Patents by Inventor Chin-tang Weng
Chin-tang Weng 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: 10520608Abstract: Methods and apparatus are provided for power saving in GNSS receivers. In one novel aspect, the ME tracking period, the ME interval, and the PE working period, the PE interval are dynamically determined based on the GNSS signal conditions and/or the user requirements. In one embodiment, acceptable provision estimated position fix are used. Estimated position result is generated at each GPS position interval if there is no position result generated by the PE working period. In another embodiment, the ME-tracking and/or the PE-working are adjusted to minimum operation needs by using ME-partial (MEP) and/or PE-partial (PEP). PEP is arranged aligned with MEP. In yet another embodiment, the PE working period is delayed such that the PE working period is aligned with the ME tracking period. The position result is generated based on a last epoch's measurement obtained in the previous ME tracking period.Type: GrantFiled: September 4, 2015Date of Patent: December 31, 2019Assignee: MediaTek Inc.Inventors: Chin-Tang Weng, Chih-Wei Chen, Pei-Hung Jau, Cheng-Ming Hu, Bo-Wen Tung, Zong-Hua You
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Patent number: 10185035Abstract: A satellite-based positioning method includes: obtaining predicted satellite data for at least one satellite vehicles (SVs) in a global navigation satellite system (GNSS); obtaining reference satellite data for the at least one SV; calculating satellite prediction error data for each of the at least one SV according to the predicted satellite data and the reference satellite data; and utilizing a processing unit to calculate a parameter for each of the at least one SV based on the satellite prediction error data. An associated satellite-based positioning apparatus is also provided.Type: GrantFiled: December 30, 2014Date of Patent: January 22, 2019Assignee: MediaTek Inc.Inventors: Chia-Yen Chong, Chih-Wei Chen, Chin-Tang Weng, Mu-Han Tsai
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Patent number: 10129701Abstract: A location context managing method applied to an electronic device having at least one sensor, including: receiving positioning information from a plurality of positioning sources; receiving a value from the sensor; choosing a scenario from a scenario table based on the value received from the sensor and the positioning information received from the plurality of positioning sources, and calculating a location of the electronic device according to the scenario, wherein the scenario table lists a plurality of scenarios, each decides which positioning information from the plurality positioning sources to be adopted for the location calculation.Type: GrantFiled: May 4, 2016Date of Patent: November 13, 2018Assignee: MediaTek Inc.Inventors: Chin-Lung Li, Chin-Tang Weng, Feng-Jian Chou
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Publication number: 20170078849Abstract: A location context managing method applied to an electronic device having at least one sensor, including: receiving positioning information from a plurality of positioning sources; receiving a value from the sensor; choosing a scenario from a scenario table based on the value received from the sensor and the positioning information received from the plurality of positioning sources, and calculating a location of the electronic device according to the scenario, wherein the scenario table lists a plurality of scenarios, each decides which positioning information from the plurality positioning sources to be adopted for the location calculation.Type: ApplicationFiled: May 4, 2016Publication date: March 16, 2017Inventors: Chin-Lung Li, Chin-Tang Weng, Feng-Jian Chou
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Publication number: 20160238712Abstract: Methods and apparatus are provided for power saving in GNSS receivers. In one novel aspect, the ME tracking period, the ME interval, and the PE working period, the PE interval are dynamically determined based on the GNSS signal conditions and/or the user requirements. In one embodiment, acceptable provision estimated position fix are used. Estimated position result is generated at each GPS position interval if there is no position result generated by the PE working period. In another embodiment, the ME-tracking and/or the PE-working are adjusted to minimum operation needs by using ME-partial (MEP) and/or PE-partial (PEP). PEP is arranged aligned with MEP. In yet another embodiment, the PE working period is delayed such that the PE working period is aligned with the ME tracking period. The position result is generated based on a last epoch's measurement obtained in the previous ME tracking period.Type: ApplicationFiled: September 4, 2015Publication date: August 18, 2016Inventors: Chin-Tang Weng, Chih-Wei Chen, Pei-Hung Jau, Cheng-Ming Hu, Bo-Wen Tung, Zong-Hua You
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Publication number: 20160187488Abstract: A satellite-based positioning method includes: obtaining predicted satellite data for at least one satellite vehicles (SVs) in a global navigation satellite system (GNSS); obtaining reference satellite data for the at least one SV; calculating satellite prediction error data for each of the at least one SV according to the predicted satellite data and the reference satellite data; and utilizing a processing unit to calculate a parameter for each of the at least one SV based on the satellite prediction error data. An associated satellite-based positioning apparatus is also provided.Type: ApplicationFiled: December 30, 2014Publication date: June 30, 2016Inventors: Chia-Yen Chong, Chih-Wei Chen, Chin-Tang Weng, Mu-Han Tsai
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Patent number: 9007261Abstract: A data model containing orbital parameters is stored in a mobile device. When a First Fix is required by a GNSS system within the mobile device, these stored orbital parameters are used to rapidly generate accurate satellite trajectory data model. The stored orbital parameters may be modified in part or in whole as required by changing coefficients of the stored parameters.Type: GrantFiled: May 5, 2011Date of Patent: April 14, 2015Assignee: Mediatek Inc.Inventors: Chin-Tang Weng, Wei Guan Yau
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Patent number: 8368588Abstract: A method for updating a set of transformation information parameters used in a global navigation satellite system includes: obtaining at least one satellite navigation information for a satellite; and updating the set of transformation information parameters according to the obtained satellite navigation information. The method can extend the life time of the set of transformation information parameters, and used to generate better predictions of the satellite trajectory therefore the TTFF can be reduced while the positioning accuracy can also be improved.Type: GrantFiled: October 29, 2010Date of Patent: February 5, 2013Assignee: Mediatek Inc.Inventors: Chin-Tang Weng, Liang-Chi Huang
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Patent number: 8362950Abstract: A method and device for predicting satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for at least one satellite. The microprocessor is used for determining a satellite trajectory prediction model according to the satellite navigation message, and propagating at least one set of satellite trajectory extension data by using the satellite trajectory prediction model.Type: GrantFiled: July 21, 2011Date of Patent: January 29, 2013Assignee: MEDIATEK Inc.Inventors: Chin-tang Weng, Yeou-jyh Tsai, Ching-Lung Fu
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Patent number: 8120530Abstract: A method and device for using satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for a satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating a plurality of parameters of a satellite trajectory prediction model according to the propagating condition to establish an estimated satellite trajectory predication model, propagating a set of satellite trajectory extension data by using the estimated satellite trajectory prediction model, computing acquisition assistance data according to the satellite trajectory extension data and acquiring signals of the satellite by using the acquisition assistance data.Type: GrantFiled: August 25, 2009Date of Patent: February 21, 2012Assignee: Mediatek Inc.Inventor: Chin-tang Weng
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Publication number: 20110279316Abstract: A method and device for predicting satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for at least one satellite. The microprocessor is used for determining a satellite trajectory prediction model according to the satellite navigation message, and propagating at least one set of satellite trajectory extension data by using the satellite trajectory prediction model.Type: ApplicationFiled: July 21, 2011Publication date: November 17, 2011Applicant: MEDIATEK INC.Inventors: Chin-tang Weng, Yeou-jyh Tsai, Ching-Lung Fu
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Publication number: 20110273329Abstract: A data model is built using satellite ephemeris data collected over an extended period of time, allowing generation on a server of very precise orbital parameters preferably using a force or numerical method. These orbital parameters are stored in a mobile device. When a First Fix is required by a GNSS system within the mobile device, these stored orbital parameters are used to rapidly generate accurate satellite trajectory data model without requiring access to a broadcasted ephemeris or a network connection. The stored orbital parameters may be modified in part or in whole as required by changing coefficients of the stored parameters.Type: ApplicationFiled: May 5, 2011Publication date: November 10, 2011Inventors: Chin-Tang Weng, Wei Guan Yau
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Publication number: 20110273327Abstract: A data model containing orbital parameters is stored in a mobile device. When a First Fix is required by a GNSS system within the mobile device, these stored orbital parameters are used to rapidly generate accurate satellite trajectory data model. The stored orbital parameters may be modified in part or in whole as required by changing coefficients of the stored parameters.Type: ApplicationFiled: May 5, 2011Publication date: November 10, 2011Inventors: Chin-Tang Weng, Wei Guan Yau
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Patent number: 8009093Abstract: A method and device for predicting satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for at least one satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating at least one parameter of a satellite trajectory prediction model according to the propagating condition, and propagating at least one set of satellite trajectory extension data by using the satellite trajectory prediction model.Type: GrantFiled: July 26, 2010Date of Patent: August 30, 2011Assignee: MediaTek Inc.Inventors: Chin-tang Weng, Yeou-jyh Tsai, Ching-Lung Fu
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Publication number: 20110043404Abstract: A method for updating a set of transformation information parameters used in a global navigation satellite system includes: obtaining at least one satellite navigation information for a satellite; and updating the set of transformation information parameters according to the obtained satellite navigation information. The method can extend the life time of the set of transformation information parameters, and used to generate better predictions of the satellite trajectory therefore the TTFF can be reduced while the positioning accuracy can also be improved.Type: ApplicationFiled: October 29, 2010Publication date: February 24, 2011Inventors: Chin-Tang Weng, Liang-Chi Huang
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Publication number: 20100289697Abstract: A method and device for predicting satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for at least one satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating at least one parameter of a satellite trajectory prediction model according to the propagating condition, and propagating at least one set of satellite trajectory extension data by using the satellite trajectory prediction model.Type: ApplicationFiled: July 26, 2010Publication date: November 18, 2010Applicant: MEDIATEK INC.Inventors: Chin-tang Weng, Yeou-jyh Tsai, Ching-Lung Fu
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Patent number: 7786929Abstract: A method and device for predicting satellite trajectory extension data used in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for a satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating a plurality of parameters of a satellite trajectory prediction model according to the propagating condition, and propagating a set of satellite trajectory extension data by using the satellite trajectory prediction model.Type: GrantFiled: April 15, 2008Date of Patent: August 31, 2010Assignee: Mediatek Inc.Inventors: Chin-tang Weng, Yeou-jyh Tsai, Ching-Lung Fu
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Publication number: 20090303122Abstract: A method and device for using satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for a satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating a plurality of parameters of a satellite trajectory prediction model according to the propagating condition to establish an estimated satellite trajectory predication model, propagating a set of satellite trajectory extension data by using the estimated satellite trajectory prediction model, computing acquisition assistance data according to the satellite trajectory extension data and acquiring signals of the satellite by using the acquisition assistance data.Type: ApplicationFiled: August 25, 2009Publication date: December 10, 2009Applicant: MEDIATEK INC.Inventor: Chin-tang Weng
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Publication number: 20090135061Abstract: A method and device for predicting satellite trajectory extension data used in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for a satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating a plurality of parameters of a satellite trajectory prediction model according to the propagating condition, and propagating a set of satellite trajectory extension data by using the satellite trajectory prediction model.Type: ApplicationFiled: April 15, 2008Publication date: May 28, 2009Applicant: MEDIATEK INC.Inventors: Chin-tang Weng, Yeou-jyh Tsai, Ching-Lung Fu