Patents by Inventor Chih-Wei Tsai
Chih-Wei Tsai 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: 20250089140Abstract: An LED driving apparatus, a microcontroller, and a control method for an LED module are provided. The LED driving apparatus includes a power supply module, a switch module, and a control module. The power supply module is configured to supply power to the LED module, in which the power supply module determines whether to trigger an overcurrent protection based on whether an output current exceeds a threshold current. The control module is configured to receive an overcurrent detection signal to control a conduction state of the switch module, so as to affect the current amount of the LED module. When the overcurrent detection signal indicates the output current exceeds the threshold current, the control module outputs a first control signal based on the overcurrent detection signal to control the switch module, to prevent the overcurrent protection from being triggered.Type: ApplicationFiled: January 8, 2024Publication date: March 13, 2025Inventors: Chun-Yi WU, Lian-Cheng TSAI, Chih-Wei TSAI
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Patent number: 12001556Abstract: An anti-virus chip includes a first connection terminal, a second connection terminal, a detection unit and a processing unit. The first connection terminal and the second connection terminal are respectively coupled to a connection port and a system circuit of an electronic device. The detection unit detects whether the connection port is connected to an external device via the first connection terminal. When the detection unit detects that the connection port is connected to the external device, the processing unit performs a virus-scan program on the external device to determine whether a virus exists in the external device. When determining that a virus does not exist in the external device, the processing unit establishes a first transmission path between the first connection terminal and the second connection terminal. When determining that a virus exists in the external device, the processing unit does not establish the first transmission path.Type: GrantFiled: April 18, 2023Date of Patent: June 4, 2024Assignee: NUVOTON TECHNOLOGY CORPORATIONInventors: Ming-Che Hung, Chia-Ching Lu, Shih-Hsuan Yen, Chih-Wei Tsai
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Publication number: 20230352974Abstract: An electronic device including a power supply device and a load is provided. The power supply device includes an energy harvest circuit, a power management circuit, and an energy storage element. The energy harvest circuit receives a wireless signal and harvests energy from the wireless signal to generate a first output voltage. The power management circuit processes the first output voltage to generate a second output voltage. The energy storage element is charged by the second output voltage to provide an operation voltage. The load operates according to the operation voltage.Type: ApplicationFiled: December 30, 2022Publication date: November 2, 2023Inventors: Cheng-Chih WANG, Chih-Wei TSAI, Tzu-Lan SHEN, Yan-Chin HUANG
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Publication number: 20230252151Abstract: An anti-virus chip includes a first connection terminal, a second connection terminal, a detection unit and a processing unit. The first connection terminal and the second connection terminal are respectively coupled to a connection port and a system circuit of an electronic device. The detection unit detects whether the connection port is connected to an external device via the first connection terminal. When the detection unit detects that the connection port is connected to the external device, the processing unit performs a virus-scan program on the external device to determine whether a virus exists in the external device. When determining that a virus does not exist in the external device, the processing unit establishes a first transmission path between the first connection terminal and the second connection terminal. When determining that a virus exists in the external device, the processing unit does not establish the first transmission path.Type: ApplicationFiled: April 18, 2023Publication date: August 10, 2023Inventors: Ming-Che HUNG, Chia-Ching LU, Shih-Hsuan YEN, Chih-Wei TSAI
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Patent number: 11663335Abstract: An anti-virus chip includes a first connection terminal, a second connection terminal, a detection unit and a processing unit. The first connection terminal and the second connection terminal are respectively coupled to a connection port and a system circuit of an electronic device. The detection unit detects whether the connection port is connected to an external device via the first connection terminal. When the detection unit detects that the connection port is connected to the external device, the processing unit performs a virus-scan program on the external device to determine whether a virus exists in the external device. When determining that a virus does not exist in the external device, the processing unit establishes a first transmission path between the first connection terminal and the second connection terminal. When determining that a virus exists in the external device, the processing unit does not establish the first transmission path.Type: GrantFiled: March 3, 2021Date of Patent: May 30, 2023Assignee: NUVOTON TECHNOLOGY CORPORATIONInventors: Ming-Che Hung, Chia-Ching Lu, Shih-Hsuan Yen, Chih-Wei Tsai
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Publication number: 20230087397Abstract: A personnel tracking and disinfecting system is applied to a place and includes recognition devices, at least one disinfecting device, storage and central controller. The central controller is configured to: control the recognition devices to recognize the person in the place; determine the position of the person in the place by cooperating with the recognition devices; activate the disinfecting device in the main area to disinfect the person in the main area, generate a disinfecting record based on recognition result generated by the recognition device in the main area, and store the disinfecting record in the storage; and determine whether the person in the extended area has the disinfecting record based on recognition result generated by the recognition device in the extended area.Type: ApplicationFiled: December 27, 2021Publication date: March 23, 2023Inventors: Chia-Jen CHENG, Chih-Wei TSAI, Chih-Hsien WANG
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Publication number: 20210334376Abstract: An anti-virus chip includes a first connection terminal, a second connection terminal, a detection unit and a processing unit. The first connection terminal and the second connection terminal are respectively coupled to a connection port and a system circuit of an electronic device. The detection unit detects whether the connection port is connected to an external device via the first connection terminal. When the detection unit detects that the connection port is connected to the external device, the processing unit performs a virus-scan program on the external device to determine whether a virus exists in the external device. When determining that a virus does not exist in the external device, the processing unit establishes a first transmission path between the first connection terminal and the second connection terminal. When determining that a virus exists in the external device, the processing unit does not establish the first transmission path.Type: ApplicationFiled: March 3, 2021Publication date: October 28, 2021Inventors: Ming-Che HUNG, Chia-Ching LU, Shih-Hsuan YEN, Chih-Wei TSAI
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Patent number: 10978122Abstract: A memory includes (n?1) non-volatile cells, (n?1) bit lines and a current driving circuit. Each of the (n?1) non-volatile cells includes a first terminal and a second terminal. An ith bit line of the (n?1) bit lines is coupled to a first terminal of an ith non-volatile cell of the (n?1) non-volatile cells. The current driving circuit includes n first transistors coupled to the (n?1) non-volatile cells.Type: GrantFiled: February 21, 2020Date of Patent: April 13, 2021Assignee: UNITED MICROELECTRONICS CORP.Inventors: Chun-Yen Tseng, Yu-Tse Kuo, Chang-Hung Chen, Shu-Ru Wang, Ya-Lan Chiou, Chun-Hsien Huang, Chih-Wei Tsai, Hsin-Chih Yu, Yi-Ting Wu, Cheng-Tung Huang, Jen-Yu Wang, Jhen-Siang Wu, Po-Chun Yang, Yung-Ching Hsieh, Jian-Jhong Chen, Bo-Chang Li
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Publication number: 20200395073Abstract: A ternary content addressable memory unit includes a first inverter, a second inverter, a third inverter, a fourth inverter, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor. The first inverter includes an input terminal, and an output terminal coupled to a first node. The second inverter includes an input terminal coupled to the first node and an output terminal coupled to the input terminal of the first inverter. The third inverter includes an input terminal coupled to a second node and an output terminal. The fourth inverter includes an input terminal coupled to the output terminal of the third inverter and an output terminal coupled to the second node.Type: ApplicationFiled: July 4, 2019Publication date: December 17, 2020Inventors: Chun-Yen Tseng, Ching-Cheng Lung, Yu-Tse Kuo, Chun-Hsien Huang, Chih-Wei Tsai, Hsin-Chih Yu, Shu-Ru Wang
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Patent number: 10861549Abstract: A ternary content addressable memory unit includes a first inverter, a second inverter, a third inverter, a fourth inverter, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor. The first inverter includes an input terminal, and an output terminal coupled to a first node. The second inverter includes an input terminal coupled to the first node and an output terminal coupled to the input terminal of the first inverter. The third inverter includes an input terminal coupled to a second node and an output terminal. The fourth inverter includes an input terminal coupled to the output terminal of the third inverter and an output terminal coupled to the second node.Type: GrantFiled: July 4, 2019Date of Patent: December 8, 2020Assignee: UNITED MICROELECTRONICS CORP.Inventors: Chun-Yen Tseng, Ching-Cheng Lung, Yu-Tse Kuo, Chun-Hsien Huang, Chih-Wei Tsai, Hsin-Chih Yu, Shu-Ru Wang
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Patent number: 10762951Abstract: An SRAM device includes a memory cell and a keeper circuit. The memory cell is formed in an active area and coupled to a first bit line and a second bit line. The keeper circuit is formed in the active area and configured to charge the second bit line when the first bit line is at a first voltage level and the second bit line is at a second voltage level or charge the first bit line when the second bit line is at the first voltage level and the first bit line is at the second voltage level, wherein the second voltage level is higher than the first voltage level.Type: GrantFiled: June 28, 2019Date of Patent: September 1, 2020Assignee: UNITED MICROELECTRONICS CORP.Inventors: Chih-Wei Tsai, Tsan-Tang Chen, Chung-Cheng Tsai, Yen-Hsueh Huang, Chang-Ting Lo, Chun-Yen Tseng, Yu-Tse Kuo
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Patent number: 10640635Abstract: A resin composition and an application thereof are provided, wherein the resin composition includes a thermoplastic elastomer, a styrene-based resin, a processing oil, and a filler. Based on 100 wt % of the resin composition, the content of the thermoplastic elastomer is 20 wt % to 55 wt %, the content of the styrene-based resin is 25 wt % to 55 wt %, the content of the processing oil is 6 wt % to 18 wt %, and the content of the filler is 5 wt % to 20 wt %. A printing material made by the resin composition has good adhesion with a substrate.Type: GrantFiled: May 24, 2018Date of Patent: May 5, 2020Assignee: Chi Mei CorporationInventors: Kuan-Lin Hsieh, Chih-Wei Tsai
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Patent number: 10429206Abstract: A counting device and a pedometer device is described. The counting device includes: a piezoelectric sensor generating a voltage signal when pressed; a rectifier receiving the voltage signal and rectifying the voltage signal to produce a trigger signal; a non-volatile counter receiving the trigger signal, and including a plurality of non-volatile D flip-flops counting according to the trigger signal and storing count data; a processing module reading the count data and using the count data to generate a counting value; and a wireless communication module transmitting the counting value to an external device. The counting device is powered with electrical energy of the voltage signal generated by the piezoelectric sensor.Type: GrantFiled: August 8, 2017Date of Patent: October 1, 2019Assignee: NUVOTON TECHNOLOGY CORPORATIONInventors: Hsi-Jung Tsai, Cheng-Chih Wang, Chih-Wei Tsai
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Publication number: 20190010321Abstract: A resin composition and an application thereof are provided, wherein the resin composition includes a thermoplastic elastomer, a styrene-based resin, a processing oil, and a filler. Based on 100 wt % of the resin composition, the content of the thermoplastic elastomer is 20 wt % to 55 wt %, the content of the styrene-based resin is 25 wt % to 55 wt %, the content of the processing oil is 6 wt % to 18 wt %, and the content of the filler is 5 wt % to 20 wt %. A printing material made by the resin composition has good adhesion with a substrate.Type: ApplicationFiled: May 24, 2018Publication date: January 10, 2019Applicant: Chi Mei CorporationInventors: Kuan-Lin Hsieh, Chih-Wei Tsai
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Patent number: 10020049Abstract: The present invention provides a six transistor static random-access memory (6T-SRAM) cell, the 6T-SRAM cell includes a first inverter comprising a first pull-up transistor and a first pull-down transistor, and a first storage node, a second inverter comprising a second pull-up transistor, a second pull-down transistor, and a second storage node, wherein the first storage node is coupled to gates of the second pull-up transistor and the second pull-down transistor, a switch transistor configured to couple the second storage node to gates of the first pull-up transistor and the first pull-down transistor, and an access transistor coupled to gates of the first pull-up transistor and the first pull-down transistor.Type: GrantFiled: January 24, 2017Date of Patent: July 10, 2018Assignee: UNITED MICROELECTRONICS CORP.Inventors: Chun-Yen Tseng, Ching-Cheng Lung, Yu-Tse Kuo, Chun-Hsien Huang, Chih-Wei Tsai
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Publication number: 20180190344Abstract: The present invention provides a six transistor static random-access memory (6T-SRAM) cell, the 6T-SRAM cell includes a first inverter comprising a first pull-up transistor and a first pull-down transistor, and a first storage node, a second inverter comprising a second pull-up transistor, a second pull-down transistor, and a second storage node, wherein the first storage node is coupled to gates of the second pull-up transistor and the second pull-down transistor, a switch transistor configured to couple the second storage node to gates of the first pull-up transistor and the first pull-down transistor, and an access transistor coupled to gates of the first pull-up transistor and the first pull-down transistor.Type: ApplicationFiled: January 24, 2017Publication date: July 5, 2018Inventors: Chun-Yen Tseng, Ching-Cheng Lung, Yu-Tse Kuo, Chun-Hsien Huang, Chih-Wei Tsai
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Publication number: 20180058880Abstract: A counting device and a pedometer device is described. The counting device includes: a piezoelectric sensor generating a voltage signal when pressed; a rectifier receiving the voltage signal and rectifying the voltage signal to produce a trigger signal; a non-volatile counter receiving the trigger signal, and including a plurality of non-volatile D flip-flops counting according to the trigger signal and storing count data; a processing module reading the count data and using the count data to generate a counting value; and a wireless communication module transmitting the counting value to an external device. The counting device is powered with electrical energy of the voltage signal generated by the piezoelectric sensor.Type: ApplicationFiled: August 8, 2017Publication date: March 1, 2018Inventors: HSI-JUNG TSAI, CHENG-CHIH WANG, CHIH-WEI TSAI
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Publication number: 20180011227Abstract: The instant disclosure provides a focusing method and a focusing apparatus. The focusing apparatus includes a lens device, an image capture device, a focal length adjustment device, and a control device. The lens device includes a liquid lens module and an optical lens module. The optical lens module is disposed corresponding to the liquid lens module. The image capturing device is disposed corresponding to the lens device. The focal length adjustment device is disposed on the optical lens module or the image capture device to drive the optical lens module or the image capture device and change the focal length of the optical lens module. The control device electrically connects the lens device, the image capture device, and the focal length adjustment device to control the focal length of the liquid lens module and the optical lens module.Type: ApplicationFiled: July 6, 2016Publication date: January 11, 2018Inventor: CHIH-WEI TSAI
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Publication number: 20170064184Abstract: A focusing system and focusing method are provided. The focusing method includes the steps of: adjusting a focal length of a liquid lens unit of an auxiliary lens module to scan a focus distance of the auxiliary lens module, wherein the auxiliary lens module includes a plurality of focus sections, wherein the focus sections are focally scanned by the liquid lens unit; analyzing a plurality of image information respectively corresponding to the focus sections to determine a preferred focus section in which a sharpest image is captured; transmitting an information of the preferred focus section in which the sharpest image is captured to a main lens module; and adjusting a focus of the main lens module according to the information of the preferred focus section so that the main lens module is automatically focused within the preferred focus section.Type: ApplicationFiled: August 24, 2015Publication date: March 2, 2017Inventor: CHIH-WEI TSAI
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Publication number: 20170038504Abstract: The instant disclosure provides a close-up shots module which corresponds to an image capture module of an electronic device to capture an object image. The close-up shots module has a liquid lens unit and a control unit. The control unit is electrically connected to the liquid lens unit. Wherein the control unit on the basis of a signal from the image capture module adjusts the focal length of the liquid lens unit. The instant disclosure also provides a close-up shots system.Type: ApplicationFiled: August 5, 2015Publication date: February 9, 2017Inventor: CHIH-WEI TSAI