Patents by Inventor Wei-Chun Chang
Wei-Chun 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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Publication number: 20220137923Abstract: A computing device for floating-point mathematic operation using look-up table is provided. The computing device includes: a bit arrangement unit used for receiving a floating-point input data and performing a bit arrangement or a format conversion on the floating-point input data to generate multiple index blocks; a first look-up table unit group used for receiving the index blocks and performing look-up operation using the index blocks as index to generate a plurality of look-up table results; and an operation unit used for performing operation on the look-up table results of the first look-up table unit group to generate an operation output.Type: ApplicationFiled: October 21, 2021Publication date: May 5, 2022Inventors: Yuan-Hsiang KUO, Chia-Lin LU, Wei-Chun CHANG, Hao-Cing JHOU, Jen-Shi WU, Tsung-Hsien LIN
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Patent number: 11134206Abstract: An imaging system includes an image combiner, at least one reflecting mirror, an image generating device and an indication mark. The at least one reflecting mirror is disposed with respect to the image combiner. The image generating device is disposed with respect to the at least one reflecting mirror. When the image generating device displays an image, a light projected by the image generating device is reflected by the at least one reflecting mirror to the image combiner, so as to form a virtual image through the image combiner. The indicating mark is disposed at a periphery of the image combiner.Type: GrantFiled: April 29, 2020Date of Patent: September 28, 2021Assignee: Qisda CorporationInventors: Tsung-Hsun Wu, Wei-Chun Chang
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Publication number: 20210249405Abstract: A low cost IC solution is disclosed to provide Super CMOS microelectronics macros. Hereinafter, the Super CMOS or Schottky CMOS all refer to SCMOS. The SCMOS device solutions with a niche circuit element, the complementary low threshold Schottky barrier diode pairs (SBD) made by selected metal barrier contacts (Co/Ti) to P—and N—Si beds of the CMOS transistors. A DTL like new circuit topology and designed wide contents of broad product libraries, which used the integrated SBD and transistors (BJT, CMOS, and Flash versions) as basic components. The macros include diodes that are selectively attached to the diffusion bed of the transistors, configuring them to form generic logic gates, memory cores, and analog functional blocks from simple to the complicated, from discrete components to all grades of VLSI chips. Solar photon voltaic electricity conversion and bio-lab-on-a-chip are two newly extended fields of the SCMOS IC applications.Type: ApplicationFiled: April 27, 2021Publication date: August 12, 2021Inventor: Augustine Wei-Chun Chang
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Patent number: 11024704Abstract: A manufacturing method of a capacitor structure includes the following steps. A first capacitor is formed on a substrate. The first capacitor includes a first electrically conductive pattern and a second electrically conductive pattern of a first electrically conductive layer and a first dielectric layer disposed therebetween in a horizontal direction. A second capacitor is formed on the substrate before forming the first capacitor. The second capacitor includes a third electrically conductive pattern and a fourth electrically conductive pattern of a second electrically conductive layer and a second dielectric layer disposed therebetween in the horizontal direction. A thickness of the second electrically conductive layer is monitored. A target value of a thickness of the first electrically conductive layer is controlled in accordance with a value of a monitored thickness of the second electrically conductive layer.Type: GrantFiled: February 26, 2020Date of Patent: June 1, 2021Assignee: United Semiconductor (Xiamen) Co., Ltd.Inventors: Wei-Chun Chang, Han-Min Huang, You-Di Jhang, Wen Yi Tan
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Publication number: 20210147507Abstract: The technology relates generally to the field of immunology and relates in part to compositions and methods for activating cells, including, for example T cells that express chimeric antigen receptors or recombinant TCRs, and reducing cytotoxicity, using chimeric polypeptides including MyD88 and signaling domains of receptor mediators of costimulation.Type: ApplicationFiled: May 8, 2018Publication date: May 20, 2021Inventors: Joseph Henri Bayle, Wei-Chun Chang, Aaron Edward Foster, David Michael Spencer
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Patent number: 10991686Abstract: A low cost IC solution is disclosed to provide Super CMOS microelectronics macros. Hereinafter, the Super CMOS or Schottky CMOS all refer to SCMOS. The SCMOS device solutions with a niche circuit element, the complementary low threshold Schottky barrier diode pairs (SBD) made by selected metal barrier contacts (Co/Ti) to P— and N—Si beds of the CMOS transistors. A DTL like new circuit topology and designed wide contents of broad product libraries, which used the integrated SBD and transistors (BJT, CMOS, and Flash versions) as basic components. The macros include diodes that are selectively attached to the diffusion bed of the transistors, configuring them to form generic logic gates, memory cores, and analog functional blocks from simple to the complicated, from discrete components to all grades of VLSI chips. Solar photon voltaic electricity conversion and bio-lab-on-a-chip are two newly extended fields of the SCMOS IC applications.Type: GrantFiled: August 5, 2019Date of Patent: April 27, 2021Assignee: SCHOTTKY LSI, INC.Inventor: Augustine Wei-Chun Chang
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Publication number: 20210107966Abstract: The technology relates generally to the field of immunology and relates in part to compositions and methods for growing and storing modified natural killer cells, including for example, conditional chemical regulation of natural killer cell function. The technology further relates to pharmaceutical compositions and treatment of subjects using modified natural killer cells.Type: ApplicationFiled: May 6, 2019Publication date: April 15, 2021Inventors: Joseph Henri Bayle, Xiaomei Wang, David Michael Spencer, Wei-Chun Chang
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Patent number: 10958882Abstract: A projection device and a photo coupler circuit for the same are disclosed. The photo coupler circuit includes a logic unit, a number of integration units and a selection unit. The logic unit is configured to receive a number of first control signals and a number of first PWM signals from a main circuit of the projection device, and to output a number of second PWM signals and one or more second control signals according to the first control signals and the first PWM signals. The integration units are coupled to the logic unit. Each of the integration units is configured to generate an integration signal according to one of the second PWM signals. The selection unit is coupled to the integration units to select one of the integration signals to be output to a light source drive circuit of the projection device according to the second control signals.Type: GrantFiled: May 25, 2020Date of Patent: March 23, 2021Assignee: Qisda CorporationInventors: Wei-Chun Chang, Tsung-Hsun Wu
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Patent number: 10935875Abstract: A projector includes a light source, a color wheel, a housing, a motor, a lens module, an optical detection module, and a feedback module. The light source is used for providing a light beam. The color wheel includes a plurality of optical filtering segments for generating light with a plurality of colors. The housing is connected to the color wheel. The housing has a timing mark. The motor is connected to the housing for rotating the color wheel through the housing. The lens module is used for outputting the light with the plurality of colors. When the housing is rotated, the optical detection module generates a pulse width modulation signal according variations of gray levels of the housing. The feedback module is coupled to the optical detection module for conditionally outputting an adjusted voltage to the optical detection module according to the pulse width modulation signal.Type: GrantFiled: August 29, 2019Date of Patent: March 2, 2021Assignee: Qisda CorporationInventors: Jen-Te Chuang, Wei-Chun Chang
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Patent number: 10911729Abstract: An imaging system includes an image combiner, at least one reflecting mirror, an image generating device, a communication module and a distance sensor. The at least one reflecting mirror is disposed with respect to the image combiner. The image generating device is disposed with respect to the at least one reflecting mirror. When the image generating device displays an image, a light projected by the image generating device is reflected by the at least one reflecting mirror to the image combiner, so as to form a virtual image through the image combiner. The distance sensor senses a distance between an object and the imaging system and transmits the distance to the image generating device through the communication module. When the image generating device determines that the distance is larger than a predetermined threshold, the image generating device adjusts a display size of the image according to the distance.Type: GrantFiled: April 21, 2020Date of Patent: February 2, 2021Assignee: Qisda CorporationInventors: Tsung-Hsun Wu, Wei-Chun Chang
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Patent number: 10900815Abstract: A color wheel phase detection method and a projector using the same are provided. Firstly, a projector, including a light source, a color wheel, a motor, an indication signal generator and a controller, is provided, wherein the motor drive having n pairs of magnetic polarities drives the color wheel, including n color block groups of the same kind, to rotate, wherein n is a positive integer ?1. Then, the color wheel is driven to rotate by the motor. Then, a light is projected on the n color block groups by the light source. Then, a phase signal having 2n zero-crossing points is generated by the motor. Then, an indication signal including n pulses corresponding to n zero-crossing points is generated by the indication signal generator according to the 2n zero-crossing points. Then, the phase of the color wheel is detected by the controller according to the indication signal.Type: GrantFiled: May 6, 2019Date of Patent: January 26, 2021Assignee: Qisda CorporationInventors: Wei-Chun Chang, Chun-Kun Yu, Chien-Wei Sung
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Patent number: 10894873Abstract: An ultraviolet (UV) absorbing compound and uses of the same are provided. The UV absorbing compound is represented by the following Formula I: in Formula I, each R is independently H, C1-C20 alkyl, glycidyl, or —(CH2CH2O)m—(CH2)p—CH3, wherein m is an integer of 1 to 20, p is an integer of 0 to 20, and n is an integer of 0 to 3.Type: GrantFiled: May 16, 2019Date of Patent: January 19, 2021Assignee: CHITEC TECHNOLOGY CO., LTD.Inventors: Chingfan Chris Chiu, Wei-Chun Chang, Huang-Min Wu, Yi-Shuo Huang
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Publication number: 20200404227Abstract: A projection device and a photo coupler circuit for the same are disclosed. The photo coupler circuit includes a logic unit, a number of integration units and a selection unit. The logic unit is configured to receive a number of first control signals and a number of first PWM signals from a main circuit of the projection device, and to output a number of second PWM signals and one or more second control signals according to the first control signals and the first PWM signals. The integration units are coupled to the logic unit. Each of the integration units is configured to generate an integration signal according to one of the second PWM signals. The selection unit is coupled to the integration units to select one of the integration signals to be output to a light source drive circuit of the projection device according to the second control signals.Type: ApplicationFiled: May 25, 2020Publication date: December 24, 2020Applicant: Qisda CorporationInventors: Wei-Chun CHANG, Tsung-Hsun WU
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Publication number: 20200366855Abstract: An imaging system includes an image combiner, at least one reflecting mirror, an image generating device and an indication mark. The at least one reflecting mirror is disposed with respect to the image combiner. The image generating device is disposed with respect to the at least one reflecting mirror. When the image generating device displays an image, a light projected by the image generating device is reflected by the at least one reflecting mirror to the image combiner, so as to form a virtual image through the image combiner. The indicating mark is disposed at a periphery of the image combiner.Type: ApplicationFiled: April 29, 2020Publication date: November 19, 2020Inventors: Tsung-Hsun Wu, Wei-Chun Chang
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Publication number: 20200358990Abstract: An imaging system includes an image combiner, at least one reflecting mirror, an image generating device, a communication module and a distance sensor. The at least one reflecting mirror is disposed with respect to the image combiner. The image generating device is disposed with respect to the at least one reflecting mirror. When the image generating device displays an image, a light projected by the image generating device is reflected by the at least one reflecting mirror to the image combiner, so as to form a virtual image through the image combiner. The distance sensor senses a distance between an object and the imaging system and transmits the distance to the image generating device through the communication module. When the image generating device determines that the distance is larger than a predetermined threshold, the image generating device adjusts a display size of the image according to the distance.Type: ApplicationFiled: April 21, 2020Publication date: November 12, 2020Inventors: Tsung-Hsun Wu, Wei-Chun Chang
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Publication number: 20200287546Abstract: Integrated circuits described herein implement an x-input logic gate. The integrated circuit includes a plurality of Schottky diodes that includes x Schottky diodes and a plurality of source-follower transistors that includes x source-follower transistors. Each respective source-follower transistor of the plurality of source-follower transistors includes a respective gate node that is coupled to a respective Schottky diode. A first source-follower transistor of the plurality of source-follower transistors is connected serially to a second source-follower transistor of the plurality of source-follower transistors.Type: ApplicationFiled: May 26, 2020Publication date: September 10, 2020Inventors: Augustine Wei-Chun Chang, Pierre Dermy
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Patent number: 10717714Abstract: A reactive UV absorber suitable for polyurethane is provided. The reactive UV absorber is a compound of formula 1: wherein R1 is H or Cl.Type: GrantFiled: July 7, 2017Date of Patent: July 21, 2020Assignee: CHITEC TECHNOLOGY CO., LTD.Inventors: Chingfan Chris Chiu, Huang-min Wu, Wei-chun Chang, Chi-feng Wu, Ching-hao Cheng, Shao-hsuan Wu
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Publication number: 20200199084Abstract: A reactive UV absorber suitable for polyurethane is provided. The reactive UV absorber is a compound of formula 1: wherein R1 is H or Cl.Type: ApplicationFiled: July 7, 2017Publication date: June 25, 2020Inventors: Chingfan Chris CHIU, Huang-min WU, Wei-chun CHANG, Chi-feng WU, Ching-hao CHENG, Shao-hsuan WU
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Patent number: 10666260Abstract: Integrated circuits described herein implement an x-input logic gate. The integrated circuit includes a plurality of Schottky diodes that includes x Schottky diodes and a plurality of source-follower transistors that includes x source-follower transistors. Each respective source-follower transistor of the plurality of source-follower transistors includes a respective gate node that is coupled to a respective Schottky diode. A first source-follower transistor of the plurality of source-follower transistors is connected serially to a second source-follower transistor of the plurality of source-follower transistors.Type: GrantFiled: November 17, 2017Date of Patent: May 26, 2020Assignee: SCHOTTKY LSI, INC.Inventors: Augustine Wei-Chun Chang, Pierre Dermy
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Publication number: 20200144248Abstract: A low cost IC solution is disclosed to provide Super CMOS microelectronics macros. Hereinafter, the Super CMOS or Schottky CMOS all refer to SCMOS. The SCMOS device solutions with a niche circuit element, the complementary low threshold Schottky barrier diode pairs (SBD) made by selected metal barrier contacts (Co/Ti) to P— and N—Si beds of the CMOS transistors. A DTL like new circuit topology and designed wide contents of broad product libraries, which used the integrated SBD and transistors (BJT, CMOS, and Flash versions) as basic components. The macros include diodes that are selectively attached to the diffusion bed of the transistors, configuring them to form generic logic gates, memory cores, and analog functional blocks from simple to the complicated, from discrete components to all grades of VLSI chips. Solar photon voltaic electricity conversion and bio-lab-on-a-chip are two newly extended fields of the SCMOS IC applications.Type: ApplicationFiled: August 5, 2019Publication date: May 7, 2020Inventor: Augustine Wei-Chun Chang