Patent application number | Description | Published |
20090083571 | SYSTEM ON CHIP WITH LOW POWER MODE AND METHOD OF DRIVING THE SAME - There are provided a system on chip (SoC) with a low power mode and a method of driving the SoC, the SoC including: a power part supplying a main clock signal and controlling analog and digital power supply at a normal mode and supplying a sub clock signal and turning analog power off at a low power mode; a radio frequency (RF) part generating the main clock signal at the normal mode and stopping operation at the low power mode, under the control of the power part; and a control part operating according to the main clock signal at the normal mode and operating according to the sub clock signal, under to the control of the power part. | 03-26-2009 |
20090168937 | RF RECEIVER HAVING TIMING OFFSET RECOVERY FUNCTION AND TIMING OFFSET RECOVERY METHOD USING THEREOF - There is provided an RF receiver recovering timing offset by shifting timing slots in response to timing offset occurring when a signal is sampled. An RF receiver having timing offset recovery function according to an aspect of the invention includes: a preprocessing unit sampling and digitalizing an analog received signal; a differential operation unit delaying the digitalized received signal from the preprocessing unit for predetermined periods of time and differentiating the delayed signals; a correlation unit correlating the differentiated received signals from the differential operation unit with a plurality of predetermined PN code sequences and sequentially outputting correlation values; a setting unit sequentially storing the correlation values from the correlation unit, detecting a maximum value among the stored correlation values, and shifting a plurality of determination slots by a difference between a storage location of the detected maximum value and a reference storage location; and a demodulation value estimation unit estimating as a demodulation value of the received signal, a symbol of a PN code sequence corresponding to the maximum value from the shifted determination slots. | 07-02-2009 |
20130063390 | TOUCH INPUT SENSING DEVICE AND TOUCH INPUT SENSING METHOD - There are a touch input sensing device and a touch input sensing method. The touch input sensing device includes: a plurality of sensing electrodes; and a controller obtaining sensing signals generated from the plurality of sensing electrodes through a plurality of sensing channels electrically connected to the plurality of sensing electrodes, wherein the controller calculates a difference value between the sensing signals obtained from the plurality of sensing channels connected to the mutually adjacent sensing electrodes among the plurality of sensing electrodes to determine a touch input. A weighting value is assigned to a difference value between sensing signals obtained from mutually adjacent sensing electrodes, based on which the coordinates, or the like, of a touch input are determined, thus significantly reducing the influence of noise and accurately determining a touch input. | 03-14-2013 |
20130106768 | TOUCH SENSING APPARATUS AND METHOD THEREOF | 05-02-2013 |
20130113722 | TOUCH SENSING APPARATUS AND OPERATING METHOD THEREOF - There are provided a touch sensing apparatus and an operating method thereof. The touch sensing apparatus includes: a panel unit including a plurality of first electrodes and a plurality of second electrodes, the first and second electrodes intersecting each other; a circuit unit applying first driving signals to the first electrodes and detecting sensed signals from the second electrodes; and a control unit controlling an operation of the circuit unit, wherein the control unit controls the circuit unit to simultaneously apply the first driving signals to the first electrodes during a first duration corresponding to a sleep mode and detect first sensed signals from the second electrodes, and determines whether a valid touch has occurred during the first duration to determine whether to cancel the sleep mode. | 05-09-2013 |
20130127773 | TOUCH SENSING APPARATUS AND METHOD THEREOF - There are provided a touch sensing apparatus and a touch sensing method. The touch sensing apparatus includes a driving circuit unit applying a driving signal to at least one of a plurality of first electrodes; a sensing circuit unit generating an analog signal by detecting variations in capacitance in second electrodes intersecting the at least one of first electrodes to which the driving signal is applied; and a signal converting unit converting the analog signal into a digital signal, wherein the driving circuit unit controls a frequency of the driving signal according to electric noise and determines a level of the driving signal according to a dynamic range of the signal converting unit. | 05-23-2013 |
20130127774 | TOUCH SENSING APPARATUS AND METHOD THEREOF - There are provided a touch sensing apparatus and a touch sensing method. The touch sensing apparatus includes: a panel unit provided with a plurality of electrodes; a sensing circuit unit detecting variations in capacitance in the plurality of electrodes; and a calculating unit determining a touch from the variations in capacitance, wherein the calculating unit applies different parameters for determining the touch to the plurality of individual electrodes. The parameters such as an integration time, a digital signal conversion time, and a driving signal application time are set differently according to positions in which the variations in capacitance are detected, driving efficiency may be improved and power consumption may be significantly reduced. | 05-23-2013 |
20130155003 | TOUCH SENSING APPARATUS AND METHOD THEREOF - There are provided a touch sensing apparatus and a touch sensing method. The touch sensing apparatus includes: a plurality of first electrodes extending along a first axis; a plurality of second electrodes extending along a second axis intersecting the first axis and forming a plurality of intersection points by intersecting the plurality of first electrodes; and a controller integrated circuit determining a touch by detecting changes in capacitance generated in the plurality of intersection points, wherein the controller integrated circuit sets parameters for detecting the changes in capacitance differently according to positions of the plurality of intersection points. | 06-20-2013 |
20130285975 | TOUCH SCREEN PANEL AND TOUCH SCREEN APPARATUS - There are provided a touch screen panel and a touch screen apparatus. The touch screen panel includes a plurality of first electrodes formed on a substrate and extending in a first axis direction; and a plurality of second electrodes formed on the substrate and extending in a second axis direction perpendicular to the first axis direction, wherein a plurality of first slits are provided in a diagonal direction with respect to the first axis direction and the second axis direction between the plurality of first electrodes and the plurality of second electrodes, and at least one second slit is formed within each of the plurality of second electrodes. | 10-31-2013 |
20130321327 | TOUCH SENSING APPARATUS AND DATA PROCESSING METHOD THEREOF - There are provided a data processing method and a touch sensing apparatus. The data processing method includes (a) obtaining a plurality of pieces of sensing data according to one or more touch inputs; (b) selecting one or more pieces of temporary reference data having the minimum difference value between adjacent other pieces of sensing data; (c) calculating difference values between the one or more pieces of temporary reference data; (d) calculating an N number of difference values between the N number of pieces of sensing data obtained from the nodes included in the Kth row and an N number of pieces of sensing data obtained from nodes included in the K-1th row; and (e) determining the temporary reference data having a relatively small representative value as reference sensing data of the Kth row. | 12-05-2013 |
20140009431 | CAPACITANCE SENSING APPARATUS AND METHOD, AND TOUCH SCREEN APPARATUS - There is provided a capacitance sensing apparatus including: a driving circuit unit sequentially applying a driving signal to each of a plurality of first electrodes; a sensing circuit unit including a first integrating circuit detecting a first change in capacitance generated in a plurality of second electrodes by the driving signal and a second integrating circuit connected to another first electrode adjacent to the first electrode to which the driving signal is applied; and an operating unit connected to the sensing circuit unit to determine a touch input, wherein the second integrating circuit detects a second change in capacitance generated due to noise in the another first electrode, and the operating unit determines the touch input based on the first and second changes in capacitance. | 01-09-2014 |
20140104226 | APPARATUS AND METHOD OF CONTROLLING CAPACITANCE DETECTION, AND TOUCHSCREEN APPARATUS - There are provided an apparatus and a method of controlling capacitance detection, and a touchscreen apparatus. The apparatus includes: a driving circuit unit providing driving signals including a preset number of driving pulses to a plurality of respective driving electrodes of a panel unit; a detecting circuit unit removing electrical noise from a first voltage corresponding to a capacitance change in the panel unit when the electrical noise is included in the first voltage; and a controlling unit controlling the driving circuit unit to generate an additional driving pulse when the electrical noise is included in the first voltage. | 04-17-2014 |