Patents by Inventor Zhen-Hua Li
Zhen-Hua Li 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: 11545754Abstract: An antenna oscillator unit includes a radiator and a balun support. The radiator is fixed to the balun support and includes a plurality of low-frequency oscillator arms circumferentially distributed along the balun support. Each of the low-frequency oscillator arms includes two radiating sections connected to each other and a connecting section connecting the two radiating sections to form a closed loop. The two radiating sections are substantially perpendicular to each other. The antenna oscillator unit of some embodiments can avoid mutual coupling of signals from the antenna oscillator unit and an adjacent high-frequency oscillator and can improve the capability to radiate electromagnetic signals.Type: GrantFiled: March 8, 2021Date of Patent: January 3, 2023Assignee: KUNSHAN LUXSHARE RF TECHNOLOGY CO., LTD.Inventors: Lu Chen, Cheng-Yu Xu, Zheng-Guo Zhou, Wan-Qiang Zhang, Zhen-Hua Li, Wen-Kai Xu, Meng-Yun Gu
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Publication number: 20210194136Abstract: An antenna oscillator unit includes a radiator and a balun support. The radiator is fixed to the balun support and includes a plurality of low-frequency oscillator arms circumferentially distributed along the balun support. Each of the low-frequency oscillator arms includes two radiating sections connected to each other and a connecting section connecting the two radiating sections to form a closed loop. The two radiating sections are substantially perpendicular to each other. The antenna oscillator unit of some embodiments can avoid mutual coupling of signals from the antenna oscillator unit and an adjacent high-frequency oscillator and can improve the capability to radiate electromagnetic signals.Type: ApplicationFiled: March 8, 2021Publication date: June 24, 2021Applicant: Kunshan Luxshare RF Technology Co., Ltd.Inventors: Lu Chen, Cheng-Yu Xu, Zheng-Guo Zhou, Wan-Qiang Zhang, Zhen-Hua Li, Wen-Kai Xu, Meng-Yun Gu
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Publication number: 20200306870Abstract: A heat transmitting device is provided, including a main body and an integrating portion. The main body has at least one opening. The integrating portion is used to seal the opening, and has a first surface and a second surface opposite the first surface. A first welding pattern is formed on the first surface, a second welding pattern is formed on the second surface, and the position of the first welding pattern corresponds to that of the second welding pattern. The type of the first welding pattern and the type of the second welding pattern are asymmetric.Type: ApplicationFiled: March 3, 2020Publication date: October 1, 2020Inventors: Shih-Lin HUANG, Tai-De QI, Zhen-Hua LI
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Patent number: 7459941Abstract: A device for detecting an interface voltage of a Universal Serial Bus (USB) interface. The device includes first and second voltage level indicators, and first and second control circuits. The first control circuit receives the interface voltage to generate a first control signal and drive the first voltage level indicator when the interface voltage level is less than a first voltage level. The second control circuit receives the interface voltage to generate a second control signal and drive the second voltage level indicator when the interface voltage level exceeds a second voltage level.Type: GrantFiled: September 1, 2006Date of Patent: December 2, 2008Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventor: Zhen-Hua Li
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Publication number: 20070152718Abstract: A device for detecting an interface voltage of a Universal Serial Bus (USB) interface. The device includes first and second voltage level indicators, and first and second control circuits. The first control circuit receives the interface voltage to generate a first control signal and drive the first voltage level indicator when the interface voltage level is less than a first voltage level. The second control circuit receives the interface voltage to generate a second control signal and drive the second voltage level indicator when the interface voltage level exceeds a second voltage level.Type: ApplicationFiled: September 1, 2006Publication date: July 5, 2007Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Zhen-Hua Li
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Publication number: 20070139101Abstract: An exemplary power supply circuit includes a comparator and two MOSFET transistors connected in parallel. The comparator has a non-inverting terminal connected to a reference voltage. Both gates of the MOSFET transistors are connected to an output terminal of the comparator, both drains of the MOSFET transistors are connected to a power supply, both sources of the two MOSFET transistors are connected to an inverting terminal of the comparator and act as an output of the power supply circuit.Type: ApplicationFiled: August 4, 2006Publication date: June 21, 2007Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: TING-KAI WANG, Zhen-Hua Li
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Publication number: 20070132315Abstract: A power supply system for providing main power and standby power to peripheral electronic devices in a computer, comprises an input signal coming from a CPU of the computer; a driving device for receiving the input signal and generating a driving signal; a first power switch device connected with a first main power source and a first standby power source; and a second power switch device connected with a second main power source and a second standby power source. When the driving signal is transmitted into the first power switch device and the second power switch device, the first power switch device outputs the first main power source or the first standby power source in response to the driving signal to one of the peripheral electronic devices, and the second power switch device outputs the second main power source or the second standby power source in response to the driving signal to another one of the peripheral electronic devices.Type: ApplicationFiled: August 18, 2006Publication date: June 14, 2007Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: TING-KAI WANG, ZHEN-HUA LI