Patents by Inventor Indranil S. Sen
Indranil S. Sen 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).
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Patent number: 11265929Abstract: A secure ranging system can use a secure processing system to deliver one or more ranging keys to a ranging radio on a device, and the ranging radio can derive locally at the system ranging codes based on the ranging keys. A deterministic random number generator can derive the ranging codes using the ranging key and one or more session parameters, and each device (e.g. a cellular telephone and another device) can independently derive the ranging codes and derive them contemporaneously with their use in ranging operations.Type: GrantFiled: April 14, 2017Date of Patent: March 1, 2022Assignee: APPLE INC.Inventors: Jerrold V. Hauck, Alejandro J. Marquez, Timothy R. Paaske, Indranil S. Sen, Herve Sibert, Yannick L. Sierra, Raman S. Thiara
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Patent number: 11218876Abstract: 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: GrantFiled: January 30, 2018Date of Patent: January 4, 2022Assignee: Apple Inc.Inventors: Shang-Te Yang, Xu Chen, Alejandro J. Marquez, Mohit Narang, Indranil S. Sen
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Patent number: 11212642Abstract: 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: GrantFiled: April 1, 2019Date of Patent: December 28, 2021Assignee: Apple Inc.Inventors: Brent M. Ledvina, Robert W. Brumley, Robert William Mayor, William J. Bencze, Alejandro J. Marquez, Shang-Te Yang, Xu Chen, Indranil S. Sen, Mohit Narang
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Patent number: 11184810Abstract: Methods and apparatuses are presented to locate a wireless communication device. A target device may be out of range of a source device for normal ranging communications according to a first radio access technology (RAT), such as ultra wideband (UWB) communications. A source device may therefore modify communications according to the first RAT, to increase the transmit power, while removing the data payload. The target device may utilize the signal strength and angle of arrival of the modified communications to guide the user to move toward the source device, e.g., until the target device is within range to perform normal ranging communications. A second RAT, such as Bluetooth, may be used to communicate between the two devices while the target device is out of range of the first RAT. For example, the target device may use the second RAT to communicate to the source device to start/stop transmitting modified communications.Type: GrantFiled: August 14, 2019Date of Patent: November 23, 2021Assignee: Apple Inc.Inventors: Vusthla Sunil Reddy, Alejandro J. Marquez, Indranil S. Sen, Manjit S. Walia, Peter M. Agboh, Shang-Te Yang, Xiaoming Yu
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Patent number: 11150717Abstract: A technique for dynamically adjusting power use of an input/output (I/O) interface of an electronic device is provided. The electronic device includes an input/output (I/O) interface that facilitates electronic communications with a receiving electronic device, at a particular transmission rate that is dynamically changeable by the electronic device. Transmission power and transmission rate adjustment circuitry determines whether a step-down in a transmission power used for signal transmission at the particular transmission rate is desirable. When desirable, the transmission power is dynamically adjusted down one step, such that less power is used by the I/O interface during the electronic communications.Type: GrantFiled: September 12, 2019Date of Patent: October 19, 2021Assignee: Apple Inc.Inventors: Diego C. Hernandez, Harneet Singh Oberoi, Indranil S. Sen, Kevin C. Camilleri, Raghuram C. Kamath, Vusthla Sunil Reddy
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Publication number: 20210297809Abstract: 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: ApplicationFiled: June 7, 2021Publication date: September 23, 2021Inventors: Amit S. Sant, Alejandro J. Marquez, Indranil S. Sen, Mohit Narang, Shang-Te Yang
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Publication number: 20210234577Abstract: 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: ApplicationFiled: April 12, 2021Publication date: July 29, 2021Inventors: Hsin-Yuo Liu, Peter M. Agboh, Mohit Narang, Indranil S. Sen, Nicholas M. McDonnell, Chia Yiaw Chong
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Patent number: 11061490Abstract: 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: GrantFiled: June 26, 2020Date of Patent: July 13, 2021Assignee: Apple Inc.Inventors: Bing Jiang, Blake R. Marshall, Indranil S. Sen, Liquan Tan, Reza Nasiri Mahalati, Yi Jiang, Mohit Narang
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Publication number: 20210184714Abstract: A dynamic specific absorption rate (SAR) may be implemented by monitoring and controlling power utilization of the various radio frequency (RF) emitting components over time within a mobile device. Power utilization may be tracked and modified to control the time-averaged RF exposure over a rolling time window. Periodically calculations of the updated rolling averages for RF transmissions may be performed based on the transmission data received from the mobile device components, and the continuously updated rolling averages of RF transmissions may be compared to time-average power utilization limits. Based on such comparisons, the mobile device may dynamically adjust the current transmissions of the radio transceivers and other RF emitting components on the mobile device.Type: ApplicationFiled: March 1, 2021Publication date: June 17, 2021Inventors: Digvijay A. Jadhav, Gary Leung, Mark D. Neumann, Indranil S. Sen
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Publication number: 20210185620Abstract: Multi-radio wireless network devices are capable of transmitting and/or receiving data from multiple radiofrequency (RF) networks at different bands. Total transmission power limitations may be in place due to, for example, safety reasons. As a result, active management of transmission power may be performed during simultaneous transmission in different bands and/or networks. In some embodiments, the management may take place on group-by-group basis and a network-by-network basis. Antennas may be grouped based on their relative positions and impact on radiation emitted by the devices.Type: ApplicationFiled: March 1, 2021Publication date: June 17, 2021Inventors: Digvijay Arjunrao Jadhav, Indranil S. Sen, Jonathan C. King, Mohit Narang, Prathyusha Sangepu, Qiong Wu, Shrenik Milapchand, Vijay Gadde, Yu Chen
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Patent number: 11032668Abstract: 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: GrantFiled: July 15, 2019Date of Patent: June 8, 2021Assignee: Apple Inc.Inventors: Amit S. Sant, Alejandro J. Marquez, Indranil S. Sen, Mohit Narang, Shang-Te Yang
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Patent number: 10979106Abstract: 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: GrantFiled: May 14, 2020Date of Patent: April 13, 2021Assignee: Apple Inc.Inventors: Hsin-Yuo Liu, Peter M. Agboh, Mohit Narang, Indranil S. Sen, Nicholas M. McDonnell, Chia Yiaw Chong
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Publication number: 20210099194Abstract: A dynamic specific absorption rate (SAR) may be implemented by monitoring and controlling power utilization of the various radio frequency (RF) emitting components over time within a mobile device. Power utilization may be tracked and modified to control the time-averaged RF exposure over a rolling time window. Periodically calculations of the updated rolling averages for RF transmissions may be performed based on the transmission data received from the mobile device components, and the continuously updated rolling averages of RF transmissions may be compared to time-average power utilization limits. Based on such comparisons, the mobile device may dynamically adjust the current transmissions of the radio transceivers and other RF emitting components on the mobile device.Type: ApplicationFiled: February 11, 2020Publication date: April 1, 2021Applicant: Apple Inc.Inventors: Digvijay A. Jadhav, Gary Leung, Mark D. Neumann, Indranil S. Sen
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Patent number: 10965335Abstract: A dynamic specific absorption rate (SAR) may be implemented by monitoring and controlling power utilization of the various radio frequency (RF) emitting components over time within a mobile device. Power utilization may be tracked and modified to control the time-averaged RF exposure over a rolling time window. Periodically calculations of the updated rolling averages for RF transmissions may be performed based on the transmission data received from the mobile device components, and the continuously updated rolling averages of RF transmissions may be compared to time-average power utilization limits. Based on such comparisons, the mobile device may dynamically adjust the current transmissions of the radio transceivers and other RF emitting components on the mobile device.Type: GrantFiled: February 11, 2020Date of Patent: March 30, 2021Assignee: Apple Inc.Inventors: Digvijay A. Jadhav, Gary Leung, Mark D. Neumann, Indranil S. Sen
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Patent number: 10939387Abstract: Multi-radio wireless network devices are capable of transmitting and/or receiving data from multiple radiofrequency (RF) networks at different bands. Total transmission power limitations may be in place due to, for example, safety reasons. As a result, active management of transmission power may be performed during simultaneous transmission in different bands and/or networks. In some embodiments, the management may take place on group-by-group basis and a network-by-network basis. Antennas may be grouped based on their relative positions and impact on radiation emitted by the devices.Type: GrantFiled: April 11, 2019Date of Patent: March 2, 2021Assignee: Apple Inc.Inventors: Digvijay Arjunrao Jadhav, Indranil S. Sen, Jonathan C. King, Mohit Narang, Prathyusha Sangepu, Qiong Wu, Shrenik Milapchand, Vijay Gadde, Yu Chen
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Publication number: 20210051532Abstract: Methods and apparatuses are presented to locate a wireless communication device. A target device may be out of range of a source device for normal ranging communications according to a first radio access technology (RAT), such as ultra wideband (UWB) communications. A source device may therefore modify communications according to the first RAT, to increase the transmit power, while removing the data payload. The target device may utilize the signal strength and angle of arrival of the modified communications to guide the user to move toward the source device, e.g., until the target device is within range to perform normal ranging communications. A second RAT, such as Bluetooth, may be used to communicate between the two devices while the target device is out of range of the first RAT. For example, the target device may use the second RAT to communicate to the source device to start/stop transmitting modified communications.Type: ApplicationFiled: August 14, 2019Publication date: February 18, 2021Inventors: Vusthla Sunil Reddy, Alejandro J. Marquez, Indranil S. Sen, Manjit S. Walia, Peter M. Agboh, Shang-Te Yang, Xiaoming Yu
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Publication number: 20200403665Abstract: Systems, methods, and devices for grouping client devices based on sensor data in an assisted wireless communication system are provided. Sensor data may include device mobility, device type, and device application data usage, among other characteristics. An assisted wireless communication system may include client devices sending data to an access point. The clients may send conventional protocol data over a channel and, concurrently, send sensor data over an alternative channel. In some cases, client devices may exchange their protocol data, modify their own protocol data based on the exchanged data, and send the modified protocol data to the access point. This may allow the clients to adjust their grouping.Type: ApplicationFiled: September 9, 2020Publication date: December 24, 2020Inventors: Raghuram C. Kamath, Diego C. Hernandez, Harneet Singh Oberoi, Indranil S. Sen
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Patent number: 10848409Abstract: Methods for a data-less ranging procedure may include initiating a ranging procedure via a polling message transmitted at a first time and receiving response messages at second and third times. The time intervals between the first and second time and the second and third times may be pre-defined. A time of flight may be calculated based on the pre-defined time intervals and the first, second, and third times.Type: GrantFiled: September 18, 2018Date of Patent: November 24, 2020Assignee: Apple Inc.Inventors: Alejandro J. Marquez, Shang-Te Yang, Mohit Narang, Indranil S. Sen, Joachim S. Hammerschmidt, Hung Kwan Oscar Au, Dineshan Poopalaratnam
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Publication number: 20200326790Abstract: 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: ApplicationFiled: June 26, 2020Publication date: October 15, 2020Inventors: Bing Jiang, Blake R. Marshall, Indranil S. Sen, Liquan Tan, Reza Nasiri Mahalati, Yi Jiang, Mohit Narang
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Patent number: 10784931Abstract: Systems, methods, and devices for grouping client devices based on sensor data in an assisted wireless communication system are provided. Sensor data may include device mobility, device type, and device application data usage, among other characteristics. An assisted wireless communication system may include client devices sending data to an access point. The clients may send conventional protocol data over a channel and, concurrently, send sensor data over an alternative channel. In some cases, client devices may exchange their protocol data, modify their own protocol data based on the exchanged data, and send the modified protocol data to the access point. This may allow the clients to adjust their grouping.Type: GrantFiled: June 8, 2018Date of Patent: September 22, 2020Assignee: Apple Inc.Inventors: Raghuram C. Kamath, Diego C. Hernandez, Harneet Singh Oberoi, Indranil S. Sen