Patents by Inventor Amir Abbas Emadzadeh
Amir Abbas Emadzadeh 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: 20200037905Abstract: A wrist worn heart rate monitor includes a photoplethysmogram (PPG) sensor and an inertial sensor. Signals from the inertial sensor are used to identify and remove noise from the PPG signals. An initial heart rate value is selected from a number of heart rate candidates that remain in the resulting PPG spectrum and is used to track the heart rate of the user. The PPG spectrum is monitored while tracking the heart rate to determine if the selected initial heart rate value is in error. The PPG spectrum may be monitored by determining a correlation of possible heart rate candidates in each PPG spectrum to the previous heart rate candidates and resetting the heart rate value accordingly. Additionally or alternatively, the PPG spectrum may be monitored by determining when only a single heart rate candidate is present in consecutive PPG spectra and resetting the heart rate value accordingly.Type: ApplicationFiled: October 14, 2019Publication date: February 6, 2020Inventor: Amir Abbas Emadzadeh
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Patent number: 10456053Abstract: A wrist worn heart rate monitor includes a photoplethysmogram (PPG) sensor and an inertial sensor. Signals from the inertial sensor are used to identify and remove noise from the PPG signals. An initial heart rate value is selected from a number of heart rate candidates that remain in the resulting PPG spectrum and is used to track the heart rate of the user. The PPG spectrum is monitored while tracking the heart rate to determine if the selected initial heart rate value is in error. The PPG spectrum may be monitored by determining a correlation of possible heart rate candidates in each PPG spectrum to the previous heart rate candidates and resetting the heart rate value accordingly. Additionally or alternatively, the PPG spectrum may be monitored by determining when only a single heart rate candidate is present in consecutive PPG spectra and resetting the heart rate value accordingly.Type: GrantFiled: February 25, 2016Date of Patent: October 29, 2019Assignee: QuickLogic CorporationInventor: Amir Abbas Emadzadeh
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Patent number: 9900918Abstract: Method, device, and computer program product that may improve communications between a mobile device and an access point device are disclosed. In one embodiment, an access point device includes a transceiver configured to receive signals from a mobile device, a processor coupled to the transceiver, and a memory coupled to the processor, the memory having stored thereon code configured to be executed by the processor, the code instructing the processor to: control a plurality of beacons in the access point device, obtain range measurements using the plurality of beacons in the access point device, and assist calibration of a beacon in the mobile device using the range measurements obtained by the plurality of beacons in the access point device.Type: GrantFiled: October 26, 2015Date of Patent: February 20, 2018Assignee: QUALCOMM IncorporatedInventors: Ju-Yong Do, Sai Pradeep Venkatraman, Weihua Gao, Amir Abbas Emadzadeh, Sundar Raman, Gengsheng Zhang
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Publication number: 20170020398Abstract: A wrist worn heart rate monitor includes a photoplethysmogram (PPG) sensor and an inertial sensor. Signals from the inertial sensor are used to identify and remove noise from the PPG signals. An initial heart rate value is selected from a number of heart rate candidates that remain in the resulting PPG spectrum and is used to track the heart rate of the user. The PPG spectrum is monitored while tracking the heart rate to determine if the selected initial heart rate value is in error. The PPG spectrum may be monitored by determining a correlation of possible heart rate candidates in each PPG spectrum to the previous heart rate candidates and resetting the heart rate value accordingly. Additionally or alternatively, the PPG spectrum may be monitored by determining when only a single heart rate candidate is present in consecutive PPG spectra and resetting the heart rate value accordingly.Type: ApplicationFiled: February 25, 2016Publication date: January 26, 2017Inventor: Amir Abbas Emadzadeh
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Patent number: 9432882Abstract: The present disclosure describes methods, systems, computer-readable media, and apparatuses for evaluating the suitability of AP signaling for RTT-based location calculation. Various evaluation methods are disclosed to enable the signaling to be tested for consistency and reliability. An AP may be analyzed by a mobile device or other communications mechanism to determine whether the AP is suitable for RTT-based location signaling. A mobile device receives multiple signals from an evaluated AP at various locations in the indoor area, and derives RTT data from the signals. The RTT data is analyzed to determine whether RTT data from the AP should be used by mobile devices in the process of calculating their location.Type: GrantFiled: November 27, 2013Date of Patent: August 30, 2016Assignee: QUALCOMM INCORPORATEDInventors: Amir Abbas Emadzadeh, Sai Pradeep Venkatraman, Weihua Gao
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Publication number: 20160044718Abstract: Method, device, and computer program product that may improve communications between a mobile device and an access point device are disclosed. In one embodiment, an access point device includes a transceiver configured to receive signals from a mobile device, a processor coupled to the transceiver, and a memory coupled to the processor, the memory having stored thereon code configured to be executed by the processor, the code instructing the processor to: control a plurality of beacons in the access point device, obtain range measurements using the plurality of beacons in the access point device, and assist calibration of a beacon in the mobile device using the range measurements obtained by the plurality of beacons in the access point device.Type: ApplicationFiled: October 26, 2015Publication date: February 11, 2016Inventors: Ju-Yong DO, Sai Pradeep VENKATRAMAN, Weihua GAO, Amir Abbas EMADZADEH, Sundar RAMAN, Gengsheng ZHANG
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Publication number: 20150172865Abstract: Methods, systems, computer-readable media, and apparatuses for obtaining a location fix for a mobile device are presented. In some embodiments, a method includes identifying a region in which the mobile device is located. The method further includes receiving assistance data pertaining to one or more access points within the region, wherein the assistance data is indicative of signal information pertaining to the one or more access points at multiple locations within the region. The method also includes generating, at the mobile device, a heatmap representative of multiple locations within the region as compared against the signal information pertaining to the one or more access points that are in communication range. The method additionally includes determining the location fix based at least in part on the generated heatmap.Type: ApplicationFiled: December 18, 2013Publication date: June 18, 2015Applicant: QUALCOMM IncorporatedInventors: Amir Abbas EMADZADEH, Sai Pradeep Venkatraman, Sundar Raman
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Publication number: 20150146553Abstract: The present disclosure describes methods, systems, computer-readable media, and apparatuses for evaluating the suitability of AP signaling for RTT-based location calculation. Various evaluation methods are disclosed to enable the signaling to be tested for consistency and reliability. An AP may be analyzed by a mobile device or other communications mechanism to determine whether the AP is suitable for RTT-based location signaling. A mobile device receives multiple signals from an evaluated AP at various locations in the indoor area, and derives RTT data from the signals. The RTT data is analyzed to determine whether RTT data from the AP should be used by mobile devices in the process of calculating their location.Type: ApplicationFiled: November 27, 2013Publication date: May 28, 2015Applicant: QUALCOMM IncorporatedInventors: Amir Abbas EMADZADEH, Sai Pradeep VENKATRAMAN, Weihua GAO
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Publication number: 20150045054Abstract: Systems and methods are disclosed for determining the floors on which APs are located for WiFi-based indoor positioning systems. A data collection phase is followed by a data analysis phase. During data collection, measurement data to observed APs may be collected from various locations on different floors. The measurements data may include received signal strength indication (RSSI), optional round-trip-time (RTT) data to the APs, and floor information of the measurement locations. Measurement data may also be collected from crowd sourced data without floor information of the measurement locations. In data analysis, the collected measurement data are analyzed using various algorithms to determine if APs belong to the same floor and to assign APs on the same floor to the same cluster. APs on different floors may thus be assigned to different clusters. If the floor information of the measurement locations is known, each cluster may be assigned a floor number.Type: ApplicationFiled: August 9, 2013Publication date: February 12, 2015Applicant: QUALCOMM IncorporatedInventors: Amir Abbas Emadzadeh, Weihua Gao, Sai Pradeep Venkatraman, Sundar Raman, Ju-Yong Do, Gengsheng Zhang