Patents by Inventor He-Kang Zhou
He-Kang Zhou 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: 8213196Abstract: A power supply circuit includes a direct current (DC) voltage source, a protecting circuit having a first switching element, a pulse width modulation (PWM) circuit having a first terminal, a switching circuit, and a transformer. The DC voltage source is configured to provide a first DC voltage. The first terminal is configured to receive the first DC voltage via the first switching element to enable the PWM circuit. The PWM circuit is configured to switch on or switch off the switching circuit. The transformer is configured to convert the first DC voltage to an alternating current (AC) voltage in cooperation with the switching circuit.Type: GrantFiled: December 29, 2008Date of Patent: July 3, 2012Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux CorporationInventors: He-Kang Zhou, Tong Zhou
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Patent number: 8106762Abstract: An electrical apparatus with an alarm includes an electrical device and an alarm system, the electrical device and the alarm system being both connected to an external power supply. The alarm system includes a wireless communication circuit and a control module. The control module is connected between the external power supply and the wireless communication circuit. The control module controls the wireless communication circuit to send an alarm notification when the electrical device is disconnected from the external power supply.Type: GrantFiled: April 27, 2009Date of Patent: January 31, 2012Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux CorporationInventors: He-Kang Zhou, Tong Zhou
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Patent number: 7973760Abstract: An exemplary backlight control circuit (200) includes a DC power supply (VDD), a load circuit (210), an input circuit (230), and a PWM IC (250). The load circuit includes two light sources (2113, 2114) and a rectifier and filter circuit (213). The input circuit includes a diode (231) and a capacitor (237). The PWM IC includes a current sampling pin (251) and an overvoltage protection pin (253). A low voltage terminal of a first one of the two light sources is connected to the current sampling pin via the rectifier and filter circuit, and a low voltage terminal of a second one of the two light sources is connected to a cathode of the diode. An anode of the diode is connected to the DC power supply and grounded via the capacitor. The overvoltage protection pin is connected to the DC power supply.Type: GrantFiled: October 16, 2007Date of Patent: July 5, 2011Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chemei Innolux CorporationInventors: He-Kang Zhou, Jian-Hui Lu, Tong Zhou
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Patent number: 7969407Abstract: An exemplary backlight driving circuit (20) a first power supply (260); a second power supply (270); a signal output terminal (280); an AND gate (210); a follower (220); a capacitor (290); a reverser (230); a first transistor (240), which is a N-Channel mode metal-oxide-semiconductor field-effect transistor (N-MOSFET), having a gate electrode connected to an output end of the AND gate through the follower, a source electrode connected to the signal output terminal, a drain electrode connected to the first power supply; and a second transistor (250), which is a N-Channel mode metal-oxide-semiconductor field-effect transistor (N-MOSFET), having a gate electrode connected to the output end of the AND gate through the reverser, a source electrode connected to the ground, a drain electrode connected to the signal output terminal.Type: GrantFiled: August 6, 2007Date of Patent: June 28, 2011Assignees: Innocom Technology (ShenZhen) Co., Ltd., Chimei Innolux CorporationInventors: Jian-Hui Lu, He-Kang Zhou, Tong Zhou
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Publication number: 20110110121Abstract: A power supply circuit includes a rectifying circuit, at least one filter member, a transformer, and a control circuit. The rectifying circuit is configured to receive a primary AC voltage signal and convert the primary AC voltage signal to a DC voltage signal. The at least one filter member is grounded via a current-limiting module, and is configured to filter the DC voltage signal. The transformer is configured to transform the filtered DC voltage signal to a main power voltage signal, and output the main power voltage signal. The control circuit is configured to enable the current-limiting element to function when the power supply circuit is powered on, and disable the current-limiting element when the power supply circuit is in a normal working state.Type: ApplicationFiled: September 26, 2010Publication date: May 12, 2011Applicants: INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD., CHIMEI INNOLUX CORPORATIONInventors: HE-KANG ZHOU, CHING-CHUNG LIN
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Publication number: 20110074763Abstract: A liquid crystal display (LCD) power supplying circuit includes a motherboard switch circuit, an LCD power circuit, a power switch circuit, and a first power supplying unit. An input terminal of the motherboard switch circuit is coupled to a power output terminal of a motherboard. An input terminal of the power switch circuit is coupled to the LCD power circuit. The first power supplying unit is coupled to an output terminal of the motherboard switch circuit, an output terminal of the power switch circuit and a microprocessor, and the first power supplying unit supplies power from the motherboard or power from the LCD power circuit to the microprocessor.Type: ApplicationFiled: September 9, 2010Publication date: March 31, 2011Applicants: INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD., Chimei Innolux CorporationInventors: He-Kang ZHOU, Ching-Chung LIN, Em-Ily YANG, Jin-Ming LIU
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Patent number: 7791399Abstract: An LCD driving circuit comprising an over-voltage protection circuit includes an input terminal to receive an input voltage, a voltage-dividing circuit, a voltage-stabilizing circuit including a voltage-stabilizing element, a control circuit, a switching element, and an output terminal. The voltage-dividing circuit provides a reference voltage according to the input voltage to the voltage-stabilizing circuit, the voltage-stabilizing circuit determines whether the voltage-stabilizing element conducts according to the reference voltage, and the control circuit controls the switching element to switch on or off according to a working stage of the voltage-stabilizing element to determine whether the output terminal outputs an output voltage.Type: GrantFiled: April 20, 2009Date of Patent: September 7, 2010Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux CorporationInventors: He-Kang Zhou, Tong Zhou
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Patent number: 7737644Abstract: An exemplary backlight control circuit (20) includes at least two sampling circuits (21), at least two feedback circuits (22), and a PWM IC (23). Each of the sampling circuits includes a sampling output (210) and a backlight lamp (211). The PWM IC includes a current sense pin (230). The at least two feedback circuits correspond to the at least two sampling circuits, respectively. Each of the feedback circuits includes a resistor (222) and a diode (223) electrically coupled in parallel. The sampling output is configured to output a first voltage when the backlight lamp is in a normal working state, and output a second voltage when the backlight lamp has an open circuit. One terminal of the diode is electrically coupled to the sampling output of a corresponding one of the sampling circuits, and an opposite terminal of the diode is electrically coupled to the current sense pin.Type: GrantFiled: July 2, 2007Date of Patent: June 15, 2010Assignees: Innocom Technology (ShenZhen) Co., Ltd., Innolux Display Corp.Inventors: Jian-Hui Lu, Tong Zhou, He-Kang Zhou
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Patent number: 7638955Abstract: An exemplary backlight control circuit (20) includes at least two sampling circuits (21), at least two feedback circuits (22), and a PWM IC (23). Each of the sampling circuits includes a sampling output (210) and a backlight lamp (211). The PWM IC includes a current sense pin (230). The at least two feedback circuits correspond to the at least two sampling circuits, respectively. Each of the feedback circuits includes a resistor (222) and a diode (223) electrically coupled in parallel. The sampling output is configured to output a first voltage when the backlight lamp is in a normal working state, and output a second voltage when the backlight lamp has an open circuit. One terminal of the diode is electrically coupled to the sampling output of a corresponding one of the sampling circuits, and an opposite terminal of the diode is electrically coupled to the current sense pin.Type: GrantFiled: July 2, 2007Date of Patent: December 29, 2009Assignees: Innocom Technology (ShenZhen) Co., Ltd., Innolux Display Corp.Inventors: Jian-Hui Lu, Tong Zhou, He-Kang Zhou
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Patent number: 7633241Abstract: An exemplary backlight modulation circuit (200) includes a pulse generator circuit (210) configured for generating a first square pulse; a voltage division circuit (230) configured for receiving the first square pulse and generating a second square pulse according to the first square pulse; an oscillator circuit (240) configured for generating a reference voltage; and an amplifier (200) comprising a negative input configured for receiving the second square pulse from the voltage division circuit, and a positive input configured for receiving the reference voltage from the oscillator circuit as a reference pulse signal, the amplifier being configured for generating a backlight adjusting signal according to the reference pulse signal and the second square pulse.Type: GrantFiled: July 9, 2007Date of Patent: December 15, 2009Assignees: Innocom Technology (ShenZhen) Co., Ltd., Innolux Display Corp.Inventors: Jian-Hui Lu, Tong Zhou, He-Kang Zhou
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Publication number: 20090270131Abstract: An electrical apparatus with an alarm includes an electrical device and an alarm system, the electrical device and the alarm system being both connected to an external power supply. The alarm system includes a wireless communication circuit and a control module. The control module is connected between the external power supply and the wireless communication circuit. The control module controls the wireless communication circuit to send an alarm notification when the electrical device is disconnected from the external power supply.Type: ApplicationFiled: April 27, 2009Publication date: October 29, 2009Inventors: He-Kang Zhou, Tong Zhou
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Publication number: 20090261894Abstract: An LCD driving circuit comprising an over-voltage protection circuit includes an input terminal to receive an input voltage, a voltage-dividing circuit, a voltage-stabilizing circuit including a voltage-stabilizing element, a control circuit, a switching element, and an output terminal. The voltage-dividing circuit provides a reference voltage according to the input voltage to the voltage-stabilizing circuit, the voltage-stabilizing circuit determines whether the voltage-stabilizing element conducts according to the reference voltage, and the control circuit controls the switching element to switch on or off according to a working stage of the voltage-stabilizing element to determine whether the output terminal outputs an output voltage.Type: ApplicationFiled: April 20, 2009Publication date: October 22, 2009Inventors: He-Kang Zhou, Tong Zhou
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Publication number: 20090168465Abstract: A power supply circuit includes a direct current (DC) voltage source, a protecting circuit having a first switching element, a pulse width modulation (PWM) circuit having a first terminal, a switching circuit, and a transformer. The DC voltage source is configured to provide a first DC voltage. The first terminal is configured to receive the first DC voltage via the first switching element to enable the PWM circuit. The PWM circuit is configured to switch on or switch off the switching circuit. The transformer is configured to convert the first DC voltage to an alternating current (AC) voltage in cooperation with the switching circuit.Type: ApplicationFiled: December 29, 2008Publication date: July 2, 2009Inventors: He-Kang Zhou, Tong Zhou
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Publication number: 20080298020Abstract: An exemplary heat dissipation device (20) includes a base (21) and heat dissipation fins (22) extending from the base. Each heat dissipation fin has ventholes (23) formed therein. An area of an inner surface of each venthole is greater than twice an area of a transverse cross-section of the venthole. The heat dissipation device has a high heat dissipation efficiency.Type: ApplicationFiled: June 4, 2007Publication date: December 4, 2008Inventors: He-Kang Zhou, Tong Zhou
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Publication number: 20080117641Abstract: An exemplary light emitting diode illumination device powered by a liquid crystal display device (20) includes a light emitting diode light source (21) and a supporting member (23). The light emitting diode light source receives electrical power from the liquid crystal display device (22). The light emitting diode light source is connected to the liquid crystal display device via the supporting member. Because a power supply circuit of the liquid crystal display device has an electromagnetic interference filter function, a positive feedback function, and a negative feedback function, the brightness of the light emitting diode illumination device powered by a liquid crystal display device is steady.Type: ApplicationFiled: November 21, 2007Publication date: May 22, 2008Inventors: He-Kang Zhou, Jian-Hui Lu, Tong Zhou
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Publication number: 20080106839Abstract: An exemplary printed circuit board (2) includes a substrate (21) and a printed circuit (20) formed on the substrate. The printed circuit includes a first input wire (210) and a ground wire (230). The first input wire includes at least one tip and the ground wire includes at least one tip facing the at least one tip of the first input wire. Each of the tips of the first input wire and the ground wire defines a pointed end.Type: ApplicationFiled: November 5, 2007Publication date: May 8, 2008Inventors: He-Kang Zhou, Jian-Hui Lu, Tong Zhou
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Publication number: 20080088257Abstract: An exemplary backlight control circuit (200) includes a DC power supply (VDD), a load circuit (210), an input circuit (230), and a PWM IC (250). The load circuit includes two light sources (2113, 2114) and a rectifier and filter circuit (213). The input circuit includes a diode (231) and a capacitor (237). The PWM IC includes a current sampling pin (251) and an overvoltage protection pin (253). A low voltage terminal of a first one of the two light sources is connected to the current sampling pin via the rectifier and filter circuit, and a low voltage terminal of a second one of the two light sources is connected to a cathode of the diode. An anode of the diode is connected to the DC power supply and grounded via the capacitor. The overvoltage protection pin is connected to the DC power supply.Type: ApplicationFiled: October 16, 2007Publication date: April 17, 2008Inventors: He-Kang Zhou, Jian-Hui Lu, Tong Zhou
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Publication number: 20080030454Abstract: An exemplary backlight driving circuit (20) a first power supply (260); a second power supply (270); a signal output terminal (280); an AND gate (210); a follower (220); a capacitor (290); a reverser (230); a first transistor (240), which is a N-Channel mode metal-oxide-semiconductor field-effect transistor (N-MOSFET), having a gate electrode connected to an output end of the AND gate through the follower, a source electrode connected to the signal output terminal, a drain electrode connected to the first power supply; and a second transistor (250), which is a N-Channel mode metal-oxide-semiconductor field-effect transistor (N-MOSFET), having a gate electrode connected to the output end of the AND gate through the reverser, a source electrode connected to the ground, a drain electrode connected to the signal output terminal.Type: ApplicationFiled: August 6, 2007Publication date: February 7, 2008Inventors: Jian-Hui Lu, He-Kang Zhou, Tong Zhou
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Publication number: 20080030147Abstract: An exemplary backlight driving circuit (20) includes a first pulse generator (230), a second pulse generator (240), a transformer (250) having a primary winding (251), a first transistor (210), a second transistor (220), and a first capacitor (290). The first transistor is a P-MOSFET. The first transistor includes a gate electrode (211) connected to the first pulse generator, and a drain electrode (213) connected to a first terminal (252) of the primary winding. The second transistor is an N-MOSFET. The second transistor includes a gate electrode (221) connected to the second pulse generator, a source electrode (222) connected to ground, and a drain electrode (223) connected to the first terminal of the primary winding. The first capacitor includes one terminal connected to a second terminal of the primary winding.Type: ApplicationFiled: August 6, 2007Publication date: February 7, 2008Inventors: Jian-Hui Lu, He-Kang Zhou, Tong Zhou
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Publication number: 20080007186Abstract: An exemplary backlight modulation circuit (200) includes a pulse generator circuit (210) configured for generating a first square pulse; a voltage division circuit (230) configured for receiving the first square pulse and generating a second square pulse according to the first square pulse; an oscillator circuit (240) configured for generating a reference voltage; and an amplifier (200) comprising a negative input configured for receiving the second square pulse from the voltage division circuit, and a positive input configured for receiving the reference voltage from the oscillator circuit as a reference pulse signal, the amplifier being configured for generating a backlight adjusting signal according to the reference pulse signal and the second square pulse.Type: ApplicationFiled: July 9, 2007Publication date: January 10, 2008Inventors: Jian-Hui Lu, Tong Zhou, He-Kang Zhou