Patents by Inventor Chih-Ming Chang

Chih-Ming 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).

  • Publication number: 20190235522
    Abstract: An auto guided vehicle system adapting for carrying an object is provided. The auto guided vehicle system includes a plurality of auto guided vehicles. Each of the auto guided vehicles has a vehicle body and an omnidirectional wheel set, and further includes a driving device, a wireless communication module, and a processing device. The driving device drives the omnidirectional wheel set. The wireless communication module communicates with a control module of an electric device. The processing device transmits a position information to the control module through the wireless communication module. The control module determines an arrangement pattern of the auto guided vehicles on a movement plane according to an object information and the respective position information of the auto guided vehicles, such that the auto guided vehicles carry and transport the object in the arrangement pattern. Besides, an operating method is also provided.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 1, 2019
    Applicant: Metal Industries Research & Development Centre
    Inventors: Kuang-Shine Yang, Chih-Ming Chang, Chih-Ming Chiou
  • Publication number: 20190061265
    Abstract: A calibration method for compensating a home position of a 3D printer is disclosed. According to a movement position of a movable mechanism of the 3D printer, a control voltage is provided to a microcontroller. The calibration method includes steps as follows. The movable mechanism moves in a home direction. It is to determine whether the microcontroller receives a first logic level signal which is transited according to the corresponding control voltage. If yes, the movable mechanism moves in a direction opposite to the home direction. It is to determine whether the microcontroller receives a second logic level signal which is transited according to the corresponding control voltage. If yes, the movable mechanism moves a compensation distance corresponding to a step compensation amount in the home direction. Therefore, the calibration method is provided to reduce circuit costs, simplify designs of control circuits, and accurately calibrate the home position.
    Type: Application
    Filed: December 4, 2017
    Publication date: February 28, 2019
    Inventors: Kwan HO, Chien-Ying Huang, Chih-Ming Chang, Chih-Hao Lee, Hung-Tang Teng, Chung-Chih Yang
  • Publication number: 20190022933
    Abstract: An intermittent excitation apparatus of a 3D printer includes at least one guide, a drive rod, a movable seat, and a microcontroller. When the microcontroller controls a first motor in a non-excitation and non-rotation condition, the movable seat is fixed on the drive rod and the 3D printer performs a plane printing operation. When the microcontroller controls the first motor in an excitation and rotation condition, the movable seat moves along the drive rod. Therefore, it is to significantly reduce heat generated inside the first motor, decrease costs, and reduce the size of the 3D printer.
    Type: Application
    Filed: October 2, 2017
    Publication date: January 24, 2019
    Inventors: Kwan HO, Chien-Ying HUANG, Chih-Ming CHANG, Chih-Hao LEE, Hung-Tang TENG, Chung-Chih YANG, Chi-Wen HSIEH
  • Patent number: 10097214
    Abstract: An error correcting method is provided, which includes the following steps. An error value is obtained. The error value is substituted into an error correcting function, so that the error correcting function causes the error value to converge to 0 in a finite time. The error correcting function conforms to a non-Lipschitzian characteristic. An embodiment of the disclosure solves the problem in traditional system stability analysis through a differential equation, adjusts parameters to determine a convergence time, and ensures that a convergence target fully conforms to an expected value and that a unique solution of the error value is 0.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: October 9, 2018
    Assignee: Metal Industries Research & Development Centre
    Inventors: Chih-Ming Chang, Kuang-Shine Yang, Ho-Chung Fu, Ying-Cherng Lu
  • Patent number: 10029423
    Abstract: A printing correction method and a 3D printing device are provided, and the printing correction method is adapted to the 3D printing device having a printing platform. The printing correction method is as follows. An electric field is provided to the printing platform. A detection probe is extended towards a position of the printing platform along a first axial direction to enter the electric field, where the position is defined as an initial position. The detection probe is moved from the initial position along a moving path on the printing platform, and when the detection probe is moved along the moving path, an electric field variation is detected to determine a tilt variation of the printing platform relative to the first axial direction. It is determined whether to correct the printing platform according to the tilt variation of the printing platform.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: July 24, 2018
    Assignees: XYZprinting, Inc., Kinpo Electronics, Inc., Cal-Comp Electronics & Communications Company Limited
    Inventors: Chih-Ming Chang, Tzu-Yu Chen
  • Patent number: 10003485
    Abstract: A system for synchronizing lighting effect patterns of interactive lighting effect devices at a remote location with respect to those at local location is disclosed herein. Synchronized lighting effects produced at the remote location while watching a lighting effect show using other interactive lighting effect devices illuminated according to a script at event venue, can be achieved. Such synchronized lighting effects obtained at remote location generate a corresponding virtual simulated perception of attending same concert venue live when watching a live streaming video thereof. Low latency between lighting effect changes are produced at remote location with respect to those observed in concert venue live streaming video due to method of color control signal generation along with usage of color control pattern blending module that creates a blended video frame comprising of a color control pattern, which allows for efficient lighting effect pattern generation at remote location.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: June 19, 2018
    Assignee: LUMIC TECHNOLOGY INC.
    Inventors: Ying-Ko Lu, Ta-Wei Huang, Ta-Jen Lin, Chih-Ming Chang, Wen-Chih Wang
  • Patent number: 9913344
    Abstract: Interactive lighting effect devices configured by an interactive lighting effect control system in an automated wireless manner on a mass scale are provided. RF data bursts are captured to illuminate interactive lighting effect devices selectively in accordance with a matched data. The matched data is formed by combining a pattern-related data of lighting effect extracted from a QR code of the event ticket with an identification address extracted from a QR code of the interactive lighting effect device, the pattern-related data of lighting effect includes a zone code. Improvisational illuminating color control change for any zone assignment for color control signal can be generated and converted to set of RGB color codes to be transmitted by the interactive lighting effect control system for broadcasting as data bursts to the interactive lighting effect devices. Different types of data acquisition interfaces are provided for obtaining the matched data.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: March 6, 2018
    Assignee: LUMIC TECHNOLOGY INC.
    Inventors: Ying-Ko Lu, Ta-Wei Huang, Ta-Jen Lin, Chih-Ming Chang, Wen-Chih Wang
  • Publication number: 20180049287
    Abstract: A system for synchronizing lighting effect patterns of interactive lighting effect devices at a remote location with respect to those at local location is disclosed herein. Synchronized lighting effects produced at the remote location while watching a lighting effect show using other interactive lighting effect devices illuminated according to a script at event venue, can be achieved. Such synchronized lighting effects obtained at remote location generate a corresponding virtual simulated perception of attending same concert venue live when watching a live streaming video thereof. Low latency between lighting effect changes are produced at remote location with respect to those observed in concert venue live streaming video due to method of color control signal generation along with usage of color control pattern blending module that creates a blended video frame comprising of a color control pattern, which allows for efficient lighting effect pattern generation at remote location.
    Type: Application
    Filed: October 23, 2017
    Publication date: February 15, 2018
    Inventors: YING-KO LU, TA-WEI HUANG, TA-JEN LIN, CHIH-MING CHANG, WEN-CHIH WANG
  • Publication number: 20170290153
    Abstract: A connecting structure for printed circuit boards has two printed circuit boards. At least one of the two printed circuit boards is a flexible printed circuit board, and each one of the two printed circuit boards has at least one connecting portion. The at least one connecting portion protrudes from an end of the printed circuit board, and is soldered on a top surface of the other printed circuit board. Each of the printed circuit boards is attached to the other printed circuit board only by a part (connecting portion), such that the solders on the connecting portion can extend forward and in two transverse directions beyond the connecting portion, thereby increasing the contact area between the solder and the top surface of the other printed circuit board. Therefore, the connecting structure can firmly connect two printed circuit boards and can enhance the resistance to pull.
    Type: Application
    Filed: March 30, 2016
    Publication date: October 5, 2017
    Inventors: Chih-Ming CHANG, Chiu-Mei LIAO
  • Patent number: 9715234
    Abstract: A multiple rotors aircraft and a control method thereof are provided. The control method comprises the following steps. First, current motion information of the multiple rotors aircraft is obtained. Then, at least one control gain is adjusted through a gain adjustment function according to the current motion information. The gain adjustment function conforms to a non-Lipschitzian characteristic, and at least one rotor of the multiple rotors aircraft is controlled according to the control gain. Therefore, the multiple rotors aircraft would be ensured that its flight attitude is toward a target position, and the expected result would be conformed rapidly.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: July 25, 2017
    Assignee: Metal Industries Research & Development Centre
    Inventors: Chih-Ming Chang, Kuang-Shine Yang, Ho-Chung Fu, Ying-Cherng Lu, Chih-Ming Chiou
  • Patent number: 9688026
    Abstract: A heating platform including a substrate, a heating plate, a conducting plate and a temperature sensing element is provided. The substrate has a first surface for forming a three dimensional (3D) object and an opposite second surface. The heating plate is attached to the second surface of the substrate to heat the substrate. The conducting plate is attached to the heating plate, and the heating plate is coved between the substrate and the conducting plate, wherein the area of the conducting plate is smaller than the area of the substrate, and an end of the conducting plate extends to the outer of the heating plate. The temperature sensing element is disposed at the end of the conducting plate extending to the outer of the heating plate to sense the temperature of the substrate through the conducting plate. A 3D printing apparatus including the heating platform aforementioned is also provided.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: June 27, 2017
    Assignees: XYZprinting, Inc., Kinpo Electronics, Inc., Cal-Comp Electronics & Communications Company Limited
    Inventors: Kwan Ho, Chih-Ming Chang
  • Publication number: 20170153650
    Abstract: A multiple rotors aircraft and a control method thereof are provided. The control method comprises the following steps. First, current motion information of the multiple rotors aircraft is obtained. Then, at least one control gain is adjusted through a gain adjustment function according to the current motion information. The gain adjustment function conforms to a non-Lipschitzian characteristic, and at least one rotor of the multiple rotors aircraft is controlled according to the control gain. Therefore, the multiple rotors aircraft would be ensured that its flight attitude is toward a target position, and the expected result would be conformed rapidly.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 1, 2017
    Inventors: Chih-Ming Chang, Kuang-Shine Yang, Ho-Chung Fu, Ying-Cherng Lu, Chih-Ming Chiou
  • Publication number: 20170155410
    Abstract: An error correcting method is provided, which includes the following steps. An error value is obtained. The error value is substituted into an error correcting function, so that the error correcting function causes the error value to converge to 0 in a finite time. The error correcting function conforms to a non-Lipschitzian characteristic. An embodiment of the disclosure solves the problem in traditional system stability analysis through a differential equation, adjusts parameters to detei nine a convergence time, and ensures that a convergence target fully conforms to an expected value and that a unique solution of the error value is 0.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 1, 2017
    Inventors: Chih-Ming Chang, Kuang-Shine Yang, Ho-Chung Fu, Ying-Cherng Lu
  • Publication number: 20170154476
    Abstract: An information backing up method and system are provided. The information backing up system at least includes a moving vehicle and a server. The moving vehicle obtains its external information and internal information, establishes a transmitting connection with the server through a machine-to-machine (M2M) protocol, and transmits the external information and the internal information to the server through the transmitting connection. In addition, the information backing up system may further include a network gateway device, so that the moving vehicle can perform an information backup procedure through the network gateway device.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 1, 2017
    Inventors: Chih-Ming Chang, Kuang-Shine Yang, Ho-Chung Fu, Ying-Cherng Lu, Chih-Ming Chiou
  • Patent number: 9665984
    Abstract: Method to create try-on experience wearing virtual 3D eyeglasses is provided using 2D image data of eyeglasses. Virtual 3D eyeglasses are constructed using set of 2D images for eyeglasses. Virtual 3D eyeglasses is configured onto 3D face or head model and being simulated as being fittingly worn by the wearer. Each set of 2D images for eyeglasses includes a pair of 2D lens images, a frontal frame image, and at least one side frame image. Upon detection of a movement of the face and head of wearer in real-time, the 3D face or head model and the configuration and alignment of virtual 3D eyeglasses are modified or adjusted accordingly. Features such as trimming off of portion of the glasses frame, shadow creating and environment mapping are provided to the virtual 3D eyeglasses in response to translation, scaling, and posture changes made to the head and face of the wearer in real-time.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: May 30, 2017
    Assignee: ULSee Inc.
    Inventors: Zhou Ye, Chih-Ming Chang, Ying-Ko Lu, Yi-Chia Hsu
  • Publication number: 20170135165
    Abstract: Interactive lighting effect devices configured by an interactive lighting effect control system in an automated wireless manner on a mass scale are provided. RF data bursts are captured to illuminate interactive lighting effect devices selectively in accordance with a matched data. The matched data is formed by combining a pattern-related data of lighting effect extracted from a QR code of the event ticket with an identification address extracted from a QR code of the interactive lighting effect device, the pattern-related data of lighting effect includes a zone code. Improvisational illuminating color control change for any zone assignment for color control signal can be generated and converted to set of RGB color codes to be transmitted by the interactive lighting effect control system for broadcasting as data bursts to the interactive lighting effect devices. Different types of data acquisition interfaces are provided for obtaining the matched data.
    Type: Application
    Filed: January 24, 2017
    Publication date: May 11, 2017
    Inventors: YING-KO LU, TA-WEI HUANG, TA-JEN LIN, CHIH-MING CHANG, WEN-CHIH WANG
  • Publication number: 20170050380
    Abstract: A printing correction method and a 3D printing device are provided, and the printing correction method is adapted to the 3D printing device having a printing platform. The printing correction method is as follows. An electric field is provided to the printing platform. A detection probe is extended towards a position of the printing platform along a first axial direction to enter the electric field, where the position is defined as an initial position. The detection probe is moved from the initial position along a moving path on the printing platform, and when the detection probe is moved along the moving path, an electric field variation is detected to determine a tilt variation of the printing platform relative to the first axial direction. It is determined whether to correct the printing platform according to the tilt variation of the printing platform.
    Type: Application
    Filed: December 31, 2015
    Publication date: February 23, 2017
    Inventors: Chih-Ming Chang, Tzu-Yu Chen
  • Publication number: 20160372257
    Abstract: The present invention provides a novel stacked inductor and an electronic component module having the novel stacked inductor, wherein the multilayer stacked inductor is fabricated by stacking a top magnetic material layer, a plurality of first middle magnetic material layers, at least one second middle magnetic material layer, at least one non-magnetic material layer, and a bottom magnetic material layer. In the present invention, a second metal layer formed on the non-magnetic material layer and a first metal layer formed on the first middle magnetic material layer have a first line width ratio, and a third metal layer formed on the second middle magnetic material layer and the first metal layer have a second line width ratio. Therefore, the DC resistance and the quality factor of this novel multilayer stacked inductor can be optimized based on the first and second line width ratio.
    Type: Application
    Filed: June 17, 2015
    Publication date: December 22, 2016
    Inventors: CHIN-LI WANG, CHIH-MING CHANG
  • Patent number: 9482586
    Abstract: A heating control apparatus and a control method thereof are provided. The heating control apparatus includes a heating module, a temperature sensing module, a pulse width modulation circuit, and a comparator. Input terminals of the comparator are respectively coupled to the temperature sensing module and the pulse width modulation circuit, and an output terminal of the comparator is coupled to the heating module. In the control method, a heating temperature of the heating module is sensed by the temperature sensing module, so as to provide a temperature sensing signal. The comparator receives the temperature sensing signal and a pulse width modulation signal generated by the pulse width modulation circuit and compares the temperature sensing signal and the pulse width modulation signal to generate a comparing pulse width modulation signal, so as to control the heating temperature of the heating module by using the comparing pulse width modulation signal.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: November 1, 2016
    Assignees: XYZprinting, Inc., Kinpo Electronics, Inc., Cal-Comp Electronics & Communications Company Limited
    Inventors: Ju-Chou Chen, Chih-Ming Chang
  • Patent number: 9338912
    Abstract: An electronic device holder used to be fixed on a moving carrier for holding an electronic device is provided. The electronic device holder includes a holder, a fixing element, a moving unit and at least one first connector. The fixing element fixed on the holder has a first limiting structure. The moving unit disposed between the holder and the fixing element moves relative to the holder. The moving unit has a second limiting structure used to lock with the first limiting structure for fixing the moving unit on a lock position or an open position. The first connector is disposed on the moving unit and used to connect with a second connector when the moving unit is located on the lock position relative to the holder. The electronic device holder integrates functions of holding and charging for the electronic device.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: May 10, 2016
    Assignee: ASKEY COMPUTER CORP.
    Inventors: Chih-Ming Chang, Sung-Chin Wu