by the coupling to provide a fixture comparable in length to prior-art vapor-tight light fixtures.
    Type: Application
    Filed: September 4, 2020
    Publication date: December 31, 2020
    Inventors: Ramesh Raghavan, Jun Xiang
  • Patent number: 10794554
    Abstract: A modular vapor-tight light fixture is provided herein which generally includes first and second vapor-tight light modules, and a coupling for connecting the first and second vapor-tight light modules. Each of the vapor-tight light modules includes: a channel housing; a lens secured to the channel housing; a plurality of solid state light generating elements; and, first and second end caps. Each of the channel housings includes first and second rails which each define a mounting channel. The coupling includes mounting strip portions configured such that, with the first and second vapor-tight light modules being adjacent, the mounting strip portions are simultaneously received in the mounting channels of both the first and second vapor-tight light modules. Advantageously, with the subject invention, fully enclosed vapor-tight light modules may be provided at shorter lengths which are connected by the coupling to provide a fixture comparable in length to prior-art vapor-tight light fixtures.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: October 6, 2020
    Assignee: MAXLITE, INC.
    Inventors: Ramesh Raghavan, Jun Xiang
  • Publication number: 20190338904
    Abstract: A modular vapor-tight light fixture is provided herein which generally includes first and second vapor-tight light modules, and a coupling for connecting the first and second vapor-tight light modules. Each of the vapor-tight light modules includes: a channel housing; a lens secured to the channel housing; a plurality of solid state light generating elements; and, first and second end caps. Each of the channel housings includes first and second rails which each define a mounting channel. The coupling includes mounting strip portions configured such that, with the first and second vapor-tight light modules being adjacent, the mounting strip portions are simultaneously received in the mounting channels of both the first and second vapor-tight light modules. Advantageously, with the subject invention, fully enclosed vapor-tight light modules may be provided at shorter lengths which are connected by the coupling to provide a fixture comparable in length to prior-art vapor-tight light fixtures.
    Type: Application
    Filed: December 21, 2018
    Publication date: November 7, 2019
    Inventors: Ramesh Raghavan, Jun Xiang
  • Patent number: 10465870
    Abstract: A light fixture assembly includes a light source, a reflector and a shield. The light source emits a beam of light. The reflector directs at least a portion of the beam of light emitted from the light source. The shield is positioned in the reflector to intercept at least a portion of the light emitted from the light source.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: November 5, 2019
    Assignee: Hubbell Incorporated
    Inventors: Nancy R. Stathes, Federico Collado, Jr., Ramesh Raghavan
  • Patent number: 10184644
    Abstract: A bracket for use with a recessed light fixture includes a side wall. A first bendable tab is positioned in the side wall. A second bendable tab is positioned in the side wall, the second tab being offset from the first tab. A retainer extends from the side wall.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 22, 2019
    Assignee: Hubbell Incorporated
    Inventors: Nancy R. Stathes, Federico Collado, Ramesh Raghavan, Shailesh Naik, Michael Swern