Patents by Inventor Nagula Tharma Sangary
Nagula Tharma Sangary 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: 8477878Abstract: A communications subsystem for a wireless device for correcting errors in a reference frequency signal. The communications subsystem comprises a frequency generator for generating the reference frequency signal and a closed loop reference frequency correction module that generates a reference frequency adjustment signal for correcting the reference frequency signal when the communications subsystem operates in closed loop mode. The subsystem further includes an open loop frequency correction means that that samples values of the reference frequency adjustment signal during the closed loop mode and generates a frequency correction signal for correcting the reference frequency signal when the communications subsystem operates in a mode other than closed loop mode.Type: GrantFiled: September 13, 2012Date of Patent: July 2, 2013Assignee: Research In Motion LimitedInventors: Wen-Yen Chan, Nasserullah Khan, Nagula Tharma Sangary, Qingzhong Jiao, Xin Jin
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Patent number: 8451941Abstract: A communications device may include an In-phase (I) circuit having an In-phase modulator and mixer circuit, and an I power amplifier circuit coupled thereto, the I circuit configured to modulate and amplify a digital baseband I signal to generate an amplified I signal, and a Quadrature (Q) circuit having a Q modulator and mixer circuit, and a Q power amplifier circuit coupled thereto, the Q circuit configured to modulate and amplify a digital baseband Q signal to generate an amplified Q signal separate from the amplified I signal. The communications device may include a processor configured, for example, to selectively switch the digital baseband signal and the digital baseband Q signal between the I and Q signal inputs to provide selective phase shifting for the digital baseband I and Q signals. For example, the controller may selectively phase shift the digital baseband I and Q signals, and control the I and Q power amplifier circuits to vary an amplitude of the amplified I and Q signals.Type: GrantFiled: April 15, 2010Date of Patent: May 28, 2013Assignee: Research In Motion LimitedInventors: Lizhong Zhu, George Soliman Mankaruse, Michael Stephen Corrigan, Perry Jarmuszewski, Oleksiy Kravets, Kent A. Nickerson, Nagula Tharma Sangary
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Patent number: 8442447Abstract: The disclosure is directed to a method, computer program product, or a mobile device configured for obtaining a mobility parameter indicative of a mobility of the mobile device. The mobility parameter may be further utilized to configure the operating state of the mobile device. The mobility parameter is obtained using a multi-sense approach, which utilizes both Received Signal Strength Indicator (RSSI) and Frequency Offset (FO) measurements. The mobility parameter is based on statistical parameters relating to the distributions of the RSSI and FO measurements. Various configurations of computer program products, mobile devices and systems are also described.Type: GrantFiled: February 1, 2010Date of Patent: May 14, 2013Assignee: Research In Motion LimitedInventors: Mahinthan Veluppillai, Nagula Tharma Sangary, Sean Bartholomew Simmons, Perry Jarmuszewski
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Publication number: 20130016800Abstract: A communications subsystem for a wireless device for correcting errors in a reference frequency signal. The communications subsystem comprises a frequency generator for generating the reference frequency signal and a closed loop reference frequency correction module that generates a reference frequency adjustment signal for correcting the reference frequency signal when the communications subsystem operates in closed loop mode. The subsystem further includes an open loop frequency correction means that that samples values of the reference frequency adjustment signal during the closed loop mode and generates a frequency correction signal for correcting the reference frequency signal when the communications subsystem operates in a mode other than closed loop mode.Type: ApplicationFiled: September 13, 2012Publication date: January 17, 2013Applicant: RESEARCH IN MOTION LIMITEDInventors: Wen-Yen CHAN, Xin JIN, Qingzhong JIAO, Nasserullah KHAN, Nagula Tharma SANGARY
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Patent number: 8355751Abstract: A system and method for speed measurement of a mobile device, using an speed sensor such as a satellite navigation system or an accelerometer, does not need such speed sensor to be continually activated. The system and method make use of a monitor for monitoring at least one motion indicium for indicating that the speed of the mobile device is above an initial threshold, including but not limited to: monitoring the Doppler shift measurements of a timing signal; monitoring the timing advance of a cellular radio signal; monitoring the number of base stations visible to the mobile device; monitoring the frequency of base station handover, however determined; monitoring the level crossings and/or the autocorrelation of an RSSI signal; and/or triangulation of the position of the mobile device. When the monitor determines that the mobile device may be travelling in excess of a threshold speed, a speed sensor is activated to confirm the indication.Type: GrantFiled: February 18, 2009Date of Patent: January 15, 2013Assignee: Research In Motion LimitedInventors: David Blaine Dietz, Nagula Tharma Sangary, Sean Bartholomew Simmons, Mihal Lazaridis, Jonathan Cyril Skilton Doll, Perry Jarmuszewskl
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Publication number: 20120329411Abstract: A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block.Type: ApplicationFiled: September 5, 2012Publication date: December 27, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Wen-Yen CHAN, Nasserullah KHAN, Qingzhong JIAO, Xin JIN, Michael HABICHER, Nagula Tharma SANGARY
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Patent number: 8295403Abstract: A communications subsystem for a wireless device for correcting errors in a reference frequency signal. The communications subsystem comprises a frequency generator for generating the reference frequency signal and a closed loop reference frequency correction module that generates a reference frequency adjustment signal for correcting the reference frequency signal when the communications subsystem operates in closed loop mode. The subsystem further includes an open loop frequency correction means that that samples values of the reference frequency adjustment signal during the closed loop mode and generates a frequency correction signal for correcting the reference frequency signal when the communications subsystem operates in a mode other than closed loop mode.Type: GrantFiled: January 30, 2009Date of Patent: October 23, 2012Assignee: Research In Motion LimitedInventors: Wen-Yen M. Chan, Xin Jin, Qingzhong Jiao, Nasserullah Khan, Nagula Tharma Sangary
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Patent number: 8290085Abstract: A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block.Type: GrantFiled: July 28, 2011Date of Patent: October 16, 2012Assignee: Research In Motion LimitedInventors: Wen-Yen Chan, Nasserullah Khan, Xin Jin, Nagula Tharma Sangary, Michael Franz Habicher, Qingzhong Jiao
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Publication number: 20120157027Abstract: A speed parameter or channel quality parameter are determined in a mobile device based on variation in frequency offset measurement. A higher variation in the frequency offset measurement reflects a poorer channel quality and a higher speed; a lower variation in the frequency offset measurement reflects a better channel quality and a lower speed. The parameter(s) may be fed back to the system and used, for example, to make adaptive modulation and coding decisions.Type: ApplicationFiled: February 27, 2012Publication date: June 21, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: NAGULA THARMA SANGARY, SEAN BARTHOLOMEW SIMMONS, DAVID BLAINE DIETZ, PERRY JARMUSZEWSKI, OLEKSIY KRAVETS
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Patent number: 8160503Abstract: A speed parameter or channel quality parameter are determined in a mobile device based on variation in frequency offset measurement. A higher variation in the frequency offset measurement reflects a poorer channel quality and a higher speed; a lower variation in the frequency offset measurement reflects a better channel quality and a lower speed. The parameter(s) may be fed back to the system and used, for example, to make adaptive modulation and coding decisions.Type: GrantFiled: February 27, 2009Date of Patent: April 17, 2012Assignee: Research In Motion LimitedInventors: Nagula Tharma Sangary, Sean Bartholomew Simmons, David Blaine Dietz, Perry Jarmuszewski, Oleksiy Kravets
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Publication number: 20110319124Abstract: A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block.Type: ApplicationFiled: July 28, 2011Publication date: December 29, 2011Applicant: RESEARCH IN MOTION LIMITEDInventors: Wen-Yen Chan, Nasserullah Khan, Qingzhong Jiao, Xin Jin, Nagula Tharma Sangary, Michael Franz Habicher
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Publication number: 20110255575Abstract: A communications device may include an In-phase (I) circuit having an In-phase modulator and mixer circuit, and an I power amplifier circuit coupled thereto, the I circuit configured to modulate and amplify a digital baseband I signal to generate an amplified I signal, and a Quadrature (Q) circuit having a Q modulator and mixer circuit, and a Q power amplifier circuit coupled thereto, the Q circuit configured to modulate and amplify a digital baseband Q signal to generate an amplified Q signal separate from the amplified I signal. The communications device may include a processor configured, for example, to selectively switch the digital baseband signal and the digital baseband Q signal between the I and Q signal inputs to provide selective phase shifting for the digital baseband I and Q signals. For example, the controller may selectively phase shift the digital baseband I and Q signals, and control the I and Q power amplifier circuits to vary an amplitude of the amplified I and Q signals.Type: ApplicationFiled: April 15, 2010Publication date: October 20, 2011Applicant: Research In Motion LimitedInventors: Lizhong Zhu, George Soliman Mankaruse, Michael Stephen Corrigan, Perry Jarmuszewski, Oleksiy Kravets, Kent A. Nickerson, Nagula Tharma Sangary
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Publication number: 20110198929Abstract: A power distribution network includes multiple charge storage components and multiple charging circuits to control the charging and discharging of the charge storage components, which may comprise a battery and a supercapacitor. By appropriate arrangement and selection of the storage components, ripple in the power supply voltage, whose propagation to other components relying on the power distribution network may cause an audible buzz, may be significantly reduced. Additionally, appropriate arrangement and selection of the storage components, electromagnetic interference may also be significantly reduced.Type: ApplicationFiled: February 16, 2010Publication date: August 18, 2011Applicant: RESEARCH IN MOTION LIMITEDInventors: Lizhong Zhu, George Soliman Mankaruse, Michael Stephen Corrigan, Nagula Tharma Sangary
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Patent number: 8000409Abstract: A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block.Type: GrantFiled: July 30, 2010Date of Patent: August 16, 2011Assignee: Research In Motion LimitedInventors: Wen-Yen Chan, Nasserullah Khan, Qingzhong Jiao, Xin Jin, Nagula Tharma Sangary, Michael Franz Habicher
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Publication number: 20110117856Abstract: The disclosure is directed to a method, computer program product, or a mobile device configured for obtaining a mobility parameter indicative of a mobility of the mobile device. The mobility parameter may be further utilized to configure the operating state of the mobile device. The mobility parameter is obtained using a multi-sense approach, which utilizes both Received Signal Strength Indicator (RSSI) and Frequency Offset (FO) measurements. The mobility parameter is based on statistical parameters relating to the distributions of the RSSI and FO measurements. Various configurations of computer program products, mobile devices and systems are also described.Type: ApplicationFiled: February 1, 2010Publication date: May 19, 2011Applicant: RESEARCH IN MOTION LIMITEDInventors: Mahinthan Veluppillai, Nagula Tharma Sangary, Sean Bartholomew Simmons, Perry Jarmuszewski
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Patent number: 7898428Abstract: A mobile device configured to have at least one function disabled when a speed of the mobile device exceeds a threshold. The mobile device includes an output component configured to provide a notification related to disabling the at least one function. The mobile device also includes a first input component configured to promote controlling whether to disable the at least one function.Type: GrantFiled: March 6, 2008Date of Patent: March 1, 2011Assignee: Research In Motion LimitedInventors: David Blaine Dietz, Nagula Tharma Sangary, Sean Bartholomew Simmons
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Patent number: 7895013Abstract: A mobile device configured to estimate the speed at which it is moving. The mobile device includes a timing component configured to perform a plurality of Doppler shift measurements on a timing signal received by the mobile device. The mobile device also includes a processing component configured to correlate the size of the range of the plurality of Doppler shift measurements to the speed at which the mobile device is moving.Type: GrantFiled: March 18, 2008Date of Patent: February 22, 2011Assignee: Research In Motion LimitedInventors: David Blaine Dietz, Nagula Tharma Sangary, Sean Bartholomew Simmons
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Publication number: 20100291887Abstract: A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block.Type: ApplicationFiled: July 30, 2010Publication date: November 18, 2010Applicant: RESEARCH IN MOTION LIMITEDInventors: Wen-Yen Chan, Nasserullah Khan, Qingzhong Jiao, Xin Jin, Nagula Tharma Sangary, Michael Franz Habicher
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Publication number: 20100222001Abstract: A speed parameter or channel quality parameter are determined in a mobile device based on variation in frequency offset measurement. A higher variation in the frequency offset measurement reflects a poorer channel quality and a higher speed; a lower variation in the frequency offset measurement reflects a better channel quality and a lower speed. The parameter(s) may be fed back to the system and used, for example, to make adaptive modulation and coding decisions.Type: ApplicationFiled: February 27, 2009Publication date: September 2, 2010Applicant: RESEARCH IN MOTION LIMITEDInventors: Nagula Tharma Sangary, Sean Bartholomew Simmons, David Blaine Dietz, Perry Jarmuszewski, Oleksiy Kravets
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Patent number: 7787566Abstract: A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block.Type: GrantFiled: June 5, 2009Date of Patent: August 31, 2010Assignee: Research In Motion LimitedInventors: Wen-Yen M. Chan, Nasserullah Khan, Qingzhong Jiao, Nagula Tharma Sangary, Michael Franz Habicher, Xin Jin