Patents by Inventor Der-Ho Chi
Der-Ho Chi 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: 9651732Abstract: A light source module includes a circuit board, a light source electrically coupled to the circuit board including a first light emerging face, a light guide plate close to the light source and including an light incident face, a reflective piece located on one side of the light guide plate, a diffusion plate located on another side of the light guide plate, a frame used to fix the circuit board, the light guide plate, the reflective piece and the diffusion plate. The light incident face and the light emerging face cooperatively forming an angle. Light from the light source is guided by the light guide plate and reflected by the reflective piece and diffused by the diffusion plate.Type: GrantFiled: June 26, 2015Date of Patent: May 16, 2017Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Gwo-Yan Huang, Chien-Liang Chen, Chien-Hsiang Lin, Der-Ho Chi
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Publication number: 20160103274Abstract: A light source module includes a circuit board, a light source electrically coupled to the circuit board including a first light emerging face, a light guide plate close to the light source and including an light incident face, a reflective piece located on one side of the light guide plate, a diffusion plate located on another side of the light guide plate, a frame used to fix the circuit board, the light guide plate, the reflective piece and the diffusion plate. The light incident face and the light emerging face cooperatively forming an angle. Light from the light source is guided by the light guide plate and reflected by the reflective piece and diffused by the diffusion plate.Type: ApplicationFiled: June 26, 2015Publication date: April 14, 2016Inventors: GWO-YAN HUANG, CHIEN-LIANG CHEN, CHIEN-HSIANG LIN, DER-HO CHI
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Publication number: 20160056350Abstract: An LED encapsulation structure includes a reflective cup, a positive electrode plate, and a negative electrode plate. The reflective cup has a light emitting surface, a bottom surface opposite to the light emitting surface, two parallel first sides, and two parallel second sides. The positive electrode plate includes a first weld, a second weld, and a bent portion interconnecting with the first weld and the second weld. The negative electrode plate includes a third weld, a fourth weld, and a second bent portion interconnecting with the third weld and the fourth weld. The first weld and the third weld are positioned on one first side, and spaced from each other. The second weld and the fourth weld are positioned on the bottom surface.Type: ApplicationFiled: December 17, 2014Publication date: February 25, 2016Inventors: GWO-YAN HUANG, CHIEN-LIANG CHEN, DER-HO CHI
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Patent number: 8723596Abstract: A power adapter includes a regulation device, which includes a division circuit, a reference circuit, and an impedance regulation circuit. The division circuit includes a first reference terminal and a second reference terminal. The second reference terminal is connected to an output terminal of the regulation device. The reference circuit includes a third reference terminal connected to the first reference terminal, and the reference circuit outputs a stable reference voltage via the third reference terminal, to provide the stable reference voltage for the first reference terminal. The impedance regulation circuit is connected to the first reference terminal, to provide equivalent impedance for the first reference terminal. The impedance of the equivalent impedance changes in a way corresponding to changes in the current flowing through the output terminal.Type: GrantFiled: April 28, 2011Date of Patent: May 13, 2014Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Der-Ho Chi, Mi Tang, Chun-Peng Huang
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Publication number: 20130328492Abstract: A control circuit for an electrical load in an electronic device includes a voltage divider, a current measurement circuit, a variable-current-output switch and a comparison circuit, the voltage entering the load and the voltage (and thus current) exiting from the load being monitored and compared to a reference voltage, any difference causing the switch to dynamically adjust the level of current being supplied, to protect the load from sudden variations in power supply and ensure a stable and constant supply of power.Type: ApplicationFiled: May 24, 2013Publication date: December 12, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: KUAN-HONG HSIEH, DER-HO CHI, JI-BAO FU, JIN-HUA ZHAO, XIAO-YUN CHEN
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Patent number: 8419211Abstract: A lamp tube includes a lamp shade, connectors fixed to opposite ends of the lamp shade, and a circuit board received in the lamp shade and electrically connected with the connectors. At least two resilient members protrude from opposite sides of the circuit board. Each resilient member is resiliently deformed and urged into contact with an inner surface of the lamp shade. The deformation of the at least two resilient members is for providing a spring push force to the circuit board, thus causing the circuit board to tightly engage the inner surface of the lamp shade, thereby retaining the circuit board in position inside the lamp shade.Type: GrantFiled: July 20, 2011Date of Patent: April 16, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Der-Ho Chi, Yang-Jui Chao, Zhi-Qiang Xie, Xiao-Yin Zhou, Mi Tang, Xiao-Jun Hao
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Publication number: 20120327659Abstract: A device providing illumination by LED includes an illuminating module including a circuit board. The circuit board includes a plurality of LED groups arranged thereon, where each of the plurality of LED groups includes a plurality of LED units connected with each other in series. The plurality of LED units forms an LED matrix, and at least three LED units in each row of the LED matrix belong to different LED groups. Each of the LED units in each column of the LED matrix belongs to a respective LED group. An LED matrix is also provided.Type: ApplicationFiled: August 1, 2011Publication date: December 27, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: DER-HO CHI, YANG-JUI CHAO, JI-BAO FU, MI TANG, KUAN-HONG HSIEH
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Publication number: 20120268025Abstract: A switching circuit system includes a rectification circuit, a transformer, a light-emitting unit, a touch panel including a plurality of touch sensors, and a central processing unit (CPU). The CPU determines that a first user operation is taken place on the touch panel when first and second touch signals from at least two touch sensors have been received within a predetermined time interval, and further determines the track of the touches according to the sequence in which the first and second touch signals were received when the first user operation was determined. The CPU further directs the transformer to control the voltage output to the light-emitting unit according to the determined touch track to control the switching circuit system to execute a first function, and otherwise, a second user operation is determined which executes a second function. A related method is also provided.Type: ApplicationFiled: July 21, 2011Publication date: October 25, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: DER-HO CHI, YANG-JUI CHAO, ZHI-QIANG XIE, JI-BAO FU, WEN-TAO WU, MI TANG
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Publication number: 20120262913Abstract: A lamp tube includes a lamp shade, connectors fixed to opposite ends of the lamp shade, and a circuit board received in the lamp shade and electrically connected with the connectors. At least two resilient members protrude from opposite sides of the circuit board. Each resilient member is resiliently deformed and urged into contact with an inner surface of the lamp shade. The deformation of the at least two resilient members is for providing a spring push force to the circuit board, thus causing the circuit board to tightly engage the inner surface of the lamp shade, thereby retaining the circuit board in position inside the lamp shade.Type: ApplicationFiled: July 20, 2011Publication date: October 18, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: DER-HO CHI, YANG-JUI CHAO, ZHI-QIANG XIE, XIAO-YIN ZHOU, MI TANG, XIAO-JUN HAO
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Publication number: 20120262068Abstract: An LED (light emitting diode) driving circuit includes a rectifying circuit, an LED module, a voltage dropping circuit connected to the LED module, a voltage detecting circuit connected between the voltage dropping circuit and the LED module, and an integrated circuit. The integrated circuit includes a pulse-width modulation (PWM) control module providing PWM waves, an overcurrent protection (OCP) module, an overvoltage protection (OVP) module, and a frequency control module. The OCP module detects the working current of the LED module, and the OVP module detects the working voltage. The frequency control module adjust the duty cycle of the PWM waves according to the results of comparisons made by the OCP module and the OVP module against reference levels, to adjust the working current of the LED module.Type: ApplicationFiled: September 27, 2011Publication date: October 18, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD .Inventors: DER-HO CHI, YANG-JUI CHAO, ZHI-QIANG XIE, JI-BAO FU, WEN-TAO WU, MI TANG
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Publication number: 20120161652Abstract: A light emitting diode (LED) illumination apparatus includes an LED illumination circuit and a constant current drive circuit to provide constant current to the LED illumination circuit. The LED illumination circuit includes at least two lighting branches connected in parallel, and each of the at least two lighting branches includes at least one LED and a current regulative diode connected in series.Type: ApplicationFiled: July 15, 2011Publication date: June 28, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: DER-HO CHI, YANG-JUI CHAO, ZHI-QIANG XIE, JI-BAO FU, MI TANG, WEN-TAO WU
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Publication number: 20120161743Abstract: A power adapter includes a regulation device, which includes a division circuit, a reference circuit, and an impedance regulation circuit. The division circuit includes a first reference terminal and a second reference terminal. The second reference terminal is connected to an output terminal of the regulation device. The reference circuit includes a third reference terminal connected to the first reference terminal, and the reference circuit outputs a stable reference voltage via the third reference terminal, to provide the stable reference voltage for the first reference terminal. The impedance regulation circuit is connected to the first reference terminal, to provide equivalent impedance for the first reference terminal. The impedance of the equivalent impedance changes in a way corresponding to changes in the current flowing through the output terminal.Type: ApplicationFiled: April 28, 2011Publication date: June 28, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: DER-HO CHI, MI TANG, CHUN-PENG HUANG
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Publication number: 20100060400Abstract: A transformer includes a bobbin, an iron core and two spiral flat windings. The bobbin has a primary side portion, a secondary side portion and a separating plate. The separating plate is provided between the primary side portion and the secondary side portion. The first, second and third through holes are in communication with each other. The iron core penetrates the first, second and third through holes. The spiral flat winding is formed from a plurality of flat loops. The two spiral flat windings are provided on both sides of the separating plate and surround the primary side portion and the secondary side portion. Via the above arrangement, the spiral flat winding can be disposed around the bobbin, so that the assembling process can be performed simply and quickly. Thus, the working hours for assembling and the cost can be reduced.Type: ApplicationFiled: September 11, 2008Publication date: March 11, 2010Inventors: Chun-Kong Chan, Der-Ho Chi
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Patent number: D759884Type: GrantFiled: December 16, 2014Date of Patent: June 21, 2016Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Gwo-Yan Huang, Chien-Liang Chen, Der-Ho Chi