Patents by Inventor Kuo-Hsien LU

Kuo-Hsien LU 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: 20190206065
    Abstract: A method, a system, and a computer-readable recording medium for image object tracking are provided. A video stream including a previous frame and a current frame is received, wherein the video stream is generated through photographing a space including a moving object by an image capturing device. A moving posture of the moving object determined according to the previous frame is obtained. Whether the moving posture of the moving object is a movement along a first direction or a movement along a second direction is determined. One of different tracking algorithms is selected for performing object tracking according to whether the moving posture of the moving object is the movement along the first direction or the movement along the second direction, to obtain an object feature region associated with the moving object in the current frame. The moving object in the space is tracked according to the object feature region.
    Type: Application
    Filed: April 27, 2018
    Publication date: July 4, 2019
    Applicant: Wistron Corporation
    Inventors: Ting-Feng Ju, Kuo-Hsien Lu
  • Publication number: 20190156138
    Abstract: A method, a system, and a computer-readable recording medium for image-based object tracking are provided. The method includes following steps. A video stream including a plurality of images is received. The video stream is generated through photographing an enclosed space by an image capturing device, and a moving range of a plurality of observed objects is limited to the enclosed space. A plurality of moving objects are detected from the video stream, and frames associated with each of the moving objects are generated for the images. The images include a current image and a previous image. By analyzing position projecting relationship between current frames in the current image and previous frames in the previous image, linking relationship between the current frames in the current image and the observed objects is established. The observed objects in the enclosed space are tracked according to the established linking relationship.
    Type: Application
    Filed: March 12, 2018
    Publication date: May 23, 2019
    Applicant: Wistron Corporation
    Inventors: Ting-Feng Ju, Kuo-Hsien Lu, Bo-Yi Wu
  • Publication number: 20180302683
    Abstract: Methods for supplying, ordering, and transacting items based on motion images are proposed. The methods are applicable to a server and include the following steps. A first video stream is received from a first electronic device, and at least one item is identified from the first video stream to generate a frame and a tag associated with each item. An editing operation on a first tag is received from the first electronic device to generate first tag data. The first tag and the first frame are combined into the first video stream to generate a composite video stream. The composite video stream is transmitted to a second electronic device. In response to an ordering operation detected on the first item from the second electronic device, first ordering data is generated according to the first tag data to add the first item into an order list of the second electronic device.
    Type: Application
    Filed: August 15, 2017
    Publication date: October 18, 2018
    Applicant: Wistron Corporation
    Inventors: Kuo-Hsien Lu, Yu-Yen Chen, Yen-Kai Chiu
  • Patent number: 10037107
    Abstract: An optical touch device and a sensing method thereof are provided. The optical touch device includes a plurality of optical sensors and a processing unit. The optical sensors are arranged around a touch plane and are spaced from each other. The two adjacent optical sensors located at one side of the touch plane are defined as one set of an optical sensing module, such that the optical sensors are paired to form multiple sets of the optical sensing modules. The processing unit generates a plurality of touch coordinates data corresponding to the plurality sets of the optical sensing modules according to the optical touch data, and determines whether the touch coordinates data corresponding to each set of the optical sensing modules is in at least one touch-excluded area corresponding to each set of the optical sensing modules, and respectively excludes the touch coordinates data in the touch-excluded area.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: July 31, 2018
    Assignee: Wistron Corporation
    Inventors: Bo-Yi Wu, Yu-Yen Chen, Kuo-Hsien Lu, Wei-Kuo Kan, Kuo-Ting Huang, Ching-An Cho, Chih-Hao Chiu, Chan-Hsuan Yu, You-Jyun Syu
  • Patent number: 9977531
    Abstract: An optical touch apparatus configured to sense a touch operation of an optical touch stylus is provided. The optical touch apparatus includes a touch operation surface, an optical sensor and a touch controller. The optical touch stylus performs the touch operation on the touch operation surface. The optical sensor is disposed on a side of the touch operation surface and senses the light beam from the touch operation to obtain sensing data. The sensing data include an image of the optical touch stylus and a mirror image generated on the touch operation surface by the optical touch stylus. The touch controller is electrically connected to the optical sensor and calculates a brightness threshold according to the sensing data. The touch controller determines a position of the touch indicator point of the optical touch stylus on the touch operation surface according to the sensing data and the brightness threshold.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: May 22, 2018
    Assignee: Wistron Corporation
    Inventor: Kuo-Hsien Lu
  • Patent number: 9727172
    Abstract: A method for defining effective pixels in an image sensing array of a light-shading optical touch system is proposed. First, light-shading objects are disposed at three end points of a touch panel, and a shaded image is generated by an image sensing array. Light-shading object pixels corresponding to the light-shading objects are obtained from the shaded image thereafter. Next, the light-shading objects are removed from the touch panel, and a non-shaded image is generated by the image sensing array. Three pixel columns corresponding to the end points are obtained from the non-shaded image, and a pixel with maximum intensity is obtained from each of the three pixel columns. Interpolated pixels between the three brightest pixels are obtained through interpolation from the non-shaded image. Image sensing pixels corresponding to the three brightest pixels and the interpolated pixels in the image sensing array are defined as effective pixels.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: August 8, 2017
    Assignee: Wistron Corporation
    Inventors: Kuo-Hsien Lu, Yu-Yen Chen
  • Publication number: 20170212627
    Abstract: An optical touch apparatus configured to sense a touch operation of an optical touch stylus is provided. The optical touch apparatus includes a touch operation surface, an optical sensor and a touch controller. The optical touch stylus performs the touch operation on the touch operation surface. The optical sensor is disposed on a side of the touch operation surface and senses the light beam from the touch operation to obtain sensing data. The sensing data include an image of the optical touch stylus and a mirror image generated on the touch operation surface by the optical touch stylus. The touch controller is electrically connected to the optical sensor and calculates a brightness threshold according to the sensing data. The touch controller determines a position of the touch indicator point of the optical touch stylus on the touch operation surface according to the sensing data and the brightness threshold.
    Type: Application
    Filed: March 2, 2016
    Publication date: July 27, 2017
    Inventor: Kuo-Hsien Lu
  • Patent number: 9575613
    Abstract: A touch-sensing apparatus includes a signal-receiving module and a control unit. The signal-receiving module includes a mechanical wave-receiving unit and an electromagnetic wave-receiving unit. The mechanical wave-receiving unit is configured to receive a mechanical wave signal actively emitted by a touch object. The electromagnetic wave-receiving unit, adjacent to the mechanical wave-receiving unit, is configured to receive an electromagnetic wave signal actively emitted by the touch object. The control unit is electrically connected to the mechanical wave-receiving unit and the electromagnetic wave-receiving unit, and decides an azimuth angle and a distance of the touch object on a sensing surface with respect to the signal-receiving module according to the electromagnetic wave signal and the mechanical wave signal, and decides a position of the touch object on the sensing surface according to the azimuth angle and the distance. A touch system and a touch-detection method are also provided.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: February 21, 2017
    Assignee: Wistron Corporation
    Inventor: Kuo-Hsien Lu
  • Publication number: 20160378266
    Abstract: An optical touch apparatus and a width detecting method thereof are provided. The optical touch apparatus includes at least two sensing components, a light emitting component, and a width detecting module. The sensing components are configured to sense a touch object located on a touch plane. The light emitting component is configured to be a light source of the touch plane and is disposed adjacent to one of the sensing components. The width detecting module is coupled to the light emitting component and the other of the sensing components. The light emitting component is controlled by the width detecting module to emit a light. The other of the sensing components is controlled by the width detecting module to sense intensity of the light. The width detecting module detects a distance between the sensing components according to the sensed intensity of the light.
    Type: Application
    Filed: October 2, 2015
    Publication date: December 29, 2016
    Inventors: Kuo-Hsien Lu, Yu-Yen Chen
  • Publication number: 20160334937
    Abstract: An optical touch device and a sensing method thereof are provided. The optical touch device includes a plurality of optical sensors and a processing unit. The optical sensors are arranged around a touch plane and are spaced from each other. The two adjacent optical sensors located at one side of the touch plane are defined as one set of an optical sensing module, such that the optical sensors are paired to form multiple sets of the optical sensing modules. The processing unit generates a plurality of touch coordinates data corresponding to the plurality sets of the optical sensing modules according to the optical touch data, and determines whether the touch coordinates data corresponding to each set of the optical sensing modules is in at least one touch-excluded area corresponding to each set of the optical sensing modules, and respectively excludes the touch coordinates data in the touch-excluded area.
    Type: Application
    Filed: August 10, 2015
    Publication date: November 17, 2016
    Inventors: Bo-Yi Wu, Yu-Yen Chen, Kuo-Hsien Lu, Wei-Kuo Kan, Kuo-Ting Huang, Ching-An Cho, Chih-Hao Chiu, Chan-Hsuan Yu, You-Jyun Syu
  • Patent number: 9442604
    Abstract: An optical-touch calibration method and an optical-touch panel are disclosed herein. The optical-touch calibration method is suitable for the optical-touch panel including a projective light source and a line optical sensor. The optical-touch calibration method includes steps of: generating a projective beam by the projective light source, and the projective beam being reflected to the line optical sensor; utilizing the line optical sensor to measure the reflected projective beam for obtaining a reflected intensity curve relative to a linear coordinate axis; calculating an intensity difference between the reflected intensity curve and a reference intensity curve; and, adjusting an emitting power of the projective light source if the intensity difference exceeds a threshold value.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: September 13, 2016
    Assignee: WISTRON CORP.
    Inventors: Kuo-Hsien Lu, Yu-Yen Chen
  • Publication number: 20160188118
    Abstract: A method for defining effective pixels in an image sensing array of a light-shading optical touch system is proposed. First, light-shading objects are disposed at three end points of a touch panel, and a shaded image is generated by an image sensing array. Light-shading object pixels corresponding to the light-shading objects are obtained from the shaded image thereafter. Next, the light-shading objects are removed from the touch panel, and a non-shaded image is generated by the image sensing array. Three pixel columns corresponding to the end points are obtained from the non-shaded image, and a pixel with maximum intensity is obtained from each of the three pixel columns. Interpolated pixels between the three brightest pixels are obtained through interpolation from the non-shaded image. Image sensing pixels corresponding to the three brightest pixels and the interpolated pixels in the image sensing array are defined as effective pixels.
    Type: Application
    Filed: April 14, 2015
    Publication date: June 30, 2016
    Inventors: Kuo-Hsien Lu, Yu-Yen Chen
  • Patent number: 9360964
    Abstract: An optical touch apparatus and an optical touch method are disclosed. The optical touch apparatus comprises a touch panel, a first optical sensor, a second optical sensor and a processor. The first optical sensor senses a light pen to output a first sensing signal. The second optical sensor senses the light pen to output a second sensing signal. The processor decides a threshold value according to the second sensing signal, and determines whether the first sensing signal is greater than the threshold value. The processor determines that the light pen touches the touch panel if the first sensing signal is greater than the threshold value.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: June 7, 2016
    Assignee: WISTRON CORPORATION
    Inventors: Kuo-Hsien Lu, Ching-An Cho, Yu-Yen Chen, Chia-Ta Hsieh
  • Patent number: 9342190
    Abstract: An optical touch apparatus including a light source module, two optical sensing modules and a processing unit is provided. The light source module provides a touch light source for a touch area. The optical sensing modules are disposed corresponding to two corners of the touch area. The processing unit is coupled to the light source module and the optical sensing modules, and controls the light source module to provide the touch light source in a first touch mode and a second touch mode and stop providing the touch light source in a third touch mode. Each of the optical sensing modules continuously senses and outputs a plurality of sensing signals. The processing unit determines a plurality of touching features of the sensing signals respectively to calculate positions of a plurality of touching objects on the touch area. An optical touch method is also provided.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: May 17, 2016
    Assignee: Wistron Corporation
    Inventors: Kuo-Hsien Lu, Yu-Yen Chen
  • Publication number: 20160085345
    Abstract: A touch-sensing apparatus includes a signal-receiving module and a control unit. The signal-receiving module includes a mechanical wave-receiving unit and an electromagnetic wave-receiving unit. The mechanical wave-receiving unit is configured to receive a mechanical wave signal actively emitted by a touch object. The electromagnetic wave-receiving unit, adjacent to the mechanical wave-receiving unit, is configured to receive an electromagnetic wave signal actively emitted by the touch object. The control unit is electrically connected to the mechanical wave-receiving unit and the electromagnetic wave-receiving unit, and decides an azimuth angle and a distance of the touch object on a sensing surface with respect to the signal-receiving module according to the electromagnetic wave signal and the mechanical wave signal, and decides a position of the touch object on the sensing surface according to the azimuth angle and the distance. A touch system and a touch-detection method are also provided.
    Type: Application
    Filed: January 5, 2015
    Publication date: March 24, 2016
    Inventor: Kuo-Hsien Lu
  • Patent number: 9285928
    Abstract: An optical touch system includes a touch screen; a plurality of light sources for periodically emitting light; a light-emitting element for periodically emitting light when the plurality of light sources are not emitting light; a light-reflecting element, for reflecting light emitted by the plurality of light sources; a plurality of lenses, for capturing a first image during a period when the plurality of light sources are emitting light and capturing a second image during a period when the plurality of light sources are not emitting light; and a processing unit. The processing unit includes a control unit for controlling the plurality of light sources and the light-emitting element; and a computation unit for computing a first location in which the light-emitting element is located and a second location in which the light-reflecting element is located on the touch screen according to the first image and the second image.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: March 15, 2016
    Assignee: Wistron Corporation
    Inventors: Chia-Ta Hsieh, Yu-Yen Chen, Kuo-Hsien Lu
  • Publication number: 20160062691
    Abstract: A memory management method includes: performing a first-level collection operation upon first storage units in a memory pool allocated in a memory device; and after the first storage units are processed by the first-level collection operation, performing a second-level collection operation upon second storage units in the memory pool allocated in the memory device, wherein one of the first-level collection operation and the second-level collection operation is a page-level collection operation, and another of the first-level collection operation and the second-level collection operation is a bank-level collection operation.
    Type: Application
    Filed: March 13, 2015
    Publication date: March 3, 2016
    Inventors: Chin-Wen Chang, Hsueh-Bing Yen, Hung-Lin Chou, Kuo-Hsien Lu, Kuang-Ting Chien, Chih-Chieh Liu, Nicholas Ching Hui Tang
  • Patent number: 9207811
    Abstract: An optical imaging system includes a display panel, a light source module, a touch object, a first image capturing module, a second image capturing module and a control module. The touch object moves from a first position at a first time to a second position at a second time. The first image capturing module and the second image capturing module respectively capture light reflected from the touch object, so as to generate a first signal, a second signal, a third signal and a fourth signal corresponding to the touch object at the first time and the second time. The control module computes a moving direction of the touch object according to variation of the first signal, the second signal, the third signal and the fourth signal.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: December 8, 2015
    Assignee: Wistron Corporation
    Inventors: Chia-Chang Hou, Po-Liang Huang, Kuo-Hsien Lu
  • Publication number: 20150338996
    Abstract: An optical touch system includes a touch screen; a plurality of light sources for periodically emitting light; a light-emitting element for periodically emitting light when the plurality of light sources are not emitting light; a light-reflecting element, for reflecting light emitted by the plurality of light sources; a plurality of lenses, for capturing a first image during a period when the plurality of light sources are emitting light and capturing a second image during a period when the plurality of light sources are not emitting light; and a processing unit. The processing unit includes a control unit for controlling the plurality of light sources and the light-emitting element; and a computation unit for computing a first location in which the light-emitting element is located and a second location in which the light-reflecting element is located on the touch screen according to the first image and the second image.
    Type: Application
    Filed: August 18, 2014
    Publication date: November 26, 2015
    Inventors: Chia-Ta Hsieh, Yu-Yen Chen, Kuo-Hsien Lu
  • Publication number: 20150309647
    Abstract: An optical touch apparatus and an optical touch method are disclosed. The optical touch apparatus comprises a touch panel, a first optical sensor, a second optical sensor and a processor. The first optical sensor senses a light pen to output a first sensing signal. The second optical sensor senses the light pen to output a second sensing signal. The processor decides a threshold value according to the second sensing signal, and determines whether the first sensing signal is greater than the threshold value. The processor determines that the light pen touches the touch panel if the first sensing signal is greater than the threshold value.
    Type: Application
    Filed: November 20, 2014
    Publication date: October 29, 2015
    Inventors: Kuo-Hsien Lu, Ching-An Cho, Yu-Yen Chen, Chia-Ta Hsieh