Patents by Inventor Ming-Tsung Ho
Ming-Tsung Ho 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: 20240128874Abstract: An efficiency tracking method of a controller applied to a flyback power converter includes before the controller soft starts, an original frequency variation curve setting voltage generated by the controller outputting an original frequency variation curve setting detection current to an original frequency variation curve setting detection resistor determining a frequency variation curve of the flyback power converter, and utilizing adjustment of resistance of the original frequency variation curve setting detection resistor to achieve efficiency optimization. Therefore, the controller controls an output voltage of the flyback power converter and tracks a maximum power point of the flyback power converter according to the efficiency tracking method to achieve efficiency optimization.Type: ApplicationFiled: December 15, 2023Publication date: April 18, 2024Applicant: Leadtrend Technology Corp.Inventors: Ming-Chang Tsou, Cheng-Tsung Ho, Yuan-Chih Lan
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Patent number: 11953052Abstract: A fastener is adapted for assembling a first housing to a second housing. The first housing is provided with a protruding portion and a buckling portion, and the second housing has a first surface, a second surface, and a through hole. The fastener includes a first portion, at least one connecting portion, at least two elastic portions, and a second portion. The first portion movably abuts against the first surface and has a first opening. The connecting portion is accommodated in the through hole. One end of the connecting portion is connected to the first portion. The connecting portion is spaced apart from an inner edge of the second housing by a gap. The two elastic portions inclinedly extend into the first opening. The second portion movably abuts against the second surface and is disposed at the another end of the connecting portion.Type: GrantFiled: June 17, 2021Date of Patent: April 9, 2024Assignee: PEGATRON CORPORATIONInventors: Jian-Hua Chen, Po-Tsung Shih, Yu-Wei Lin, Ming-Hua Ho, Chih-Hao Wu
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Patent number: 11048314Abstract: A system loading detecting device and method are provided. The system loading detecting device includes a processing device, a detection circuit and a controller. The detection circuit detects whether an adapter is unplugged from the system loading detecting device to generate a detection signal. When the adapter is unplugged from the system loading detecting device, the detection signal is changed from a first level to a second level. The controller is coupled to the detection circuit and the processing device. In addition, the controller receives the detection signal and determines whether to trigger the generation of a throttling signal according to the detection signal to enable a throttling mechanism to reduce system loading.Type: GrantFiled: May 13, 2019Date of Patent: June 29, 2021Assignee: QUANTA COMPUTER INC.Inventors: Ming-Tsung Ho, Chun-Jie Yu, Yu-An Huang
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Publication number: 20200142467Abstract: A system loading detecting device and method are provided. The system loading detecting device includes a processing device, a detection circuit and a controller. The detection circuit detects whether an adapter is unplugged from the system loading detecting device to generate a detection signal. When the adapter is unplugged from the system loading detecting device, the detection signal is changed from a first level to a second level. The controller is coupled to the detection circuit and the processing device. In addition, the controller receives the detection signal and determines whether to trigger the generation of a throttling signal according to the detection signal to enable a throttling mechanism to reduce system loading.Type: ApplicationFiled: May 13, 2019Publication date: May 7, 2020Inventors: Ming-Tsung HO, Chun-Jie YU, Yu-An HUANG
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Patent number: 9280196Abstract: A power management method for a computer system is provided. The power management method includes: obtaining a system power consumption; determining whether the system power consumption is greater than a first safe operating point; when the system power consumption is greater than the first safe operating point, controlling a CPU and a graphics processing unit (GPU) to activate a frequency reduction mechanism according to a first adjustment sequence; when the system power consumption is not greater than the first safe operating point, determining whether the system power consumption is smaller than a second safe operating point; and when the system power consumption is smaller than the second safe operating point, controlling the CPU and the GPU to deactivate the frequency reduction mechanism according to a second adjustment sequence. The second adjustment sequence is reverse to the first adjustment sequence.Type: GrantFiled: July 31, 2013Date of Patent: March 8, 2016Assignee: QUANTA COMPUTER INC.Inventors: Chun-Jie Yu, Yu-Hui Chen, Sheng-Wen Wu, Ming-Tsung Ho
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Publication number: 20140380073Abstract: A power management method for a computer system is provided. The power management method includes: obtaining a system power consumption; determining whether the system power consumption is greater than a first safe operating point; when the system power consumption is greater than the first safe operating point, controlling a CPU and a graphics processing unit (GPU) to activate a frequency reduction mechanism according to a first adjustment sequence; when the system power consumption is not greater than the first safe operating point, determining whether the system power consumption is smaller than a second safe operating point; and when the system power consumption is smaller than the second safe operating point, controlling the CPU and the GPU to deactivate the frequency reduction mechanism according to a second adjustment sequence. The second adjustment sequence is reverse to the first adjustment sequence.Type: ApplicationFiled: July 31, 2013Publication date: December 25, 2014Applicant: QUANTA COMPUTER INC.Inventors: Chun-Jie YU, Yu-Hui CHEN, Sheng-Wen WU, Ming-Tsung HO
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Patent number: 8193725Abstract: A backlight module control system includes a plurality of backlight sub-modules, a control signals output unit, a voltage converter and a plurality of current control units. The control signals output circuit is for providing a voltage control signal, a current control signal and a plurality of PWM signals; the voltage converter is coupled to the control signals output circuit and the backlight sub-modules, and is for outputting an output voltage to the backlight sub-modules according to the voltage control signal; the current control units are coupled to the backlight sub-modules, respectively, and each current control unit is for determining a current of its corresponding backlight sub-module according to the current control signal, and each current control unit is further utilized for determining whether its corresponding backlight sub-module is enabled or not according to its corresponding PWM signal. In addition, only one backlight module is enabled at a same time.Type: GrantFiled: April 16, 2009Date of Patent: June 5, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Ke-Horng Chen, Chun-Yu Hsieh, Chia-Lin Liu, Chi-Neng Mo, Hun-Wei Chen, Ming-Tsung Ho
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Publication number: 20100264847Abstract: A backlight module control system includes a plurality of backlight sub-modules, a control signals output unit, a voltage converter and a plurality of current control units. The control signals output circuit is for providing a voltage control signal, a current control signal and a plurality of PWM signals; the voltage converter is coupled to the control signals output circuit and the backlight sub-modules, and is for outputting an output voltage to the backlight sub-modules according to the voltage control signal; the current control units are coupled to the backlight sub-modules, respectively, and each current control unit is for determining a current of its corresponding backlight sub-module according to the current control signal, and each current control unit is further utilized for determining whether its corresponding backlight sub-module is enabled or not according to its corresponding PWM signal. In addition, only one backlight module is enabled at a same time.Type: ApplicationFiled: April 16, 2009Publication date: October 21, 2010Inventors: Ke-Horng Chen, Chun-Yu Hsieh, Chia-Lin Liu, Chi-Neng Mo, Hun-Wei Chen, Ming-Tsung Ho
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Patent number: 7456908Abstract: A convergence calibration method for a display includes generating a test pattern of similar width with respect to a sensor and expanding the area of the test pattern from one side of the sensor until the whole sensor is illuminated. During the process of expanding the test pattern, the sensor continues to measure signals from the test patterns. Based on the maximum energy measured by the sensor, a digital judgment is performed for calculating convergence parameters.Type: GrantFiled: September 6, 2005Date of Patent: November 25, 2008Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Wen-Chih Tai, Ming-Tsung Ho, Chia-Lin Liu, Chi-Neng Mo
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Publication number: 20070097329Abstract: A rear projection system includes a partially transmissive reflector, an image source installed on one side of the reflector for projecting an image to the reflector, a screen for receiving the image projected from the image source and reflected from the reflector so as to display the image, at least one light sensor installed on the other side of the reflector for sensing light of the image projected from the image source to the reflector and passing through the reflector, and a control module coupled to the light sensor for controlling the image source to project a next image according to the sensing result of the light sensor.Type: ApplicationFiled: October 27, 2005Publication date: May 3, 2007Inventors: Ming-Tsung Ho, Kuo-Yen Lai, Chia-Lin Liu, Chi-Neng Mo, Shih-Min Wu
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Publication number: 20070052870Abstract: A convergence calibration method for a display includes generating a test pattern of similar width with respect to a sensor and expanding the area of the test pattern from one side of the sensor until the whole sensor is illuminated. During the process of expanding the test pattern, the sensor continues to measure signals from the test patterns. Based on the maximum energy measured by the sensor, a digital judgment is performed for calculating convergence parameters.Type: ApplicationFiled: September 6, 2005Publication date: March 8, 2007Inventors: Wen-Chih Tai, Ming-Tsung Ho, Chia-Lin Liu, Chi-Neng Mo
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Patent number: D624535Type: GrantFiled: December 29, 2009Date of Patent: September 28, 2010Assignee: Wistron CorporationInventors: Chu-Chia Tsai, Yi-Wei Tao, Ming-Tsung Ho, Chi-Sung Chang, Sung-Yu Hsieh