Patents by Inventor Mohit Narang

Mohit Narang 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: 10356553
    Abstract: Methods and devices useful in performing precise indoor localization and tracking are provided. By way of example, a method includes locating and tracking, via a first wireless electronic device, a plurality of other wireless electronic devices within an indoor environment. The method also includes performing front-back detection, performing stationary node detection, performing angle of arrival (AoA) error correction, and performing field of view (FOV) filtering. Performing indoor localization and tracking of the plurality of other wireless electronic devices includes providing an indication of a physical location of the plurality of other wireless electronic devices within the indoor environment.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: July 16, 2019
    Assignee: APPLE INC.
    Inventors: Amit S. Sant, Alejandro J. Marquez, Indranil S. Sen, Mohit Narang, Shang-Te Yang
  • Patent number: 10340967
    Abstract: A transceiver that allows dynamic high-pass filter (HPF) cut-off frequency adjustment may include a mixer circuit to mix a local oscillator (LO) signal with a receive (RX) signal received from a transmitter to generate a baseband signal. The transceiver may further include a high-pass filter (HPF) having an adjustable cut-off frequency that is used to reduce a DC offset of the baseband signal. A control circuit can dynamically control components of the HPF to set the adjustable cut-off frequency at a first frequency during a first time period and at a second frequency during a second time period.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: July 2, 2019
    Assignee: Apple Inc.
    Inventors: Xinping Zeng, Mohit Narang, Peter M. Agboh, Vusthla Sunil Reddy
  • Publication number: 20190199137
    Abstract: A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may have microwave antennas that extend along an axis in a staggered arrangement. In the staggered arrangement, the microwave antennas are positioned on alternating sides of the axis. Each microwave antenna is elongated along a dimension that is perpendicular to the axis. Multiple antennas may overlap a wireless power receiving antenna in the wireless power receiving device. Control circuitry may use oscillator and amplifier circuitry to provide antennas that have been overlapped by the wireless power receiving antenna with drive signals. The drive signals may be adjusted based on feedback from the wireless power receiving device to enhance power transmission efficiency. The system may have a wireless power transmitting device with inductive wireless power transmitting coils.
    Type: Application
    Filed: February 22, 2018
    Publication date: June 27, 2019
    Inventors: Bing Jiang, Martin Schauer, Indranil S. Sen, Jouya Jadidian, Mark D. Neumann, Mohit Narang, Vaneet Pathak, Yi Jiang
  • Publication number: 20190159285
    Abstract: Exemplary embodiments include a system having a first wireless audio output device and a second wireless audio output device. One of the first or second audio output devices is configured to one of connect as a slave to a source device in a first piconet and connect as a master to the other one of the first or second audio output devices in a second piconet. The one of the first or second wireless audio output devices determines whether an audio packet transmitted by the source device via the first piconet was received by the first wireless audio output device and the second wireless audio output device, and, when at least one of the first wireless audio output device or the second wireless audio output device did not receive the audio packet, the audio packet is exchanged between the first and second wireless audio output devices via the second piconet.
    Type: Application
    Filed: January 3, 2019
    Publication date: May 23, 2019
    Inventors: Lei Li, Xiaojun CHEN, Vusthla Sunil REDDY, Peter M. AGBOH, Mohit NARANG
  • Patent number: 10285013
    Abstract: Methods and devices are provided for allowing a mobile device (e.g., a key fob or a consumer electronic device, such as a mobile phone, watch, or other wearable device) to interact with a vehicle such that a location of the mobile device can be determined by the vehicle, thereby enabling certain functionality of the vehicle. A device may include both RF antenna(s) and magnetic antenna(s) for determining a location of a mobile device relative to the vehicle. Such a hybrid approach can provide various advantages. Existing magnetic coils on a mobile device (e.g., for charging or communication) may be re-used for distance measurements that are supplemented by the RF measurements. Any device antenna may provide measurements to a machine learning model that determines a region in which the mobile device resides, based on training measurements in the regions.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: May 7, 2019
    Assignee: Apple Inc.
    Inventors: Brent M. Ledvina, Robert W. Brumley, Robert William Mayor, William J. Bencze, Alejandro J. Marquez, Shang-Te Yang, Xu Chen, Mohit Narang, Indranil S. Sen
  • Patent number: 10263753
    Abstract: In order to improve the quality of communication between electronic devices, one or more sub-channels used during communication between the electronic devices are dynamically modified based on one or more performance metrics and allowed transmit powers of the sub-channels. In particular, when the one or more performance metrics indicate that a distance between the electronic devices falls within a mid-range of distances, the one or more performance metrics may be used to guide selective changes to the sub-channels used during the communication based on the allowed transmit powers. The changes to the sub-channels used during the communication may increase, decrease or leave the total bandwidth unchanged. Moreover, by changing the sub-channels used during the communication, the allowed transmit power(s) of the sub-channel(s) used may be increased, which may improve the performance during the communication.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: April 16, 2019
    Assignee: Apple Inc.
    Inventors: Lei Li, Xiaojun Chen, Vusthla Sunil Reddy, Diego C. Hernandez, Peter M. Agboh, Mohit Narang, Ruben Caballero, Indranil S. Sen
  • Publication number: 20190103905
    Abstract: A user equipment (UE) including at least two antennas configured to allow the UE to communicate via a first connection. The UE selects a connection performance parameter associated with the first connection, generates historical measurement information for the at least two antennas based on the connection performance parameter, for the plurality of antennas, the historical measurement information indicating an expected performance associated with using a selected one of the at least two antennas for a packet transmission and selects, based at least on the historical measurement information, one of the at least two antennas for use in transmitting the packet.
    Type: Application
    Filed: September 12, 2018
    Publication date: April 4, 2019
    Inventors: Medini GURUPRASAD, Alejandro J. MARQUEZ, Shang-Te YANG, Mohit NARANG, lndranil S. SEN
  • Publication number: 20190097664
    Abstract: A transceiver that allows dynamic high-pass filter (HPF) cut-off frequency adjustment may include a mixer circuit to mix a local oscillator (LO) signal with a receive (RX) signal received from a transmitter to generate a baseband signal. The transceiver may further include a high-pass filter (HPF) having an adjustable cut-off frequency that is used to reduce a DC offset of the baseband signal. A control circuit can dynamically control components of the HPF to set the adjustable cut-off frequency at a first frequency during a first time period and at a second frequency during a second time period.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 28, 2019
    Inventors: Xinping ZENG, Mohit Narang, Peter M. Agboh, Vusthla Sunil Reddy
  • Publication number: 20190098507
    Abstract: Wireless communication between two electronic devices may be used to determine a distance between the two devices, even in the presence of an otherwise-disruptive attacker. A wireless receiver system of one device may receive a true wireless ranging signal from a first transmitting device and a false wireless ranging signal from an attacker. The wireless receiver system may correlate the wireless signals with a known preamble sequence and perform channel estimation using the result, obtaining a channel impulse response for the wireless signals. The wireless receiver system may filter the channel impulse response for the plurality of wireless signals by removing at least part of the channel impulse response due to the false wireless ranging signal while not removing at least part of the channel impulse response due to the true wireless ranging signal. The receiver system may perform a wireless ranging operation using the filtered channel impulse response.
    Type: Application
    Filed: January 30, 2018
    Publication date: March 28, 2019
    Inventors: Shang-Te Yang, Xu Chen, Alejandro J. Marquez, Mohit Narang, Indranil S. Sen
  • Publication number: 20190081614
    Abstract: Systems, methods, and devices are provided to efficiently share an antenna between multiple communication systems and allow for the communication systems to be simultaneously connected to the antenna with less attenuation and/or no fluctuation in signal strength. Communication circuitry may include an antenna that transmits and receives electromagnetic radiation. The communication circuitry may also include an antenna port that provides primary access to the antenna with a first attenuation via an antenna port input. Additionally, the communication circuitry may include a coupler attached to the antenna port. The coupler may provide secondary access to the antenna with a second attenuation.
    Type: Application
    Filed: September 13, 2017
    Publication date: March 14, 2019
    Inventors: Chia Yiaw Chong, Mohit Narang, Peter M. Agboh, Hsin-Yuo Liu, Sultan R. Helmi, Tursunjan Yasin, Ye Chen
  • Patent number: 10206236
    Abstract: A device and method selects an antenna configuration. The method performed at a user equipment includes determining at least one communication functionality that is being used, each communication functionality configured to utilize at least one antenna in a multi-antenna arrangement of the user equipment. The method includes receiving a first indication of whether a cellular communication functionality is being used, the cellular communication functionality configured to utilize at least one antenna in the multi-antenna arrangement. The method includes receiving a second indication of whether a coexistence condition is present. The method includes determining an antenna configuration for the multi-antenna arrangement to be used by the determined communication functionality based upon the determined communication functionality, the first indication, and the second indication.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: February 12, 2019
    Assignee: APPLE INC.
    Inventors: Hsin-Yuo Liu, Ruben Caballero, Mohit Narang, Peter M. Agboh, Paul V. Flynn, Qiong Wu, Nicholas M. McDonnell, Navid Damji, Ming Hu, Wen Zhao
  • Patent number: 10200183
    Abstract: Devices and systems useful in concurrently receiving and transmitting Wi-Fi signals and Bluetooth signals in the same frequency band are provided. By way of example, an electronic device includes a transceiver configured to transmit data and to receive data over channels of a first wireless network and a second wireless network concurrently. The transceiver includes a plurality of filters configured to allow the transceiver to transmit the data and to receive the data in the same frequency band by reducing interference between signals of the first wireless network and the second wireless network.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: February 5, 2019
    Assignee: APPLE INC.
    Inventors: Hsin-Yuo Liu, Peter M. Agboh, Mohit Narang, Indranil S. Sen, Nicholas M. McDonnell, Chia Yiaw Chong
  • Patent number: 10187856
    Abstract: A host device is configured to increase the power output by an internal amplifier of its wireless chipset in response to requests from a remote device. Once the internal amplifier has reached its maximum power, further requests for power increases from the remove device do not similarly lead to automatic power increases being delivered by a external amplifier of the host device. Rather, the host device determines the strength of the link between it and the remote device. If the signal strength is too low, it is an indication that the signal power output by the remote device may not be sufficient to maintain the link and that any further increases in signal power by the host device will have little or no effect on the link. However, if the signal strength from the remote device is sufficient, the host device determines an error rate between it and the remote device. If the error rate is sufficiently low to maintain the link, then the host device will not further increase its signal output power.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: January 22, 2019
    Assignee: Apple Inc.
    Inventors: Mohit Narang, Peter M. Agboh, Qiyang Wu, Ruben Caballero, Vusthla Sunil Reddy, Xi Yang
  • Publication number: 20190013570
    Abstract: Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry and first and second antennas. An electronic device may include a housing. The first antenna may be located at an upper end of the housing and the second antenna may be located at a lower end of the housing. A peripheral conductive member may run around the edges of the housing and may be used in forming the first and second antennas. The radio-frequency transceiver circuitry may have a transmit-receive port and a receive port. Switching circuitry may connect the first antenna to the transmit-receive port and the second antenna to the receiver port or may connect the first antenna to the receive port and the second antenna to the transmit-receive port.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 10, 2019
    Inventors: Ruben Caballero, Mattia Pascolini, Mohit Narang, Matt A. Mow, Robert W. Schlub
  • Patent number: 10178711
    Abstract: Exemplary embodiments include a system having a first wireless audio output device and a second wireless audio output device. One of the first or second audio output devices is configured to one of connect as a slave to a source device in a first piconet and connect as a master to the other one of the first or second audio output devices in a second piconet. The one of the first or second wireless audio output devices determines whether an audio packet transmitted by the source device via the first piconet was received by the first wireless audio output device and the second wireless audio output device, and, when at least one of the first wireless audio output device or the second wireless audio output device did not receive the audio packet, the audio packet is exchanged between the first and second wireless audio output devices via the second piconet.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: January 8, 2019
    Assignee: APPLE INC.
    Inventors: Lei Li, Xiaojun Chen, Vusthla Sunil Reddy, Peter M. Agboh, Mohit Narang
  • Patent number: 10158997
    Abstract: A wireless network may include devices that wirelessly transmit and receive packets. Each packet may include a preamble, a start-of-frame delimiter, a physical layer header, a sequence of symbols between the start-of-frame delimiter and the physical layer header, and a data payload. The sequence of symbols may have a pattern that is resistant to spoofing attacks. A receiving device may have a correlator that correlates known symbols against the symbols in the sequence using overlapping three-symbol-length correlation windows. Early arrival peaks in the output of the correlator may be used to correct time stamp information in the packets and late arrival peaks corresponding to spoofed signals from an attacker may be ignored. Time stamp information may be processed to determine ranges between transmitting and receiving devices.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: December 18, 2018
    Assignee: Apple Inc.
    Inventors: Alejandro J. Marquez, Tushar R. Shah, Mohit Narang, Indranil S. Sen, Shang-Te Yang
  • Publication number: 20180314349
    Abstract: A wireless power transmission system may include a wireless power transmitting device such as a tablet computer and a wireless power receiving device such as a computer stylus. A wireless power transmitting capacitor electrode may be formed in the tablet computer. A wireless power receiving capacitor electrode may be formed in the computer stylus. The transmitting capacitor electrode may be driven by a drive signal having a frequency of 900 MHz or greater to produce wireless power. The wireless power may be transmitted from the transmitting capacitor electrode to the receiving capacitor electrode on the stylus via near field capacitive coupling. The transmitting and receiving capacitor electrodes may each include conductive traces on dielectric substrates. The conductive traces may follow meandering paths to maximize the possible capacitive coupling efficiency between the capacitor electrodes and thus the end-to-end charging efficiency of the wireless power transmission system.
    Type: Application
    Filed: March 1, 2018
    Publication date: November 1, 2018
    Inventors: Bing Jiang, Blake R. Marshall, Indranil S. Sen, Liquan Tan, Reza Nasiri Mahalati, Yi Jiang, Mohit Narang
  • Patent number: 10094902
    Abstract: Systems, methods, and devices are provided to estimate angle of arrival of wireless signals. An electronic device may include two or more antennas that receive a wireless transmission. The wireless transmission includes a first frequency signal at a first frequency and a second frequency signal at a second frequency. The electronic device includes angle of arrival logic that may determine one or more angles of arrival of the wireless transmission to the electronic device using phase difference on arrival based on each of the first and second frequency signals.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: October 9, 2018
    Assignee: Apple Inc.
    Inventors: Alejandro J. Marquez, Mohit Narang, Ruben Caballero, Indranil S. Sen, Shang-Te Yang
  • Patent number: 10063964
    Abstract: An electronic device may include wireless circuitry that is configured to transmit wireless signals during operation. A maximum transmit power level may be established that serves as a cap on how much power is transmitted from the electronic device. Adjustments may be made to the maximum transmit power level in real time based on sensor signals and other information on the operating state of the electronic device. The sensor signals may include motion signals from an accelerometer. The sensor signals may also include ultrasonic sound detected by a microphone. Device orientation data may be used by the device to select whether to measure the ultrasonic sound using a front facing or rear facing microphone. Maximum transmit power level may also be adjusted based on whether or not sound is playing through an ear speaker in the device.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: August 28, 2018
    Assignee: Apple Inc.
    Inventors: Ruben Caballero, Michael DiVincent, Indranil S. Sen, Robert W. Schlub, Mohit Narang, Ricardo R. Velasco, Christopher B. Crowe, Scott Vernon
  • Publication number: 20180234797
    Abstract: Methods and devices are provided for allowing a mobile device (e.g., a key fob or a consumer electronic device, such as a mobile phone, watch, or other wearable device) to interact with a vehicle such that a location of the mobile device can be determined by the vehicle, thereby enabling certain functionality of the vehicle. A device may include both RF antenna(s) and magnetic antenna(s) for determining a location of a mobile device relative to the vehicle. Such a hybrid approach can provide various advantages. Existing magnetic coils on a mobile device (e.g., for charging or communication) may be re-used for distance measurements that are supplemented by the RF measurements. Any device antenna may provide measurements to a machine learning model that determines a region in which the mobile device resides, based on training measurements in the regions.
    Type: Application
    Filed: February 12, 2018
    Publication date: August 16, 2018
    Inventors: Brent M. Ledvina, Robert W. Brumley, Robert William Mayor, William J. Bencze, Alejandro J. Marquez, Shang-Te Yang, Xu Chen, Mohit Narang, Indranil S. Sen