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Assignee: Elan Microelectronics Corporation


Location: Hsinchu, TW
No. of patents: 43

1    
NumberTitleIssue Date
8180155Decoding method for a two dimensional dot code
A decoding method for a two dimensional dot code includes the steps of defining coordinates of boundary dots in the two dimensional dot code, performing extrapolation and interpolation according to the coordinates of the boundary dots to create coordinates of a plur...
05/15/2012
8164870ESD protection for high-voltage-tolerance open-drain output pad
A high-voltage NMOS transistor for ESD protection is coupled between a high-voltage I/O pad and a low-voltage terminal, and has a parasitic component between its source and drain. A trigger has an input coupled to the high-voltage I/O pad and an output coupled to th...
04/24/2012
8149219Touchpad with single-layered printed circuit board structure
In a touchpad with single-layered PCB structure, a PCB has a bottom layer with a sensor area and a component area thereon, the sensor area includes two directional traces directly connected to the component area, respectively, and carbon film wires in the sensor are...
04/03/2012
8115750Base capacitance compensation for a touchpad sensor
For a compensation to the sensed capacitive values of a touchpad sensor, the variance profile of the base capacitance or the sensed capacitive values of the traces in the touchpad sensor is determined, and then a firmware operation based on the variance profile is c...
02/14/2012
8102376Method for object detection on a capacitive touchpad
In an object detection method for a capacitive touchpad, at least one reference time interval is used to distinguish whether a variation of the sensed value on the touchpad is resulted from an operation of an object on the touchpad, actions such as an object touch d...
01/24/2012
8040325Base capacitance compensation for a touchpad sensor
Methods are provided for base capacitance compensation of traces in a touchpad sensor. Compensation areas are calculated by evaluating the differences between the base capacitances of the traces, or the differences between the base capacitances of the traces and a t...
10/18/2011
8040324Movement detection method for multiple objects on a capacitive touchpad
In a movement detection method for multiple objects on a capacitive touchpad, the waveform of sensed values on the touchpad is monitored for its variation to determine respective movements of the objects on the touchpad, and various operational gestures are further ...
10/18/2011
8022940Capacitive touch system and data transmission method in a capacitive touch system
A capacitive touch system uses at least two integrated circuits to simultaneously scan a touch panel, each scanning only a portion of traces of the touch panel, and a second integrated circuit to receive sensed data from the first integrated circuits. The sensed dat...
09/20/2011
8013842Method for gesture detection on a capacitive touchpad
In a gesture detection method for a capacitive touchpad, various gesture operations are determined by detecting the touching on the touchpad, leaving from the touchpad, and moving on the touchpad. ...
09/06/2011
7982717Method for gesture detection on a touchpad
In a gesture detection method for a touchpad, according to the present invention, various gestures such as tap, drag and double tap are determined by operating an object to touch on the touchpad, leave from the touchpad, and move on the touchpad. ...
07/19/2011
7942341Two dimensional dot code, and decoding apparatus and method for a two dimensional dot code
A two dimensional dot code includes boundary dots, a direction dot and a code dot to regenerate an information therefrom. To decode the two dimensional dot code, the boundary dots and the direction dot are used to define coordinates of virtual code dots first and th...
05/17/2011
7804490Method for multiple gesture detection and verification on a touchpad
In a gesture detection method for a touchpad, various gestures such as tap, drag and double tap are determined by operating an object to touch on the touchpad, leave from the touchpad, and move on the touchpad. ...
09/28/2010
7768503Capacitive touchpad integrated with a graphical input function
A capacitive touchpad provides operational modes including key input, graphical input, handwriting input, and mouse control. The touchpad comprises a panel having several programmed regions thereon, several patterns in the regions are programmed for the operational ...
08/03/2010
7742038Method for detecting overlapped function area on a touchpad
In a method for detecting overlapped function area on a touchpad with the overlapped function area overlapped by more than two different function areas, when the overlapped function area is touched by an object, a further function can be correctly performed accordin...
06/22/2010
7714847Capacitive touchpad having dual traces coupled with uneven spaced interlaced sensors
A capacitive touchpad comprises two traces with a plurality of first and second sensors coupled thereto respectively, and the first and second sensors are arranged interlaced and uneven spaced to each other. By detecting the capacitance variances produced by the sen...
05/11/2010
7710404Method for gesture detection on a touchpad
In a gesture detection method for a touchpad, various gestures such as tap, drag and double tap are determined by operating an object to touch on the touchpad, leave from the touchpad, and move on the touchpad. ...
05/04/2010
7701447Method for multiple objects detection on a capacitive touchpad
A multiple objects detection method for a capacitive touchpad, through at least one preset time, whether it is noise and interference or an operation of object on touchpad is thus distinguished, actions such as object touches the touchpad, leaves the touchpad are th...
04/20/2010
7688313Touch-sense apparatus available for one-dimensional and two-dimensional modes and control method therefor
A touch-sense apparatus available for one-dimensional and two-dimensional modes comprises a sensor having a plurality of traces in two directions to sense the position touched by an object to produce a first signal, a two-dimensional coordinate processor to produce ...
03/30/2010
7643014Resistive touch screen measurement system
A voltage is generated after a touch screen is touched, and the voltage is transformed into a digital signal for detecting a touch point which the touch screen is touched. A touch sensing system includes a first switch having a first node coupled to a first voltage ...
01/05/2010
7576732Scroll control method using a touchpad
A scroll control method using a touchpad comprises predefining a region on a touchpad, whereby a scroll function will be triggered by a landing of an object on the region, and terminated by a leaving of the object from the touchpad. During the scroll function is exe...
08/18/2009
7545615LCD source driver for improving electrostatic discharge
In an LCD source driver, to enhance the ESD performance thereof, there is provided a path in a device area penetrating thereacross such that an internal power wire or an internal ground wire to connect between an output pad and a power-rail ESD clamp circuit on two ...
06/09/2009
7545038Bumping process and bump structure
A bumping process comprises forming a passivation layer having a planarized surface covering a pad on a substrate, forming a hole penetrating through the passivation layer to expose a contact surface of the pad, and forming a bump on the contact surface and planariz...
06/09/2009
7544600Bumping process and bump structure
A bumping process comprises forming a passivation layer having a planarized surface covering a pad on a substrate, forming a hole penetrating through the passivation layer to expose a contact surface of the pad, and forming a bump on the contact surface and planariz...
06/09/2009
7538686Remote controller with a communication function
A remote controller includes an input module including an input panel and a controller coupled to the input panel for generating coordinate information of the input panel. The remote controller further includes a data transmission interface for transmitting data to ...
05/26/2009
7436690Flat cell read only memory using common contacts for bit lines and virtual ground lines
In a flat cell read only memory, two bit lines or two virtual ground lines share a common contact such that the contact is slightly adjustable in its location for inserting a local metal word line without increasing the layout area to improve the reading speed of th...
10/14/2008
7436395Simplified capacitive touchpad and method thereof
In a capacitive touchpad, a plurality of sensing zones are defined, and a controller is connected with a plurality of scan lines for sensing a movement of an object slipping on the plurality of sensing zones, wherein at least one of the plurality of scan lines is co...
10/14/2008
7388787Reference current generator
In a reference current generator, a current mirror has a referent branch with a first current flowing thereon and a mirror branch to produce a second current by mirroring the first current, a first transistor is coupled to the referent branch, a second transistor is...
06/17/2008
7362244User programmable input apparatus with a keyboard
A user programmable input apparatus with a keyboard comprises several keys with one or more special keys thereof on the keyboard for input operations, a microprocessor to receive inputs from the keys when they are pressed, a nonvolatile memory programmable by operat...
04/22/2008
7358812Class AB operational buffer
A class AB operational buffer comprises an output stage, a voltage supply circuit to provide a first voltage and a second voltage to drive the output stage, a first current source to provide a first current, a second current source to provide a second current, a fir...
04/15/2008
7324089Optical device for optical mouse
The present invention relates to an improved optical device for optical mouse, being installed inside the case body of the optical mouse, comprising: a LED, a lens mount, a sensor and a digital signal processor. That is, instead of using the LED, the LED assembly cl...
01/29/2008
7274353Capacitive touchpad integrated with key and handwriting functions
A capacitive touchpad integrated with key and handwriting functions is provided for operation in key, handwriting and mouse modes. Several regions are defined on the panel of the touchpad and have several patterns printed thereon for the operation modes thereby. In ...
09/25/2007
7203242Code rate adaptive encoding/decoding arrangement and method for a pulse code modulation system
A code rate adaptive encoding/decoding arrangement and method for a pulse code modulation system comprises a code rate adaptor and a code capacity meter to dynamically produce a code rate adaptive signal for the code length of the pulse code modulation adaptive to a...
04/10/2007
7154765Flat-cell read-only memory
In a flat-cell ROM including a plurality of memory banks, each of the memory banks comprises a memory array, a plurality of bit lines, a plurality of virtual ground lines, three select lines, and a common row of contacts shared with an adjacent memory bank. The comm...
12/26/2006
7123842Ultrasonic and infrared transmitter with tunable carrier frequency
The present invention discloses an ultrasonic and infrared transmitter with tunable carrier frequency, which comprises an oscillation frequency, a frequency divider, a multiplexer and an output buffer on an integrated circuit in association with an infrared light em...
10/17/2006
7059933Ultrasonic signaling interactive toy
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 transce...
06/13/2006
7043434Integrated speech synthesizer with an automatic identification of speaker connections and identification method used thereof
An integrated speech synthesizer with an automatic identification of speaker connections and identification method includes a sound encode register to store encoded digitized sound data, a first digital to analog converter unit connected to the sound encode register...
05/09/2006
7016616Integrated circuit receiver available for infrared or ultrasonic transmission with digital filtering
The present invention discloses an integrated circuit receiver available for infrared or ultrasonic transmission by use of digital filtering for demodulation of infrared or ultrasonic carrier signal. The integrated circuit receiver comprises an infrared receiver or ...
03/21/2006
6992607Speech synthesizer
To reduce power consumption and operation frequency, a speech synthesizer comprises a volume control unit to receive a control signal and generate a control bias, a signal transform unit to receive the control bias Vbias and a series of digital speech codes and unde...
01/31/2006
6940439Multi-track speech synthesizer
A multi-track speech synthesizer comprises a plurality of volume control units, a plurality of signal transform units, a plurality of current switch units, a comparison unit and a current output unit. Each current switch units includes a pair of complementary output...
09/06/2005
6734812Wireless communication encoding and decoding techniques using variable length codes
A wireless communication encoding and decoding technique using variable length codes is disclosed. The coding technique defines the transmission time for a high bit in a continuous bit stream as (N×T) expressed in terms of time unit (T), and a low bit as (M×T). By...
05/11/2004
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