Patent application number | Description | Published |
20100134165 | TIME-TO-DIGITAL CONVERTER AND ALL-DIGITAL PHASE-LOCKED LOOP - A time-to-digital converter (TDC) includes a converter which receives a first signal and a second signal, delays the second signal in phases using a plurality of delay elements which are coupled in series, compares the delayed second signal with the first signal, and outputs a phase error of the second signal with respect to the first signal, a phase frequency detector which receives the first signal, and a third signal from one of the nodes in the plurality of delay elements, and outputs a phase difference between the first signal and the third signal, and a frequency detector which outputs a frequency error of the second signal with respect to the first signal as a digital code using an output signal of the phase frequency detector and the second signal. | 06-03-2010 |
20100156550 | ADJUSTABLE CAPACITOR, DIGITALLY CONTROLLED OSCILLATOR, AND ALL-DIGITAL PHASE LOCKED LOOP - An adjustable capacitor is provided including a capacitor unit including a plurality of capacitor groups aligned in a matrix format and a switch unit to adjust capacitance by connecting the plurality of capacitor groups in parallel according to a selection signal of a column and row of the matrix. Accordingly, the adjustable capacitor may be realized of a small size but with a high capacitance change rate. | 06-24-2010 |
20100238157 | METHOD OF MODULATING/DEMODULATING A SIGNAL, APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE APPARATUS - A method of modulating and demodulating a signal includes modulating data information included in an input data signal provided from an external source and clock information included in an input clock signal provided from the external source into a transmission signal, using (n+1) delay clock signals generated based on the input clock signal, where n is a natural number. The transmission signal is demodulated into an output clock signal including restored clock information and an output data signal including restored data information, using (m+1) delay clock signals generated based on the clock information, where m is a natural number less than n. | 09-23-2010 |
20110267122 | ALL-DIGITAL CLOCK DATA RECOVERY DEVICE AND TRANSCEIVER IMPLEMENTED THEREOF - The present invention relates to an all-digital clock data recovery (CDR) which is implemented by a digital filter and a digitally controlled oscillator. The CDR of the present invention comprises a phase detector producing a digital sequence of data and a digital sequence of edge by sampling the serial data stream with a clock, a de-serializer transforming the digital sequences of data and edge into n-bit bus, a digitally controlled oscillator (DCO) implemented by a multi-stage chain of inverters having a variable resistance switching matrix wherein the resistance of each element of the variable resistance switching matrix is varied in such a way that the supply current being fed to each inverter is controlled in pursuant to a digital control code, and thereby producing a clock whose oscillation frequency is updated and fed to the phase detector, a digital synthesis control logic circuit generating a thermometer-code-type digital control code out of the n-bit data and n-bit edge from the de-serializer wherein the thermometer-code-type digital control code is fed to the DCO, and a 2-bit direct forward path directly controlling the frequency of the clock being produced by the DCO with an operating speed which is faster than the digital synthesis control logic circuit by n times. | 11-03-2011 |
20120313675 | TOUCH PANEL SYSTEM WITH DELAY COMPENSATION CAPABILITY AND METHOD FOR COMPENSATING DELAY IN TOUCH PANEL SYSTEM - A touch panel system includes a signal generator configured to generate a reference signal and one or more channels. Each of the channels comprises a sensing unit configured to sense a touch thereon to output a sensing signal indicative of the touch; and a delay unit configured to adjust the reference signal based on a delay compensation value to compensate delay of the reference signal caused by the difference of distance between the signal generator and the channel. Further, each of the channels comprises an operation unit configured to perform an operation on the sensing signal and the reference signal from the delay unit to produce an operation result representing difference between the sensing signal and the adjusted reference signal; and a controller configured to determine the delay compensation value of the delay unit in each channel based on the voltage signal from the operation unit. | 12-13-2012 |
20120319974 | TOUCH SENSOR PANEL - A touch sensor panel used for a display device is provided. The touch sensor panel can precisely determine a touch location with a given area of electrodes, can reduce the number of channels required, and can reduce the influence of noise. In addition, the touch sensor panel can improve sensing resolution with a given number of electrode channels, can be robust against noise, and can improve linearity by precisely determining a touch location and visibility of displayed image by dummy electrodes. | 12-20-2012 |
20120327000 | MIXER FOR USE IN TOUCH PANEL SYSTEM AND METHOD FOR PREOCESSING SIGNALS IN THE MIXER - A mixer of a touch panel system includes a first switch configured to switch a sensing signal in accordance with a reference signal; a second switch configured to switch the sensing signal in accordance with a phase-inverted reference signal from the reference signal. Further, the mixer of the touch panel system includes a first low pass filter configured to perform low-pass filtering on a first output signal produced from the first switch; and a second low pass filter configured to perform low-pass filtering on a second output signal produced from the second switch. Furthermore, the mixer of the touch panel system includes a differentiator configured to differentiate signals produced from the first low pass filter and the second low pass filter, to thereby produce a signal of constant level as the sensing signal. | 12-27-2012 |
20130021296 | TOUCH-SENSING PANEL AND TOUCH-SENSING APPARATUS - The present invention relates to a touch-sensing panel and to a touch-sensing apparatus. The touch-sensing panel according to the present invention includes a substrate and one or more sensing regions prepared on the substrate, wherein the sensing region includes one or more first electrodes extending in a first axis direction, and one or more second electrodes extending in a second axis direction intersecting the first axis, and wherein at least some of the second electrodes are electrically connected to another second electrode arrayed at the same position on a first axis and included in another unit sensing region. According to the present invention, by disposing a second electrode in a space that is prepared inside a first electrode receiving a driving signal or disposing a second electrode such that the first electrode surrounds the second electrode according to the electrode type, a touch-sensing panel and touch-sensing apparatus which can accurately determine one or more touch inputs can be provided in a single-layer structure. | 01-24-2013 |
20130027348 | TOUCH SENSING PANEL AND DEVICE FOR DETECTING MULTI-TOUCH SIGNAL - Provided are a touch sensing panel and a touch sensing apparatus for detecting an absolute location with respect to at least one touch, including a driving electrode forming a mutual capacitance between a sensing electrode and the driving electrode in response to a predetermined driving signal and including at least two electrode surfaces divided by a width size. | 01-31-2013 |
20130106781 | TOUCH SENSING PANEL FOR DELIVERING SENSING SIGNAL TO TOUCH SENSOR CHIP BY USING CIRCUIT BOARD, AND TOUCH SENSING DEVICE | 05-02-2013 |
20130285945 | TOUCH SENSING PANEL AND TOUCH SENSING DEVICE FOR DETECTING MULTI-TOUCH SIGNAL - Provided are a touch sensing panel and a touch sensing panel for detecting multiple touches, including a first conductive trace formed along a first axial direction, a second conductive trace formed along a second axial direction intersecting the first axis, and an auxiliary conductive trace electrically connected to the second conductive trace, and formed along the first axial direction. An interpolation effect of a touched input moving in a horizontal direction may be expected, and an accuracy and linearity of the touched input may be enhanced through the auxiliary conductive trace generating a detected signal so that a dead region with respect to the touched input may be prevented from occurring. | 10-31-2013 |