Patent application number | Description | Published |
20080251299 | CAPACITANCE TOUCH SENSOR - A capacitance touch sensor includes a square wave generator for generating a square wave clock, a sensor panel for receiving the square wave clock and then generating a panel signal, a peak detector for receiving the panel signal and then generating an analog peak signal, an analog-to-digital converter for receiving the analog peak signal and then generating a digital peak signal, and a control unit for receiving the digital peak signal and generating a detection signal according to a level of the digital peak signal to indicate whether the sensor panel is touched or not. | 10-16-2008 |
20090021241 | Method for measuring velocity of conductor pressing on capacitive sensor - A method for measuring a velocity of a conductor pressing on a capacitive sensor. The method includes: sampling a capacitance of a sensing electrode at each preset time; providing a threshold value; and determining the velocity of the conductor pressing on the capacitive sensor according to a specific period, wherein the specific period is defined as a period of time ranging from the time when the capacitance reaches the threshold value to the time when the capacitance reaches a peak value. | 01-22-2009 |
20090021268 | Touch sensor with electrostatic immunity and sensing method thereof - The present invention relates to a touch sensor with electrostatic immunity and sensing method thereof. The touch sensor includes a sensing electrode, a discharge element, a sensing-controlling terminal and an input-output (I/O) control terminal, wherein the discharge element is coupled between the sensing-controlling terminal and the I/O control terminal and the sensing electrode is coupled to the sensing-controlling terminal. The essence of the present invention is using charge-discharge through the sensing-controlling terminal and the I/O control terminal for sensing whether a conductor contacts the sensing electrode. There are corresponding compensations no matter an electrostatic charge on the sensing electrode is positive charge or negative charge. Therefore, the influence of electrostatic charge can be eliminated. | 01-22-2009 |
20090021269 | Method for measuring speed of conductor slipping through capacitive sensor - A method for measuring a speed of a conductor slipping through a capacitive sensor. The method includes: sampling a capacitance of a sensing electrode at each preset time; determining a first threshold value and a second threshold value according to a peak value of the capacitance when the capacitance achieves the peak value; and determining the speed of the conductor slipping through the capacitive sensor by the first period and the second period, wherein the first period is defined as a period of time ranging from the time when the capacitance reaches the first threshold value to the time when the capacitance reaches the peak value and the second period is defined as a period of time ranging from the time when the capacitance reaches the peak value to the time when the capacitance reaches the second threshold value. | 01-22-2009 |
20090045821 | Capacitive sensor with alternating current power immunity - A capacitive sensor includes a sensing electro, control unit, first and second comparator wherein the sensing electro includes a first and a second conduct ports. A positive input terminal of the first comparator and a negative input terminal of the second comparator are coupled to the first conduct port. A positive input terminal of the second comparator and a negative input terminal of the first comparator are coupled to the second conduct port. The first and second comparators respectively output first and second comparing signals according to voltages of the positive and the negative terminals thereof. The control unit charges the first conduct port and discharges the second conduct port when the first and second comparing signals correspondingly are in first and second logic states. The control unit is operable on the contrary when the first and second comparing signals are in opposition to the abovementioned description. | 02-19-2009 |
20100006657 | METHOD FOR CODING TWO DIMENSIONAL OPTICAL IDENTIFICATION WITH THE SAME GRAY LEVEL AND PRINTING PRODUCT THEREOF - The invention relates to a method for coding a two dimensional (2D) optical identification (OID) with the same gray level and a printing product thereof. The printing product includes a 2D-OID, which includes a positioning block and a plurality of data coding blocks. The positioning block has a plurality of specific patterns arranged as an N×M matrix, wherein the specific patterns along a first edge thereof and the specific patterns along a second edge thereof are filled. The data coding blocks are disposed around the positioning block and include the specific patterns arranged as the N×M matrix, wherein the specific pattern in a center of the data coding blocks is filled. A specific number of the remaining specific patterns in each data coding block are filled to serve as a code for representation of data. | 01-14-2010 |
20100007280 | ELECTRONIC CANDLE AND ELECTRONIC NIGHT LAMP - The invention relates to an electronic candle and an electronic night lamp. The electronic candle includes a light-emitting diode (LED), a capacitor and a control circuit. The capacitor has a first terminal coupled to a first terminal of the LED, and a second terminal coupled to a common voltage. The control circuit has a first control terminal coupled to the first terminal of the LED, and a second control terminal coupled to a second terminal of the LED. In a detecting period, the control circuit provides a preset voltage across the first and second terminals of the LED so that the LED is reversely biased for a preset time. Then, the first control terminal of the control circuit is set to high impedance. Next, the control circuit detects a variation of a voltage of the first terminal of the capacitor with respect to time to determine whether to light up the LED. | 01-14-2010 |
20100033360 | A LOW COST ANALOG TO DIGITAL CONVERTER AND A METHOD FOR CONVERTING AN ANALOG SIGNAL TO A DIGITAL SIGNAL - The present invention relates to a low cost analog to digital converter (ADC) and a method for converting an analog signal to a digital signal. The method includes the steps of: outputting a pulse modulation signal according to a digital value; performing a low-pass filtering to the pulse modulation signal to obtain a pulse averaged voltage; mixing a first proportion of the pulse averaged voltage and a second proportion of a voltage under test to obtain a composite voltage; comparing the composite voltage with a threshold voltage and adjusting the first digital value such that the composite voltage approaches the threshold voltage; and performing a complement operation to the digital value to obtain an analog to digital value corresponding to the voltage under test. | 02-11-2010 |
20100117958 | INFORMATION INPUT PANEL USING LIGHT EMITTED DIODE MATRIX - The present invention relates to an information input panel using the light emitted diode (LED) matrix. The panel includes the LED matrix and a control circuit. The LED matrix includes N×M LEDs. The control circuit includes N pieces of first terminal and M pieces of second terminal, wherein the i | 05-13-2010 |
20100277653 | MULTIPURPOSE INFRARED APPARATUS AND DISPLAY APPARATUS THEREOF - The present invention relates to a multipurpose infrared apparatus and a display apparatus thereof. The display apparatus includes a display panel and the multipurpose infrared apparatus, wherein the multipurpose infrared apparatus includes an infrared light emitted diode (hereinafter refer to as, IR LED) transmitter, an IR receiver and a microcontroller. The IR LED transmitter is used for transmitting infrared ray. The IR receiver is used for receiving infrared ray. The microcontroller utilizes the Time-Division Multiplexing method to control the IR LED transmitter and receiver to achieve the distance detecting, the remote control signal receiving and an ambient light detecting. | 11-04-2010 |
20110006976 | FIELD SEQUENTIAL LIQUID CRYSTAL DISPLAY WITH PASSIVE MATRIX AND DRIVING METHOD THEREOF - The present invention relates to a field sequential liquid crystal display (LCD) and driving method thereof. The method includes: turning the backlight off; step (a) of setting voltage of the segment signal lines to a first voltage and setting voltage of common signal lines to a second voltage level for a preset period so that the voltage of the pixels in LCD is set as fully white voltage; sequentially setting voltage of the common signal lines to a display common voltage in corresponding driving period, wherein when the voltage of the common signal lines is set to the display common voltage, a corresponding display data is outputted to the corresponding segment signal line; after a predetermined period from the step (a), providing a specific color backlight corresponding the display data. | 01-13-2011 |