Patents by Inventor Chang JIANG
Chang JIANG 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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Publication number: 20150025828Abstract: A method for estimating torque control error at an electric machine considers the effects of current sensor error characteristics. Systems and methods can be practiced to determine the maximum sensor error that can be tolerated without causing unacceptable torque error. An example method uses sensor characteristics and machine characteristics to determine current sensing error, current control error, and torque control error. Determining the lowest sensor accuracy required for a desired torque control accuracy can facilitate the use of lower cost sensors in current-feedback controlled electric drive systems without compromising performance. Other applications can include vehicle diagnostics and torque error compensation.Type: ApplicationFiled: July 16, 2013Publication date: January 22, 2015Inventors: Chang-jiang Wang, Michael Degner
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Publication number: 20140077739Abstract: An embedded controller in a vehicle electronics subsystem includes a signal processing circuit used to communicate with an electric machine. The signal processing circuit may be configured to receive an input signal from the electric machine and provide digital output signals to the embedded controller. The digital output signals may include Hall position and rotor position signals. Once the digital output signals are processed by a processor embedded within the controller, the processor may issue a control command to the electric machine. The processor may have memory containing software to make the processor execute the computation of the control command of the electric machine in accordance with a torque command.Type: ApplicationFiled: September 20, 2012Publication date: March 20, 2014Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Chang-Jiang Wang, Michael W. Degner, William Reynolds
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Publication number: 20130270974Abstract: Systems, methods and apparatus are presented to determine high voltage cable connectivity between an inverter module and a remote electric machine. A high frequency (HF) interlock module can be configured to inject a high frequency excitation signal that can be superimposed on inverter drive signals. High frequency current components can be determined and used to determine connectivity status. The sum and difference of positive and negative sequence component values can be compared to predetermined limitations to detect one or more open phases. An example method can include enabling a HF detection strategy under predetermined conditions. In response to an open phase detection a fault flag can be set.Type: ApplicationFiled: April 16, 2012Publication date: October 17, 2013Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Chang-Jiang Wang, Michael W. Degner, Ji Wu
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Publication number: 20130206332Abstract: An adhesive tape is disclosed. The adhesive tape includes a first release layer, an adhesive layer, and a second release layer, wherein the second release layer has a positioning portion, and a total area of the second release layer is greater than a total area of the first release layer. Further, an adhesion device and an adhesion method are disclosed. The adhesion device includes a base having a receiving slot and a positioning unit. The adhesive tape is received in the receiving slot of the base, such that the positioning portion of the adhesive tape and the positioning unit of the base are used for positioning each other. After the first release layer is removed to expose the adhesive layer, a supporting component is adhered to the adhesive layer.Type: ApplicationFiled: May 29, 2012Publication date: August 15, 2013Applicants: ASKEY COMPUTER CORPORATION, ASKEY TECHNOLOGY ( JIANGSU) LTD.Inventors: Wen Chang Jiang, Wei Huang, Ching-Feng Hsieh
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Patent number: 7914644Abstract: A method for mounting a protective film (11) on a screen (13) comprises these steps: providing a protective film and a screen having shape and area approximately equal to that of the protective film; holding the screen; aligning the protective film with the screen; and mounting the protective film on the screen.Type: GrantFiled: November 29, 2007Date of Patent: March 29, 2011Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) LimitedInventors: Ying-Chang Jiang, Chia-Hsing Chang, Ling-Dong Xiang
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Publication number: 20090293935Abstract: A solar collector includes a base having an internal chamber therein, a plurality of openings, and low reflection materials at an inner periphery thereof, a lens unit for enabling the sun's rays to penetrate into the internal chamber through the openings, an optical transfer unit disposed in the internal chamber to receive the sun's rays and transform that into electric energy, and at least one heat transfer member mounted to the base to transfer heat energy transformed by the sun's rays that is received by the low reflection materials. Thus, the solar collector of the present invention is capable of receiving the sun's rays with different incident angles to transform the sun's rays into the electric energy and the heat energy.Type: ApplicationFiled: July 31, 2008Publication date: December 3, 2009Applicant: NATIONAL FORMOSA UNIVERSITYInventors: Chung-Pin Liao, Chang-Jiang Cheng, Hsien-Ming Chang
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Publication number: 20090047415Abstract: A method for mounting a protective film (11) on a screen (13) comprises these steps: providing a protective film and a screen having shape and area approximately equal to that of the protective film; holding the screen; aligning the protective film with the screen; and mounting the protective film on the screen.Type: ApplicationFiled: November 29, 2007Publication date: February 19, 2009Applicants: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., SUTECH TRADING LIMITEDInventors: YING-CHANG JIANG, CHIA-HSING CHANG, LING-DONG XIANG
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Publication number: 20090047506Abstract: A piece of laminated glass is provided. The laminated glass includes a first glass layer (12), a second glass layer (16), and an interlayer (14). The interlayer is located between the first glass layer and the second glass layer. The interlayer is integrally formed with the first glass layer and the second glass layer as a whole. The interlayer is made of Acrylate material.Type: ApplicationFiled: December 20, 2007Publication date: February 19, 2009Applicants: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., SUTECH TRADING LIMITEDInventors: YING-CHANG JIANG, LING-DONG XIANG, CHIA-HSING CHANG, PENG LU
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Patent number: 7425964Abstract: A color compensation method for a display device. A brightness eigenvalue and color gamut eigenvalue of the display device is determined. A plurality of signals of three major colors are applied into the display device to display a plurality of colors. The colors are measured to get a plurality of chromaticity eigenvalues. The brightness eigenvalue, the color gamut eigenvalue and the signals of the three major colors are applied into a formula to establish a color database. A target chromaticity eigenvalue and a data eigenvalue in the color database are applied into another formula to calculate a compensated signal eigenvalue to compensate color difference of the display device.Type: GrantFiled: July 14, 2005Date of Patent: September 16, 2008Assignee: Au Optronics Corp.Inventors: Chih-Wei Chen, Shin-Chang Jiang, Ker-Feng Lin
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Patent number: 7330349Abstract: A docking apparatus includes a port replicator (50), a base (30) for supporting the port replicator thereon, a fixing member (60), a resilient member (80), and a button (10). An accommodating hole (51) is defined in the port replicator, and a hole (351) is defined in the base corresponding to the accommodating hole of the port replicator. In use, the resilient member drives the fixing member upwardly to extend through the hole of the protrusion to engage in the accommodating hole of the port replicator thereby fixedly attaching the port replicator to the base. The button 10 is to drive the fixing member to retract from the accommodating hole of the port replicator to release the port replicator from the base.Type: GrantFiled: December 20, 2004Date of Patent: February 12, 2008Assignees: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Yun-Lung Chen, Da-Long Sun, Chang-Jiang Hou
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Patent number: 7265971Abstract: A computer front bezel includes a body (20) and a cover (40). The cover is pivotably secured to the body. A top wall (46) extends inwardly from the cover. At least one input/output (I/O) hole (462) is defined in the top wall corresponding to I/O sockets of a circuit board mounted on the cover. Wherein the cover is rotated to uncover the I/O holes.Type: GrantFiled: April 28, 2005Date of Patent: September 4, 2007Assignees: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Yun-Lung Chen, Chang-Jiang Hou, Qing-Hua Huang
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Patent number: 7254821Abstract: A dustcover device for protecting an optical disk drive (20) having a tray (22) includes a bezel (30), a dustcover member (40) and a coil spring (50) mounted to between the bezel and the dustcover member for driving the dustcover to move upwardly to an upper position vertically. The bezel defines an opening (320) and a plurality of receiving grooves (324). The dustcover member comprises a dustcover (42) movably mounted to the bezel and a frame (44). The frame is rotatablely attached to the bezel, for driving the dustcover to slide downwardly to a lower position along the receiving grooves of the bezel. When the dustcover is in the upper position, the dustcover is received in the opening of the bezel. When the dustcover is in the lower position, the opening is open for the tray sliding into or out of the bezel.Type: GrantFiled: December 23, 2004Date of Patent: August 7, 2007Assignees: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Yun-Lung Chen, Quan-Guang Du, Chang-Jiang Hou
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Publication number: 20060012607Abstract: A color compensation method for a display device. A brightness eigenvalue and color gamut eigenvalue of the display device is determined. A plurality of signals of three major colors are applied into the display device to display a plurality of colors. The colors are measured to get a plurality of chromaticity eigenvalues. The brightness eigenvalue, the color gamut eigenvalue and the signals of the three major colors are applied into a formula to establish a color database. A target chromaticity eigenvalue and a data eigenvalue in the color database are applied into another formula to calculate a compensated signal eigenvalue to compensate color difference of the display device.Type: ApplicationFiled: July 14, 2005Publication date: January 19, 2006Inventors: Chih-Wei Chen, Shin-Chang Jiang, Ker-Feng Lin
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Publication number: 20050286216Abstract: A computer front bezel includes a body (20) and a cover (40). The cover is pivotably secured to the body. A top wall (46) extends inwardly from the cover. At least one input/output (I/O) hole (462) is defined in the top wall corresponding to I/O sockets of a circuit board mounted on the cover. Wherein the cover is rotated to uncover the I/O holes.Type: ApplicationFiled: April 28, 2005Publication date: December 29, 2005Applicant: HON HAI Precision Industry CO., LTD.Inventors: Yun-Lung Chen, Chang-Jiang Hou, Qing-Hua Huang
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Publication number: 20050280985Abstract: A docking apparatus includes a port replicator (50), a base (30) for supporting the port replicator thereon, a fixing member (60), a resilient member (80), and a button (10). An accommodating hole (51) is defined in the port replicator, and a hole (351) is defined in the base corresponding to the accommodating hole of the port replicator. In use, the resilient member drives the fixing member upwardly to extend through the hole of the protrusion to engage in the accommodating hole of the port replicator thereby fixedly attaching the port replicator to the base. The button 10 is to drive the fixing member to retract from the accommodating hole of the port replicator to release the port replicator from the base.Type: ApplicationFiled: December 20, 2004Publication date: December 22, 2005Applicant: HON HAI Precision Industry CO., LTD.Inventors: Yun-Lung Chen, Da-Long Sun, Chang-Jiang Hou
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Publication number: 20050240951Abstract: A dustcover device for protecting an optical disk drive (20) having a tray (22) includes a bezel (30), a dustcover member (40) and a coil spring (50) mounted to between the bezel and the dustcover member for driving the dustcover to move upwardly to an upper position vertically. The bezel defines an opening (320) and a plurality of receiving grooves (324). The dustcover member comprises a dustcover (42) movably mounted to the bezel and a frame (44). The frame is rotatablely attached to the bezel, for driving the dustcover to slide downwardly to a lower position along the receiving grooves of the bezel. When the dustcover is in the upper position, the dustcover is received in the opening of the bezel. When the dustcover is in the lower position, the opening is open for the tray sliding into or out of the bezel.Type: ApplicationFiled: December 23, 2004Publication date: October 27, 2005Applicant: HON HAI Precision Industry CO., LTD.Inventors: Yun-Lung Chen, Quan-Guang Du, Chang-Jiang Hou
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Publication number: 20040141957Abstract: This invention relates to the discovery that an intermediate, differentiated stage of pancreatic stem cells exist that can be propagated in a stable manner in successive serial passaging while maintaining insulin production in response to glucose. These cells are advantageous in that they are both expandable and stable in culture and can driven to late stage development, i.e. prototype islet cells. This invention further provides for culturing techniques that select for these intermediate differentiated stage cells and selectively eliminates early or late stage pancreatic cells.Type: ApplicationFiled: February 10, 2004Publication date: July 22, 2004Applicant: AmCyte, Inc.Inventors: Wen-Ghih Tsang, Tianli Zheng, Chang Jiang Huang
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Patent number: 6759039Abstract: This invention relates to the discovery that an intermediate, differentiated stage of pancreatic stem cells exist that can be propagated in a stable manner in successive serial passaging while maintaining insulin production in response to glucose. These cells are advantageous in that they are both expandable and stable in culture and can driven to late stage development, i.e. prototype islet cells. This invention further provides for culturing techniques that select for these intermediate differentiated stage cells and selectively eliminates early or late stage pancreatic cells.Type: GrantFiled: June 29, 2001Date of Patent: July 6, 2004Assignee: AmCyte, Inc.Inventors: Wen-Ghih Tsang, Tianli Zheng, Chang Jiang Huang
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Publication number: 20020081725Abstract: This invention relates to the discovery that an intermediate, differentiated stage of pancreatic stem cells exist that can be propagated in a stable manner in successive serial passaging while maintaining insulin production in response to glucose. These cells are advantageous in that they are both expandable and stable in culture and can driven to late stage development, i.e. prototype islet cells. This invention further provides for culturing techniques that select for these intermediate differentiated stage cells and selectively eliminates early or late stage pancreatic cells.Type: ApplicationFiled: June 29, 2001Publication date: June 27, 2002Inventors: Wen-Ghih Tsang, Tianli Zheng, Chang Jiang Huang
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Patent number: D509220Type: GrantFiled: July 27, 2004Date of Patent: September 6, 2005Assignee: Hon Hai Precision Ind. Co., Ltd.Inventors: Yun Lung Chen, Qing Hua Huang, Chang Jiang Hou