Patents by Inventor Daniel Fred Filipovic
Daniel Fred Filipovic 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: 11800464Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device.Type: GrantFiled: July 24, 2020Date of Patent: October 24, 2023Assignee: QUALCOMM IncorporatedInventors: Jie Wu, Daniel Fred Filipovic, Emilija Milorad Simic, Vishal Agarwal
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Publication number: 20210014802Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device.Type: ApplicationFiled: July 24, 2020Publication date: January 14, 2021Inventors: Jie WU, Daniel Fred FILIPOVIC, Emilija Milorad SIMIC, Vishal AGARWAL
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Patent number: 10772053Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device.Type: GrantFiled: May 2, 2019Date of Patent: September 8, 2020Assignee: QUALCOMM IncorporatedInventors: Jie Wu, Daniel Fred Filipovic, Emilija Milorad Simic, Vishal Agarwal
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Patent number: 10397887Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device.Type: GrantFiled: January 26, 2018Date of Patent: August 27, 2019Assignee: QUALCOMM IncorporatedInventors: Jie Wu, Daniel Fred Filipovic, Emilija Milorad Simic, Vishal Agarwal
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Publication number: 20190261293Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device.Type: ApplicationFiled: May 2, 2019Publication date: August 22, 2019Inventors: Jie WU, Daniel Fred FILIPOVIC, Emilija Milorad SIMIC, Vishal AGARWAL
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Patent number: 9998939Abstract: A method of wireless communication is disclosed, in which a wearable device may determine whether a network operator provides support for bursty communication, and communicate directly through the network operator in the bursty communication in response to the determining the network operator provides the support for bursty communication. The support for bursty communication by the network operator may be either integrated into a telephony application server (TAS) or a wearable application server (WAS) that is a separate entity from the TAS and deployed between the TAS and the wearable device. The bursty communication by the wearable device may include receiving packets in the bursty communication, buffering the received packets, and transmitting or playing out the bursty communication in entirety after all of the packets in the bursty communication have been received. Apparatus corresponding to such method is also disclosed.Type: GrantFiled: September 1, 2016Date of Patent: June 12, 2018Assignee: QUALCOMM IncorporatedInventors: Ramachandran Subramanian, Srinivasan Balasubramanian, Daniel Fred Filipovic
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Publication number: 20180160381Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device.Type: ApplicationFiled: January 26, 2018Publication date: June 7, 2018Inventors: Jie WU, Daniel Fred FILIPOVIC, Emilija Milorad SIMIC, Vishal AGARWAL
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Patent number: 9907035Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device.Type: GrantFiled: March 4, 2013Date of Patent: February 27, 2018Assignee: QUALCOMM IncorporatedInventors: Jie Wu, Daniel Fred Filipovic, Emilija Milorad Simic, Vishal Agarwal
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Patent number: 9819080Abstract: This disclosure provides systems, methods, and apparatus for antenna switching for simultaneous communication. In one embodiment, a wireless communication apparatus is provided. The wireless communication apparatus includes a plurality of antennas including a first antenna and a second antenna. The wireless communication apparatus further includes a plurality of transmit circuits including a first transmit circuit. The wireless communication apparatus further includes a controller configured to selectively switch the first transmit circuit from transmitting wireless communications via the first antenna to transmit wireless communications via the second antenna based on one or more uplink performance characteristics of at least one of the first antenna and the second antenna. Other aspects, embodiments, and features are also claimed and described.Type: GrantFiled: March 15, 2013Date of Patent: November 14, 2017Assignee: QUALCOMM IncorporatedInventors: Ning He, Hongbo Yan, Daniel Fred Filipovic
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Publication number: 20170272108Abstract: Certain aspects of the present disclosure provide methods and apparatus for adaptive antenna tuning. One example method for wireless communications generally includes determining a first channel characteristic associated with a first component carrier and an antenna in an apparatus; determining a second channel characteristic associated with a second component carrier and the antenna; and controlling a tuner coupled to the antenna based on at least one of the first channel characteristic or the second channel characteristic. For certain aspects, the tuner is controlled according to predetermined characteristics of the tuner, where the predetermined characteristics of the tuner are independent from predetermined characteristics of the antenna.Type: ApplicationFiled: March 16, 2017Publication date: September 21, 2017Inventors: Daniel Fred FILIPOVIC, Adrianus VAN BEZOOIJEN, David Loweth WINSLOW, Jorge FABREGA SANCHEZ
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Patent number: 9712224Abstract: Systems and methods for antenna selection in a wireless terminal with two radios are provided. Signals received using first and second antennas are demodulated by first and second modems according to first and second protocols. A receive path between the second antenna and the second modem can be controlled to receive signals according to the first protocol. A performance measure of demodulating, according to the first protocol, a signal received using the second antenna is determined. The performance measure may be determined using a mirror module in the second modem or using a search module in the first modem. The wireless terminal switches antennas so that the first modem demodulates a signal received using the second antenna, if the performance measure for using the second antenna is such that the switch would improve performance of the first modem.Type: GrantFiled: August 30, 2013Date of Patent: July 18, 2017Assignee: QUALCOMM IncorporatedInventors: Hongbo Yan, Francis M. Ngai, Jafar Mohseni, Daniel Fred Filipovic
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Patent number: 9680422Abstract: Exemplary embodiments are related to power amplifier power level compensation in a pre-distortion system. A method may include applying digital pre-distortion (DPD) of a power amplifier at a frequency channel, a fixed input power value, and a fixed temperature. The method may also include determining an optimal input power value for the power amplifier in response to a change in at least one of frequency and temperature.Type: GrantFiled: January 13, 2014Date of Patent: June 13, 2017Assignee: QUALCOMM IncorporatedInventors: Qijia Liu, Jifeng Geng, Daniel Fred Filipovic, Li Gao
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Patent number: 9680219Abstract: This disclosure provides systems, methods, and apparatus for antenna switching. In one embodiment, a wireless communication apparatus is provided. The wireless communication apparatus includes a plurality of antennas including a first antenna and a second antenna. The wireless communication apparatus further includes at least one receive circuit including a first receive circuit. The wireless communication apparatus further includes a controller configured to selectively switch the first receive circuit from receiving wireless communications via the first antenna to receive wireless communications via the second antenna if one or more performance characteristics of the first antenna are below a threshold in one or more measurement cycles, the one or more measurement cycles including a wake-up cycle outside of a predetermined wake-up cycle. Other aspects, embodiments, and features are also claimed and described.Type: GrantFiled: March 15, 2013Date of Patent: June 13, 2017Assignee: QUALCOMM IncorporatedInventors: Daniel Fred Filipovic, Hongbo Yan, Ning He
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Patent number: 9634697Abstract: A systems, methods and apparatus including a plurality of antennas are provided. The antenna system includes a first antenna, a second antenna, and a measurement device. The measurement device is configured to measure at least a first complex value indicative of an impedance matching of the first antenna and a second complex value indicative of an impedance matching of the second antenna. The antenna system includes an antenna selection controller configured to select one of the first antenna and the second antenna. The antenna selection controller making the selection based on the measurement of the first complex value of the first antenna and the measurement of the second complex value of the second antenna.Type: GrantFiled: September 9, 2015Date of Patent: April 25, 2017Assignee: QUALCOMM IncorporatedInventors: Dineshbabu Natesan, Daniel Fred Filipovic, Ning He, Yi-Chyun Chiou, Tarandeep Virk
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Patent number: 9601828Abstract: This disclosure provides systems, methods, and apparatus for an initial network acquisition process via multiple antennas. In one aspect a method of establishing communications via a wireless network at a wireless communications apparatus is provided. The method includes attempting an initial acquisition process, over one or more frequencies, for establishing communications over the wireless network via a transmit circuit and a receive circuit transmitting and receiving via a first antenna. The method further includes switching the transmit circuit and the receive circuit from transmitting and receiving via the first antenna to a second antenna in response to detecting failure of the initial acquisition process. The switching is independent of a performance metric of the first or the second antenna. The method further includes re-attempting the initial acquisition process based on the switching to the second antenna over the one or more frequencies.Type: GrantFiled: March 15, 2013Date of Patent: March 21, 2017Assignee: QUALCOMM IncorporatedInventors: Ning He, Daniel Fred Filipovic, Ramesh C. Chirala
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Publication number: 20170070246Abstract: A systems, methods and apparatus including a plurality of antennas are provided. The antenna system includes a first antenna, a second antenna, and a measurement device. The measurement device is configured to measure at least a first complex value indicative of an impedance matching of the first antenna and a second complex value indicative of an impedance matching of the second antenna. The antenna system includes an antenna selection controller configured to select one of the first antenna and the second antenna. The antenna selection controller making the selection based on the measurement of the first complex value of the first antenna and the measurement of the second complex value of the second antenna.Type: ApplicationFiled: September 9, 2015Publication date: March 9, 2017Inventors: Dineshbabu NATESAN, Daniel Fred FILIPOVIC, Ning HE, Yi-Chyun CHIOU, Tarandeep VIRK
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Publication number: 20170064572Abstract: A method of wireless communication is disclosed, in which a wearable device may determine whether a network operator provides support for bursty communication, and communicate directly through the network operator in the bursty communication in response to the determining the network operator provides the support for bursty communication. The support for bursty communication by the network operator may be either integrated into a telephony application server (TAS) or a wearable application server (WAS) that is a separate entity from the TAS and deployed between the TAS and the wearable device. The bursty communication by the wearable device may include receiving packets in the bursty communication, buffering the received packets, and transmitting or playing out the bursty communication in entirety after all of the packets in the bursty communication have been received. Apparatus corresponding to such method is also disclosed.Type: ApplicationFiled: September 1, 2016Publication date: March 2, 2017Inventors: Ramachandran Subramanian, Srinivasan Balasubramanian, Daniel Fred Filipovic
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Patent number: 9544040Abstract: A wireless device includes: a first radio and first transceiver configured to transmit and receive according to a first radio access technology; a second radio and second transceiver configured to transmit and receive according to a second radio access technology; a first antenna and a second antenna connected to the first radio and the second radio; a switch; and a control unit configured to control the switch to configure connections of the first and second antennas to the first and second radios. The control unit is configured to control the switch to disconnect the second radio from the second antenna in response to a receiving, by the second radio through the second antenna, a signal that is below a predetermined threshold, and to connect the second radio to the first antenna during a wakeup period of the second radio.Type: GrantFiled: May 12, 2016Date of Patent: January 10, 2017Assignee: QUALCOMM IncorporatedInventors: Hongbo Yan, Francis Ming-Meng Ngai, Daniel Fred Filipovic, Ning He
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Publication number: 20160254851Abstract: A wireless device includes: a first radio and first transceiver configured to transmit and receive according to a first radio access technology; a second radio and second transceiver configured to transmit and receive according to a second radio access technology; a first antenna and a second antenna connected to the first radio and the second radio; a switch; and a control unit configured to control the switch to configure connections of the first and second antennas to the first and second radios. The control unit is configured to control the switch to disconnect the second radio from the second antenna in response to a receiving, by the second radio through the second antenna, a signal that is below a predetermined threshold, and to connect the second radio to the first antenna during a wakeup period of the second radio.Type: ApplicationFiled: May 12, 2016Publication date: September 1, 2016Inventors: Hongbo Yan, Francis Ming-Meng Ngai, Daniel Fred Filipovic, Ning He
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Patent number: 9363849Abstract: A wireless device includes: a first radio and first transceiver configured to transmit and receive according to a first radio access technology; a second radio and second transceiver configured to transmit and receive according to a second radio access technology; a first antenna and a second antenna connected to the first radio and the second radio; a switch; and a control unit configured to control the switch to configure connections of the first and second antennas to the first and second radios. The control unit is configured to control the switch to disconnect the second radio from the second antenna in response to a receiving, by the second radio through the second antenna, a signal that is below a predetermined threshold, and to connect the second radio to the first antenna during a wakeup period of the second radio.Type: GrantFiled: March 17, 2014Date of Patent: June 7, 2016Assignee: QUALCOMM IncorporatedInventors: Hongbo Yan, Francis Ming-Meng Ngai, Daniel Fred Filipovic, Ning He