Yung-Chuan
Yung-Chuan Chen, Tainan City TW
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20120299507 | LIGHT SOURCE DRIVING DEVICE - A light source driving device configured to drive a light-emitting unit is provided. The light source driving device includes a direct voltage source, a first capacitance unit, and a switching current adjustment circuit. The direct voltage source is coupled with the light-emitting unit and supplies a direct voltage. The first capacitance unit and the light-emitting unit are connected in parallel. The switching current adjustment circuit and the light-emitting unit are connected in series. The switching current adjustment circuit is configured to bear a part of a voltage stress of the direct voltage source and is configured to switch the direct voltage. | 11-29-2012 |
20130043797 | Lighting Control Systems and Methods - Systems and methods for lighting control are disclosed. The system may include at least one lighting device providing illumination and a handheld unit coupled with the lighting device to control at least one of a controllable lighting state, a controllable lighting intensity, and a controllable lighting effect of the lighting device. The handheld unit may include an image-capturing device and a processor coupled with the image-capturing device. The processor may be configured to control the image-capturing device to capture an image of a space affected by the lighting device; analyze an luminance level of the space; receive a lighting parameter; and provide a command to the lighting device for controlling at least one of the controllable lighting state, the controllable lighting intensity, and the controllable lighting effect of the lighting device based on at least one of the image, the luminance level, and the lighting parameter. | 02-21-2013 |
Yung-Chuan Chen, Neipu Hsiang TW
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20110009839 | Negative Pressure Bandage - A pressure bandage comprises a banding porting, at least one infiltration and at least one fixing member. The banding portion includes at least one recession formed in one side of the banding portion, at least one tube having a first and a second ends, and at least one check valve mounted in the second end of the tube. The first end of the tube is connected to the recession. The infiltration is coupled on the inner surface of the recession of the banding portion. The fixing member fixes the banding portion to a treatment part. | 01-13-2011 |
20110009898 | Pressure Bandage - A pressure bandage comprises a banding portion, a container received a fluid and a fixing member. The container has a first and a second connecting portions, and the first and second connecting portions are respectively protruded from the opposite sides of the banding portion. At least one check valve is mounted in at least one of the first and second connecting portions for delivering the fluid into the container. The fixing member is adapted to fix the banding portion to a treatment part. | 01-13-2011 |
Yung-Chuan Chen, Taitung City TW
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20100022174 | Grinding tool and method for fabricating the same - The present invention relates to a grinding tool and a method for fabricating the same. The method comprises: (A) providing a grinding plate having a working surface and a non-working surface, a mold having an adjustment surface, and a backplane; (B) getting the working surface of the grinding plate to fit precisely and be retained on the adjustment surface of the mold by a binder; (C) forming an adhesive layer on the non-working surface of the grinding plate; (D) disposing the backplane on a surface of the adhesive layer to retain the backplane over the non-working surface of the grinding plate by the adhesive layer; and (E) removing the binder to separate the mold from the grinding plate. Accordingly, the present invention can significantly improve the precision and lifetime of products, reduce the cost of production, and enhance the machining efficiency. | 01-28-2010 |
Yung-Chuan Chen, Pingtung TW
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20110040265 | Pressure Bandage - A pressure bandage includes a banding portion having opposite first and second sides. A chamber is formed in the first side of the banding portion. The second side of the banding portion includes a hole in communication with the chamber. A bladder is received in the chamber and receives a fluid. The bladder includes an infiltratable surface permeable to the fluid. The infiltratable surface of the bladder and the first side of the banding portion face the same direction. The fluid received in the bladder is permeable out of the bladder via the infiltratable surface. A control member is engaged with the hole of the banding portion and imparts a pressure to the bladder. The hole can be a screw hole, and the control member includes a knob threadedly engaged with the screw hole such that the knob is rotatable to adjust the pressure imparted to the bladder. | 02-17-2011 |
Yung-Chuan Chen, Taichung County, Taiwan CN
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20110226124 | Pneumatic Actuator Structure - An actuator structure includes two half cylinders made respectively from the same mold and the two half cylinders engaged with each other to form an actuator. The actuator has an air reservoir chamber and a vane chamber dividing by a dividing unit, and the vane chamber has a vane inside. An O-shaped ring is formed around the vane and an elastic stopping edge is formed protrudingly from the O-shaped ring and linearly contacted an inner surface of the actuator. The volume ratio of the air reservoir chamber and the vane chamber is about three to one, and a channel groove is formed at an interface of the two half cylinders to connect an air inlet hole and a left side and a right side wall of the actuator. A fail-safe or dual-movement control structure is formed to control the direction of air supply to drive the shaft to rotate toward a predetermined direction, or utilizing the compressed air in the air reservoir chamber to force the vane to restore to its original position. | 09-22-2011 |
Yung-Chuan Chen, Hsinchu City TW
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20160060857 | BUG-PROOF AND ODOR-PROOF DRAINAGE DEVICE AND SYSTEM THEREOF - A bug-proof and odor-proof drainage device includes a cover, a base, and a connecting pipe connecting plural bases of different bug-proof and odor-proof drainage device. The cover has plural draining holes arranged in intervals. A capping is disposed on the bottom surface of the cover. The base has a through hole surrounded by a wall part extending upward. The base is embedded in floors of bathrooms and kitchens and connected to a draining pipe through the through hole and also connected to different bases by the connecting pipe. Water flows into the base, and then circuitously sinks to flow over the wall part and rises along the wall part, thereby flowing into the draining pipe from the through hole, such that a portion of water is stored within the base for preventing bugs and odor from entering through the draining holes. | 03-03-2016 |
Yung-Chuan Hsu, Zhubei TW
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20160079874 | CONSTANT ON-TIME (COT) CONTROL IN ISOLATED CONVERTER - A constant on-time isolated converter comprising a transformer is disclosed. The transformer primary side connects to an electronic switch and secondary-side connects to a load and a processor. The processor connects to a driver on primary side through at least one coupling element and to the electronic switch. The processor receives an output voltage or an output current across the load generating a control signal. The driver receives control signal through the coupling element and accordingly changes the electronic switch ON/OFF state, regulating output voltage and current via the transformer, where the electronic switch ON/OFF duration is determined between the moment control signal changes from negative to positive and the moment it changes from positive to negative to achieve a high-speed response to load transient. | 03-17-2016 |
20160079876 | CONSTANT ON-TIME (COT) CONTROL IN ISOLATED CONVERTER - The present invention discloses a constant on-time isolated converter comprising a transformer with a primary side and a secondary side. The primary side is connected to an electronic switch and secondary-side is connected to a load and a processor. The processor is connected to a driver on primary side through at least one coupling element and to the electronic switch. The processor receives an output voltage or an output current across the load generating a control signal accordingly. The driver receives the control signal through the coupling element and accordingly changes the ON/OFF state of the electronic switch, regulating the output voltage and the output current via the transformer, where the duration of the ON/OFF state of the electronic switch is determined between the moment control signal changes from negative to positive and the moment it changes from positive to negative to achieve a high-speed load transient response. | 03-17-2016 |
20160079877 | CONSTANT ON-TIME (COT) CONTROL IN ISOLATED CONVERTER - The present invention discloses a constant on-time isolated converter comprising a transformer with a primary side and a secondary side. The primary side is connected to an electronic switch and secondary-side is connected to a load and a processor. The processor is connected to a driver on primary side through at least one coupling element and to the electronic switch. The processor receives an output voltage or an output current across the load generating a control signal accordingly. The driver receives the control signal through the coupling element and accordingly changes the ON/OFF state of the electronic switch, regulating the output voltage and the output current via the transformer, where the duration of the ON/OFF state of the electronic switch is determined between the moment control signal changes from negative to positive and the moment it changes from positive to negative to achieve a high-speed load transient response. | 03-17-2016 |
Yung-Chuan Hsu, Taoyuan County TW
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20150061700 | CAPACITIVE SENSOR - A capacitive sensor applies to a capacitive touch panel and includes a plurality of first electrodes, a plurality of second electrodes, and a plurality of virtual electrodes. The first electrodes each have a first wire portion. The second electrodes are disposed beneath and insulated from the first electrodes, and cross the first electrodes. The second electrodes each have a second wire portion. The virtual electrodes are each disposed between and spaced from two corresponding ones of the first electrodes. The virtual electrodes each include a plurality of continuous portions and a plurality of interrupted portions. The interrupted portions each overlap a corresponding one of the second wire portions of the second electrodes. The width of each of the interrupted portions is less than or equal to the width of the corresponding second wire portion. | 03-05-2015 |
Yung-Chuan Lee Wang, Taichung City TW
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20130075322 | CLEANING DEVICE OF MEMBRANE FILTRATION APPARATUS - A membrane filtration apparatus includes a frame, in which a plurality of membrane members, an aeration device, a cleaning device, and a jet device are provided. The cleaning device includes a rail mounted on the frame; an up frame engaging the rail to be moved in the rail, a plurality of cleaning wires respectively having an end connected to the up frame and respectively passing through a space between each two of the neighboring membrane members; and a low frame connected to opposite ends of the cleaning wires. A motor is provided to move the up frame so that the cleaning wires are reciprocating in the space to scratch the sludge off the membrane members. | 03-28-2013 |
Yung-Chuan Lin, Hsinchu City TW
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20130178235 | Wireless Communication Positioning Method - A wireless communication positioning method is disclosed for obtaining an estimated position of a mobile device. The wireless communication positioning method includes obtaining an angle of arrival for the mobile device relative to one of a plurality of base stations and obtaining a line of arrival angle extended along the angle of arrival from the one of the plurality of base stations, obtaining a plurality of measured distances of the plurality of base stations relative to the mobile device and obtaining a plurality of measured circles corresponding to the plurality of measured distances, generating a plurality of position lines according to the plurality of measured circles, and calculating the estimated position of the mobile device according to the plurality of position lines and the line of arrival angle. | 07-11-2013 |
20130329581 | METHOD FOR POSITIONING MOBILE DEVICE IN WIRELESS WIDE AREA NETWORK - A method for positioning a mobile device in a wireless wide area network (WWAN) is provided. The method includes determining three measurement circles according to coordinates of three base stations and respectively calculating radiuses of the three measurement circles and distances between the three base stations. The method uses genetic algorithm to derive the best solution of a plurality of variables of an object function and estimates the position of the mobile device according to the best solution. Accordingly, non-line-of-sight (NLOS) errors are reduced, and more accurate positioning can be provided. | 12-12-2013 |
20130337845 | Method and System for Selecting Base Stations to Position Mobile Device - A method for selecting a plurality of base stations to position a mobile device is provided. The method includes selecting a plurality of base station sets from the plurality of base stations, wherein each of the plurality of base station sets corresponds to a distance matrix, utilizing a first artificial neural network (ANN) unit to select a predefined number of the plurality of base station sets from the plurality of base station sets according to a plurality of distance matrixes corresponding to the plurality of base station sets; and utilizing a second ANN unit to position the mobile device according to the predefined number of the plurality of base station sets. | 12-19-2013 |
20140141798 | Method and Computer System for Obtaining Weighted Geometric Dilution of Precision Closed Form - A method utilized in a wireless communication system having a mobile device and a plurality of base stations includes obtaining a geometric matrix according to a plurality of relative distances between the mobile device and the plurality of base stations, obtaining a weighted matrix according to the mobile device and the plurality of base stations, obtaining a weighted geometric dilution of precision according to the weighted matrix and the geometric matrix, so as to obtain a weighted geometric dilution of precision closed form, and choosing a plurality of selected base stations from the plurality of base stations according to the weighted geometric dilution of precision closed form to position the mobile device. | 05-22-2014 |
Yung-Chuan Lin, Yilan City TW
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20120140848 | Transmitting Terminal and Transmit Antenna Selecting Method Thereof - A transmitting terminal includes a signal processing unit, M | 06-07-2012 |
Yung-Chuan Lu, Taipei TW
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20110156592 | END OF LAMP LIFE PROTECTION CIRCUIT WITH BI-LEVEL DETECTIONS FOR THE ELECTRONIC BALLAST AND METHOD THEREOF - The configurations of an end of lamp life protection circuit for a ballast and a method thereof are provided in the present invention. The proposed circuit includes a voltage-dividing circuit receiving an input voltage and outputting a first and a second divided voltages and a switch apparatus raising the first divided voltage when the second divided voltage is less than a first pre-determined threshold value and turning off the ballast when the first divided voltage is higher than a second pre-determined threshold value. | 06-30-2011 |
Yung-Chuan Shen, Taoyuan Hsien TW
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20140196229 | SHOWER HEAD HAVING ELECTRICALLY DRIVEN CLEANING DEVICE - A shower head includes a main body, a motor, a cleaning device and a liquid dispenser. The main body has a channel, an inlet and a plurality of outlets. The channel fluidly connects the inlet and the plurality of outlets. The motor is disposed in the main body and has a driving shaft. The cleaning device is connected to the shaft of the motor. The cleaning device has a cleaning portion exposed on the main body. The liquid dispenser is disposed in the main body and has an outlet terminal in fluid connection with the cleaning portion. | 07-17-2014 |
Yung-Chuan Wu, Hsinchu City CN
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20130293961 | Optical System and Reflection Type Diffraction Grating Thereof - An optical system comprising an input member, a predetermined output plane and a reflection type diffraction grating is disclosed. The input member receives an optical signal. The reflection type diffraction grating comprises a grating profile curved surface and a plurality of diffraction structures. The diffraction structures, which separate the optical signal into a plurality of spectral components, are respectively disposed on the grating profile curved surface by a plurality of pitches. At least some pitches are different from each other, so that the spectral components are emitted to the predetermined output plane in a direction substantially perpendicular to the predetermined output plane. The grating profile curved surface is used for focusing the spectral components on the predetermined output plane. | 11-07-2013 |