Patents by Inventor An-chou Yeh
An-chou Yeh 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: 8497698Abstract: Methods and systems are provided for diagnosing faults of a rotor of an electric motor. A current is obtained for an inverter using a sensor. A preliminary angle is determined by a control unit or processor using a resolver angle of the rotor. A transformation is conducted by the control unit or processor using a transformation angle that is equal to a multiplier multiplied by the preliminary angle. A fault condition is identified via the control unit or processor using the transformation.Type: GrantFiled: August 11, 2010Date of Patent: July 30, 2013Assignee: GM Global Technology Operations LLCInventor: Chia-Chou Yeh
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Patent number: 8487575Abstract: A temperature estimation controller and methods are provided for estimating stator winding temperature over a full range of motor operating speeds. In one implementation, the angular velocity of a motor is determined along with a total power loss for each phase of said motor. The total power loss in each phase comprises stator winding power loss and a core power loss. Stator winding temperatures for each phase of motor can then estimated based on the total power loss in that phase, and a combined thermal impedance for that phase. The combined thermal impedance comprises a first thermal impedance between the stator winding and the stator core, and a second thermal impedance between the stator core and the motor coolant.Type: GrantFiled: September 28, 2009Date of Patent: July 16, 2013Assignee: GM Global Technology Operations LLCInventors: Chia-Chou Yeh, Nitinkumar R. Patel, Yo Chan Son, Steven E. Schulz
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Patent number: 8482237Abstract: A vehicle includes a power source, a motor, and a computing device. The power source provides electrical energy to the motor, and the motor generates rotational motion from the electrical energy received. The computing device is configured to estimate a temperature of the motor in real time based at least in part on a thermal model of the motor. The thermal model includes a plurality of nodes and at least one thermal resistance. Each node represents a region of the motor and each thermal resistance represents a heat transfer path between at least two of the nodes. A method includes solving one or more energy balance equations to determine a temperature change at each node and estimating the temperature of the motor in real time based at least in part on the temperature change at each node and at least one of the thermal resistances in the thermal model.Type: GrantFiled: March 3, 2011Date of Patent: July 9, 2013Assignee: GM Global Technology Operations LLCInventors: Daniel J. Berry, Pankaj Mithal, Paul F. Turnbull, Peter J. Savagian, Chia-Chou Yeh, Steven E. Schulz
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Patent number: 8427734Abstract: A 3D image display device includes a display module, an electrochromic module, a control element and a sensing element. The display module is provided for generating a left-eye image and a right-eye image. The electrochromic module is comprised of a first transparent substrate, a first transparent conductive element, a plurality of first electrochromic elements, an electrolyte layer, a plurality of second electrochromic elements, a second transparent conductive element and a second transparent substrate. The second electrochromic elements are arranged orthogonally with the first electrochromic elements. The control element is provided for switching the voltage of the first and second transparent conductive elements. The sensing element is provided for sensing a rotating direction of the 3D image display device and transmitting a sensing signal to the control element to change the color of the first or second electrochromic element, so as to produce a parallax barrier.Type: GrantFiled: January 18, 2011Date of Patent: April 23, 2013Assignee: J Touch CorporationInventors: Yu-Chou Yeh, Chao-Yi Wang, Wen-Chih Lo, Tsung-Her Yeh
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Patent number: 8421391Abstract: An electric motor system includes an electric motor comprising a stator with windings and a rotor configured to operate at a motor speed; a cooling system comprising coolant configured to cool the rotor and the stator, the coolant having a coolant flow rate and a coolant temperature; an inverter module coupled to the electric motor and configured to provide current to the windings based on inverter control signals; a current regulated torque controller coupled to the inverter module and configured to generate the inverter control signals in response to a derated torque command; and a temperature estimation controller coupled to the current regulated torque controller and configured to generate the derated torque command based on an initial torque command and an estimated stator winding temperature. The temperature estimation controller is configured to estimate the estimated stator winding temperature based on the motor speed and the coolant flow rate.Type: GrantFiled: May 12, 2010Date of Patent: April 16, 2013Assignee: GM Global Technology Operations LLCInventors: Chia-Chou Yeh, Steven E. Schulz
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Publication number: 20130090791Abstract: Methods, systems, and vehicles are provided pertaining to the determination of a temperature of a vehicle motor having an ignition when the ignition is turned on following a period of time in which the ignition had been turned off. A memory stores a function having a boundary condition that comprises a prior temperature from when the ignition was turned off. A processor is coupled to the memory. The processor is configured to determine an amount of time for which the ignition has been turned on and determine the temperature of the motor using the function if the amount of time for which the ignition has been turned on is less than a predetermined threshold.Type: ApplicationFiled: October 6, 2011Publication date: April 11, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: CHIA-CHOU YEH, DANIEL J. BERRY, PAUL F. TURNBULL
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Publication number: 20130062009Abstract: Disclosed is a three-dimensional image output apparatus. The apparatus is designed to output 3D image product. The apparatus includes an image retrieving unit for retrieving at least one first image, and a lens membrane conveying unit for delivering at least one lens membrane. The lens membrane has a glue layer and a protective membrane is adhered thereon. The apparatus includes a printing unit for printing out a product for appearing 3D first image by looking at a second image through lens membrane. The apparatus includes a membrane removing unit for removing the protective membrane, a paving unit for paving the lens membrane onto the product, and an adhering unit for combining lens membrane with the product. The final product is then formed. A control unit is configured to control those units for achieving the production of 3D image, by which the first image is converted to the second image.Type: ApplicationFiled: November 7, 2011Publication date: March 14, 2013Applicant: J TOUCH CORPORATIONInventors: YU-CHOU YEH, CHAO-YI WANG, WEN-CHIH LO, TSUNG-HER YEH, TING-CHING LIN, SU-YING CHEN
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Patent number: 8368991Abstract: A 3D image display device includes a display module, an electrochromic module, a control unit and a sensing unit. The electrochromic module has a first electrochromic element and a second electrochromic element disposed in the different direction, and the electrochromic element is a solution type electrochromic material, and the valence of ions in the material is changed to produce a quick and uniform coloration. The display device transmits a detect signal of the sensing unit to the control unit, and the control unit controls the coloration/decoloration of the first and second electrochromic elements to switch the horizontal or vertical parallax barrier, such that viewers can view a 3D image from different viewing angles and directions.Type: GrantFiled: May 18, 2011Date of Patent: February 5, 2013Assignee: J Touch CorporationInventors: Yu-Chou Yeh, Chao-Yi Wang, Wen-Chih Lo, Chi-Hsien Sung, Tsung-Her Yeh
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Patent number: 8368993Abstract: A 2D/3D image switching display device includes an image display unit and an image switching unit coupled to a surface of the image display unit, and the image switching unit includes a first substrate, a second substrate, first and second conducting elements corresponding to the first and second substrates respectively, and an electrochromic unit installed between the first and second substrates, and the electrochromic unit includes a first electrochromic layer and a second electrochromic layer combined with each other, such that when the image display unit switches its display from the display of planar images to stereo images, the electrochromic layers turn to a dark light-shading condition for a better light-shielding effect, and moire patterns will not be produced after naked eyes receive left and right eye images of a stereo image, and the display device can display stereo images directly without requiring an additional parallax barrier device.Type: GrantFiled: December 8, 2010Date of Patent: February 5, 2013Assignee: J Touch CorporationInventors: Yu-Chou Yeh, Chao-Yi Wang, Tsung-Her Yeh
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Patent number: 8354817Abstract: Systems and methods are provided for diagnosing stator windings in an electric motor operating under control of a current-regulating control loop. The current-regulating control loop is configured to provide a command voltage to the electric motor. The command voltage comprises a current-regulated voltage based on a difference between a commanded current and a measured current through the stator windings. The method comprises determining a negative sequence component of the command voltage, and identifying a fault condition when a characteristic of the negative sequence component is greater than a threshold value.Type: GrantFiled: June 18, 2009Date of Patent: January 15, 2013Assignee: GM Global Technology Operations LLCInventors: Chia-Chou Yeh, Steven E. Schulz, Mohammad N. Anwar
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Publication number: 20120315444Abstract: The present invention discloses a touch panel frame structure comprising: a substrate, made of a transparent insulation material; a sensing layer, formed on a surface of the substrate; a conductor layer, disposed around the periphery of the sensing layer, and electrically coupled to the sensing layer; and an adhesive layer, disposed on a surface of the conductor layer and adhered to the conductor layer between the adhesive layer and the sensing layer, for covering the conductor layer completely. The adhesive layer with a protective coating effect is used for protecting the circuits of the conductor layer from peeling off during use. Particularly, when the substrate is made of a flexible material, the adhesive layer can provide a better protection effect.Type: ApplicationFiled: September 8, 2011Publication date: December 13, 2012Applicant: J TOUCH CORPORATIONInventors: YU-CHOU YEH, YING-YING LIU, HSIAO-SHUN JAN, YUAN-SHENG LIN
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Publication number: 20120271606Abstract: Methods and systems are provided for determining a temperature of a motor of a vehicle having an ignition when the ignition is turned on following a period of time in which the ignition had been turned off. An amount of time for which the vehicle had been turned off is determined. A motor temperature model is run using a time step to simulate the amount of time for which the vehicle had been turned off to determine an initial value of the temperature of the motor.Type: ApplicationFiled: April 20, 2011Publication date: October 25, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Chia-Chou YEH, Steven E. SCHULZ, Daniel J. BERRY
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Patent number: 8284471Abstract: In a touch control electrochromic device such as a resistive or capacitive touch panel, the electrochromic device combined with a resistive touch panel includes a resistive touch panel unit having a first transparent conductive substrate and a second conductive substrate; an electrochromic material, which is a pure liquid filled into the resistive touch panel unit; an insulator installed at internal peripheries of the first transparent conductive substrate and the second conductive substrate; and a controller electrically coupled to the resistive touch panel unit for turning on/off an external power source of the electrochromic material by an external touch control signal. The resistive touch panel unit directly drives the coloration/decoloration of the electrochromic material to achieve the effect of a power saving window or smart glass.Type: GrantFiled: March 10, 2011Date of Patent: October 9, 2012Assignee: J Touch CorporationInventors: Yu-Chou Yeh, Chao-Yi Wang, Wen-Chih Lo, Tsung-Her Yeh
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Publication number: 20120243068Abstract: Disclosed herein is an electrochromic apparatus. In particular, the apparatus is a multi-layer structure mainly having transparent glass substrates. An aerogel with multiple holes is packaged within the structure. The conducting materials are coated on the substrates. An electrochromic material is then packaged within the layers of conducting materials. By applying voltage onto the conducting materials, the property of electrochromic material may be changed, such as changing its transparency or color. Further, photocatalyst material may be coated upon the outside surfaces of the substrates. A solar energy power layer may be disposed on the substrate for supplying power to the apparatus or to others. In accordance with one further embodiment, an electrochromic composite material may be employed into the apparatus, especially packaged within the substrates. The composite material is made of the aerogel and the electrochromic material.Type: ApplicationFiled: June 21, 2011Publication date: September 27, 2012Applicant: J TOUCH CORPORATIONInventors: YU-CHOU YEH, CHAO-YI WANG, WEN-CHIH LO, TSUNG-HER YEH
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Publication number: 20120229463Abstract: The present invention discloses a 3D image visual effect processing method comprising the steps of providing a 3D image, and the 3D image being composed of a plurality of objects, and each of the objects having object coordinates; providing a cursor, and the cursor having cursor coordinates; determining whether or not the cursor coordinates are coincident with the object coordinates of one of the objects; changing a depth coordinate parameter corresponding to the object coordinates of the plurality of object, if the cursor coordinates are coincident with the object coordinates of one of the objects; and redrawing an image of the object matched with the cursor coordinates. Therefore, the invention can highlight the 3D image of an image corresponding to the cursor to enhance the visual effect and interaction.Type: ApplicationFiled: April 27, 2011Publication date: September 13, 2012Applicant: J TOUCH CORPORATIONInventors: YU-CHOU YEH, LIANG-KAO CHANG
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Publication number: 20120226483Abstract: A vehicle includes a power source, a motor, and a computing device. The power source provides electrical energy to the motor, and the motor generates rotational motion from the electrical energy received. The computing device is configured to estimate a temperature of the motor in real time based at least in part on a thermal model of the motor. The thermal model includes a plurality of nodes and at least one thermal resistance. Each node represents a region of the motor and each thermal resistance represents a heat transfer path between at least two of the nodes. A method includes solving one or more energy balance equations to determine a temperature change at each node and estimating the temperature of the motor in real time based at least in part on the temperature change at each node and at least one of the thermal resistances in the thermal model.Type: ApplicationFiled: March 3, 2011Publication date: September 6, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Daniel J. Berry, Pankaj Mithal, Paul F. Turnbull, Peter J. Savagian, Chia-Chou Yeh, Steven E. Schulz
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Publication number: 20120224246Abstract: A grating structure of a 2D/3D switching display device comprises: a first transparent substrate, a first transparent conductive film; a second transparent substrate, and a second transparent conductive film disposed with an interval apart with each other on a side of the first transparent conductive film, such that a potential difference is produced between the first transparent conductive film and the second transparent conductive film; a solution type electrochromic material, disposed between the two transparent conductive films; an isolating element, made of an inorganic material, and disposed on a side of the second transparent conductive film; and a conductive wire layer, disposed on a lateral periphery of the first transparent conductive film and/or the second transparent conductive film. After the conductive wire layer is electrically conducted, the conductive wire layer with a low resistance accelerates the conduction of current, so as to improve the efficiency and uniformity of coloration.Type: ApplicationFiled: April 13, 2011Publication date: September 6, 2012Applicant: J TOUCH CORPORATIONInventors: YU-CHOU YEH, CHAO-YI WANG, WEN-CHIH LO, CHI-HSIEN SUNG, TSUNG-HER YEH
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Patent number: 8253365Abstract: A method for fault diagnosis for a rotor of an electric motor, the electric motor also having a stator, includes the steps of generating, via a processor, a measured motor current for the stator, determining, via the processor, a resolver angle of the rotor, determining, via the processor, a flux angle of the rotor, calculating, via the processor, a transformation angle using the resolver angle and the flux angle, conducting, via the processor, a transformation of the motor current using the transformation angle, and identifying, via the processor, a fault condition based on the transformation.Type: GrantFiled: October 20, 2009Date of Patent: August 28, 2012Assignee: GM Global Technology Operations LLCInventor: Chia-Chou Yeh
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Patent number: 8212452Abstract: In a light-transmitting vibration unit and the module thereof, which the vibration unit comprises a first and a second substrates stacked sequentially with each other, and made of a conductive polymer material, such that both first and second substrates have light transmittance and uniform resistance, and after a vibration driven component is electrically coupled to the first and second substrates, an electric field will be acted for converting electric energy into mechanical energy to produce vibrations. If the vibration unit is coupled directly to a touch-sensitive display unit, an image displayed by the touch-sensitive display unit will be able to pass through the vibration unit, and the vibrations produced by the vibration unit will be more directly transmitted to a touch object.Type: GrantFiled: October 8, 2009Date of Patent: July 3, 2012Assignee: J Touch CorporationInventors: Yu-Chou Yeh, Min-Hui Chiang
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Publication number: 20120154891Abstract: A 3D image display device includes a display module, an electrochromic module, a control unit and a sensing unit. The electrochromic module has a first electrochromic element and a second electrochromic element disposed in the different direction, and the electrochromic element is a solution type electrochromic material, and the valence of ions in the material is changed to produce a quick and uniform coloration. The display device transmits a detect signal of the sensing unit to the control unit, and the control unit controls the coloration/decoloration of the first and second electrochromic elements to switch the horizontal or vertical parallax barrier, such that viewers can view a 3D image from different viewing angles and directions.Type: ApplicationFiled: May 18, 2011Publication date: June 21, 2012Applicant: J TOUCH CORPORATIONInventors: YU-CHOU YEH, CHAO-YI WANG, WEN-CHIH LO, CHI-HSIEN SUNG, TSUNG-HER YEH