Patents by Inventor Wei-Chung Cheng
Wei-Chung 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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Patent number: 11908298Abstract: The present disclosure discloses a smoke detection system and a smoke detection method. The smoke detection system includes a camera, a storage unit, and a processor. The camera acquires a current image and a previous image. The storage unit stores a plurality of modules. The processor is coupled with the camera and executes the plurality of modules. The processor generates a difference image based on the current image and the previous image. The processor inputs the current image and the difference image to a semantic segmentation model so that the semantic segmentation model outputs a smoke confidence map. The smoke confidence map is generated based on whether a current environment is a dark environment or a bright environment. The processor analyzes the smoke confidence map to determine whether a smoke event occurs in the current image. Therefore, a reliable smoke detection function can be achieved.Type: GrantFiled: May 9, 2022Date of Patent: February 20, 2024Assignee: VIA TECHNOLOGIES, INC.Inventors: Jia-yo Hsu, Wei-Chung Cheng
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Publication number: 20230177938Abstract: The present disclosure discloses a smoke detection system and a smoke detection method. The smoke detection system includes a camera, a storage unit, and a processor. The camera acquires a current image and a previous image. The storage unit stores a plurality of modules. The processor is coupled with the camera and executes the plurality of modules. The processor generates a difference image based on the current image and the previous image. The processor inputs the current image and the difference image to a semantic segmentation model so that the semantic segmentation model outputs a smoke confidence map. The smoke confidence map is generated based on whether a current environment is a dark environment or a bright environment. The processor analyzes the smoke confidence map to determine whether a smoke event occurs in the current image. Therefore, a reliable smoke detection function can be achieved.Type: ApplicationFiled: May 9, 2022Publication date: June 8, 2023Inventors: Jia-yo HSU, Wei-Chung CHENG
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Patent number: 9632239Abstract: A linear light source emits light beams for illuminating a target. The linear light source includes a light guide, and a light-emitting unit. The light guide has a bottom surface, first and second reflecting surfaces extending from opposite side edges of the bottom surface, and a light converging convex surface extending between the first and second reflecting surfaces, curved outward, and having multiple radii of curvature. The light-emitting unit emits light beams that exit through the light converging convex surface to converge at multiple points distributed at distinct positions in a direction perpendicular to a surface of the target, such that the target to be disposed within a range defined by the multiple points is evenly illuminated.Type: GrantFiled: May 5, 2014Date of Patent: April 25, 2017Assignees: Lite-On Electronics (Guangzhou) Limited, Lite-On Technology Corp.Inventors: Jun-Feng Lin, Wei-Chung Cheng
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Patent number: 9470830Abstract: A light-guiding cover includes a light input surface defining a central axis and a light output surface. The light-guiding cover has a reflecting portion formed therein and substantially symmetrical about the central axis. The reflecting portion surrounding the central axis has an outer reflecting surface and an inner reflecting surface. The light input surface is defined into two regions, an inner region and an outer region, by the reflecting portion. The outer reflecting surface of the reflecting portion is arranged away from the central axis, the inner reflecting surface of the reflecting portion is arranged near to the central axis. Thus, the light-guiding cover of the instant disclosure can guide the light beams emanated from a LED to travel in certain optical paths and provide uniformly distributed lighting. Moreover, the instant disclosure also provides an illumination device having the light-guiding cover that can omni-directionally illuminate.Type: GrantFiled: April 1, 2014Date of Patent: October 18, 2016Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, LITE-ON TECHNOLOGY CORPORATIONInventors: Chun-Wei Liang, Wei-Chung Cheng
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Patent number: 9400516Abstract: A voltage converting device includes first and second stage circuits for converting a differential voltage to an output signal that has a magnitude smaller than the differential voltage. The second stage circuit includes input transistors for receiving voltages from the first stage circuit, output transistors for outputting the output signal, and a clamp module to clamp voltages at the input transistors of the second stage circuit.Type: GrantFiled: April 9, 2014Date of Patent: July 26, 2016Assignee: ILI TECHNOLOGY CORPORATIONInventors: Wei-Chung Cheng, Shih-Hsin Hsu, Lun-Kai Chang
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Patent number: 9350235Abstract: A voltage converting device includes first to third voltage converters, each including a capacitor, a pair of charge switches for charging the capacitor, a pair of first output switches for outputting a first output voltage through the capacitor, and a pair of second output switches for outputting a second output voltage through the capacitor. Via timing control of the switches, outputs of the first and second output voltages are substantially continuous and are prevented from floating.Type: GrantFiled: April 30, 2014Date of Patent: May 24, 2016Assignee: ILI TECHNOLOGY CORPORATIONInventors: Wei-Chung Cheng, Ching-Tsao Chen, Chih-Hsiang Chuang
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Publication number: 20140328095Abstract: A voltage converting device includes first to third voltage converters, each including a capacitor, a pair of charge switches for charging the capacitor, a pair of first output switches for outputting a first output voltage through the capacitor, and a pair of second output switches for outputting a second output voltage through the capacitor. Via timing control of the switches, outputs of the first and second output voltages are substantially continuous and are prevented from floating.Type: ApplicationFiled: April 30, 2014Publication date: November 6, 2014Applicant: ILI TECHNOLOGY CORPORATIONInventors: Wei-Chung CHENG, Ching-Tsao Chen, Chih-Hsiang Chuang
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Publication number: 20140306684Abstract: A voltage converting device includes first and second stage circuits for converting a differential voltage to an output signal that has a magnitude smaller than the differential voltage. The second stage circuit includes input transistors for receiving voltages from the first stage circuit, output transistors for outputting the output signal, and a clamp module to clamp voltages at the input transistors of the second stage circuit.Type: ApplicationFiled: April 9, 2014Publication date: October 16, 2014Applicant: ILI TECHNOLOGY CORPORATIONInventors: Wei-Chung Cheng, Shih-Hsin Hsu, Lun-Kai Chang
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Publication number: 20140241002Abstract: A linear light source emits light beams for illuminating a target. The linear light source includes a light guide, and a light-emitting unit. The light guide has a bottom surface, first and second reflecting surfaces extending from opposite side edges of the bottom surface, and a light converging convex surface extending between the first and second reflecting surfaces, curved outward, and having multiple radii of curvature. The light-emitting unit emits light beams that exit through the light converging convex surface to converge at multiple points distributed at distinct positions in a direction perpendicular to a surface of the target, such that the target to be disposed within a range defined by the multiple points is evenly illuminated.Type: ApplicationFiled: May 5, 2014Publication date: August 28, 2014Applicants: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, LITE-ON TECHNOLOGY CORP.Inventors: JUN-FENG LIN, WEI-CHUNG CHENG
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Publication number: 20140211481Abstract: A light-guiding cover includes a light input surface defining a central axis and a light output surface. The light-guiding cover has a reflecting portion formed therein and substantially symmetrical about the central axis. The reflecting portion surrounding the central axis has an outer reflecting surface and an inner reflecting surface. The light input surface is defined into two regions, an inner region and an outer region, by the reflecting portion. The outer reflecting surface of the reflecting portion is arranged away from the central axis, the inner reflecting surface of the reflecting portion is arranged near to the central axis. Thus, the light-guiding cover of the instant disclosure can guide the light beams emanated from a LED to travel in certain optical paths and provide uniformly distributed lighting. Moreover, the instant disclosure also provides an illumination device having the light-guiding cover that can omni-directionally illuminate.Type: ApplicationFiled: April 1, 2014Publication date: July 31, 2014Applicant: LITE-ON TECHNOLOGY CORPORATIONInventors: CHUN-WEI LIANG, WEI-CHUNG CHENG
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Patent number: 8183781Abstract: A fluorescent lamp includes at least two lighting elements, which emit lights with different color temperatures. In addition, the lighting illuminations of the lighting elements can be controlled by independent driving devices. Thus, the user can adjust the color temperature of the light emitted from the fluorescent lamp.Type: GrantFiled: September 29, 2008Date of Patent: May 22, 2012Assignee: Delta Electronic, Inc.Inventors: Shih-Hsien Lin, Maw-Chuan Lin, Kung-Tung Pan, Mei-Huei Huang, Wei-Chung Cheng
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Patent number: 8159473Abstract: The present invention relates to a method for detecting touch points and a touch panel using the same. The method includes the steps of: providing a resistive pressure-sensing matrix includes M X-axis sensing lines and N Y-axis sensing lines, wherein the ith X-axis sensing line and the jth Y-axis sensing line are short-circuited when a preset range covering an overlapped region between the ith X-axis sensing line and the jth Y-axis sensing line is pressed; applying a scanning voltage to the pth Y-axis sensing line in a pth scanning period; detecting the M X-axis sensing lines to judge whether the scanning voltage is detected; and determining a touch coordinate as (q, p) when the qth X-axis sensing line receives the scanning voltage in the pth scanning period, wherein M, N, i, p and q are positive integers, 0<i, q<=M and 0<p<=N.Type: GrantFiled: February 25, 2009Date of Patent: April 17, 2012Assignee: Orise Technology Co., Ltd.Inventors: Wei-Chung Cheng, Cheng-Chin Liu
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Publication number: 20100117982Abstract: The present invention relates to a method for detecting touch points and a touch panel using the same. The method includes the steps of: providing a resistive pressure-sensing matrix includes M X-axis sensing lines and N Y-axis sensing lines, wherein the ith X-axis sensing line and the jth Y-axis sensing line are short-circuited when a preset range covering an overlapped region between the ith X-axis sensing line and the jth Y-axis sensing line is pressed; applying a scanning voltage to the pth Y-axis sensing line in a pth scanning period; detecting the M X-axis sensing lines to judge whether the scanning voltage is detected; and determining a touch coordinate as (q, p) when the qth X-axis sensing line receives the scanning voltage in the pth scanning period, wherein M, N, i, p and q are positive integers, 0<i, q<=M and 0<p<=N.Type: ApplicationFiled: February 25, 2009Publication date: May 13, 2010Inventors: Wei Chung CHENG, Cheng-Chin Liu
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Publication number: 20100001642Abstract: A fluorescent lamp includes at least two lighting elements, which emit lights with different color temperatures. In addition, the lighting illuminations of the lighting elements can be controlled by independent driving devices. Thus, the user can adjust the color temperature of the light emitted from the fluorescent lamp.Type: ApplicationFiled: September 29, 2008Publication date: January 7, 2010Inventors: Shih-Hsien Lin, Maw-Chuan Lin, Kung-Tung Pan, Mei-Huei Huang, Wei-Chung Cheng
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Publication number: 20070008273Abstract: The present invention provides a source driver used in an LCD, especially a big LCD, so that energy consumed can be saved together with small amplitude and reduced electromagnetic interference.Type: ApplicationFiled: February 22, 2006Publication date: January 11, 2007Inventors: Yi-chan Chen, Wei-Chung Cheng, San-Yueh Huang
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Publication number: 20060290639Abstract: The present invention is applied to a liquid crystal display (LCD) having a big size so that the LCD can be used with saved energy, small amplitude and low electromagnetic interference.Type: ApplicationFiled: February 22, 2006Publication date: December 28, 2006Inventors: Yi-Chan Chen, Wei-Chung Cheng, San-Yueh Huang
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Publication number: 20060214894Abstract: In a power wiring structure and method for a plurality of driver chips on a display panel, the display panel has a panel routing line thereon, each of the driver chips has a power line therewithin, and the power line is connected in parallel to the panel routing line. Due to the parallel connection of the power line and the panel routing line, the power wiring structure has an extremely low resistance, and thereby the power consumption resulted from the power wiring structure is very low.Type: ApplicationFiled: July 12, 2005Publication date: September 28, 2006Inventors: Wei-Chung Cheng, Yi-chan Chen