Patents by Inventor Cheng-Yuan Chang
Cheng-Yuan Chang 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: 11367427Abstract: A design method for feedforward active noise control system is disclosed. Based on a target signal and a reference signal, a first adaptive system identifying unit is enabled to complete a first system identification process for producing a first adaptive filter, and then a second adaptive system identifying unit is enabled to complete a second system identification process for producing a second adaptive filter. After the second adaptive filter is converted to a digitally-controlled filter by using a system identification tool, the digitally-controlled filter is implemented into a DSP chip of a feedforward active noise control system. As a result, it is able to find that not only the computing loading of the DSP chip is significantly lowered while an adaptive algorithm executes an active noise control computing, but also the feedforward active noise control system exhibits a broad frequency bandwidth noise cancelling ability.Type: GrantFiled: May 6, 2021Date of Patent: June 21, 2022Assignee: Chung Yuan Christian UniversityInventors: Cheng-Yuan Chang, Sen-Maw Kuo, Chong-Rui Huang
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Patent number: 10786903Abstract: The present disclosure illustrates a map creation system and a method for a movable robot. The map creation system includes a movable robot and a display device. The movable robot includes a robot body; a driving unit driving the robot body to move in a space; an image capturing unit capturing a image in the space; a sampling unit sampling in the space to obtain a sample; a control unit controlling the operation of the driving unit, the image capturing unit and the sampling unit; and a power supply unit supplying an electrical power to each unit. The display device displays the received image and marks a location in the space where the sample is obtained on the image, and synchronously displays a movement trace of the movable robot in the space according to the driving instructions of the driving unit.Type: GrantFiled: February 20, 2018Date of Patent: September 29, 2020Assignee: Institute of Nuclear Energy Research, Atomic Energy Council, Executive YuanInventors: Chung-Hao Huang, Yu-Hsiang Hung, Chiung-Wei Huang, Cheng-Yuan Chang
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Patent number: 10515619Abstract: Disclosures of the present invention describe a portable smart electronic device, which consists of several first reference microphones, a first loudspeaker, a first error microphone, several of second reference microphones, a second loudspeaker, a second error microphone, and a noise controlling module. Both the first error microphone and the second error microphone are set to have a noise detection direction and face to a first region near to a right ear and a second region near to a left ear, respectively. Therefore, the noise detection direction and an audio broadcasting direction of both the first loudspeaker and the second loudspeaker have a same progress direction. By such arrangement, this portable smart electronic device can be operated to adaptively provide an anti-noise audio to the first region and the second region for establishing a quiet zone in both the two regions by attenuating various environment noises.Type: GrantFiled: May 2, 2019Date of Patent: December 24, 2019Assignee: Chung Yuan Christian UniversityInventors: Cheng-Yuan Chang, Sen-Maw Kuo
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Publication number: 20190105773Abstract: The present disclosure illustrates a map creation system and a method for a movable robot. The map creation system includes a movable robot and a display device. The movable robot includes a robot body; a driving unit driving the robot body to move in a space; an image capturing unit capturing a image in the space; a sampling unit sampling in the space to obtain a sample; a control unit controlling the operation of the driving unit, the image capturing unit and the sampling unit; and a power supply unit supplying an electrical power to each unit. The display device displays the received image and marks a location in the space where the sample is obtained on the image, and synchronously displays a movement trace of the movable robot in the space according to the driving instructions of the driving unit.Type: ApplicationFiled: February 20, 2018Publication date: April 11, 2019Inventors: CHUNG-HAO HUANG, YU-HSIANG HUNG, CHIUNG-WEI HUANG, CHENG-YUAN CHANG
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Patent number: 10171907Abstract: The present invention discloses a fan noise controlling system, comprising: at least one cylinder-shaped limiter, a plurality of error sensors, a noise controlling module, and at least one loudspeaker. According to the particular design of the present invention, the cylinder-shaped limiter is connected to a fan device for confining the transmission path of at least one fan noise signal. On the other hand, the error sensors are disposed in the internal of the cylinder-shaped limiter, and the loudspeaker is disposed at an axis position of the fan device. When this fan controlling system normally works, the noise controlling module is able to generate at least one anti-noise signal according to a plurality of error signals collected by the error sensors at consecutive previous time points, and then the loudspeaker is driven to broadcast the anti-noise signal for carrying out an outstanding efficacy on the cancellation of the fan noise.Type: GrantFiled: January 12, 2018Date of Patent: January 1, 2019Assignee: Chung Yuan Christian UniversityInventors: Cheng-Yuan Chang, Sen-Maw Kuo
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Patent number: 10119441Abstract: Differing from conventionally-used exhaust pipe utilizing discontinuous section area(s) and sound-absorbing material(s) to abate the noise produced by an engine, the present invention provides a waste air exhausting device consisting of: a housing, a supporting plate disposed in the housing, a miniature microphone disposed at the end of the housing, and a loudspeaker disposed on the supporting plate. Therefore, according to the noise produced by the engine, a noise controller system coupling to the miniature microphone and the loudspeaker is able to produce an anti-noise signal through the loudspeaker for abating the engine noise. On the other hand, the noise controller system can also produce an anti-noise signal having specific frequencies components according to the frequency of the engine noise and a reference signal, so as to modulate the frequency of the engine noise by broadcasting the anti-noise signal having the specific frequencies components in the housing through the loudspeaker.Type: GrantFiled: August 5, 2016Date of Patent: November 6, 2018Assignee: Chung Yuan Christian UniversityInventors: Cheng-Yuan Chang, Sen-Maw Kuo
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Patent number: 9866932Abstract: The present invention provides an electronic helmet for cancelling noises, which comprises a helmet including a plurality of microphones, a plurality of speakers and a first communication unit; and a mobile device including a second communication unit and a control unit. When the first communication unit in the helmet connects to the second communication unit in the mobile device, the control unit generates a plurality of control signals according to at least one sound or noise detected by the plurality of microphones. The mobile device uses the plurality of control signals to control the plurality of speakers outputting the at least one sound or anti-noise cancelling the noise. By the above electronic helmet, the present invention also provides a method integrating active noise control, hands-free communication, music listening, and voice navigation so as to achieve the proposes of cancelling the noises and improving the riding quality.Type: GrantFiled: February 4, 2016Date of Patent: January 9, 2018Assignee: Chung Yuan Christian UniversityInventors: Cheng-Yuan Chang, Sen-Maw Kuo
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Publication number: 20170268395Abstract: Differing from conventionally-used exhaust pipe utilizing discontinuous section area(s) and sound-absorbing material(s) to abate the noise produced by an engine, the present invention provides a waste air exhausting device consisting of: a housing, a supporting plate disposed in the housing, a miniature microphone disposed at the end of the housing, and a loudspeaker disposed on the supporting plate. Therefore, according to the noise produced by the engine, a noise controller system coupling to the miniature microphone and the loudspeaker is able to produce an anti-noise signal through the loudspeaker for abating the engine noise. On the other hand, the noise controller system can also produce an anti-noise signal having specific frequencies components according to the frequency of the engine noise and a reference signal, so as to modulate the frequency of the engine noise by broadcasting the anti-noise signal having the specific frequencies components in the housing through the loudspeaker.Type: ApplicationFiled: August 5, 2016Publication date: September 21, 2017Inventors: Cheng-Yuan Chang, Sen-Maw Kuo
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Patent number: 9718650Abstract: A control device using image tracking technology for controlling overhead crane system is disclosed, in which a plurality of image capturers are used to monitor a operating space and a position of the hoisted load, a respective image of two of which are used to establish a 3D coordinate data, so that an image processor calculates parameters including a hoisted load position (P), a swing angle (?) and a cable length (l) by referring to the images received, and generates a feedback signal to a crane controller. The crane controller issues a drive signal according to the feedback signal to drive the overhead crane system.Type: GrantFiled: July 16, 2014Date of Patent: August 1, 2017Assignee: INSTITUTE OF NUCLEAR ENERGY RESEARCH, ATOMIC ENERGY COUNCIL, Executive Yuan, R.O.C.Inventors: Lun-Hui Lee, Yen-Nung Lai, Chung-Hao Huang, Cheng-Yuan Chang, Sung-Chih Ku
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Publication number: 20170142507Abstract: The present invention provides an electronic helmet for cancelling noises, which comprises a helmet including a plurality of microphones, a plurality of speakers and a first communication unit; and a mobile device including a second communication unit and a control unit. When the first communication unit in the helmet connects to the second communication unit in the mobile device, the control unit generates a plurality of control signals according to at least one sound or noise detected by the plurality of microphones. The mobile device uses the plurality of control signals to control the plurality of speakers outputting the at least one sound or anti-noise cancelling the noise. By the above electronic helmet, the present invention also provides a method integrating active noise control, hands-free communication, music listening, and voice navigation so as to achieve the proposes of cancelling the noises and improving the riding quality.Type: ApplicationFiled: February 4, 2016Publication date: May 18, 2017Inventors: CHENG-YUAN CHANG, SEN-MAW KUO
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Publication number: 20170071369Abstract: An electronic pillow pad of snore and noise cancellation includes: a pillow pad having a plurality of microphones, a plurality of speakers, and a first communication unit, and a mobile device having a second communication unit and a control unit. When the first communication unit of the pillow pad is connected with the second communication unit of the mobile device, the control unit of the mobile device generates a plurality of control signals in the light of the audio signal or the noise signal detected by the microphones of the pillow pad, and the speakers of the pillow pad are controlled by the mobile device with the control signals to output the audio signal or the anti-noise signal that cancels out the noise signal.Type: ApplicationFiled: November 30, 2015Publication date: March 16, 2017Inventors: Cheng-Yuan CHANG, Sen-Maw KUO
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Patent number: 9278832Abstract: A method of reducing computational demand for image tracking includes first receiving a plurality of images of a load hoisted with hanging wire in a preset transitional space, setting at least one monitoring point each at the load and the hanging wire, respectively, providing a tracking frame at the outer periphery of each monitoring point, allowing each tracking frame to track on its corresponding monitoring point that each monitoring point is kept on a relative location within each corresponding tracking frame, and producing the same displacement as that of the monitoring point, and lastly computing the displacement of each tracking frame thus obtaining the displacement of each monitoring point in correspondence to the tracking frame to calculate various displacement of the hanging wire and the load, respectively. With this image tracking method, the processing quantity of whole image data is effectively decreased and computational demand of equipments is reduced.Type: GrantFiled: November 26, 2013Date of Patent: March 8, 2016Assignee: INSTITUTE OF NECLEAR ENERGY RESEARCHInventors: Lun-Hui Lee, Yen-Nung Lai, Chung-Hao Huang, Cheng-Yuan Chang, Sung-Chih Ku
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Publication number: 20160016763Abstract: A control device using image tracking technology for controlling overhead crane system is disclosed, in which a plurality of image capturers are used to monitor a operating space and a position of the hoisted load, a respective image of two of which are used to establish a 3D coordinate data, so that an image processor calculates parameters including a hoisted load position (P), a swing angle (?) and a cable length (I) by referring to the images received, and generates a feedback signal to a crane controller. The crane controller issues a drive signal according to the feedback signal to drive the overhead crane system.Type: ApplicationFiled: July 16, 2014Publication date: January 21, 2016Inventors: Lun-Hui Lee, Yen-Nung Lai, Chung-Hao Huang, Cheng-Yuan Chang, Sung-Chih Ku
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Publication number: 20150146916Abstract: A method of reducing computational demand for image tracking includes first receiving a plurality of images of a load hoisted with hanging wire in a preset transitional space, setting at least one monitoring point each at the load and the hanging wire, respectively, providing a tracking frame at the outer periphery of each monitoring point, allowing each tracking frame to track on its corresponding monitoring point that each monitoring point is kept on a relative location within each corresponding tracking frame, and producing the same displacement as that of the monitoring point, and lastly computing the displacement of each tracking frame thus obtaining the displacement of each monitoring point in correspondence to the tracking frame to calculate various displacement of the hanging wire and the load, respectively. With this image tracking method, the processing quantity of whole image data is effectively decreased and computational demand of equipments is reduced.Type: ApplicationFiled: November 26, 2013Publication date: May 28, 2015Inventors: Lun-Hui Lee, Yen-Nung Lai, Chung-Hao Huang, Cheng-Yuan Chang, Sung-Chih Ku
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Patent number: 8379879Abstract: An active noise reduction system is provided for receiving an audio input signal and a noise interference signal and calculating an audio broadcasting signal according to a Feedback Filtered-X Least-Mean-Square (FFXLMS) algorithm, wherein the FFXLMS algorithm optimizes a (convergence factor) ? so as to decrease the numbers of divisions operated by the active noise reduction system and increase the operation speed of the active noise reduction system.Type: GrantFiled: May 21, 2010Date of Patent: February 19, 2013Assignee: Chung Yuan Christian UniversityInventors: Cheng-Yuan Chang, Sheng-Ting Li
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Publication number: 20110208420Abstract: The present invention is a combination of GPS (Global Position System) and GSM (Global System for Mobile Communication) navigation system. By using the data of GPS and SMS (Short Message Service), the present invention can display navigation directions and relative positions and send short message with positions. Therefore, a navigation system with active navigation guiding and help seeking is provided.Type: ApplicationFiled: December 23, 2010Publication date: August 25, 2011Inventors: Cheng-Yuan Chang, Yu-Feng Lin, Tai-Yu Tsou
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Publication number: 20110194708Abstract: An active noise reduction system is provided for receiving an audio input signal and a noise interference signal and calculating an audio broadcasting signal according to a Feedback Filtered-X Least-Mean-Square (FFXLMS) algorithm, wherein the FFXLMS algorithm optimizes a (convergence factor) ? so as to decrease the numbers of divisions operated by the active noise reduction system and increase the operation speed of the active noise reduction system.Type: ApplicationFiled: May 21, 2010Publication date: August 11, 2011Applicant: CHUNG YUAN CHRISTIAN UNIVERSITYInventors: CHENG-YUAN CHANG, SHENG-TING LI
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Patent number: 7388592Abstract: In a gamma voltage generator and gamma voltage generating method that can tune the gamma voltages individually, several gamma currents of a same magnitude are generated for each to flow through a variable resistive element to generate a variable common voltage and several variable voltages, from which a common gamma voltage and several first gamma voltages are generated. By use of the symmetric property of the gamma curve corresponding to those gamma voltages to be generated, several voltages are generated by mapping the first gamma voltages with the common gamma voltage as the center axis, and from which several second gamma voltages are derived. The common gamma voltage and the first and second gamma voltages are provided for those gamma voltages corresponding to the gamma curve.Type: GrantFiled: January 28, 2004Date of Patent: June 17, 2008Assignee: Richtek Technology Corp.Inventors: Chao-Hsuan Chuang, Jing-Meng Liu, Shin-Lung Ho, Wen-Hung Huang, Cheng-Yuan Chang
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Patent number: 7079592Abstract: The present invention relates to both of a bi-stage correlation calculation demodulation system, and a fast walsh block demodulation device at a receiver, wherein the bi-stage correlation calculation demodulation system has a characteristic of bi-stage correlation calculation in which the subsequent second-stage correlation calculations are dependent on the first-stage correlation calculation results by utilizing an incomplete orthogonal property within CCK codewords to arrange the CCK codewords operated in the first-stage correlation calculations and second-stage correlation calculations properly and respectively.Type: GrantFiled: June 14, 2002Date of Patent: July 18, 2006Assignee: Accton Technology CorporationInventors: Cheng-Yuan Chang, Jie-Hau Huang, Hong-Chin Lin, Guu-Chang Yang, Yung-Hsien Chang, Hsuan-Ching Chao
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Publication number: 20040233182Abstract: In a gamma voltage generator and gamma voltage generating method that can tune the gamma voltages individually, several gamma currents of a same magnitude are generated for each to flow through a variable resistive element to generate a variable common voltage and several variable voltages, from which a common gamma voltage and several first gamma voltages are generated. By use of the symmetric property of the gamma curve corresponding to those gamma voltages to be generated, several voltages are generated by mapping the first gamma voltages with the common gamma voltage as the center axis, and from which several second gamma voltages are derived. The common gamma voltage and the first and second gamma voltages are provided for those gamma voltages corresponding to the gamma curve.Type: ApplicationFiled: January 28, 2004Publication date: November 25, 2004Inventors: Chao-Hsuan Chuang, Jing-Meng Liu, Shin-Lung Ho, Wen-Hung Huang, Cheng-Yuan Chang