Patents Assigned to Elan Microelectronics Corp.
  • Patent number: 8985470
    Abstract: A code pattern having cross-shaped positioning patterns is disclosed, comprising: a plurality of marks, which at least include a central positioning mark, a first positioning mark, a second positioning mark, a third positioning mark, and a fourth positioning mark; the central and the first to fourth positioning marks are distributed in a region along with other marks. The first to fourth positioning marks are four neighboring marks that are closest to the central positioning mark in distance. In addition, The central and the first to fourth positioning marks are disposed in the shape of a cross within the region, and corresponding to a coordinate obtained by adding together four coordinates from the first to fourth positioning marks then dividing a resulted sum thereof by four, is equivalent to a coordinate corresponding to the central positioning mark.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: March 24, 2015
    Assignee: Elan Microelectronics Corp.
    Inventors: Chen-Hua Ao, Yi-Hsin Tao
  • Patent number: 8955760
    Abstract: A code pattern for providing information is disclosed, which can effectively improve the ratio of effective marks, and the effective marks are distributed in a rhombus area. The code pattern comprises: a plurality of nominal positions and a plurality of information marks. The nominal positions are respectively located at a plurality of intersections of a plurality of first hypothetical lines and a plurality of second hypothetical lines, and the first hypothetical lines are parallel to one diagonal line within the rhombus area. The plurality of information marks are respectively disposed within the area formed by the nominal positions, and each information mark is used to represent one of at least two values.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: February 17, 2015
    Assignee: Elan Microelectronics Corp.
    Inventors: Cheng-Ru Chang, Wei-Kuo Mai
  • Patent number: 8896570
    Abstract: A detecting method for a touch device, the method includes the steps of reading all sensed values of a frame associated with the touch device, computing a difference between a maximum sensed value and a minimum sensed value of all the sensed values of the frame, comparing the difference with a base value to generate a comparison result and executing a corresponding operation based on the comparison result.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 25, 2014
    Assignee: Elan Microelectronics Corp.
    Inventors: Ching-Ting Chiu, Po-Hao Kuo, Chia-Hsing Lin
  • Patent number: 8803534
    Abstract: A circuit for sensing a differential capacitance includes a charge-storing circuit to generate a first output voltage and a second output voltage related to capacitances at two terminals of the differential capacitance, respectively, an operational amplifier to amplify the difference between the first and second output voltages to generate a sensing value, a first sampling capacitor having one terminal connected to the negative input terminal and the other terminal receiving the first or second output voltage, and a second sampling capacitor having one terminal connected to the negative input terminal and the other terminal switched to the output terminal of the operational amplifier. The second sampling capacitor stores a non-ideal error value to offset the non-ideal effect of the operational amplifier imparted on the sensing value.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: August 12, 2014
    Assignee: Elan Microelectronics Corp.
    Inventors: Chao-Chi Yang, Shih-How Peng
  • Patent number: 8749520
    Abstract: A two-step detection for a capacitive touchpad to identify a real touch point first detects the self capacitances from multiple capacitance sensor traces of the capacitive touchpad to identify any touch point on the capacitive touchpad and then, if multiple touch points are detected, further detects the mutual capacitance at one of the detected touch points to identify whether it is a real touch point.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: June 10, 2014
    Assignee: Elan Microelectronics Corp.
    Inventors: Chun-Chung Huang, Tsun-Min Wang, Te-Sheng Chiu
  • Patent number: 8619056
    Abstract: Ghost resolution sensing methods are provided for capacitive touch panels. When ghost is detected involving two points on a capacitive touch panel, for each of the two points, the intersected traces at that one are concurrently charged to sense the capacitance value from either one of the intersected traces, and according thereto, a real point and a ghost point can be distinguished from each other. Alternatively, the intersected traces are crisscross driven by two synchronous and in phase signals or synchronous but out of phase signals, to sense the capacitance values at the two points. Preferably, intersectional calibration is performed in conjunction therewith, to recognize the real points.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: December 31, 2013
    Assignee: Elan Microelectronics Corp.
    Inventors: Chia-Hsing Lin, Yi-Hsin Tao, Po-Hao Kuo, Hsin-Shieh Tsai, Min-Jhih Lin
  • Patent number: 8476563
    Abstract: An induction heating cooker includes a switch element and an inductive coil, which is coupled between a power voltage and a first terminal of the switch element. A second terminal of the switch element is coupled to a common voltage. A control circuit for controlling the inducting heating cooker includes first and second comparators and a pulse generator. The first comparator receives voltages of two terminals of the inductive coil and thus outputs a trigger signal. The second comparator receives a reference voltage and a voltage of the first terminal of the switch element, and enables a fading signal when the voltage of the first terminal is higher than the reference voltage. When the trigger signal is enabled, the pulse generator outputs a pulse to control the switch element. When the fading signal is enabled, the pulse generator reduces a pulse width of the pulse.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: July 2, 2013
    Assignee: Elan Microelectronics Corp.
    Inventors: Pei-Min Gong, Ming-Chun Chou, Hsiu Ju Yang
  • Patent number: 8462127
    Abstract: The present invention relates to a touch screen and a method for positioning a coordinate. The touch screen includes a sensor array layer and a microprocessor. The sensor array layer includes M×N capacitive sensors, wherein M rows of the capacitive sensors are disposed along a first axis, and N columns of the capacitive sensors are disposed along a second axis. The microprocessor includes a plurality of pins correspondingly coupled to the capacitive sensors. When the touch screen is touched to change at least one of sensing values of the capacitive sensors in the sensor array layer, the microprocessor performs an interpolation calculation to determine a touched coordinate according to the sensing values sensed by the capacitive sensors.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: June 11, 2013
    Assignee: Elan Microelectronics Corp.
    Inventors: Yen-Chen Chiu, Ming Chieh Hsi
  • Patent number: 8350822
    Abstract: The present invention provides a touch pad operable with multi-objects and a method of operating such a touch pad. The touch pad includes a touch structure for sensing touch points of a first and a second object and a controller for generating corresponding touching signals and related position coordinates. Moreover, the controller calculates at least two movement amount indexes according to coordinate differences between these position coordinates, thereby generating a movement amount control signal to control behaviors of a software object.
    Type: Grant
    Filed: January 8, 2012
    Date of Patent: January 8, 2013
    Assignee: Elan Microelectronics Corp.
    Inventors: Wei-Wen Yang, Chih-Min Liu, Jian-Wei Chen
  • Patent number: 8300888
    Abstract: The present invention provides an image displacement detection method, which employs the center of a 1st frame as a starting point, and the previous image displacement vector or the inversed direction displacement of the adjusted previous image displacement vector as the image matching reference block; next, proceeds the matching with the 2nd frame to calculate the image displacement vector between the 1st frame and the 2nd frame. Thus, the method of the present invention can relatively increase about twice the maximum tracking speed of the sensor.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: October 30, 2012
    Assignee: Elan Microelectronics Corp.
    Inventors: Jin-Bang Chang, Wen-Tsun Tai
  • Patent number: 8146440
    Abstract: A stress sensor includes a circuit board having a stress sensitive structure, a pointing stick and a metallic back plate. The stress sensitive structure includes a stress deformation region and multiple resistors located on the stress deformation region. The pointing stick is disposed on a top of the circuit board and connected to the stress sensitive structure. The metallic back plate includes at least one fixing material coating region, and thus the fixing edges of the circuit board are fixed on the corresponding fixing material coating region. An assembly method for the stress sensor is also provided.
    Type: Grant
    Filed: July 26, 2009
    Date of Patent: April 3, 2012
    Assignee: Elan Microelectronics Corp.
    Inventors: Chun-Hua Lin, Fumiaki Karasawa, Chun-Chieh Huang, Shih-Lang Huang
  • Patent number: 8081409
    Abstract: An embedded bridge rectifier is disclosed. By reconfiguring and reconnecting internal ESD protection circuits originally installed at two bonding pads of integrated circuits, the invention not only saves hardware cost of conventional external bridge rectifiers, but also reduces the space of print circuit boards.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: December 20, 2011
    Assignee: Elan Microelectronics Corp.
    Inventor: Po-Hao Wu
  • Patent number: 7990368
    Abstract: A method for calibrating coordinates of a touch screen includes the steps of: providing a display panel, which includes display coordinates along a first axis and a first axis display coordinate; providing a capacitive sensor, which includes sensing electrodes disposed along the first axis and respectively corresponding to sensing coordinates, wherein capacitive sensor has a maximum sensing coordinate; detecting digital values corresponding to the sensing electrodes when the capacitive sensor is touched; multiplying the digital values by the sensing coordinates corresponding to the sensing electrodes to obtain a weighting value; dividing the weighting value by the maximum sensing coordinate to obtain an interpolated value; and multiplying the interpolated value by the first axis display coordinate to obtain a calibrated coordinate.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: August 2, 2011
    Assignee: Elan Microelectronics Corp.
    Inventors: Chia-Yi Lee, Wen-Kai Lee
  • Patent number: 7918140
    Abstract: The present invention relates to a stress sensor to be combined with an assembled object of an input unit of an electronic device. The stress sensor includes a circuit substrate and a pointing operation element disposed on a surface of the circuit substrate. The circuit substrate is combined with an assembled object of an input unit by a connecting mechanism such that the circuit substrate is directly attached onto a surface of the assembled object. As a result, the overall height of the stress sensor and the assembled object is reduced in comparison with the prior art.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: April 5, 2011
    Assignee: Elan Microelectronics Corp.
    Inventor: Huang Shih-Lang
  • Publication number: 20090265927
    Abstract: The integrated structure of the stress sensor section with the control section facilitates the confirmation of the matching of both sections before the input device is incorporated into an electronic device. For example, it is possible to select only the input device which exhibits favorable matching as a result of the confirmation and to incorporate it in the electronic device. Therefore, with the above-described structure of the present invention, an input device that enables constantly favorable matching of both the stress sensor section and the control section can be provided.
    Type: Application
    Filed: July 6, 2009
    Publication date: October 29, 2009
    Applicant: Elan Microelectronics Corp.
    Inventors: Hiroshi YAJIMA, Etsuo OOBA, Fumiaki KARASAWA, Atsuomi INUKAI
  • Publication number: 20090208133
    Abstract: The present invention provides an image displacement detection method, which employs the center of a 1st frame as a starting point, and the previous image displacement vector or the inversed direction displacement of the adjusted previous image displacement vector as the image matching reference block; next, proceeds the matching with the 2nd frame to calculate the image displacement vector between the 1st frame and the 2nd frame. Thus, the method of the present invention can relatively increase about twice the maximum tracking speed of the sensor.
    Type: Application
    Filed: May 21, 2008
    Publication date: August 20, 2009
    Applicant: Elan Microelectronics Corp.
    Inventors: Jin-Bang Chang, Wen-Tsun Tai
  • Patent number: 7059933
    Abstract: An ultrasonic signaling interactive toy comprising of at least one ultrasonic transceiver inside an interactive toy. The ultrasonic transceiver is capable of transmitting and receiving ultrasonic signals. Each interactive toy includes at least one ultrasonic transceiver for producing a response after receiving an ultrasonic signal. Since ultrasonic signals can be transmitted or received using the same circuit, power consumption and production costs are low.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: June 13, 2006
    Assignee: Elan Microelectronics Corp.
    Inventors: Chun-Yang Hsiao, Shui-Po Ho
  • Patent number: 6959066
    Abstract: The present invention relates to a programmable frequency divider having one n-bit adder and one n-bit D Flip Flop. These are used to transform the import clock to the target clock. The adder takes one adjustment parameter and one return signal as a basis to create the first output signal, with the possibility to program the adjustment parameter. The D Flip Flop and the adder create a cycle, which is used to receive the first output signal and its import clock to create the second output signal. The second output signal is separated into a return signal and the target signal. The D Flip Flop sends the return signal back to the adder, which will make addition calculations under the adjustment parameter, finally giving out the target clock with the target signal as a calculation basis.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: October 25, 2005
    Assignee: Elan Microelectronics Corp.
    Inventors: Jung-Chih Wang, Chao-Yu Hu
  • Publication number: 20030184350
    Abstract: The present invention relates to a programmable frequency divider, comprising one n-bit adder and one n-bit D Flip Flop. These are used to transform the import clock to the target clock. The adder takes one adjustment parameter and one return signal as a basis to create the first output signal, with the possibility to program the adjustment parameter. The D Flip Flop and the adder create a cycle, which is used to receive the first output signal and its import clock to create the second output signal. The second output signal is separated into a return signal and the target signal. The D Flip Flop sends the return signal back to the adder, which will make addition calculations under the adjustment parameter, finally giving out the target clock with the target signal as a calculation basis.
    Type: Application
    Filed: March 21, 2003
    Publication date: October 2, 2003
    Applicant: Elan Microelectronics Corp.
    Inventors: Jung-Chih Wang, Chao-Yu Hu
  • Patent number: 6353432
    Abstract: The present invention discloses a mouse scroll input apparatus for controlling scrolling motions in a computer window, including a signal input device for generating an input signal in response to an operation of a mouse user, wherein a scrolling speed of the window is determined by a level of the input signal. According to the present invention, convenient operation can be achieved at low cost.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: March 5, 2002
    Assignee: Elan Microelectronics Corp.
    Inventors: Yer-Chen Chiu, Kao-Pin Wu, Wen-Fun Chu