Patents by Inventor Yung-Che Chang
Yung-Che 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: 20240177893Abstract: An over-current protection device includes a heat-sensitive layer and an electrode layer. The electrode layer includes a top metal layer and a bottom metal layer, and the heat-sensitive layer attached therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a conductive filler. The polymer matrix includes a polyolefin-based homopolymer and a polyolefin-based copolymer. The polyolefin-based homopolymer has a first coefficient of thermal expansion (CTE), and the polyolefin-based copolymer has a second CTE lower than the first CTE. The polyolefin-based homopolymer and the polyolefin-based copolymer together form an interpenetrating polymer network (IPN).Type: ApplicationFiled: May 3, 2023Publication date: May 30, 2024Inventors: CHENG-YU TUNG, Chia-Yuan Lee, HSIU-CHE YEN, CHEN-NAN LIU, YUNG-HSIEN CHANG, Yao-Te Chang, FU-HUA CHU, Takashi Hasunuma
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Patent number: 11990258Abstract: An over-current protection device includes first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, a conductive filler, and a titanium-containing dielectric filler. The polymer matrix has a fluoropolymer. The titanium-containing dielectric filler has a compound represented by a general formula of MTiO3, wherein the M represents transition metal or alkaline earth metal. The total volume of the PTC material layer is calculated as 100%, and the titanium-containing dielectric filler accounts to for 5-15% by volume of the PTC material layer.Type: GrantFiled: September 28, 2022Date of Patent: May 21, 2024Assignee: POLYTRONICS TECHNOLOGY CORP.Inventors: Hsiu-Che Yen, Yung-Hsien Chang, Cheng-Yu Tung, Chen-Nan Liu, Chia-Yuan Lee, Yu-Chieh Fu, Yao-Te Chang, Fu-Hua Chu
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Publication number: 20240145132Abstract: An over-current protection device includes first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, and a conductive filler. The polymer matrix has a fluoropolymer. The total volume of the PTC material layer is calculated as 100%, and the fluoropolymer accounts for 47-62% by volume of the PTC material layer. The fluoropolymer has a melt viscosity higher than 3000 Pa·s.Type: ApplicationFiled: March 16, 2023Publication date: May 2, 2024Inventors: CHENG-YU TUNG, CHEN-NAN LIU, Chia-Yuan Lee, HSIU-CHE YEN, YUNG-HSIEN CHANG, Yao-Te Chang, FU-HUA CHU
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Publication number: 20240145133Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a first conductive filler. The polymer matrix includes a polyolefin-based polymer and a fluoropolymer. The fluoropolymer has a melt flow index higher than 1.9 g/10 min, and the polyolefin-based polymer and the fluoropolymer together form an interpenetrating polymer network (IPN). The first conductive filler has a metal-ceramic compound dispersed in the polymer matrix.Type: ApplicationFiled: April 5, 2023Publication date: May 2, 2024Inventors: CHEN-NAN LIU, YUNG-HSIEN CHANG, CHENG-YU TUNG, HSIU-CHE YEN, Chia-Yuan LEE, Yao-Te CHANG, FU-HUA CHU
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Publication number: 20240127988Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 48% to 55%. The conductive filler has a metal-ceramic compound.Type: ApplicationFiled: March 2, 2023Publication date: April 18, 2024Inventors: HSIU-CHE YEN, YUNG-HSIEN CHANG, CHENG-YU TUNG, Chia-Yuan Lee, CHEN-NAN LIU, Yao-Te Chang, FU-HUA CHU
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Publication number: 20240127989Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 33% to 42%.Type: ApplicationFiled: January 25, 2023Publication date: April 18, 2024Inventors: CHIA-YUAN LEE, CHENG-YU TUNG, HSIU-CHE YEN, CHEN-NAN LIU, YUNG-HSIEN CHANG, YAO-TE CHANG, FU-HUA CHU
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Publication number: 20240080505Abstract: A method, comprising: detecting an outage of at least one functionality in a live streaming; performing an first operation toward a second user terminal; storing data of the first operation in a database of the first user terminal; and displaying an effect corresponding to the first operation during the outage. The present disclosure may store the data of operation performed by the user terminal during outage and process the operation after the outage is recovered. Therefore, the streamers and viewers may feel interested and satisfied, instead of feeling anxious, and the user experience may be enhanced.Type: ApplicationFiled: June 23, 2023Publication date: March 7, 2024Inventors: Yung-Chi HSU, Hsing-Yu TSAI, Chia-Han CHANG, Yi-Jou LEE, Ming-Che CHENG
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Patent number: 11919284Abstract: A rotary seat including a base includes an outer surface, and a composite material layer attached to at least a part of the outer surface. The base also includes a recess for accommodating a turntable and including a first opening on the outer surface. The material of the composite material layer includes fibers and a resin. Therefore, the rotary seat may be more lightweight. A rotary table is also provided and includes the rotary seat, a driving device which drives the rotary seat to rotate, and a turntable which is rotatably disposed in the recess of the base.Type: GrantFiled: June 11, 2021Date of Patent: March 5, 2024Assignee: Hiwin Technologies Corp.Inventors: Yung-Tsai Chuo, Yaw-Zen Chang, Jui-Che Lin, Yu-Hsien Ho, Yu Liu
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Publication number: 20080231819Abstract: A method of displaying an image for a document projector is disclosed. The method includes capturing the image of an object to get an input image; generating a frame; overlapping the frame and the input image, wherein the frame separates the input image into an emphasized area and a not-emphasized area to form an output image; and displaying the output image.Type: ApplicationFiled: October 11, 2007Publication date: September 25, 2008Applicant: AVERMEDIA TECHNOLOGIES, INC.Inventors: Yung-Che Chang, Chih-Ming Chen, Lien-Kai Chou, Yung-Hsi Wu
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Publication number: 20080055564Abstract: An interactive document camera system includes a document camera, a display panel, and a handwriting sensor module. The document camera can simultaneously output an image of an object and a handwriting input obtained from the handwriting sensor module. The inactive document camera system further includes a computer system so that an operating image provided by the computer system can be simultaneously outputted, and a handwriting data corresponding to the handwriting input can be recorded in the computer system. The interactive document camera includes an image-sensing and processing unit, different connecting interfaces and an image synthesizer. The different connecting interfaces are selectively connected to and communicated with a display panel, a handwriting sensor module or a computer system.Type: ApplicationFiled: February 8, 2007Publication date: March 6, 2008Applicant: AVERMEDIA TECHNOLOGIES, INC.Inventors: Yung-Che Chang, Jye-Ching Cheng, I-Chang Yang, Christopher Yen
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Publication number: 20060171038Abstract: The present invention relates to a digital image zoom system. The digital image zoom system includes an image sensor, an A/D converter and an image processor. The image sensor senses the object images, wherein the sensing capacity of the image sensor is larger than the resolution of the display. The A/D converter converts the object images into digital images. The image processor retrieves a zoom image from the digital images and produces the zoom image having different sensing resolution according to the sensing capacity of the image sensor.Type: ApplicationFiled: January 5, 2006Publication date: August 3, 2006Inventors: Po-Chih Hung, Ying-Ming Hwang, Yung-Che Chang
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Patent number: 6568381Abstract: A paint ball gun includes a body portion, a handle, and a triggering mechanism mounted within the body portion and the handle, improvement wherein the triggering mechanism comprises a trigger pivotally mounted in the body portion, a micro-switch mounted within the handle and having a contact button disposed behind the trigger, a solenoid valve having a valve rod, means for controlling the valve rod of the solenoid valve by way of the micro-switch, a magnet mounted within the handle for attracting the valve rod to original position, a lever having a lower portion aligned with the valve rod and an upper end extending into a passage of the body portion, a first spring urging the upper end of the lever into the passage, a striking rod slidably fitted in the passage and having a bottom formed with a recess, and a second spring fitted in the passage and having an end urging against an end of the striking rod.Type: GrantFiled: October 4, 2001Date of Patent: May 27, 2003Inventor: Yung Che Chang
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Publication number: 20030066520Abstract: A paint ball gun includes a body portion, a handle, and a triggering mechanism mounted within the body portion and the handle, improvement wherein the triggering mechanism comprises a trigger pivotally mounted in the body portion, a micro-switch mounted within the handle and having a contact button disposed behind the trigger, a solenoid valve having a valve rod, means for controlling the valve rod of the solenoid valve by way of the micro-switch, a magnet mounted within the handle for attracting the valve rod to original position, a lever having a lower portion aligned with the valve rod and an upper end extending into a passage of the body portion, a first spring urging the upper end of the lever into the passage, a striking rod slidably fitted in the passage and having a bottom formed with a recess, and a second spring fitted in the passage and having an end urging against an end of the striking rod.Type: ApplicationFiled: October 4, 2001Publication date: April 10, 2003Inventor: Yung Che Chang
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Publication number: 20020112714Abstract: A paint bullet feeder for a paint ball gun includes a cartridge, a vibration means mounted within the cartridge, and a resilient means for absorbing vibration to the cartridge, whereby bullets can be smoothly fed to a gun without influencing the aiming of the gunType: ApplicationFiled: February 21, 2001Publication date: August 22, 2002Inventor: Yung Che Chang
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Publication number: 20020106137Abstract: An image capture device has an image sensor, a cone, a support arm, a base and an indicator. The image sensor, assembled within the cone, is utilized to capture an image of an object and generate an image signal thereof, while the support arm connects the cone and the base. The indicator comprises at least one lamp assembled within the rim of the cone for emitting light to demarcating an image capture area of the image capture device.Type: ApplicationFiled: November 14, 2001Publication date: August 8, 2002Inventors: Kun-Chou Chen, In-Ming Hwang, Yung-Che Chang
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Patent number: 6226040Abstract: Apparatus for generating at least a selected area in a picture is disclosed herein. The picture and the selected area are displayed on a video display means, and the user can optionally adjust the position and size of the selected area. The apparatus including the following devices. A first converting device that is used to generate a digital signal and a pointer defining signal according to a computer video signal. The picture is transferred from the computer video signal, and the selected area is defined in the pointer defining signal. A first adapting device that is utilized to adapt the format of the computer video signal to suit a digital display format corresponding to the pointer defining signal. A storage device determines said display timing of all the pixels of the picture. A pointer generating device generates a plurality of edge of the selected area according to the pointer defining signal.Type: GrantFiled: April 14, 1998Date of Patent: May 1, 2001Assignees: Avermedia Technologies, Inc. (Taiwan Company), Avermedia Technologies, Inc. (U.S.A. Company)Inventors: Chung-Song Kuo, Yung-Che Chang, Kun-Chou Chen, Hsien-Wen Cheng
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Patent number: 6137469Abstract: A computer-TV, video converting apparatus which transfers any determined partial area of a computer display into a zoomed image displayed onto a large scale TV, screen used for a briefing or a seminar in addition to a preformed partial area converting function, comprising a main converter with a build-in remote signal receiver, a computer cursor coordinate convening device and a remote controller while the remote controller provides the infrared or radio signal to the remote signal receiver by operating the mouse function keys of the remote controller to move the cursor to a center of a determined partial area of the computer display. The computer cursor coordinate converting device converts the absolute coordinate of the cursor center into a relative coordinates and sent the relative coordinate data to the main converter, a microprocessor and a display controller of the main converter then converts the expected zoom area into a video signal to the TV, screen to provide a zoomed image thereon.Type: GrantFiled: August 11, 1997Date of Patent: October 24, 2000Assignee: Avermedia Technologies, Inc.Inventors: Ming Chi Wu, Hsin-Hung Yeh, Yung-Che Chang