Patents by Inventor Shih-Chieh Wang
Shih-Chieh Wang 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: 20170329380Abstract: A power supply for an information handling system includes a rectifier circuit that is coupled to a power factor correction circuit. The power factor correction circuit includes a bulk capacitor. An extended hold-up capacitor is coupled in parallel to the bulk capacitor, via an electronic switch. The electronic switch has a first terminal coupled to the bulk capacitor and a second terminal coupled to the extended hold-up capacitor. A control circuit is coupled to a third terminal of the electronic switch and controls the operation of the electronic switch. An extended hold-up circuit is coupled to the extended hold-up capacitor and an output terminal of the power factor correction circuit. A digital signal controller is coupled to the extended hold-up circuit. The digital signal controller controls the operation of the extended hold-up circuit, and a DC to DC converter is coupled to the extended hold-up circuit.Type: ApplicationFiled: May 13, 2016Publication date: November 16, 2017Inventors: TSAI-FU HUNG, SHIH-CHIEH WANG, KUANG-HAO CHOU, DENNIS A. MARTIN
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Publication number: 20170302503Abstract: An image-type notification and recording method of a hardware event and status of an electronic device, including the following steps: storing at least one mainboard image and image data to firmware; transmitting, by a component, a detected text or digit corresponding to an event or a status to a processor; reading, by the processor, the mainboard image and the image data in the firmware; and displaying, by the processor, according to the text or digit corresponding to the event or the status, the mainboard image of a warning image combined with the corresponding event or status. The present invention also provides an image-type notification and recording system of a hardware event and status of an electronic device, a recording medium, and a computer program product.Type: ApplicationFiled: April 13, 2017Publication date: October 19, 2017Inventors: Chih-Chieh SHEN, Shih-Chieh WANG
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Patent number: 9760139Abstract: Methods and systems for power supply unit (PSU) current sharing may include an In-System Power Monitoring and Management (IPMM) module monitoring an output value of a first power supply unit in a multi-power supply system. In an embodiment, the IPMM module may monitor an output value of a second power supply unit in the multi-power supply system. Additionally, the IPMM module may monitor an output performance parameter for the multi-power supply system. Furthermore, the IPMM module may adjust a setting of at least one of the first power supply unit and the second power supply unit for optimization of a current sharing performance parameter of the multi-power supply system. In various embodiments, the setting may include a droop voltage value, a distribution impedance value, or a set voltage increment value of at least one of the first power supply unit and the second power supply unit.Type: GrantFiled: April 2, 2015Date of Patent: September 12, 2017Assignee: DELL PRODUCTS, L.P.Inventors: Yung Fa Chueh, Tsai-Fu Hung, Chung-Fu Lai, Shih-Chieh Wang
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Patent number: 9735690Abstract: Systems and methods for reducing the line frequency ripple in a resonant converter are described. In some embodiments, a power supply includes a switching network; an LLC resonant tank coupled to the switching network; a rectifier coupled to the LLC resonant tank; and a control circuit coupled to the switching network and to the rectifier, where the control circuit is configured to modify an operating frequency of the switching network to reduce a line frequency ripple at an output of the rectifier.Type: GrantFiled: October 9, 2015Date of Patent: August 15, 2017Assignee: Dell Products, L.P.Inventors: Tsai-Fu Hung, Yu-Hung Lai, Shih-Chieh Wang, Feng-Yu Wu
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Patent number: 9631089Abstract: A thermoplastic polyurethane composite material composition includes a plastic base material and a curing agent, the plastic base material includes a thermoplastic polyurethane and a silicone gum including at least two alkenyl groups in each of molecules thereof, wherein the thermoplastic polyurethane and the silicone gum are uniformly mixed, and a weight ratio of the thermoplastic polyurethane and the silicone gum is ranging from 95.01:4.99 to 99.5:0.5. The curing agent is uniformly mixed with the plastic base material, wherein the curing agent has an adding amount enabling the silicone gum to crosslink to form a silicone rubber.Type: GrantFiled: January 7, 2016Date of Patent: April 25, 2017Assignee: EVERMORE CHEMICAL INDUSTRY CO., LTD.Inventors: Wei-Ho Ting, Pin-Jung Chen, Charles Huang, Shih-Chieh Wang
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Publication number: 20170104417Abstract: Systems and methods for reducing the line frequency ripple in a resonant converter are described. In some embodiments, a power supply includes a switching network; an LLC resonant tank coupled to the switching network; a rectifier coupled to the LLC resonant tank; and a control circuit coupled to the switching network and to the rectifier, where the control circuit is configured to modify an operating frequency of the switching network to reduce a line frequency ripple at an output of the rectifier.Type: ApplicationFiled: October 9, 2015Publication date: April 13, 2017Applicant: DELL PRODUCTS, L.P.Inventors: Tsai-Fu Hung, Yu-Hung Lai, Shih-Chieh Wang, Feng-Yu Wu
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Publication number: 20170015825Abstract: A thermoplastic polyurethane composite material composition includes a plastic base material and a curing agent, the plastic base material includes a thermoplastic polyurethane and a silicone gum including at least two alkenyl groups in each of molecules thereof, wherein the thermoplastic polyurethane and the silicone gum are uniformly mixed, and a weight ratio of the thermoplastic polyurethane and the silicone gum is ranging from 95.01:4.99 to 99.5:0.5. The curing agent is uniformly mixed with the plastic base material, wherein the curing agent has an adding amount enabling the silicone gum to crosslink to form a silicone rubber.Type: ApplicationFiled: January 7, 2016Publication date: January 19, 2017Inventors: Wei-Ho TING, Pin-Jung CHEN, Charles HUANG, Shih-Chieh WANG
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Publication number: 20160291660Abstract: Methods and systems for power supply unit (PSU) current sharing may include an In-System Power Monitoring and Management (IPMM) module monitoring an output value of a first power supply unit in a multi-power supply system. In an embodiment, the IPMM module may monitor an output value of a second power supply unit in the multi-power supply system. Additionally, the IPMM module may monitor an output performance parameter for the multi-power supply system. Furthermore, the IPMM module may adjust a setting of at least one of the first power supply unit and the second power supply unit for optimization of a current sharing performance parameter of the multi-power supply system. In various embodiments, the setting may include a droop voltage value, a distribution impedance value, or a set voltage increment value of at least one of the first power supply unit and the second power supply unit.Type: ApplicationFiled: April 2, 2015Publication date: October 6, 2016Applicant: DELL PRODUCTS, L.P.Inventors: Yung Fa Chueh, Tsai-Fu Hung, Chung-Fu Lai, Shih-Chieh Wang
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Patent number: 9399242Abstract: A method of preparing polyurethane prepolymer does not require using a toxic isocyanate monomer (manufactured by harmful phosgene) as a raw material. Epoxy resin and carbon dioxide are used as major raw materials to form cyclic carbonates to be reacted with a functional group oligomer, and then amino groups in a hydrophilic (ether group) or hydrophobic (siloxane group) diamine polymer are used for performing a ring-opening polymerization, and the microwave irradiation is used in the ring-opening polymerization to efficiently synthesize the amino-terminated PU prepolymer, and then an acrylic group at an end is added to manufacture an UV cross-linking PU (UV-PU) oligomer which can be coated onto a fabric surface, and the fabric is dried by UV radiation for a surface treatment to form a washing-resisted long lasting hydrophilic or hydrophobic PU fabric.Type: GrantFiled: February 24, 2014Date of Patent: July 26, 2016Assignee: TAMKANG UNIVERSITY (A UNIVERSITY OF TAIWAN)Inventors: Jing-Zhong Hwuang, Guei-Jia Chang, Jhong-Jheng Lin, Cheng-Wei Tsai, Shih-Chieh Wang, Po-Cheng Chen, Kan-Nan Chen, Jen-Taut Yeh
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Publication number: 20160134108Abstract: Active droop current sharing among power supply units may regulate output currents of power supply units supplying shared current to a common load. The regulation may employ a combination of droop control and active current control. The shared current may be regulated such that each power supply unit provides a substantially equal share of the total current supplied. A current difference between two power supplies may be regulated to be within a desired maximum threshold for current difference.Type: ApplicationFiled: November 6, 2014Publication date: May 12, 2016Inventors: Tsai-Fu Hung, Shih-Chieh Wang, Yi-Chiao Hsu, Chung-Fu Lai
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Patent number: 8900673Abstract: A long-lasting water-repellent textile treatment process using a curable polydimethylsiloxane (PDMS)-containing polyurethane (PU) system includes the steps of mixing a di-isocyanate with a PDMS-containing material, and reacting the di-isocyanate with the PDMS-containing material to form an NCO-terminated PDMS-containing PU system. The treatment process obtains a long-lasting water-repellent textile, which overcomes the shortcomings in hand feel, washing durability, and breathability of the conventional water-repellent textile, while having the advantages of low cost and of being an environmentally friendly process, while also providing useful and practical industrial applications.Type: GrantFiled: March 21, 2013Date of Patent: December 2, 2014Inventors: Wei-hung Chen, Po-cheng Chen, Shih-chieh Wang, Kan-nan Chen
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Publication number: 20140320051Abstract: A motor winding and power electronic switch assembly having switchable output capability is disclosed to include a first winding set including a first upper winding and first lower winding connected to a common contact, a first switch set including four power electronic switches electrically connected to the first winding set, a second winding set including a second upper winding and a second lower winding and connected to the common contact, a second switch set including four power electronic switches electrically connected to the second winding set, a third winding set including a third upper winding and a third lower winding connected to the common contact, a third switch set including four power electronic switches electrically connected to the third winding set, and a configuration control means for controlling on/off of the power electronic switches to form a H type drive configuration or Y type drive configuration.Type: ApplicationFiled: April 25, 2013Publication date: October 30, 2014Applicant: J.D. COMPONENTS CO., LTD.Inventors: Shih-Chieh WANG, Yuan-Kuei LEE, Mei-Hao WU
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Publication number: 20140242292Abstract: A method of preparing polyurethane prepolymer does not require using a toxic isocyanate monomer (manufactured by harmful phosgene) as a raw material. Epoxy resin and carbon dioxide are used as major raw materials to form cyclic carbonates to be reacted with a functional group oligomer, and then amino groups in a hydrophilic (ether group) or hydrophobic (siloxane group) diamine polymer are used for performing a ring-opening polymerization, and the microwave irradiation is used in the ring-opening polymerization to efficiently synthesize the amino-terminated PU prepolymer, and then an acrylic group at an end is added to manufacture an UV cross-linking PU (UV-PU) oligomer which can be coated onto a fabric surface, and the fabric is dried by UV radiation for a surface treatment to form a washing-resisted long lasting hydrophilic or hydrophobic PU fabric.Type: ApplicationFiled: February 24, 2014Publication date: August 28, 2014Applicant: Tamkang UniversityInventors: Jing-Zhong Hwuang, Guei-Jia Chang, Jhong-Jheng Lin, Cheng-Wei Tsai, Shih-Chieh Wang, Po-Cheng Chen, Kan-Nan Chen, Jen-Taut Yeh
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Patent number: 8815970Abstract: A method of preparing polyurethane prepolymer does not require using a toxic isocyanate monomer (manufactured by harmful phosgene) as a raw material. Epoxy resin and carbon dioxide are used as major raw materials to form cyclic carbonates to be reacted with a functional group oligomer, and then amino groups in a hydrophilic (ether group) or hydrophobic (siloxane group) diamine polymer are used for performing a ring-opening polymerization, and the microwave irradiation is used in the ring-opening polymerization to efficiently synthesize the amino-terminated PU prepolymer, and then an acrylic group at an end is added to manufacture an UV cross-linking PU (UV-PU) oligomer which can be coated onto a fabric surface, and the fabric is dried by UV radiation for a surface treatment to form a washing-resisted long lasting hydrophilic or hydrophobic PU fabric.Type: GrantFiled: September 22, 2011Date of Patent: August 26, 2014Assignee: Tamkang University (A University of Taiwan)Inventors: Jing-Zhong Hwang, Guei-Jia Chang, Jhong-Jheng Lin, Cheng-Wei Tsai, Shih-Chieh Wang, Po-Cheng Chen, Kan-Nan Chen, Kan-Nan Chen
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Patent number: 8437515Abstract: A face detection apparatus and a face detection method thereof are provided. The face detection apparatus includes a rectangle integral image unit, a feature mapping unit and a cascade and score unit. The rectangle integral image unit provides a rectangle integral image according to an original image. The feature mapping unit determines a face candidate region according to rectangular face feature templates, and calculates feature values of the rectangular face feature templates according to the rectangle integral image. The cascade and score unit judges whether the face candidate region conforms to cascade conditions or not, and gives the face candidate region a score according to the feature values when the face candidate region conforms to the cascade conditions. The face candidate region is a non-face region if the score of the face candidate region is lower than a threshold value.Type: GrantFiled: October 29, 2009Date of Patent: May 7, 2013Assignee: Novatek Microelectronics Corp.Inventors: Kai-Tai Song, Meng-Ju Han, Shih-Chieh Wang, Ming-Feng Chiang, Chia-Ho Lin
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Patent number: 8437516Abstract: A facial expression recognition apparatus and a facial expression recognition method thereof are provided. The facial expression recognition apparatus comprises a gray image generating unit, a face edge detection unit, a motion skin extraction unit, a face contour generating unit and a facial expression recognition unit. The gray image generating unit generates a gray image according to an original image. The face edge detection unit outputs a face edge detection result according to the gray image. The motion skin extraction unit generates a motion skin extraction result according to the original image, and generates a face and background division result according to the motion skin extraction result. The face contour generating unit outputs a face contour according to the gray image, the face edge detection result and the face and background division result. The facial expression recognition unit outputs a facial expression recognition result according to the face contour.Type: GrantFiled: November 16, 2009Date of Patent: May 7, 2013Assignee: Novatek Microelectronics Corp.Inventors: Kai-Tai Song, Meng-Ju Han, Shih-Chieh Wang, Chia-Ho Lin, Chi-Yi Lin
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Publication number: 20130004677Abstract: A method of preparing polyurethane prepolymer does not require using a toxic isocyanate monomer (manufactured by harmful phosgene) as a raw material. Epoxy resin and carbon dioxide are used as major raw materials to form cyclic carbonates to be reacted with a functional group oligomer, and then amino groups in a hydrophilic (ether group) or hydrophobic (siloxane group) diamine polymer are used for performing a ring-opening polymerization, and the microwave irradiation is used in the ring-opening polymerization to efficiently synthesize the amino-terminated PU prepolymer, and then an acrylic group at an end is added to manufacture an UV cross-linking PU (UV-PU) oligomer which can be coated onto a fabric surface, and the fabric is dried by UV radiation for a surface treatment to form a washing-resisted long lasting hydrophilic or hydrophobic PU fabric.Type: ApplicationFiled: September 22, 2011Publication date: January 3, 2013Inventors: Jing-Zhong HWANG, Guei-Jia CHANG, Jhong-Jheng LIN, Cheng-Wei TSAI, Shih-Chieh WANG, Po-Cheng CHEN, Kan-Nan CHEN, Jen-Taut YEH
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Patent number: 8324821Abstract: A two-wired LED light adjusting system, for controlling the luminance adjustment for a LED lamp module. The light adjusting circuit includes a phase modulating circuit, a LED driving circuit and a controller. The phase modulating circuit generates a phase modulating voltage. The controller detects the phase modulating voltage of various waveforms. When the controller detects the phase modulating voltage of different waveforms, the controller controls the LED driving circuit to enable the LED lamp module to emit light of different luminance according to waveforms of the phase modulating voltage.Type: GrantFiled: December 22, 2010Date of Patent: December 4, 2012Assignee: Weltrend Semiconductor Inc.Inventors: Shih-Chieh Wang, Chiu-Lang Lo, Pu-Ju Su, Yu-Huan Tsai
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Patent number: 8053488Abstract: An ambient temperature curable hydrophilic PU oligomer includes a PU pre-polymer having a hydrophilic center group and a curable terminated group. The ambient temperature curable hydrophilic PU oligomer includes the moisture-curable hydrophilic PU oligomer such as isocyanate-terminated PU pre-polymer and free-radical curable hydrophlic PU oligomer. The isocyanate-terminated PU pre-polymer is synthesized by mixing at least one multi-isocyanate, at least one polyol and one or more diol monomer with hydrophilic group. The acrylate-terminated PU oligomer is synthesized by adding 2-hydroxyethyl methacrylate (HEMA) into the isocyanate-terminated hydrophilic PU pre-polymer. Either acrylate- or isocyanate-terminated PU oligomer can be applied on a textile or a glass surface with a thin-layer coating technology. The curing reactions of these hydrophilic thin-layer coatings are carried out with moisture or UV-radiation, respectively, at ambient temperature.Type: GrantFiled: January 4, 2008Date of Patent: November 8, 2011Assignee: Tamkang UniversityInventors: Jing-Zhong Hwang, Shih-Chieh Wang, Po-Cheng Chen, Kan-Nan Chen
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Publication number: 20110150301Abstract: A face identification method includes the following steps. First, first and second sets of hidden layer parameters, which respectively correspond to first and second database character vectors, are obtained by way of training according to multiple first and second training character data. Next, first and second back propagation neural networks (BPNNs) are established according to the first and second sets of hidden layer parameters, respectively. Then, to-be-identified data are provided to the first BPNN to find a first output character vector. Next, whether the first output character vector satisfies an identification criterion is determined. If not, the to-be-identified data are provided to the second BPNN to find a second output character vector. Then, whether the second output character vector satisfies the identification criterion is determined. If yes, the to-be-identified data are identified as corresponding to the second database character vector.Type: ApplicationFiled: July 6, 2010Publication date: June 23, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Kai-Tai Song, Meng-Ju Han, Shih-Chieh Wang