Patents by Inventor Chii-How Chang

Chii-How Chang 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).

  • Patent number: 10119561
    Abstract: A latch module includes a fixing member and a sliding member. A first surface of the fixing member is configured to align and engage with a mounting surface of a detachable device. A sliding unit of the sliding member is relative to a guiding unit of the fixing member and allows the sliding member to slide linearly with respect to the fixing member. The sliding member includes a pushing portion corresponding to a switching column on a resilient arm of the fixing member. While the sliding member is slid to a first position, the switching column is away from the pushing portion and a convex portion of the resilient arm tends to push against the mounting surface. While the sliding member is slid to a second position, the pushing portion pushes the switching column to drive the convex portion away from the mounting surface.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: November 6, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chii-How Chang, Yao-Ju Peng
  • Patent number: 8789378
    Abstract: A magnetic flux detection apparatus and a system with the magnetic flux detection apparatus are provided. The magnetic flux detection apparatus includes the magnetic material, at least one heated or cooled magneto caloric effect material (MCEM), a permanent magnetic element, at least one magnetic sensing element, and at least one amount of magnetic flux or magnetic flux path. The heated or cooled magneto caloric effect material is disposed to the magnetic material. The amount of magnetic flux or magnetic flux path is formed and passing through the permanent magnetic element, the cooled magneto caloric effect material, and the first portion of the magnetic material. A magnetic sensing element senses the amount of the magnetic flux or the magnetic flux path for outputting a sensing voltage and a corresponding sensing voltage value so as to apply the best thermal energy-applying algorithm into the magnetic system to output power efficiently.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: July 29, 2014
    Assignee: Delta Electronics, Inc.
    Inventors: Shao Hsiung Chang, Chii-How Chang
  • Patent number: 8646280
    Abstract: The invention discloses a heat-power conversion magnetism device. The heat-power conversion magnetism device includes a magneto caloric effect material so that the magnetic field thereof can be changed according to the temperature difference. The heat-power conversion magnetism device rotates by changing the magnetic field of the magneto caloric effect material.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: February 11, 2014
    Assignee: Delta Electronics, Inc.
    Inventors: Shao Hsiung Chang, Chii-How Chang
  • Patent number: 8453466
    Abstract: The invention discloses a heat-power conversion magnetism device. The heat-power conversion magnetism device includes a magneto caloric effect material so that the magnetic field thereof can be changed according to a temperature difference. The heat-power conversion magnetism device is rotated by changing the magnetic field of the magneto caloric effect material. A system for converting energy by use of the heat-power conversion magnetism device is also disclosed.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: June 4, 2013
    Assignee: Delta Electronics, Inc.
    Inventors: Shao Hsiung Chang, Chii-How Chang
  • Publication number: 20120139867
    Abstract: A capacitive touch apparatus includes a first touch unit, a first voltage difference retrieving unit, a first feedback signal generating unit, and a control unit. The first touch unit has a touch substrate and a first conductive layer. The first voltage difference retrieving unit is electrically connected with the first conductive layer and outputs a first voltage signal and a second voltage signal. The first feedback signal generating unit outputs a first feedback signal according to the variation of the voltage difference between the first voltage signal and the second voltage signal. The control unit receives the first feedback signal for computing the touch position and outputs a power signal to the first voltage difference retrieving unit. Hence, the capacitive touch apparatus improves the sensing speed and reduces the manufacturing cost by the simple circuit design.
    Type: Application
    Filed: November 10, 2011
    Publication date: June 7, 2012
    Inventors: Sean CHANG, Chii-How CHANG, Chin-Wei KUO
  • Publication number: 20120139560
    Abstract: A touch apparatus includes a touch unit, a detecting unit, and a compensation unit. The touch unit has a touch substrate and at least one conductive layer. The conductive layer is disposed on the touch substrate. The detecting unit is electrically connected with the conductive layer of the touch unit and outputs a driving signal to the conductive layer. A first parasitic capacitance is formed between the detecting unit and a ground. The compensation unit is electrically connected with the detecting unit and the touch unit and outputs a compensation signal to the first parasitic capacitance. Hence, the touch apparatus can eliminate the parasitic capacitance effect.
    Type: Application
    Filed: January 20, 2011
    Publication date: June 7, 2012
    Inventors: Sean CHANG, Chii-How CHANG, Chin-Wei KUO
  • Publication number: 20120032918
    Abstract: The invention provides a touch screen apparatus. The touch screen apparatus, applied to a touch panel, includes an indicating device and a processing module. The indicating device comprises a signal generating module and a conductive touch end, wherein the touch end touches the touch panel, and the signal generating module, electrically connecting with the touch end, generates an electric signal transmitted through the touch end. The processing module electrically connects with the touch panel to detect the electric signal, and calculates a contact position between the touch end and the touch panel according to the electric signal.
    Type: Application
    Filed: October 14, 2011
    Publication date: February 9, 2012
    Inventors: Sean CHANG, Chii-How CHANG
  • Patent number: 8107210
    Abstract: A control method of the magnetic actuator system includes the following steps. A first initial orientation step is to move a magnetic actuator to a first position in accordance with a first position signal, and generate a first position sense signal by a position sensor. A second initial orientation step is to move the magnetic actuator to a second position in accordance with a second position signal, and generate a second position sense signal by the position sensor. An orientation step is to perform an interpolation in accordance with the above signals and a target position signal to obtain a target position sense signal. A moving step is to move the magnetic actuator to an actual position in accordance with the target position signal, and output an actual position sense signal by the position sensor. An adjustment step is to move the magnetic actuator to a target position in accordance with the target position sense signal and the actual position sense signal.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: January 31, 2012
    Assignee: Delta Electronics, Inc.
    Inventors: Sean Chang, Chii-How Chang
  • Publication number: 20110067933
    Abstract: A touch-control apparatus includes a touch-control unit, a sensing unit and an auxiliary voltage supplying unit. The touch-control unit has a touch-control substrate and at least one touch-control electrode layer, which is disposed on a surface of the touch-control substrate. The sensing unit is connected with the touch-control electrode layer of the touch-control unit and outputs a charging signal according to a power signal. The auxiliary voltage supplying unit outputs an auxiliary charging signal to a sensing conductive bar of the touch-control electrode layer, so that the sensing efficiency of the touch-control apparatus can be improved due to the auxiliary charging signal.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 24, 2011
    Inventors: Sean CHANG, Chii-How CHANG
  • Publication number: 20110061399
    Abstract: The invention discloses a heat-power conversion magnetism device. The heat-power conversion magnetism device includes a magneto caloric effect material so that the magnetic filed thereof can be changed according to the temperature difference. The heat-power conversion magnetism device rotates by changing the magnetic filed of magneto caloric effect material. The magnetic field is enhanced with rotating permanent magnet.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 17, 2011
    Inventors: Shao Hsiung CHANG, Chii-How Chang
  • Publication number: 20110062821
    Abstract: The invention discloses a heat-power conversion magnetism device. The heat-power conversion magnetism device includes a magneto caloric effect material so that the magnetic field thereof can be changed according to the temperature difference. The heat-power conversion magnetism device rotates by changing the magnetic field of the magneto caloric effect material.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 17, 2011
    Inventors: Shao Hsiung CHANG, Chii-How Chang
  • Publication number: 20110063060
    Abstract: A magnetic apparatus and a magnetic system are provided. The magnetic apparatus or the magnetic system includes the magnetic apparatus that can generate the mechanical torque and at least two magnetic apparatus are coupled together to sum each mechanical torque. In addition, a phase angle delay of each of the magnetic torque of the at least two magnetic apparatus is arranged to minimize a torque ripple so as to output a power smoothly. Therefore, a better working condition of the magnetic apparatus and the whole magnetic system can be selected for demonstrating a better performance. Furthermore, a permanent magnetic element of the magnetic apparatus can rotate more smoothly.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 17, 2011
    Inventors: Shao Hsiung CHANG, Chii How Chang
  • Publication number: 20110050217
    Abstract: A magnetic flux detection apparatus and a system with the magnetic flux detection apparatus are provided. The magnetic flux detection apparatus includes the magnetic material, at least one heated or cooled magneto caloric effect material (MCEM), a permanent magnetic element, at least one magnetic sensing element, and at least one amount of magnetic flux or magnetic flux path. The heated or cooled magneto caloric effect material is disposed to the magnetic material. The amount of magnetic flux or magnetic flux path is formed and passing through the permanent magnetic element, the cooled magneto caloric effect material, and the first portion of the magnetic material. A magnetic sensing element senses the amount of the magnetic flux or the magnetic flux path for outputting a sensing voltage and a corresponding sensing voltage value so as to apply the best thermal energy-applying algorithm into the magnetic system to output power efficiently.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 3, 2011
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Shao Hsiung CHANG, Chii-How CHANG
  • Publication number: 20110048032
    Abstract: The invention discloses a heat-power conversion magnetism device. The heat-power conversion magnetism device includes a magneto caloric effect material so that the magnetic field thereof can be changed according to a temperature difference. The heat-power conversion magnetism device is rotated by changing the magnetic field of the magneto caloric effect material. A system for converting energy by use of the heat-power conversion magnetism device is also disclosed.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 3, 2011
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Shao Hsiung CHANG, Chii-How CHANG
  • Publication number: 20110012853
    Abstract: A touch panel includes a sensing layer, which has a plurality of sensing lines extending along a first direction and arranged in a row along a second direction. Each of the sensing lines individually has a first end and a second end electrically connected to a detecting circuit respectively, and the detecting circuit computes a coordinate in the first direction of a touch position in accordance with voltage variation at the first and second ends of the sensing line.
    Type: Application
    Filed: July 13, 2010
    Publication date: January 20, 2011
    Inventors: Sean Chang, Chii-How Chang
  • Patent number: 7665914
    Abstract: An iris diaphragm actuator includes a magnetic position sensing structure, at least one driving element and a light intercepting element. The magnetic position sensing structure includes a magnetic element and a magnetic sensor relatively disposed. The driving element connects and drives the magnetic element or the magnetic sensor to perform a rotating motion with respect to a rotation center such that the distance and angle between the magnetic element and the magnetic sensor are changed so as to obtain a substantially linear relation between a magnetic flux sensed by the magnetic sensor and the position of the magnetic element. Also, an arrangement method of a magnetic position sensing structure is disclosed.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: February 23, 2010
    Assignee: Delta Electronics, Inc.
    Inventor: Chii-How Chang
  • Publication number: 20090295742
    Abstract: The invention provides a touch screen apparatus. The touch screen apparatus, applied to a touch panel, includes an indicating device and a processing module. The indicating device comprises a signal generating module and a conductive touch end, wherein the touch end touches the touch panel, and the signal generating module, electrically connecting with the touch end, generates an electric signal transmitted through the touch end. The processing module electrically connects with the touch panel to detect the electric signal, and calculates a contact position between the touch end and the touch panel according to the electric signal.
    Type: Application
    Filed: September 29, 2008
    Publication date: December 3, 2009
    Inventors: Sean CHANG, Chii-How Chang
  • Patent number: 7594239
    Abstract: A magnetic actuator. The magnetic actuator comprises a first magnet, a second magnet, a first yoke, and a first coil. The second magnet is arranged axially with respect to the first magnet with repulsion therebetween. The first yoke is disposed between the first magnet and the second magnet, and the magnetic field lines produced by the first magnet and the second magnet extend from the first yoke. The first coil surrounds and corresponds to the first yoke. When a current is occurred in the first coil, the magnetic force generated between the first magnet and the second magnet will actuates the first coil to move axially with respect to the first and second magnets.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: September 22, 2009
    Assignee: Delta Electronics, Inc.
    Inventors: Chii-How Chang, Sean Chang
  • Publication number: 20090231301
    Abstract: A touch panel includes a substrate, a resistive layer, a plurality of signal terminals, a conductive circuit layer, an insulation layer and a plurality of signal lines. The substrate has a touch area and a peripheral area. The signal terminals are disposed in the peripheral area and electrically connected to the resistive layer. The conductive circuit layer is disposed in the peripheral area and electrically connected to the resistive layer. The insulation layer is disposed on the signal terminals and the conductive circuit layer. The signal lines are disposed on the insulation layer and electrically connected to signal terminals, respectively.
    Type: Application
    Filed: June 25, 2008
    Publication date: September 17, 2009
    Inventors: Sean Chang, Chii-How Chang, Yang-Lin Chen
  • Publication number: 20090140990
    Abstract: A touch panel includes a substrate, a conductive circuit layer, a resistive layer and a dielectric layer. The substrate has a touch area and a peripheral area surrounding the touch area. The conductive circuit layer is formed on the peripheral area of the substrate. The resistive layer covers the conductive circuit layer and the touch area of the substrate. The dielectric layer is formed on the resistive layer. The conductive circuit layer includes a plurality of signal terminals disposed on corner surfaces of the substrate as the corner electrodes of the conductive circuit layer.
    Type: Application
    Filed: March 21, 2008
    Publication date: June 4, 2009
    Inventors: Sean Chang, Chii-How Chang, Yang-Lin Chen