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: 11850029Abstract: 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: GrantFiled: July 26, 2021Date of Patent: December 26, 2023Assignee: Northwestern UniversityInventors: Sanjay Mehrotra, Ilya Mikhelson, Alan Varteres Sahakian
-
Publication number: 20220039676Abstract: 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: ApplicationFiled: July 26, 2021Publication date: February 10, 2022Inventors: Sanjay Mehrotra, Ilya Mikhelson, Alan Varteres Sahakian
-
Patent number: 11109768Abstract: 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: GrantFiled: June 20, 2017Date of Patent: September 7, 2021Assignee: Northwestern UniversityInventors: Sanjay Mehrotra, Ilya Mikhelson, Alan V. Sahakian
-
Patent number: 11089269Abstract: 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: GrantFiled: May 12, 2020Date of Patent: August 10, 2021Assignee: Northwestern UniversityInventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
-
Publication number: 20200288091Abstract: 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: ApplicationFiled: May 12, 2020Publication date: September 10, 2020Applicant: Northwestern UniversityInventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
-
Patent number: 10687032Abstract: 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: GrantFiled: August 30, 2018Date of Patent: June 16, 2020Assignee: Northwestern UniversityInventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
-
Publication number: 20180376112Abstract: 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: ApplicationFiled: August 30, 2018Publication date: December 27, 2018Applicant: Northwestern UniversityInventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
-
Patent number: 10091468Abstract: 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: GrantFiled: January 14, 2016Date of Patent: October 2, 2018Assignee: Northwestern UniversityInventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
-
Publication number: 20170367596Abstract: 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: ApplicationFiled: June 20, 2017Publication date: December 28, 2017Inventors: Sanjay Mehrotra, Ilya Mikhelson, Alan V. Sahakian
-
Publication number: 20160212389Abstract: 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: ApplicationFiled: January 14, 2016Publication date: July 21, 2016Inventors: Sanjay Mehrotra, Fatma Seda Memik, Ilya Mikhelson
-
Patent number: 8125834Abstract: 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: GrantFiled: November 16, 2009Date of Patent: February 28, 2012Assignee: SanDisk Technologies Inc.Inventors: Karl M. J. Lofgren, Jeffrey Donald Stai, Anil Gupta, Robert D. Norman, Sanjay Mehrotra
-
Patent number: 7890694Abstract: 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: GrantFiled: May 20, 2009Date of Patent: February 15, 2011Assignee: SanDisk CorporationInventors: Douglas J. Lee, Mehrdad Mofidi, Sanjay Mehrotra, Raul-Adrian Cernea
-
Patent number: 7839685Abstract: 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: GrantFiled: October 1, 2009Date of Patent: November 23, 2010Assignee: SanDisk CorporationInventors: Daniel L. Auclair, Jeffrey Craig, John S. Mangan, Robert D. Norman, Daniel C. Guterman, Sanjay Mehrotra
-
Patent number: 7688643Abstract: 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: GrantFiled: March 24, 2004Date of Patent: March 30, 2010Assignee: SanDisk CorporationInventors: Karl M. J. Lofgren, Jeffrey Donald Stai, Anil Gupta, Robert D. Norman, Sanjay Mehrotra
-
Publication number: 20100064098Abstract: 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: ApplicationFiled: November 16, 2009Publication date: March 11, 2010Inventors: Karl M. J. Lofgren, Jeffrey Donald Stai, Anil Gupta, Robert D. Norman, Sanjay Mehrotra
-
Publication number: 20100020616Abstract: 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: ApplicationFiled: October 1, 2009Publication date: January 28, 2010Inventors: Daniel L. Auclair, Jeffrey Craig, John S. Mangan, Robert D. Norman, Daniel C. Guterman, Sanjay Mehrotra
-
Patent number: 7616484Abstract: 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: GrantFiled: October 26, 2004Date of Patent: November 10, 2009Assignee: SanDisk CorporationInventors: Daniel L. Auclair, Jeffrey Craig, John S. Mangan, Robert D. Norman, Daniel C. Guterman, Sanjay Mehrotra
-
Publication number: 20090228644Abstract: 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: ApplicationFiled: May 20, 2009Publication date: September 10, 2009Inventors: Douglas J. Lee, Mehrdad Mofidi, Sanjay Mehrotra, Raul-Adrian Cernea
-
Patent number: 7548461Abstract: 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: GrantFiled: June 22, 2004Date of Patent: June 16, 2009Assignee: SanDisk CorporationInventors: Daniel L. Auclair, Jeffrey Craig, John S. Mangan, Robert D. Norman, Daniel C. Guterman, Sanjay Mehrotra
-
Patent number: 7492660Abstract: 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: GrantFiled: April 15, 2003Date of Patent: February 17, 2009Assignee: SanDisk CorporationInventors: Eliyahou Harari, Robert D. Norman, Sanjay Mehrotra