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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Publication number: 20190199137Abstract: 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: ApplicationFiled: February 22, 2018Publication date: June 27, 2019Inventors: Bing Jiang, Martin Schauer, Indranil S. Sen, Jouya Jadidian, Mark D. Neumann, Mohit Narang, Vaneet Pathak, Yi Jiang
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Patent number: 10285013Abstract: 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: February 12, 2018Date of Patent: May 7, 2019Assignee: 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
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Publication number: 20190116619Abstract: 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: ApplicationFiled: April 14, 2017Publication date: April 18, 2019Inventors: 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: 10263753Abstract: 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: GrantFiled: September 10, 2015Date of Patent: April 16, 2019Assignee: Apple Inc.Inventors: Lei Li, Xiaojun Chen, Vusthla Sunil Reddy, Diego C. Hernandez, Peter M. Agboh, Mohit Narang, Ruben Caballero, Indranil S. Sen
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Publication number: 20190098507Abstract: 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: ApplicationFiled: January 30, 2018Publication date: March 28, 2019Inventors: Shang-Te Yang, Xu Chen, Alejandro J. Marquez, Mohit Narang, Indranil S. Sen
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Patent number: 10200183Abstract: 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: June 22, 2016Date of Patent: February 5, 2019Assignee: APPLE INC.Inventors: Hsin-Yuo Liu, Peter M. Agboh, Mohit Narang, Indranil S. Sen, Nicholas M. McDonnell, Chia Yiaw Chong
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Patent number: 10158997Abstract: 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: GrantFiled: March 23, 2017Date of Patent: December 18, 2018Assignee: Apple Inc.Inventors: Alejandro J. Marquez, Tushar R. Shah, Mohit Narang, Indranil S. Sen, Shang-Te Yang
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Publication number: 20180314349Abstract: 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: March 1, 2018Publication date: November 1, 2018Inventors: Bing Jiang, Blake R. Marshall, Indranil S. Sen, Liquan Tan, Reza Nasiri Mahalati, Yi Jiang, Mohit Narang
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Patent number: 10117084Abstract: Resource allocation logic in a user device can determine allocation of a shared resource among different communication modules supporting a number of different communication types (e.g., GNSS, cellular, Wi-Fi, and/or Bluetooth communications) in a context-dependent manner. For example, the logic can determine an operating context of the user device. Based on the operating context, the logic can assign a priority to each of the signal types. The shared resource can be allocated among the signal types based on the priority.Type: GrantFiled: June 9, 2017Date of Patent: October 30, 2018Assignee: Apple Inc.Inventors: Diego C. Hernandez, Indranil S. Sen, Raghuram C. Kamath, Harneet Singh Oberoi
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Patent number: 10094902Abstract: 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: GrantFiled: February 22, 2016Date of Patent: October 9, 2018Assignee: Apple Inc.Inventors: Alejandro J. Marquez, Mohit Narang, Ruben Caballero, Indranil S. Sen, Shang-Te Yang
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Patent number: 10063964Abstract: 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: GrantFiled: March 1, 2017Date of Patent: August 28, 2018Assignee: Apple Inc.Inventors: Ruben Caballero, Michael DiVincent, Indranil S. Sen, Robert W. Schlub, Mohit Narang, Ricardo R. Velasco, Christopher B. Crowe, Scott Vernon
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Publication number: 20180234797Abstract: 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: ApplicationFiled: February 12, 2018Publication date: August 16, 2018Inventors: 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
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Publication number: 20180091952Abstract: 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 9, 2017Publication date: March 29, 2018Inventors: Amit S. Sant, Alejandro J. Marquez, Indranil S. Sen, Mohit Narang, Shang-Te Yang
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Publication number: 20180091962Abstract: Resource allocation logic in a user device can determine allocation of a shared resource among different communication modules supporting a number of different communication types (e.g., GNSS, cellular, Wi-Fi, and/or Bluetooth communications) in a context-dependent manner. For example, the logic can determine an operating context of the user device. Based on the operating context, the logic can assign a priority to each of the signal types. The shared resource can be allocated among the signal types based on the priority.Type: ApplicationFiled: June 9, 2017Publication date: March 29, 2018Applicant: Apple Inc.Inventors: Diego C. Hernandez, Indranil S. Sen, Raghuram C. Kamath, Harneet Singh Oberoi, Gaurav C. Khambholja, Swapnil S. Jain, Qiong Wu, Harsha Shirahatti, Hsin-Yuo Liu
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Publication number: 20170373819Abstract: 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: June 22, 2016Publication date: December 28, 2017Inventors: Hsin-Yuo Liu, Peter M. Agboh, Mohit Narang, Indranil S. Sen, Nicholas M. McDonnell, Chia-Yiaw Chong
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Publication number: 20170336850Abstract: 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: ApplicationFiled: May 23, 2016Publication date: November 23, 2017Inventors: Diego C. Hernandez, Harneet Singh Oberoi, Indranil S. Sen, Kevin C. Camilleri, Raghuram C. Kamath, Vusthla Sunil Reddy
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Publication number: 20170303127Abstract: 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: ApplicationFiled: March 23, 2017Publication date: October 19, 2017Inventors: Alejandro J. Marquez, Tushar R. Shah, Mohit Narang, Indranil S. Sen, Shang-Te Yang
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Publication number: 20170242092Abstract: 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: ApplicationFiled: February 22, 2016Publication date: August 24, 2017Inventors: Alejandro J. Marquez, Mohit Narang, Ruben Caballero, Indranil S. Sen, Shang-Te Yang
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Patent number: 9743223Abstract: Electronic devices may communicate with each other using a “conducted RF link.” Such a conducted RF link is essentially a link that utilizes a conductor or cable that facilitates communication between electronic devices. Instead of the conductor carrying a traditional signal, it carries a modulated RF signal, such as those produced by a typical wireless RF radio like presently available WiFi/Bluetooth® cores.Type: GrantFiled: September 30, 2015Date of Patent: August 22, 2017Assignee: APPLE INC.Inventors: Hsin-Yuo Liu, Indranil S. Sen, Mohit Narang, Peter M. Agboh, Ruben Caballero
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Patent number: 9717109Abstract: To establish a connection between electronic devices some embodiments include a system, method, and/or computer program product for password pairing user-interface devices in wireless proximity. A first electronic device (e.g., a keyboard) transmits an advertising packet, and receives a password, where the password has been generated by a second electronic device (e.g., a smartphone) and the password enables pairing between the first electronic device and the second electronic device. The first electronic device transmits a message including the password to the second electronic device, where the second electronic device is within a predefined range of the first electronic device. In some embodiments the first device receives a command from the second electronic device to transition to a discovery mode, transitions to the discovery mode, and transmits a confirmation to the second electronic device that the first device is in the discovery mode.Type: GrantFiled: June 1, 2016Date of Patent: July 25, 2017Assignee: Apple Inc.Inventors: Xi Yang, Hsin-Yuo Liu, Indranil S. Sen, Vusthla Sunil Reddy, Peter M. Agboh, Mohit Narang, Ruben Caballero, Qiyang Wu