Patents by Inventor Chih-Hung Lu

Chih-Hung 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).

  • Patent number: 9176603
    Abstract: An interactive pointing device capable of switching capture ranges includes an image capturing element and a processing unit. The image capturing element is used for capturing an optical signal, and outputting an image signal. The processing unit is used for determining a switching signal, and responsible for processing and analyzing the image signal. Through the determination about the switching signal and the coordinate conversion of the image signal by an arithmetic unit, the interactive pointing device capable of switching capture ranges is enabled to be operable in hosts with different resolutions.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: November 3, 2015
    Assignee: PIXART IMAGING INC.
    Inventors: Chih Hung Lu, En Feng Hsu, Hsin Chia Chen, Chao Chien Huang, Cho Yi Lin
  • Patent number: 9052780
    Abstract: An optical touch screen system includes a touch screen, an image-sensing device, and a processing device. The image-sensing device generates a plurality of light-shielding information of an object at a plurality of time points. The processing device coupled to the image-sensing device includes a computing unit calculating a projected size difference value according to the plurality of light-shielding information, wherein the projected size difference value is a difference value between the projected sizes of the object on the touch screen at two different time points.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: June 9, 2015
    Assignee: Pixart Imaging Inc.
    Inventors: Chih Hung Lu, Tzung Min Su, Chih Hsin Lin, Hsin Chia Chen, Cheng Nan Tsai
  • Patent number: 9024880
    Abstract: An interactive system capable of improving image processing includes a reference device, a processing module and a controller. The reference device is used for transmitting and/or reflecting light signals within a predetermined spectrum. The processing module includes an image sensor, an estimation unit and a transmission interface. The image sensor is used for sensing an image so as to generate pixel signals; the estimation unit is used for determining static parameters of at least one image object according to the pixel signals; and the transmission interface is used for serially outputting the static parameters of the at least one image object. The controller is used for controlling operation of the interactive system according to the static parameters of the at least one image object outputted from the transmission interface. The image sensor, the estimation unit, and the transmission interface can all be formed on the same substrate.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: May 5, 2015
    Assignee: PixArt Imaging Inc.
    Inventors: Hsin-Chia Chen, Chih-Hung Lu, Cho-Yi Lin, Tzu-Yi Chao
  • Patent number: 8988389
    Abstract: The present invention relates to a touch panel and a manufacturing method thereof. The method comprises steps of providing a base having a substrate, a buffering layer and a transparent conductive layer, forming multiple first pad strings, multiple second pads and an isolated pad by etching the transparent conductive layer, forming a shading layer on the isolated pad and then sequentially forming insulating layers, wire bridges, signal wires and cover pieces to complete the touch panel. The method of the invention is simplified, such that the production capacity is increased. The step of forming the shading layer is after the step of forming the first pad strings and the second pads, such that the shading layer would not be charred in the step of forming first pad strings and the second pads.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: March 24, 2015
    Assignee: Emerging Display Technologies Corp.
    Inventor: Chih-Hung Lu
  • Patent number: 8976159
    Abstract: In a variable size sensing system and a method for redefining the size of a sensing area thereof, the sensing system includes four elements, a mark and two image sensing devices. The four elements are consecutively connected and thereby forming a frame. Two of the four elements have variable lengths so as to adjust the size of the frame. The inner edge of the frame defines a sensing area of a parallelogram shape. The sensing system has a first and a second working mode. The sensing area has a first size and a second size when the sensing system is in the first working mode and the second working mode respectively, wherein the first size is predetermined and smaller than the second size. The mark is used to mark a fixed length. When the sensing system is changed from the first working mode to the second working mode, the mark sensed by the image sensing devices can be utilized to redefine the size of the sensing area in the sensing system.
    Type: Grant
    Filed: June 7, 2009
    Date of Patent: March 10, 2015
    Assignee: Pixart Imaging Inc.
    Inventors: Cho-Yi Lin, Hsin-Chi Cheng, Chih-Hung Lu, Yi-Hsien Ko
  • Publication number: 20150048516
    Abstract: An integrated circuit that includes a substrate, a metal layer over the substrate and a first dielectric layer over the metal layer. The first dielectric layer includes a via. A sidewall layer that includes a silicon compound is in the via. A second dielectric layer is over the sidewall layer and an ultra-thick metal (UTM) layer is in the via.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 19, 2015
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chih-Hung LU, Ching-Chen HAO
  • Patent number: 8947403
    Abstract: An image sensing module utilizes an image sensor to sense objects and a mirror image of the objects in a mirror through a plurality of first light filtering components with a first transmission spectrum and a plurality of second light filtering components with a second transmission spectrum for generating an image. A light filtering module substantially having the first transmission spectrum is disposed in front of the mirror. The image includes a plurality of pixels. Each pixel includes a first sub data and a second sub data. The image sensing module utilizes an image sensing controller to detect real images corresponding to the objects and virtual images correspond to the mirror image of the objects from the image according to the first sub data and the second sub data of the plurality of pixels.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: February 3, 2015
    Assignee: PixArt Imaging Inc.
    Inventors: Wen-Han Yao, Chih-Hung Lu, Tzung-Min Su, Chih-Hsin Lin, Shu-Sian Yang
  • Publication number: 20140375904
    Abstract: The present invention relates to a touch panel and a manufacturing method thereof. The method comprises steps of providing a base having a substrate, a buffering layer and a transparent conductive layer, forming multiple first pad strings, multiple second pads and an isolated pad by etching the transparent conductive layer, forming a shading layer on the isolated pad and then sequentially forming insulating layers, wire bridges, signal wires and cover pieces to complete the touch panel. The method of the invention is simplified, such that the production capacity is increased. The step of forming the shading layer is after the step of forming the first pad strings and the second pads, such that the shading layer would not be charred in the step of forming first pad strings and the second pads.
    Type: Application
    Filed: June 25, 2013
    Publication date: December 25, 2014
    Inventor: Chih-Hung Lu
  • Patent number: 8890293
    Abstract: A guard ring for a through via, and a method of manufacture thereof, is provided. The guard ring comprises one or more rings around a through via, wherein the rings may be, for example, circular, rectangular, octagon, elliptical, square, or the like. The guard ring may be formed from a contact through an inter-layer dielectric layer and interconnect structures (e.g., vias and lines) extending through the inter-metal dielectric layers. The guard ring may contact a well formed in the substrate.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: November 18, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Hung Lu, Song-Bor Lee, Ching-Chen Hao
  • Patent number: 8836831
    Abstract: An image sensor includes a sensor matrix including a plurality of sensing elements and a plurality of shutter control lines. Each sensing element includes an electronic shutter and a photo-detector, wherein the electronic shutter controls the exposure time of the photo-detector. Each shutter control line couples to a row or column of the electronic shutters, whereby different rows or columns of the electronic shutters can be independently controlled, and the photo-detectors in the same row or column can have the same exposure time.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: September 16, 2014
    Assignee: Pixart Imaging Inc.
    Inventors: Ren Hau Gu, Chih Hsin Lin, Wen Han Yao, Hung Ching Lai, Shu Sian Yang, Yu Hao Huang, Chih Hung Lu, En Feng Hsu, Chi Chieh Liao
  • Patent number: 8836761
    Abstract: The present invention discloses a 3D information generator for use in an interactive interface. The 3D information generator includes: a MEMS light beam generator having at least one light source for providing a dot light beam and a MEMS mirror for projecting a movable scanning light beam according to the dot light beam to an object; an image sensor for sensing an image of the object to generate a 2D image information; and a processor for generating a distance information by triangulation method according to a reflection result of the scanning light beam scanning on the object, wherein the distance information is combined with the 2D image information to generate a 3D information.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: September 16, 2014
    Assignee: Pixart Imaging Incorporated
    Inventors: Chuan-Wei Wang, Hsin-Chia Chen, Chih-Hung Lu
  • Patent number: 8810362
    Abstract: A recognition system is used for recognizing an operation of a user. The recognition system includes a sensor module, a processing device, a playing device, and data storage device. The sensor module is used for generating a first sensing signal according to an operation of a user. The data storage device stores a plurality of objects. The processing device compares the first sensing signal with the plurality of objects to generate a recognition result in response to the first sensing signal. The playing device is used for playing the recognition result. The sensor module is used for, after the recognition result is played, recognizing a response of the user to generate a second sensing signal, and feeding the second sensing signal back to the processing device. The processing device judges whether the recognition result corresponding to the first sensing signal is correct according to the second sensing signal.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: August 19, 2014
    Assignee: Pixart Imaging Inc.
    Inventors: Yu-Han Chen, Ming-Tsan Kao, Chih-Hung Lu
  • Patent number: 8791924
    Abstract: A distance-measuring device includes a light-emitting/sensing controlling circuit, a light-emitting component, a light-sensing group, a background-calculating circuit, a frequency-adjusting circuit, and a distance-calculating circuit. The light-emitting component emits a detecting light to a measured object. The light-emitting/sensing controlling circuit controls the light-sensing group receiving and accumulating the energy of a reflective light generated by the measured object reflecting the detecting light, so that the distance-calculating circuit can calculate a measured distance between the measured object and the distance-measuring device according the accumulated energy of the light-sensing group. In addition, the distance-measuring device calculates the energy accumulated by the light-sensing group sensing the background light per unit time, by means of the background-calculating circuit.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: July 29, 2014
    Assignee: PixArt Imaging Inc.
    Inventors: En-Feng Hsu, Han-Chi Liu, Chih-Hung Lu, Ming-Tsan Kao
  • Patent number: 8760437
    Abstract: A sensing system includes a complex reflector and an image sensor, in which the complex reflector is disposed on one side of a flat panel. The complex reflector includes a first section and a second section which are stacked, in which the first section provides a mirror image and a real image, and the second section provides a real image. The image sensor is used to capture an image generated by an object when touching a surface of the flat panel, and in the image captured by the image sensor, the object simultaneously generates a first object image in an image region corresponding to the second section and an image region corresponding to the first section, and generates a second object image in the image region corresponding to the first section.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: June 24, 2014
    Assignee: Pixart Imaging Inc.
    Inventors: Yu-Hao Huang, Hsin-Chia Chen, Tzung-Min Su, Chih-Hsin Lin, Ren-Hau Gu, Chih-Hung Lu
  • Patent number: 8749764
    Abstract: A distance-measuring device is utilized for measuring a measured distance between a measured object and the distance-measuring device. The distance-measuring device reduces the effect of a background light and a flicking light by removing the part corresponding to the background light and the flicking light from light-sensed signals generated by an image sensor of the distance-measuring device. In addition, the distance-measuring device calculates a calibrating parameter for calibrating an assemble-error angle of the distance-measuring device, according to an imaging location of a reflective light obtained by measuring a calibrating object with a predetermined distance. In this way, the distance-measuring device can correctly calculate out the measured distance.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: June 10, 2014
    Assignee: PixArt Imaging Inc.
    Inventors: En-Feng Hsu, Chi-Chieh Liao, Chih-Hung Lu, Tsung-Yi Su
  • Patent number: 8743348
    Abstract: There is provided an optical distance detection system which includes a light source and a detection device. The light source is configured to illuminate a surface of an object. The detection device is configured to receive a reflected light from the surface of the object and to output a distance of the object according to the reflected light. The detection device includes a sensing module and a calculation module. The sensing module is configured to receive the reflected light to accordingly generate an image. The calculation module is for outputting the distance according to a light spot position and a light spot size of the reflected light forming on the image.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: June 3, 2014
    Assignee: Pixart Imaging Inc.
    Inventors: Ren Hau Gu, En Feng Hsu, Chi Chieh Liao, Yi Fang Lee, Chih Hung Lu, Chung You Wu
  • Patent number: 8675913
    Abstract: A gesture recognition method for an interactive system includes the steps of: capturing image windows with an image sensor; obtaining information of object images associated with at least one pointer in the image windows; calculating a position coordinate of the pointer relative to the interactive system according to the position of the object images in the image windows when a single pointer is identified according to the information of object images; and performing gesture recognition according to a relation between the object images in the image window when a plurality of pointers are identified according to the information of object images. The present invention further provides an interactive system.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: March 18, 2014
    Assignee: Pixart Imaging Inc.
    Inventors: Hsin Chia Chen, Tzung Min Su, Chih Hung Lu
  • Patent number: 8659577
    Abstract: A pointer coordinate detection method for a touch system includes the steps of: capturing an image window looking across a plate surface with at least one image sensor; identifying a height coordinate of a pointer relative to the touch system according to a variation of each column of pixels in the image window; and calculating a plane coordinate of the pointer relative to the touch system according to an image position of the pointer in the image window. The present invention further provides a touch system.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: February 25, 2014
    Assignee: Pixart Imaging Inc.
    Inventors: Tzung Min Su, Hsin Chia Chen, Chih Hung Lu
  • Patent number: 8629854
    Abstract: A controlling method applied to a sensing system includes the following step. Whether a specific function is started is determined according to the size of a total pattern acquired. In an embodiment of the present invention, the step of determining whether the specific function is started according to the size of the total pattern acquired is the step of determining whether the specific function is started according to the size of the total pattern acquired and the length of time to successively acquire the total pattern. Accordingly, it is more convenient for a user to use the sensing system having the said controlling method.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: January 14, 2014
    Assignee: Pixart Imaging Inc.
    Inventors: Cho-Yi Lin, Chih-Hung Lu
  • Publication number: 20130293867
    Abstract: A distance-measuring device is utilized for measuring a measured distance between a measured object and the distance-measuring device. The distance-measuring device reduces the effect of a background light and a flicking light by removing the part corresponding to the background light and the flicking light from light-sensed signals generated by an image sensor of the distance-measuring device. In addition, the distance-measuring device calculates a calibrating parameter for calibrating an assemble-error angle of the distance-measuring device, according to an imaging location of a reflective light obtained by measuring a calibrating object with a predetermined distance. In this way, the distance-measuring device can correctly calculate out the measured distance.
    Type: Application
    Filed: July 11, 2013
    Publication date: November 7, 2013
    Inventors: En-Feng Hsu, Chi-Chieh Liao, Chih-Hung Lu, Tsung-Yi Su