Patents by Inventor Sheng-Kai Chang
Sheng-Kai 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: 20240154021Abstract: A p-GaN high-electron-mobility transistor (HEMT) includes a buffer layer stacked on a substrate, a channel layer stacked on the buffer layer, a supply layer stacked on the channel layer, a doped layer stacked on the supply layer, and a hydrogen barrier layer covering the supply layer and the doped layer. A source and a drain are electrically connected to the channel layer and the supply layer, respectively. A gate is located on the doped layer. The hydrogen barrier layer is doped with fluorine.Type: ApplicationFiled: December 29, 2022Publication date: May 9, 2024Inventors: TING-CHANG CHANG, Wei-Chen Huang, Shih-Kai Lin, Yong-Ci Zhang, Sheng-Yao Chou, Chung-Wei Wu, Po-Hsun Chen
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Publication number: 20230420429Abstract: A semiconductor structure may include an interposer including on-interposer bump structures, at least one semiconductor die bonded to a first subset of the on-interposer bump structures through first solder material portions, at least one spacer die bonded to a second subset of the on-interposer bump structures through second solder material portions, and a molding compound die frame laterally surrounding each of the at least one semiconductor die and the at least one spacer die. Each of the at least one semiconductor die includes a respective set of transistors and a respective set of metal interconnect structures. Each of the at least one spacer die is free from any transistor therein.Type: ApplicationFiled: June 24, 2022Publication date: December 28, 2023Inventors: Sheng-Kai Chang, Leo Li, Chung-Hsien Hun, Lieh-Chuan Chen, Chien-Li Kuo
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Publication number: 20230337146Abstract: A Wi-Fi power-adjusting method is provided. The Wi-Fi power-adjusting method is applied to a Wi-Fi power-adjusting device. The Wi-Fi power-adjusting method includes the step of determining whether the Wi-Fi power-adjusting device is in a vehicle. When the Wi-Fi power-adjusting device is in the vehicle, the method adjusts the Wi-Fi Tx power of the Wi-Fi power-adjusting device based on a set value corresponding to the vehicle. The set value corresponds to the first power coverage of the Wi-Fi Tx power.Type: ApplicationFiled: April 14, 2022Publication date: October 19, 2023Inventors: Wang-Hsin KUO, Sheng-Kai CHANG
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Patent number: 11736998Abstract: A communications apparatus and associated method communicating with at least one cellular network includes a radio transceiver and a processor. The communications apparatus includes a radio transceiver, capable of transmitting or receiving wireless radio frequency signals to or from a cellular network; and a processor. The processor is configured to: receive an incoming call request message that will trigger a Circuit Switch Fall Back (CSFB) procedure or a Evolved Packet System Fall Back (EPS FB) procedure from the cellular network via the radio transceiver, query a user to accept or reject the incoming call request before triggering the CSFB procedure or the EPS FB procedure, and determine whether to trigger the CSFB procedure or the EPS FB procedure based on a response to the query from the user.Type: GrantFiled: September 3, 2021Date of Patent: August 22, 2023Assignee: MEDIATEK INC.Inventors: Guan-Jie Huang, Tzu-Wen Chang, Kuan-Wei Chen, Yu-Hua Huang, Teng Ma, Sheng-Kai Chang
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Publication number: 20230085153Abstract: The present invention provides a controller of a tethering device, wherein the controller includes a tethering manager and a cellular configuration manager. The tethering manager is configured to generating tethering parameters of at least one network interface of the tethering device, wherein the at least one network interface of the tethering device is used to communicate with an electronic device, and the electronic device shares a cellular network of the tethering device via the at least one network interface. The cellular configuration manager is configured to determine a first cellular mode according to the tethering parameters of at least one network interface, to control a cellular modem to use the first cellular mode.Type: ApplicationFiled: September 5, 2022Publication date: March 16, 2023Applicant: MEDIATEK INC.Inventors: Sheng-Kai Chang, Wang-Hsin Kuo
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Publication number: 20230064722Abstract: The present invention provides a control method of a tethering device, wherein the control method includes the steps of: receiving cellular information of the tethering device, and determining a first tethering mode according to the cellular information; and using the first tethering mode to configure at least one interface of the tethering device, wherein the at least one interface of the tethering device is used to communicate with an electronic device, and the electronic device shares a cellular network of the tethering device via the at least one interface.Type: ApplicationFiled: July 20, 2022Publication date: March 2, 2023Applicant: MEDIATEK INC.Inventors: Sheng-Kai Chang, Wang-Hsin Kuo
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Patent number: 11300880Abstract: A coating system includes supporting pins, a suction plane, and a calibrating disk. The suction plane is located between the supporting pins, and the calibrating disk is configured to dispose on the supporting pins or the suction plane. The calibrating disk includes a round top surface and a round bottom surface being opposite to the round top surface. The round bottom surface has a round plane and a dependable wall surrounding the round plane, and an edge of the round plane and an edge of the round bottom surface are concentric. The dependable wall is configured to limited horizontal movement of the supporting pins, and the round plane is configured to cover the suction plane. A calibration method of the coating system is also provided.Type: GrantFiled: December 9, 2019Date of Patent: April 12, 2022Assignee: NANYA TECHNOLOGY CORPORATIONInventor: Sheng-Kai Chang
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Publication number: 20210400550Abstract: A communications apparatus and associated method communicating with at least one cellular network includes a radio transceiver and a processor. The communications apparatus includes a a radio transceiver, capable of transmitting or receiving wireless radio frequency signals to or from a cellular network; and a processor. The processor is configured to: receive an incoming call request message that will trigger a Circuit Switch Fall Back (CSFB) procedure or a Evolved Packet System Fall Back (EPS FB) procedure from the cellular network via the radio transceiver, query a user to accept or reject the incoming call request before triggering the CSFB procedure or the EPS FB procedure, and determine whether to trigger the CSFB procedure or the EPS FB procedure based on a response to the query from the user.Type: ApplicationFiled: September 3, 2021Publication date: December 23, 2021Inventors: Guan-Jie HUANG, Tzu-Wen CHANG, Kuan-Wei CHEN, Yu-Hua HUANG, Teng MA, Sheng-Kai CHANG
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Patent number: 11140593Abstract: A communications apparatus communicating with at least one cellular network includes a radio transceiver and a processor. The radio transceiver is capable of transmitting or receiving wireless radio frequency signals to or from an air interface in the cellular network. The processor is configured to determine whether an inter-RAT change will be triggered in a subsequent procedure when the communications apparatus is in a connected mode. When the processor determines that an inter-RAT change procedure will be triggered, the processor is configured to selectively perform a predetermined procedure instead of the subsequent procedure to avoid the inter-RAT change.Type: GrantFiled: July 17, 2019Date of Patent: October 5, 2021Assignee: MEDIATEK INC.Inventors: Guan-Jie Huang, Tzu-Wen Chang, Kuan-Wei Chen, Yu-Hua Huang, Teng Ma, Sheng-Kai Chang
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Patent number: 11129239Abstract: The wireless communication device includes one or more wireless transceivers and a controller. The one or more wireless transceivers detect(s) one or more first frequency bands of one or more cellular networks, and detect(s) one or more second frequency bands of one or more non-cellular networks. The controller selects one of the first frequency bands and one of the second frequency bands, which do not overlap, and assigns the selected first frequency band to one of the wireless transceivers, thereby enabling one of the wireless transceivers to camp on a cell on the selected first frequency band. Also, the controller assigns the selected second frequency band to one of the wireless transceivers, thereby enabling one of the wireless transceivers to connect to one of the non-cellular networks on the selected second frequency band.Type: GrantFiled: February 24, 2020Date of Patent: September 21, 2021Assignee: MEDIATEK INC.Inventors: Wei-Lun Liu, Sheng-Kai Chang, I-Ching Hsieh, Yen-Chih Yang, Teng-Wei Huang, Tzu-Shiang Hsu, Tzu-Yu Lee, Tsung-Yueh Chiang
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Patent number: 11076450Abstract: The invention provides method and associated user equipment for improving versatility of a cellular network in a network system. The network system may have a packet core which may include a security gateway for facilitating an unlicensed network to interwork with the packet core. The method may include: by a user equipment, accessing a multimedia subsystem via the security gateway over the cellular network, instead of the unlicensed network.Type: GrantFiled: June 10, 2019Date of Patent: July 27, 2021Assignee: MEDIATEK INC.Inventors: Sheng-Kai Chang, Po-Yu Liang, Jen-Chih Chang
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Publication number: 20210173305Abstract: A coating system includes supporting pins, a suction plane, and a calibrating disk. The suction plane is located between the supporting pins, and the calibrating disk is configured to dispose on the supporting pins or the suction plane. The calibrating disk includes a round top surface and a round bottom surface being opposite to the round top surface. The round bottom surface has a round plane and a dependable wall surrounding the round plane, and an edge of the round plane and an edge of the round bottom surface are concentric. The dependable wall is configured to limited horizontal movement of the supporting pins, and the round plane is configured to cover the suction plane. A calibration method of the coating system is also provided.Type: ApplicationFiled: December 9, 2019Publication date: June 10, 2021Inventor: Sheng-Kai CHANG
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Publication number: 20210153118Abstract: A hardware management method includes: checking an application on an electronic device to categorize a scenario of the application into a pre-defined application scenario, and during a period in which the application is running on the electronic device, managing a hardware component of the electronic device in response to the pre-defined application scenario. For example, the hardware component may be a modulator-demodulator (modem).Type: ApplicationFiled: April 30, 2020Publication date: May 20, 2021Inventors: Wang-Hsin Kuo, Sheng-Kai Chang
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Publication number: 20200389937Abstract: The wireless communication device includes one or more wireless transceivers and a controller. The one or more wireless transceivers detect(s) one or more first frequency bands of one or more cellular networks, and detect(s) one or more second frequency bands of one or more non-cellular networks. The controller selects one of the first frequency bands and one of the second frequency bands, which do not overlap, and assigns the selected first frequency band to one of the wireless transceivers, thereby enabling one of the wireless transceivers to camp on a cell on the selected first frequency band. Also, the controller assigns the selected second frequency band to one of the wireless transceivers, thereby enabling one of the wireless transceivers to connect to one of the non-cellular networks on the selected second frequency band.Type: ApplicationFiled: February 24, 2020Publication date: December 10, 2020Inventors: Wei-Lun LIU, Sheng-Kai CHANG, I-Ching HSIEH, Yen-Chih YANG, Teng-Wei HUANG, Tzu-Shiang HSU, Tzu-Yu LEE, Tsung-Yueh CHIANG
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Publication number: 20200252793Abstract: The invention provides method and associated user equipment for improving versatility of a cellular network in a network system. The network system may have a packet core which may include a security gateway for facilitating an unlicensed network to interwork with the packet core. The method may include: by a user equipment, accessing a multimedia subsystem via the security gateway over the cellular network, instead of the unlicensed network.Type: ApplicationFiled: June 10, 2019Publication date: August 6, 2020Inventors: Sheng-Kai CHANG, Po-Yu LIANG, Jen-Chih CHANG
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Publication number: 20200100153Abstract: A communications apparatus communicating with at least one cellular network includes a radio transceiver and a processor. The radio transceiver is capable of transmitting or receiving wireless radio frequency signals to or from an air interface in the cellular network. The processor is configured to determine whether an inter-RAT change will be triggered in a subsequent procedure when the communications apparatus is in a connected mode. When the processor determines that an inter-RAT change procedure will be triggered, the processor is configured to selectively perform a predetermined procedure instead of the subsequent procedure to avoid the inter-RAT change.Type: ApplicationFiled: July 17, 2019Publication date: March 26, 2020Inventors: Guan-Jie HUANG, Tzu-Wen CHANG, Kuan-Wei CHEN, Yu-Hua HUANG, Teng MA, Sheng-Kai CHANG
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Patent number: 10288890Abstract: A system for removably attaching a portable display to a headpiece is described that includes an attachment device configured to receive the portable display. The attachment device includes a mounting base configured to mount to a longitudinal frame member of the headpiece. The mounting base includes a receptacle for receiving a mounting protrusion of the portable display. The attachment device further includes one or more opposing hooks connected to the mounting base. The hooks are configured to receive opposing ends of an elastic band when the elastic band is connected between the hooks and around the longitudinal frame member.Type: GrantFiled: November 2, 2016Date of Patent: May 14, 2019Assignee: Garmin Switzerland GmbHInventors: David F. Lammers-Meis, Sheng-Kai Chang, Ssu-Chieh Yu
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Patent number: 9968007Abstract: A rack assembly includes a rack body and a jet generating device. The rack body is configured to hold a plurality of servers that are displaced from each other by a passageway. The jet generating device is disposed in the passageway and includes a partition wall, a proximal barrier, and a distal barrier. The partition wall is disposed to define an inflow path and an outflow path. When cooling air is drawn into the inflow path, the cooling air is blocked by the distal barrier such that the cooling air is forced to flow into the outflow path through internal ports of the partition wall to generate a plurality of cooling air jets, which impinge on and cool one of the servers.Type: GrantFiled: February 23, 2016Date of Patent: May 8, 2018Assignee: NATIONAL CHIAO TUNG UNIVERSITYInventors: Yao-Hsien Liu, Sheng-Kai Chang
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Publication number: 20170184861Abstract: A system for removably attaching a portable display to a headpiece is described that includes an attachment device configured to receive the portable display. The attachment device includes a mounting base configured to mount to a longitudinal frame member of the headpiece. The mounting base includes a receptacle for receiving a mounting protrusion of the portable display. The attachment device further includes one or more opposing hooks connected to the mounting base. The hooks are configured to receive opposing ends of an elastic band when the elastic band is connected between the hooks and around the longitudinal frame member.Type: ApplicationFiled: November 2, 2016Publication date: June 29, 2017Inventors: David F. Lammers-Meis, Sheng-Kai Chang, Ssu-Chieh Yu
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Publication number: 20170142866Abstract: A rack assembly includes a rack body and a jet generating device. The rack body is configured to hold a plurality of servers that are displaced from each other by a passageway. The jet generating device is disposed in the passageway and includes a partition wall, a proximal barrier, and a distal barrier. The partition wall is disposed to define an inflow path and an outflow path. When cooling air is drawn into the inflow path, the cooling air is blocked by the distal barrier such that the cooling air is forced to flow into the outflow path through internal ports of the partition wall to generate a plurality of cooling air jets, which impinge on and cool one of the servers.Type: ApplicationFiled: February 23, 2016Publication date: May 18, 2017Inventors: Yao-Hsien LIU, Sheng-Kai CHANG