Patents by Inventor Sanjay Mehrotra

Sanjay Mehrotra 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: 11850029
    Abstract: Representative methods, apparatus and systems are disclosed for blood pressure and other vital sign monitoring using arterial applanation tonometry, including ambulatory blood pressure and other vital sign monitoring. A representative system comprises a wearable apparatus. The various embodiments measure blood pressure and other vital sign monitoring using a plurality of pressure sensors of a pressure sensor array, with one or more of the pressure sensors 140 applanating an artery, such as a radial artery. In a first embodiment, a pressure sensor signal is utilized which has the highest cross-coherence with the signals of its nearest pressure sensor neighbors of the pressure sensor array. In a second embodiment, Kalman filtering is utilized for the pressure sensor signals from the pressure sensor array.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: December 26, 2023
    Assignee: Northwestern University
    Inventors: Sanjay Mehrotra, Ilya Mikhelson, Alan Varteres Sahakian
  • Publication number: 20220039676
    Abstract: Representative methods, apparatus and systems are disclosed for blood pressure and other vital sign monitoring using arterial applanation tonometry, including ambulatory blood pressure and other vital sign monitoring. A representative system comprises a wearable apparatus. The various embodiments measure blood pressure and other vital sign monitoring using a plurality of pressure sensors of a pressure sensor array, with one or more of the pressure sensors 140 applanating an artery, such as a radial artery. In a first embodiment, a pressure sensor signal is utilized which has the highest cross-coherence with the signals of its nearest pressure sensor neighbors of the pressure sensor array. In a second embodiment, Kalman filtering is utilized for the pressure sensor signals from the pressure sensor array.
    Type: Application
    Filed: July 26, 2021
    Publication date: February 10, 2022
    Inventors: Sanjay Mehrotra, Ilya Mikhelson, Alan Varteres Sahakian
  • Patent number: 11109768
    Abstract: Representative methods, apparatus and systems are disclosed for blood pressure and other vital sign monitoring using arterial applanation tonometry, including ambulatory blood pressure and other vital sign monitoring. A representative system comprises a wearable apparatus. The various embodiments measure blood pressure and other vital sign monitoring using a plurality of pressure sensors of a pressure sensor array, with one or more of the pressure sensors 140 applanating an artery, such as a radial artery. In a first embodiment, a pressure sensor signal is utilized which has the highest cross-coherence with the signals of its nearest pressure sensor neighbors of the pressure sensor array. In a second embodiment, Kalman filtering is utilized for the pressure sensor signals from the pressure sensor array.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: September 7, 2021
    Assignee: Northwestern University
    Inventors: Sanjay Mehrotra, Ilya Mikhelson, Alan V. Sahakian
  • Patent number: 11089269
    Abstract: A medicine container includes a controller and a scale connected with the controller. The scale is configured to measure a weight of a content contained in the medicine container. An inertial measurement unit connects with the controller. The inertial measurement unit is configured to detect a position of the medicine container. The controller is configured to process the position information to ensure that the container is located in an upright position before the weight measurement is considered.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: August 10, 2021
    Assignee: Northwestern University
    Inventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
  • Publication number: 20200288091
    Abstract: A medicine container includes a controller and a scale connected with the controller. The scale is configured to measure a weight of a content contained in the medicine container. An inertial measurement unit connects with the controller. The inertial measurement unit is configured to detect a position of the medicine container. The controller is configured to process the position information to ensure that the container is located in an upright position before the weight measurement is considered.
    Type: Application
    Filed: May 12, 2020
    Publication date: September 10, 2020
    Applicant: Northwestern University
    Inventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
  • Patent number: 10687032
    Abstract: A medicine container includes a controller and a scale connected with the controller. The scale is configured to measure a weight of a content contained in the medicine container. An inertial measurement unit connects with the controller. The inertial measurement unit is configured to detect a position of the medicine container. The controller is configured to process the position information to ensure that the container is located in an upright position before the weight measurement is considered.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: June 16, 2020
    Assignee: Northwestern University
    Inventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
  • Publication number: 20180376112
    Abstract: A medicine container includes a controller and a scale connected with the controller. The scale is configured to measure a weight of a content contained in the medicine container. An inertial measurement unit connects with the controller. The inertial measurement unit is configured to detect a position of the medicine container. The controller is configured to process the position information to ensure that the container is located in an upright position before the weight measurement is considered.
    Type: Application
    Filed: August 30, 2018
    Publication date: December 27, 2018
    Applicant: Northwestern University
    Inventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
  • Patent number: 10091468
    Abstract: A system and a method include a medicine container having a bottle and a cap. The medicine container includes a controller and can include a camera located in the cap. The container can include a scale in the base. The controller controls the camera to take an image of the inside of the container to detect the contents, along with a weight measurement to determine usage of the content. A memory connects with the camera and the scale to store the image and weight data. The container can communicate data with a backend server using a wired or wireless connection upon a trigger event. Multiple containers can be connected to form a network of containers.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: October 2, 2018
    Assignee: Northwestern University
    Inventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
  • Publication number: 20170367596
    Abstract: Representative methods, apparatus and systems are disclosed for blood pressure and other vital sign monitoring using arterial applanation tonometry, including ambulatory blood pressure and other vital sign monitoring. A representative system comprises a wearable apparatus. The various embodiments measure blood pressure and other vital sign monitoring using a plurality of pressure sensors of a pressure sensor array, with one or more of the pressure sensors 140 applanating an artery, such as a radial artery. In a first embodiment, a pressure sensor signal is utilized which has the highest cross-coherence with the signals of its nearest pressure sensor neighbors of the pressure sensor array. In a second embodiment, Kalman filtering is utilized for the pressure sensor signals from the pressure sensor array.
    Type: Application
    Filed: June 20, 2017
    Publication date: December 28, 2017
    Inventors: Sanjay Mehrotra, Ilya Mikhelson, Alan V. Sahakian
  • Publication number: 20160212389
    Abstract: A system and a method include a medicine container having a bottle and a cap. The medicine container includes a controller and can include a camera located in the cap. The container can include a scale in the base. The controller controls the camera to take an image of the inside of the container to detect the contents, along with a weight measurement to determine usage of the content. A memory connects with the camera and the scale to store the image and weight data. The container can communicate data with a backend server using a wired or wireless connection upon a trigger event. Multiple containers can be connected to form a network of containers.
    Type: Application
    Filed: January 14, 2016
    Publication date: July 21, 2016
    Inventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
  • Patent number: 8125834
    Abstract: A memory system includes an array of solid state memory devices which are in communication with and under the control of a controller module via a device bus with very few lines. This forms an integrated-circuit mass storage system which is contemplated to replace a mass storage system such as a disk drive memory in a computer system. Command, address and data information are serialized into component strings and multiplexed before being transferred between the controller module and the array of memory devices. The serialized information are is accompanied by a control signal to help sort out the multiplexed components. Each memory device in the array is mounted on a multi-bit mount and assigned an array address by it an array mount. An A memory device is selected by an appropriate address broadcast over the device bus, without requiring the usual dedicated select signal. A reserved array particular mount multi-bit configuration is used to unconditionally select the device mounted thereon.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: February 28, 2012
    Assignee: SanDisk Technologies Inc.
    Inventors: Karl M. J. Lofgren, Jeffrey Donald Stai, Anil Gupta, Robert D. Norman, Sanjay Mehrotra
  • Patent number: 7890694
    Abstract: An EEPROM system includes flash EEPROM cells organized into subarrays. Pairs of subarrays share row address decoders by sharing word lines, and individual subarrays have dedicated column address decoders and data registers. Each row decoder has an associated row address latch, and each column decoder has an associated column address latch. Multiple data chunks are concurrently written into the subarrays by first latching chunk addresses into the row and column address latches, and corresponding chunks of data into the data registers, then activating a programming signal to initiate concurrent programming and verifying the programming of the data chunks.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: February 15, 2011
    Assignee: SanDisk Corporation
    Inventors: Douglas J. Lee, Mehrdad Mofidi, Sanjay Mehrotra, Raul-Adrian Cernea
  • Patent number: 7839685
    Abstract: Soft errors occur during normal use of a solid-state memory such as EEPROM or Flash EEPROM. A soft error results from the programmed threshold voltage of a memory cell being drifted from its originally intended level. The error is initially not readily detected during normal read until the cumulative drift becomes so severe that it develops into a hard error. Data could be lost if enough of these hard errors swamps available error correction codes in the memory. A memory device and techniques therefor are capable of detecting these drifts and substantially maintaining the threshold voltage of each memory cell to its intended level throughout the use of the memory device, thereby resisting the development of soft errors into hard errors.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: November 23, 2010
    Assignee: SanDisk Corporation
    Inventors: Daniel L. Auclair, Jeffrey Craig, John S. Mangan, Robert D. Norman, Daniel C. Guterman, Sanjay Mehrotra
  • Patent number: 7688643
    Abstract: A memory system includes an array of solidstate memory devices which are in communication with and under the control of a controller module via a device bus with very few lines. This forms an integrated-circuit mass storage system which is contemplated to replace a mass storage system such as a disk drive memory in a computer system. Command, address and data information are serialized into component strings and multiplexed before being transferred between the controller module and the array of memory devices. The serialized information are is accompanied by a control signal to help sort out the multiplexed components. Each memory device in the array is mounted on a multi-bit mount and assigned an array address by it an array mount. An A memory device is selected by an appropriate address broadcast over the device bus, without requiring the usual dedicated select signal. A reserved array particular mount multi-bit configuration is used to unconditionally select the device mounted thereon.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: March 30, 2010
    Assignee: SanDisk Corporation
    Inventors: Karl M. J. Lofgren, Jeffrey Donald Stai, Anil Gupta, Robert D. Norman, Sanjay Mehrotra
  • Publication number: 20100064098
    Abstract: A memory system includes an array of solid state memory devices which are in communication with and under the control of a controller module via a device bus with very few lines. This forms an integrated-circuit mass storage system which is contemplated to replace a mass storage system such as a disk drive memory in a computer system. Command, address and data information are serialized into component strings and multiplexed before being transferred between the controller module and the array of memory devices. The serialized information are is accompanied by a control signal to help sort out the multiplexed components. Each memory device in the array is mounted on a multi-bit mount and assigned an array address by it an array mount. An A memory device is selected by an appropriate address broadcast over the device bus, without requiring the usual dedicated select signal. A reserved array particular mount multi-bit configuration is used to unconditionally select the device mounted thereon.
    Type: Application
    Filed: November 16, 2009
    Publication date: March 11, 2010
    Inventors: Karl M. J. Lofgren, Jeffrey Donald Stai, Anil Gupta, Robert D. Norman, Sanjay Mehrotra
  • Publication number: 20100020616
    Abstract: Soft errors occur during normal use of a solid-state memory such as EEPROM or Flash EEPROM. A soft error results from the programmed threshold voltage of a memory cell being drifted from its originally intended level. The error is initially not readily detected during normal read until the cumulative drift becomes so severe that it develops into a hard error. Data could be lost if enough of these hard errors swamps available error correction codes in the memory. A memory device and techniques therefor are capable of detecting these drifts and substantially maintaining the threshold voltage of each memory cell to its intended level throughout the use of the memory device, thereby resisting the development of soft errors into hard errors.
    Type: Application
    Filed: October 1, 2009
    Publication date: January 28, 2010
    Inventors: Daniel L. Auclair, Jeffrey Craig, John S. Mangan, Robert D. Norman, Daniel C. Guterman, Sanjay Mehrotra
  • Patent number: 7616484
    Abstract: Soft errors occur during normal use of a solid-state memory such as EEPROM or Flash EEPROM. A soft error results from the programmed threshold voltage of a memory cell being drifted from its originally intended level. The error is initially not readily detected during normal read until the cumulative drift becomes so severe that it develops into a hard error. Data could be lost if enough of these hard errors swamps available error correction codes in the memory. A memory device and techniques therefor are capable of detecting these drifts and substantially maintaining the threshold voltage of each memory cell to its intended level throughout the use of the memory device, thereby resisting the development of soft errors into hard errors.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: November 10, 2009
    Assignee: SanDisk Corporation
    Inventors: Daniel L. Auclair, Jeffrey Craig, John S. Mangan, Robert D. Norman, Daniel C. Guterman, Sanjay Mehrotra
  • Publication number: 20090228644
    Abstract: An EEPROM system includes flash EEPROM cells organized into subarrays. Pairs of subarrays share row address decoders by sharing word lines, and individual subarrays have dedicated column address decoders and data registers. Each row decoder has an associated row address latch, and each column decoder has an associated column address latch. Multiple data chunks are concurrently written into the subarrays by first latching chunk addresses into the row and column address latches, and corresponding chunks of data into the data registers, then activating a programming signal to initiate concurrent programming and verifying the programming of the data chunks.
    Type: Application
    Filed: May 20, 2009
    Publication date: September 10, 2009
    Inventors: Douglas J. Lee, Mehrdad Mofidi, Sanjay Mehrotra, Raul-Adrian Cernea
  • Patent number: 7548461
    Abstract: Soft errors occur during normal use of a solid-state memory such as EEPROM or Flash EEPROM. A soft error results from the programmed threshold voltage of a memory cell being drifted from its originally intended level. The error is initially not readily detected during normal read until the cumulative drift becomes so severe that it develops into a hard error. Data could be lost if enough of these hard errors swamps available error correction codes in the memory. A memory device and techniques therefor are capable of detecting these drifts and substantially maintaining the threshold voltage of each memory cell to its intended level throughout the use of the memory device, thereby resisting the development of soft errors into hard errors.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: June 16, 2009
    Assignee: SanDisk Corporation
    Inventors: Daniel L. Auclair, Jeffrey Craig, John S. Mangan, Robert D. Norman, Daniel C. Guterman, Sanjay Mehrotra
  • Patent number: 7492660
    Abstract: A system of Flash EEprom memory chips with controlling circuits serves as non-volatile memory such as that provided by magnetic disk drives. Improvements include selective multiple sector erase, in which any combinations of Flash sectors may be erased together. Selective sectors among the selected combination may also be de-selected during the erase operation. Another improvement is the ability to remap and replace defective cells with substitute cells. The remapping is performed automatically as soon as a defective cell is detected. When the number of defects in a Flash sector becomes large, the whole sector is remapped. Yet another improvement is the use of a write cache to reduce the number of writes to the Flash EEprom memory, thereby minimizing the stress to the device from undergoing too many write/erase cycling.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: February 17, 2009
    Assignee: SanDisk Corporation
    Inventors: Eliyahou Harari, Robert D. Norman, Sanjay Mehrotra