Patents by Inventor Chung-Wei Cheng
Chung-Wei Cheng 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: 20220171024Abstract: A method for identifying human postures includes obtaining millimeter-wave radar backscattered signal including point cloud information in a millimeter-wave radar detection range; determining whether a human exists in the detection range according to the millimeter-wave radar backscattered signal; determining a human centroid according to the point cloud information; removing noise of the point cloud information according to the human centroid; and identifying a human posture according to the point cloud information after noise removal. An apparatus and a non-transitory computer readable medium for identifying human postures are also disclosed.Type: ApplicationFiled: November 30, 2021Publication date: June 2, 2022Inventors: CHIA-JUNG HU, CHUNG-WEI CHENG
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Patent number: 10782536Abstract: A laser device for additive manufacturing and an operation method thereof are provided. The laser device has a laser generation unit, a spectroscopic unit, a control unit, and a lens assembly unit. A laser beam is split into two or more beams by disposing the spectroscopic unit and the lens assembly unit. Thus, a roughness of a process surface and a process time can be reduced.Type: GrantFiled: May 24, 2018Date of Patent: September 22, 2020Assignee: TONGTAI MACHINE & TOOL CO., LTDInventors: Chung-wei Cheng, Chun-yu Tsai, Chih-hsiang Yang, Hsin-pao Chen, Jui-hsiung Yen
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Publication number: 20190310483Abstract: A laser device for additive manufacturing and an operation method thereof are provided. The laser device has a laser generation unit, a spectroscopic unit, a control unit, and a lens assembly unit. A laser beam is split into two or more beams by disposing the spectroscopic unit and the lens assembly unit. Thus, a roughness of a process surface and a process time can be reduced.Type: ApplicationFiled: May 24, 2018Publication date: October 10, 2019Inventors: Chung-wei CHENG, Chun-yu TSAI, Chih-hsiang YANG, Hsin-pao CHEN, Jui-hsiung YEN
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Patent number: 9457517Abstract: A powder shaping method comprises: providing a powder on a target surface; providing a laser beam to illuminate the powder so as to form a pre-treated powder; and providing an energy beam to illuminate the pre-treated powder for enabling a shaping process. In addition, a powder shaping apparatus comprises a base, a target surface, a powder supply unit and an energy beam source system. The target surface is disposed on the base and can be fixed or moved on the base. The powder supply unit provides a powder on the target surface. The energy beam source system has a laser source and an energy source, the laser source provides a laser beam to illuminate the powder to form a pre-treated powder, and the energy source provides an energy beam to further illuminate the pre-treated powder to make a shaping process.Type: GrantFiled: December 20, 2013Date of Patent: October 4, 2016Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chung-Wei Cheng, Kuang-Po Chang, Cen-Ying Lin, Shu-Yi Wang
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Publication number: 20150130118Abstract: A powder shaping method comprises: providing a powder on a target surface; providing a laser beam to illuminate the powder so as to form a pre-treated powder; and providing an energy beam to illuminate the pre-treated powder for enabling a shaping process. In addition, a powder shaping apparatus comprises a base, a target surface, a powder supply unit and an energy beam source system. The target surface is disposed on the base and can be fixed or moved on the base. The powder supply unit provides a powder on the target surface. The energy beam source system has a laser source and an energy source, the laser source provides a laser beam to illuminate the powder to form a pre-treated powder, and the energy source provides an energy beam to further illuminate the pre-treated powder to make a shaping process.Type: ApplicationFiled: December 20, 2013Publication date: May 14, 2015Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: CHUNG-WEI CHENG, KUANG-PO CHANG, CEN-YING LIN, SHU-YI WANG
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Patent number: 8928853Abstract: The present invention provides a method and system for repairing flat panel display, which repairing hot pixels of the flat panel display by femtosecond laser. The flat panel display comprises a LCD module and a color filter disposed on the top of the LCD module, wherein the surface of the color filter corresponding to the LCD module further has a color photoresist layer. The femtosecond laser is projected onto the color photoresist layer corresponding to the hot pixels such that a phenomenon of nonlinear multiple photons absorption can be occurred to change property of the color photoresist layer so as to transform the hot pixels into dead pixels.Type: GrantFiled: February 22, 2011Date of Patent: January 6, 2015Assignee: Industrial Technology Research InstituteInventors: Cen-Ying Lin, Wei-Chih Shen, Chung-Wei Cheng, Chih-Wei Chien
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Publication number: 20140280721Abstract: A computing device establishes communication between a first electronic device and a second electronic device for transmitting data. The computing device receives first register information from the first electronic device and second register information from the second electronic device and saves the first and second register information into a route list. The computing device sends the second register information in the route list to the first electronic device when receiving commands from the first electronic device, so that the first electronic device directly transfers data to the second electronic device according to the second register information.Type: ApplicationFiled: February 27, 2014Publication date: September 18, 2014Applicant: CHIUN MAI COMMUNICATION SYSTEMS, INC.Inventors: CHIA-JUNG HU, KAI-HSI YANG, CHUNG-WEI CHENG, TAI-CHUAN CHEN
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Patent number: 8685168Abstract: The present invention provides a method for removing micro-debris generated in a laser machining process operated on machined object and device of the same. The machined object is placed on a movable machining platform within a machining range and machined at a particular machining location. By disposing an acoustic wave generator and a reflector part, or by disposing a plurality of acoustic wave generators, at least two standing waves extending across the machining range and two standing wave nodes are generated. The micro-debris generated from the laser machining process is moved away by the standing waves to concentrate at the standing wave nodes, and subsequently removed from the standing wave nodes.Type: GrantFiled: March 15, 2012Date of Patent: April 1, 2014Assignee: Industrial Technology Research InstituteInventors: Wu-Jung Tsai, Chung-Wei Cheng, Mi-Ching Tsai, Wu-Sung Yao, Sheng-He Wang
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Publication number: 20130138103Abstract: An electrosurgical unit having micro/nano structure formed thereon and the manufacturing method thereof are disclosed, in which the electrosurgical unit is formed by the irradiation of a laser beam upon a blade so as to have a hybrid of micro/nano elements formed on the surface of the blade. The application of the hybrid of micro/nano elements on the surface of the blade has proven to be a valuable asset not only in providing a non-stick surface and a good heat dissipation ability to the blade, but also in providing a electrosurgical blade that will not release any toxic material under high temperature.Type: ApplicationFiled: December 27, 2011Publication date: May 30, 2013Applicants: Taipei Medical University, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chung-Wei CHENG, Cen-Ying LIN, Weng-Peng TSENG, Keng-Liang OU, Pei-Wen PENG
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Patent number: 8259919Abstract: A communication device having an answering system sets task names, task schedule times of one or more tasks, predetermined ring settings when an incoming call is received during one of the task schedule times, and setting predetermined recorded message. The answering system is configured for determining if the incoming call is received during one of the task schedule times, ringing using the predetermined ring setting if the incoming call is received during one of the task schedule times, replying to the incoming call with the predetermined recorded message if the incoming call is received during one of the task schedule times and if the incoming call has not been answered.Type: GrantFiled: December 25, 2008Date of Patent: September 4, 2012Assignee: Chi Mei Communication Systems, Inc.Inventor: Chung-Wei Cheng
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Patent number: 8233195Abstract: A method for reducing image noise is provided. The procedure of the method is provided in the following steps. First, the color level scale of a scanned image of a document is reduced by a plurality of bits in order to subtract a noise level from the scanned image. Then the color level scales of all pixels of the image are recombined by a halftone pattern method in order to recover the color level scales. Finally the missing codes of the image are filled out by bit enhance method. Because of the color level scales of the proceeding image are not reduced, the scanned image quality does not be blurred by the method. Because the method does not minimize the color level of the proceeding image, the image noise can be reduced without blurring the scanned image and the quality of the image can be increased after the process thereof. And because each color level of the pixel in the image is subtracted by a noise level, some of the bits are removed and the capacity of the image file is decreased.Type: GrantFiled: October 27, 2003Date of Patent: July 31, 2012Assignee: Transpacific Systems, LLCInventors: Yin-Chun Huang, Chung-Wei Cheng
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Publication number: 20120167915Abstract: The present invention provides a method for removing micro-debris generated in a laser machining process operated on machined object and device of the same. The machined object is placed on a movable machining platform within a machining range and machined at a particular machining location. By disposing an acoustic wave generator and a reflector part, or by disposing a plurality of acoustic wave generators, at least two standing waves extending across the machining range and two standing wave nodes are generated. The micro-debris generated from the laser machining process is moved away by the standing waves to concentrate at the standing wave nodes, and subsequently removed from the standing wave nodes.Type: ApplicationFiled: March 15, 2012Publication date: July 5, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wu-Jung TSAI, Chung-Wei Cheng, Mi-Ching Tsai, Wu-Sung Yao, Sheng-He Wang
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Publication number: 20120002155Abstract: The present invention provides a method and system for repairing flat panel display, which repairing hot pixels of the flat panel display by femtosecond laser. The flat panel display comprises a LCD module and a color filter disposed on the top of the LCD module, wherein the surface of the color filter corresponding to the LCD module further has a color photoresist layer. The femtosecond laser is projected onto the color photoresist layer corresponding to the hot pixels such that a phenomenon of nonlinear multiple photons absorption can be occurred to change property of the color photoresist layer so as to transform the hot pixels into dead pixels.Type: ApplicationFiled: February 22, 2011Publication date: January 5, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: CEN-YING LIN, WEI-CHIH SHEN, CHUNG-WEI CHENG, CHIH-WEI CHIEN
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Patent number: 7994029Abstract: A method for patterning crystalline indium tin oxide (ITO) using femtosecond laser is disclosed, which comprises steps of: (a) providing a substrate with an amorphous ITO layer thereon; (b) transferring the amorphous ITO layer in a predetermined area into a crystalline ITO layer by emitting a femtosecond laser beam to the amorphous ITO layer in the predetermined area; and (c) removing the amorphous ITO layer on the substrate using an etching solution.Type: GrantFiled: January 22, 2009Date of Patent: August 9, 2011Assignees: Industrial Technology Research Institute, The Regents of the University of CaliforniaInventors: Chung-Wei Cheng, Costas P. Grigoropoulos, David Jen Hwang, Moosung Kim
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Publication number: 20110108525Abstract: The present invention provides a method and system for manufacturing a microstructure in a photosensitive glass substrate, which include the steps of generating first femtosecond laser pulses by a femtosecond laser source and focusing the first femtosecond laser pulses on a surface or an interior of the photosensitive glass substrate by a focus lens to define a modified region; generating second femtosecond laser pulses by the femtosecond laser source, adjusting a frequency of the second femtosecond laser pulses to be higher than that of the first femtosecond laser pulses by a frequency adjustment unit and an energy adjustment unit; focusing the adjusted second femtosecond laser pulses on the modified region of the photosensitive glass substrate to crystallize a substance of the modified region; and, after crystallization, etching off the crystallized region to obtain the microstructure in the photosensitive glass substrate.Type: ApplicationFiled: April 28, 2010Publication date: May 12, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chih-Wei CHIEN, Chung-Wei Cheng, Ping-Xiang Li, Jeng-Shyong Chen
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Patent number: 7879712Abstract: A method for patterning polycrystalline indium tin oxide by using a Gaussian laser beam focused on an amorphous indium tin oxide layer is disclosed to pattern the non-crystalline amorphous indium tin oxide layer and transfer part of the amorphous indium tin oxide layer into polycrystalline indium tin oxide while the remaining amorphous indium tin oxide layer is etched due to etching selectivity of an etching solution. The method comprises: providing a substrate with an amorphous indium tin oxide layer thereon on a carrier; transferring the amorphous indium tin oxide layer in a predetermined area into a polycrystalline indium tin oxide layer by emitting a Gaussian laser beam focused on the amorphous indium tin oxide layer in the predetermined area; and removing the remaining amorphous indium tin oxide layer on the substrate by an etching solution to form a patterned polycrystalline indium tin oxide layer.Type: GrantFiled: February 16, 2009Date of Patent: February 1, 2011Assignee: Industrial Technology Research InstituteInventors: Chung-Wei Cheng, Hwei-Shen Chen, Jenq-Shyong Chen
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Patent number: 7746516Abstract: An image scanning method includes pre-scanning a first document to generate a first original image according to the first document; adjusting parameter settings of the first original image to generate and store a plurality of pre-view images corresponding to different sets of parameters; pre-scanning a second document to generate a second original image according to the second document; and scanning the second document to generate a plurality of scanning images according to the different sets of parameters of the pre-view images. The parameter settings of the first original image include brightness, shadow, and contrast settings.Type: GrantFiled: August 29, 2006Date of Patent: June 29, 2010Inventors: Chung-Wei Cheng, Stone Cheng
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Publication number: 20100105196Abstract: A method for patterning polycrystalline indium tin oxide by using a Gaussian laser beam focused on an amorphous indium tin oxide layer is disclosed to pattern the non-crystalline amorphous indium tin oxide layer and transfer part of the amorphous indium tin oxide layer into polycrystalline indium tin oxide while the remaining amorphous indium tin oxide layer is etched due to etching selectivity of an etching solution. The method comprises: providing a substrate with an amorphous indium tin oxide layer thereon on a carrier; transferring the amorphous indium tin oxide layer in a predetermined area into a polycrystalline indium tin oxide layer by emitting a Gaussian laser beam focused on the amorphous indium tin oxide layer in the predetermined area; and removing the remaining amorphous indium tin oxide layer on the substrate by an etching solution to form a patterned polycrystalline indium tin oxide layer.Type: ApplicationFiled: February 16, 2009Publication date: April 29, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chung-Wei Cheng, Hwei-Shen Chen, Jenq-Shyong Chen
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Publication number: 20090316874Abstract: A communication device having an answering system sets task names, task schedule times of one or more tasks, predetermined ring settings when an incoming call is received during one of the task schedule times, and setting predetermined recorded message. The answering system is configured for determining if the incoming call is received during one of the task schedule times, ringing using the predetermined ring setting if the incoming call is received during one of the task schedule times, replying to the incoming call with the predetermined recorded message if the incoming call is received during one of the task schedule times and if the incoming call has not been answered.Type: ApplicationFiled: December 25, 2008Publication date: December 24, 2009Applicant: CHI MEI COMMUNICATION SYSTEMS, INC.Inventor: CHUNG-WEI CHENG
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Publication number: 20090303840Abstract: The present invention provides a method for removing micro-debris generated in a laser machining process operated on machined object and device of the same. The machined object is placed on a movable machining platform within a machining range and machined at a particular machining location. By disposing an acoustic wave generator and a reflector part, or by disposing a plurality of acoustic wave generators, at least two standing waves extending across the machining range and two standing wave nodes are generated. The micro-debris generated from the laser machining process is moved away by the standing waves to concentrate at the standing wave nodes, and subsequently removed from the standing wave nodes.Type: ApplicationFiled: November 26, 2008Publication date: December 10, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wu-Jung Tsai, Chung-Wei Cheng, Mi-Ching Tsai, Wu-Sung Yao, Sheng-He Wang