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).

  • Publication number: 20120146215
    Abstract: A bonding pad structure positioned on an integrated circuit includes a connecting pad, an insulation layer and a gold bump. The connecting pad is formed on the integrated circuit. The insulation layer is formed on the connecting pad, where the insulation layer has only one opening and a shape of the opening includes at least a bend. The gold bump is formed on the insulation layer, where the gold bump is electrically connected to the connecting pad through the opening of the insulation layer.
    Type: Application
    Filed: January 4, 2011
    Publication date: June 14, 2012
    Inventors: Yu-Ju Yang, Chih-Hung Lu
  • Patent number: 8180398
    Abstract: A multimedia processing system is provided for communicating among a baseband module, an image sensor module, and at least one display module in a mobile phone. The system comprises: a serial baseband interface that transmits and receives processing data from the baseband module; an image sensor interface that transmits and receives image data from the image sensor module; a display interface that transmits and receives display data from the display module, wherein the display interface comprises a display write enable output, a display read enable output, and a display transceiver means to transmit and receive the display data; and at least one register that includes a clock phase control bit, a clock polarity control bit for assisting the serial baseband interface to accommodate different interface standards, and a burst read mode control bit for bursting the serial baseband interface to read sequential processing data from a multimedia module or from the baseband module.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: May 15, 2012
    Assignee: PixArt Imaging Inc.
    Inventors: Chih-Hung Lu, Chien-Chang Pan, Cho-Yi Lin
  • Publication number: 20120098793
    Abstract: An on-screen-display module includes an optical signal processing unit and a control unit. The optical signal processing unit receives an optical signal sensed by an image sensor and outputs a touch signal. The control unit is electrically connected to the optical signal processing unit, and adjusts a display panel to execute a corresponding display effect according to the touch signal. By applying the on-screen-display module to a display device or an electronic device, the display effect of the display panel can be directly modulated through the control unit when the host is not powered on, and advantages of further saving system energy and being convenient for a user are achieved.
    Type: Application
    Filed: January 26, 2011
    Publication date: April 26, 2012
    Applicant: PIXART IMAGING INC.
    Inventors: Hsin Chi Cheng, Chih Hung Lu, Chun Yi Lu
  • Publication number: 20120098795
    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: Application
    Filed: October 5, 2011
    Publication date: April 26, 2012
    Applicant: PIXART IMAGING INC.
    Inventors: Chih Hung Lu, Tzung Min Su, Chih Hsin Lin, Hsin Chia Chen, Cheng Nan Tsai
  • Publication number: 20120075422
    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: Application
    Filed: September 24, 2010
    Publication date: March 29, 2012
    Inventors: CHUAN-WEI WANG, Hsin-Chia Chen, Chih-Hung Lu
  • Publication number: 20120068940
    Abstract: An electronic device includes a housing, an optical touch module, and a detecting unit. The housing includes a first body and a second body, and an angle is formed between the first body and the second body. The optical touch module executes a positioning function by sensing signals. The detecting unit is configured to the optical touch module, and is used for detecting the angle. When the angle is smaller than a predetermined angle, the detecting unit instructs the optical touch module to pause executing the positioning function, so as to avoid false position determinations by the optical touch module.
    Type: Application
    Filed: September 20, 2010
    Publication date: March 22, 2012
    Applicant: PIXART IMAGING INC.
    Inventors: Chuan Wei Wang, Cheng Nan Tsai, Chun Yi Lu, Horng Goung Lai, Chih Hung Lu
  • Patent number: 8125574
    Abstract: A remote controller for controlling a display device includes a first image sensor, a processing unit and an activation mechanism. The first image sensor is for sensing an object and forming a digital image. The processing unit is coupled to the first image sensor for calculating image variations of the object on the digital image, correspondingly controlling the display device according to the image variations and deactivating the first image sensor after the remote controller is idle for a predetermined period of time. The activation mechanism is coupled to the first image sensor for re-activating the deactivated first image sensor.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: February 28, 2012
    Assignee: PixArt Imaging Inc.
    Inventors: Meng Tsung Wu, Chih Hung Lu, Chao Chien Huang
  • Publication number: 20120044363
    Abstract: A method for controlling a host apparatus, includes steps of the followings. First, a pattern is projected to a detection region. Second, images of the detection region are captured and image information stream is generated based on the images. Third, an image information associated with the pattern is identified to be a background image information. Fourth, a currently captured image information is subtracted to the background image information to identify if an object appears in the detection region. Fifth, a motion of the identified object is determined based on a variation of the pattern reflected from the identified object to generate a control instruction to the host apparatus. A host apparatus, an interaction control system and a method for detecting a motion of an object are also provided.
    Type: Application
    Filed: July 5, 2011
    Publication date: February 23, 2012
    Applicant: PixArt Imaging Inc.
    Inventors: CHIH-HUNG LU, Hsin-Chia Chen, Shu-Sian Yang, Ren-Hau Gu, Ching-Lin Chung
  • Publication number: 20120044213
    Abstract: Optical touch display system includes a light source, a reflector, an image sensor, and a processing device. The light source emits light to at least one object directly and emits light to the at least one object via the reflector at the same time. Then the image sensor receives light reflected from the at least one object directly and light reflected via the reflector simultaneously to form a set of imaging objects which have similar color parameters on an image. Then the processing device produces a set of still image parameters of the image objects such as gravity centers and border boundaries. Based on the still image parameters, the processing device determines the coordinates of the least one object on the optical touch display.
    Type: Application
    Filed: November 3, 2011
    Publication date: February 23, 2012
    Inventors: Chih-Hung Lu, Hsin-Chia Chen, En-Feng Hsu, Chi-Chieh Liao, Ren-Hau Gu, Shu-Sian Yang, Yu-Hao Huang
  • Patent number: 8116912
    Abstract: A control device of a temperature controller, for adjusting the temperature of an environment having at least one active object, includes a first image sensor, a second image sensor, a process unit and a control unit. The first image sensor is for capturing a first image containing the image of the active object. The second image sensor is for capturing a second image containing the image of the active object. The process unit calculates a distance between the active object and the temperature controller according to the first and second images. The control unit controls an operational status of the temperature controller according to the distance calculated by the process unit. The present invention further provides a control method of a temperature controller.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: February 14, 2012
    Assignee: Pixart Imaging Inc.
    Inventors: Tzu Yi Chao, Hsin Chia Chen, Tzung Min Su, Chih Hung Lu, Cheng Kuang Sun, Cho Yi Lin
  • Publication number: 20120019443
    Abstract: A touch system comprises a transparent panel, a first image sensing module, a second image sensing module and a processing circuit. The first image sensing module is at least partially disposed on a first flat surface of the transparent for obtaining an image above the first flat surface. The second image sensing module is at least partially disposed under a second flat surface of the transparent for obtaining an image of the first flat surface through the second flat surface. When two pointers approach the first flat surface, the processing circuit calculates possible coordinates of the pointers according to the image obtained by the first image sensing module and calculates coordinates of the pointers according to the image obtained by the second image sensing module, so as to compare all of the coordinates to obtain actual coordinates of the pointers from the possible coordinates.
    Type: Application
    Filed: March 1, 2011
    Publication date: January 26, 2012
    Applicant: PixArt Imaging Inc.
    Inventors: HSIN-CHIA CHEN, Horng-Goung Lai, Chih-Hung Lu
  • Publication number: 20120001848
    Abstract: An interactive pointing device capable of switching capture ranges includes an image capturing element and a processing unit. The image capturing element operates in a first capture range or a second capture range. The image capturing element is used for capturing a light source, and outputting an image signal. When a distance from the interactive pointing device to the light source is smaller than a reference value, the processing unit controls the image capturing element to detect the light source with the first capture range, and the processing unit converts the image signal into a first coordinate data. When the distance is greater than the reference value, the processing unit controls the image capturing element to detect the light source with the second capture range, and the processing unit converts the image signal into a second coordinate data.
    Type: Application
    Filed: September 16, 2010
    Publication date: January 5, 2012
    Applicant: PIXART IMAGING INC.
    Inventors: Chih Hung Lu, En Feng Hsu, Shih Chi Chien, Ming Tsan Kao, Hsin Chia Chen, Chao Chien Huang, Cho Yi Lin
  • Publication number: 20110316773
    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: Application
    Filed: September 13, 2010
    Publication date: December 29, 2011
    Applicant: PIXART IMAGING INC.
    Inventors: Chih Hung Lu, En Feng Hsu, Hsin Chia Chen, Chao Chien Huang, Cho Yi Lin
  • Publication number: 20110317146
    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: Application
    Filed: August 30, 2011
    Publication date: December 29, 2011
    Applicant: PIXART IMAGING INC.
    Inventors: Ren Hau GU, En Feng HSU, Chi Chieh LIAO, Yi Fang LEE, Chih Hung LU, Chung You WU
  • Publication number: 20110317040
    Abstract: A detection device includes an image capture element, a control signal generator, and a processor. The image capture element is used for capturing an optical signal, and outputting an image signal. The control signal generator is used for generating a control signal. The processor selectively converts the image signal into an object feature or an image feature in response to the control signal. Such a detection device can appropriately convert an operation mode, so as to have both efficacies of reducing the amount of transferred data and processing complex image data.
    Type: Application
    Filed: September 13, 2010
    Publication date: December 29, 2011
    Applicant: PIXART IMAGING INC.
    Inventors: Chih Hung Lu, En Feng Hsu, Hsin Chia Chen, Chao Chien Huang, Cho Yi Lin
  • Publication number: 20110299086
    Abstract: A sensing device includes a housing and an image sensing system disposed in the housing and used for detecting a reflected light from an object. The image sensing system includes a substrate, a light sensing element, and a reflection and redirection element. The light sensing element is disposed on the substrate. The reflection and redirection element is disposed between the light sensing element and the object, and used for reflecting and redirecting the reflected light from the object to a receiving direction of the light sensing element, such that the light sensing element receives the reflected light and generates a corresponding sensing signal.
    Type: Application
    Filed: September 13, 2010
    Publication date: December 8, 2011
    Applicant: PIXART IMAGING INC.
    Inventors: Hui Hsuan Chen, Cheng Nan Tsai, Chih Hung Lu, Wei Chung Wang
  • Publication number: 20110285643
    Abstract: An optical touch display device includes a display unit and at least one light sensing module. The display unit includes a first substrate and a display layer. The first substrate has a display area and a non-display area surrounding the display area. The display layer is disposed on the display area of the first substrate. The light sensing module is disposed on an upper surface of the non-display area of the first substrate. A side surface of the light sensing module has a light sensing window, and at least a portion of the light sensing window is adapted to receive light above the display unit. The optical touch display device has a thin thickness.
    Type: Application
    Filed: November 5, 2010
    Publication date: November 24, 2011
    Applicant: PixArt Imaging Inc.
    Inventors: Chih-Hung Lu, Hui-Hsuan Chen, Wei-Chung Wang
  • Publication number: 20110261015
    Abstract: An optical touch device includes a display panel and at least a light emitting and receiving unit. The display panel includes a transparent substrate having a touch surface and a plurality of side surfaces adjacent to the touch surface. At least one of the side surfaces is a first light incidence surface and at least one of the side surfaces is a first light emitting surface. Each light emitting and receiving unit includes a linear light source and a light sensing component. The linear light source is disposed beside the first light incidence surface and is configured for providing optical signals into the transparent substrate. The light sensing component is disposed beside the first light emitting surface. The light sensing component is configured for receiving the optical signals from the linear light source. The optical touch display device has advantages of low cost.
    Type: Application
    Filed: November 1, 2010
    Publication date: October 27, 2011
    Applicant: PixArt Imaging Inc.
    Inventors: CHIH-HUNG LU, Wei-Chung Wang, Hui-Hsuan Chen
  • Publication number: 20110236805
    Abstract: The present invention discloses a MEMS lithography mask with improved tungsten deposition topography and a method for making the same. The MEMS lithography mask includes: a pattern including at least two sections forming a conjunction with each other, each of the at least two sections having a width not less than a minimum width, the conjunction having a center and a plurality of corners, wherein at least one of the corners is inwardly recessed to reduce a width of the conjunction, the sections being for defining trenches on a substrate to be filled with tungsten as apart of a MEMS device, whereby the lowest height of the tungsten surface is not lower than 80% of the trench height.
    Type: Application
    Filed: June 2, 2010
    Publication date: September 29, 2011
    Inventors: Hsin-Hui Hsu, Chuan-Wei Wang, Sheng-Ta Lee, Chih-Hung Lu
  • Publication number: 20110194097
    Abstract: An optical ranging sensor includes a light emitting unit for projecting a light beam on an object to be measured, a light receiving unit on which a light spot of reflected light of the light beam from the object is formed, and a processing circuit unit for processing output signals from the light receiving unit and detecting a distance to the object. The light receiving unit includes an effective light receiving part having light receiving cells arranged in matrix form in a first direction in which a position of the light spot moves as the object moves along a direction of an optical axis of the light emitting unit, and in a second direction orthogonal to the first direction. A size of the effective light receiving part in the second direction is not smaller than a radius of the light spot but not larger than a diameter thereof.
    Type: Application
    Filed: December 27, 2010
    Publication date: August 11, 2011
    Inventors: Akifumi YAMAGUCHI, Hideo Wada, Masaru Kubo, Jason Lu/ Chih-Hung Lu