Patents by Inventor Jeng-Da Li
Jeng-Da Li 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: 20230070639Abstract: A detection system and a detection method are provided. The detection method includes configuring a processing circuit to perform an initialization phase, which includes: executing a detection process to respectively accumulate numbers of times that objects are detected to be present in sub-areas, so as to generate initial count values; and configuring the processing circuit to perform a normal operation phase, which includes: executing the detection process to respectively accumulate numbers of times that the objects are detected to be present in the sub-areas, so as to generate current count values corresponding to the sub-areas; and comparing the current count value with the initial count value in a current sub-area of the sub-areas. In response to the current count value being greater than the initial count value plus a first count threshold, a new stationary object is determined to be present in the current sub-area.Type: ApplicationFiled: March 10, 2022Publication date: March 9, 2023Inventors: MODICK BAHADUR BASNET, CHI-CHENG KUO, JENG-DA LI
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Publication number: 20220413131Abstract: An object detection system and an object detection method are provided. The object detection system includes a transmitter, a receiver, and a processing circuit. The processing circuit is configured to: control the transmitter to transmit by a predetermined field pattern multiple detection signals in different time frames along a main beam direction; control the receiver to receive multiple reflection signals; correspondingly calculate multiple received powers, distances and velocities; perform a clustering process on the distances and the velocities to find the received powers, the distances and the velocities corresponding to a main target; perform an association process to track the distances and the received powers of the main target in the different time frames; and calculate a power and a distance trend of the main target, and determine whether an early alarm event is to occur according to a relationship between the power and the distance trend.Type: ApplicationFiled: June 16, 2022Publication date: December 29, 2022Inventors: MODICK BAHADUR BASNET, CHI-CHENG KUO, JENG-DA LI
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Patent number: 10663574Abstract: An angle estimating method applied in a radar system. The radar system includes a first antenna array including M antennas. The angle estimating method includes steps of obtaining a plurality of beamforming weighting vectors; receiving signal from M antennas and forming a received vector; performing an augment operation on the received vector and obtaining an augmented received vector; computing correlation between the augmented received vector and the plurality of beamforming weighting vectors and obtaining a plurality of results accordingly; and determining an angle-of-arrival of an object according to the plurality of results.Type: GrantFiled: March 12, 2018Date of Patent: May 26, 2020Assignee: Wistron NeWeb CorporationInventors: Chi-Cheng Kuo, Hsin-Lung Hsiao, Chi-Yung Liao, Jeng-Da Li
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Patent number: 10481250Abstract: A radar antenna system comprises a plurality of transmitting sub-arrays; a plurality of receiving sub-arrays; and a transceiving control unit coupled to the plurality of transmitting sub-arrays and the plurality of receiving sub-arrays, configured to control the plurality of transmitting sub-arrays and the plurality of receiving sub-arrays, such that the radar antenna system selectively operates in one of an amplitude-comparison mono-pulse mode and a phase-comparison mono-pulse mode.Type: GrantFiled: June 2, 2016Date of Patent: November 19, 2019Assignee: Wistron NeWeb CorporationInventors: Guo-Shu Huang, Jeng-Da Li, Hsin-Lung Hsiao
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Patent number: 10267906Abstract: An angle estimating method applied in a radar system includes receiving a first signal and a second signal reflected from a target object via a first antenna and a second antenna; obtaining a first phase difference and at least one virtual phase difference, where the first phase difference is a phase difference between the first antenna and the second antenna; and obtaining a direction of arrival (DOA) of the target object according to the first phase difference and the at least one virtual phase difference.Type: GrantFiled: August 29, 2016Date of Patent: April 23, 2019Assignee: Wistron NeWeb CorporationInventors: Chi-Cheng Kuo, Hsin-Lung Hsiao, Jeng-Da Li
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Patent number: 10270166Abstract: A radar and a method for enabling array antenna are proposed. The radar includes a transceiver, a multi-input multi-output (MIMO) array antenna, a phased array antenna, and a controller. The MIMO array antenna is coupled to the transceiver and includes first transmitting sub-arrays and receiving sub-arrays. The phased array antenna is coupled to the transceiver and includes second transmitting sub-arrays and the receiving sub-arrays. The controller is coupled to the transceiver and configured to to enable the first transmitting sub-arrays to form the MIMO array antenna or enable the second transmitting sub-arrays to form the phased array antenna.Type: GrantFiled: April 19, 2016Date of Patent: April 23, 2019Assignee: Wistron NeWeb Corp.Inventors: Guo-Shu Huang, Jeng-Da Li, Hsin-Lung Hsiao
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Publication number: 20190064339Abstract: An angle estimating method applied in a radar system. The radar system includes a first antenna array including M antennas. The angle estimating method includes steps of obtaining a plurality of beamforming weighting vectors; receiving signal from M antennas and forming a received vector; performing an augment operation on the received vector and obtaining an augmented received vector; computing correlation between the augmented received vector and the plurality of beamforming weighting vectors and obtaining a plurality of results accordingly; and determining an angle-of-arrival of an object according to the plurality of results.Type: ApplicationFiled: March 12, 2018Publication date: February 28, 2019Inventors: Chi-Cheng Kuo, Hsin-Lung Hsiao, Chi-Yung Liao, Jeng-Da Li
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Patent number: 10162052Abstract: A pre-warning method utilized in a vehicle radar system includes a first and a second millimeter-wave detection modules detecting dynamic information of a plurality of first targets and a plurality of second targets corresponding to the vehicle radar system in different dimensions of an area and obtaining a first and a second detection results, determining whether there are identical targets within the plurality of first targets and the plurality of second targets according to the first and the second detection results, determining 3-D dynamic information of at least an identical target after determining that the plurality of first targets and the plurality of second targets include the at least an identical target, and determining whether to trigger an alarm signal according to the 3-D dynamic information of the at least an identical target.Type: GrantFiled: April 30, 2015Date of Patent: December 25, 2018Assignee: Wistron NeWeb CorporationInventors: Jeng-Da Li, Hsin-Lung Hsiao, Chi-Cheng Kuo
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Patent number: 9784831Abstract: A pre-warning method utilized in a vehicle radar system is disclosed. The vehicle radar system includes a frequency-modulation continuous wave (FMCW) module, a data transceiver module and an antenna module, and the FMCW module and the data transceiver module share the antenna module. The pre-warning method includes the FMCW module utilizing the antenna to transmit and receive beat signals to detect dynamic information of a target corresponding to the vehicle radar system and obtain a first detection result, and receiving and broadcasting data to broadcast the first detection result via the data transceiver module and the antenna module, or receive a detection result broadcasted by another vehicle radar system and combine the detection result with the first detection result to perform real-time target tracking and alarm.Type: GrantFiled: April 29, 2015Date of Patent: October 10, 2017Assignee: Wistron NeWeb CorporationInventors: Chi-Cheng Kuo, Hsin-Lung Hsiao, Jeng-Da Li
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Publication number: 20170285159Abstract: An angle estimating method applied in a radar system includes receiving a first signal and a second signal reflected from a target object via a first antenna and a second antenna; obtaining a first phase difference and at least one virtual phase difference, where the first phase difference is a phase difference between the first antenna and the second antenna; and obtaining a direction of arrival (DOA) of the target object according to the first phase difference and the at least one virtual phase difference.Type: ApplicationFiled: August 29, 2016Publication date: October 5, 2017Inventors: Chi-Cheng Kuo, Hsin-Lung Hsiao, Jeng-Da Li
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Patent number: 9778355Abstract: A signal processing method for a frequency-modulated continuous waveform (FMCW) radar system includes receiving a plurality of feedback signals from a plurality of targets and performing analog to digital conversion on the plurality of feedback signals to obtain a digital receiving signal corresponding to the plurality of feedback signals, performing a window function on the digital receiving signal to obtain a window transformation signal corresponding to the digital receiving signal, performing time-domain to frequency-domain conversion on the window transformation signal to obtain a spectrum signal of the window transformation signal, performing two beat frequency detections on the spectrum signal, and determining distances and speeds of the plurality of targets in comparison to the FMCW radar system according to results of the two beat frequency detections.Type: GrantFiled: February 4, 2015Date of Patent: October 3, 2017Assignee: Wistron NeWeb CorporationInventors: Jeng-Da Li, Chi-Cheng Kuo, Cheng-Hsiung Hsu, Chi-Yung Liao, Chien-Chung Tseng
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Publication number: 20170149133Abstract: A radar antenna system comprises a plurality of transmitting sub-arrays; a plurality of receiving sub-arrays; and a transceiving control unit coupled to the plurality of transmitting sub-arrays and the plurality of receiving sub-arrays, configured to control the plurality of transmitting sub-arrays and the plurality of receiving sub-arrays, such that the radar antenna system selectively operates in one of an amplitude-comparison mono-pulse mode and a phase-comparison mono-pulse mode.Type: ApplicationFiled: June 2, 2016Publication date: May 25, 2017Inventors: Guo-Shu Huang, Jeng-Da Li, Hsin-Lung Hsiao
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Publication number: 20160365631Abstract: A radar and a method for enabling array antenna are proposed. The radar includes a transceiver, a multi-input multi-output (MIMO) array antenna, a phased array antenna, and a controller. The MIMO array antenna is coupled to the transceiver and includes first transmitting sub-arrays and receiving sub-arrays. The phased array antenna is coupled to the transceiver and includes second transmitting sub-arrays and the receiving sub-arrays. The controller is coupled to the transceiver and configured to to enable the first transmitting sub-arrays to form the MIMO array antenna or enable the second transmitting sub-arrays to form the phased array antenna.Type: ApplicationFiled: April 19, 2016Publication date: December 15, 2016Inventors: Guo-Shu Huang, Jeng-Da Li, Hsin-Lung Hsiao
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Patent number: 9395435Abstract: A signal generating method for a radar system includes generating a first chirp signal and a second chirp signal having a first time delay relative to the first chirp signal; and combining the first chirp signal and the second chirp signal to determine a frequency modulated signal, wherein the first chirp signal and the second chirp signal are N-step linear stepped frequency modulated continuous waves having the same frequency modulation bandwidth, such that the frequency modulated signal includes i steps of the first chirp signal in a first duration, an interleaved combination of N?i steps of the first chirp signal and N?i steps of the second chirp signal in a second duration, and i steps of the second chirp signal in a third duration.Type: GrantFiled: August 23, 2013Date of Patent: July 19, 2016Assignee: Wistron NeWeb CorporationInventors: Chi-Cheng Kuo, Jeng-Da Li
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Publication number: 20160054441Abstract: A pre-warning method utilized in a vehicle radar system is disclosed. The vehicle radar system includes a frequency-modulation continuous wave (FMCW) module, a data transceiver module and an antenna module, and the FMCW module and the data transceiver module share the antenna module. The pre-warning method includes the FMCW module utilizing the antenna to transmit and receive beat signals to detect dynamic information of a target corresponding to the vehicle radar system and obtain a first detection result, and receiving and broadcasting data to broadcast the first detection result via the data transceiver module and the antenna module, or receive a detection result broadcasted by another vehicle radar system and combine the detection result with the first detection result to perform real-time target tracking and alarm.Type: ApplicationFiled: April 29, 2015Publication date: February 25, 2016Inventors: Chi-Cheng Kuo, Hsin-Lung Hsiao, Jeng-Da Li
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Publication number: 20160054442Abstract: A pre-warning method utilized in a vehicle radar system includes a first and a second millimeter-wave detection modules detecting dynamic information of a plurality of first targets and a plurality of second targets corresponding to the vehicle radar system in different dimensions of an area and obtaining a first and a second detection results, determining whether there are identical targets within the plurality of first targets and the plurality of second targets according to the first and the second detection results, determining 3-D dynamic information of at least an identical target after determining that the plurality of first targets and the plurality of second targets include the at least an identical target, and determining whether to trigger an alarm signal according to the 3-D dynamic information of the at least an identical target.Type: ApplicationFiled: April 30, 2015Publication date: February 25, 2016Inventors: Jeng-Da Li, Hsin-Lung Hsiao, Chi-Cheng Kuo
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Publication number: 20150276929Abstract: A signal processing method for a frequency-modulated continuous waveform (FMCW) radar system includes receiving a plurality of feedback signals from a plurality of targets and performing analog to digital conversion on the plurality of feedback signals to obtain a digital receiving signal corresponding to the plurality of feedback signals, performing a window function on the digital receiving signal to obtain a window transformation signal corresponding to the digital receiving signal, performing time-domain to frequency-domain conversion on the window transformation signal to obtain a spectrum signal of the window transformation signal, performing two beat frequency detections on the spectrum signal, and determining distances and speeds of the plurality of targets in comparison to the FMCW radar system according to results of the two beat frequency detections.Type: ApplicationFiled: February 4, 2015Publication date: October 1, 2015Inventors: Jeng-Da Li, Chi-Cheng Kuo, Cheng-Hsiung Hsu, Chi-Yung Liao, Chien-Chung Tseng
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Publication number: 20140354470Abstract: A signal generating method for a radar system includes generating a first chirp signal and a second chirp signal having a first time delay relative to the first chirp signal; and combining the first chirp signal and the second chirp signal to determine a frequency modulated signal, wherein the first chirp signal and the second chirp signal are N-step linear stepped frequency modulated continuous waves having the same frequency modulation bandwidth, such that the frequency modulated signal includes i steps of the first chirp signal in a first duration, an interleaved combination of N?i steps of the first chirp signal and N?i steps of the second chirp signal in a second duration, and i steps of the second chirp signal in a third duration.Type: ApplicationFiled: August 23, 2013Publication date: December 4, 2014Applicant: Wistron NeWeb CorporationInventors: Chi-Cheng Kuo, Jeng-Da Li