摘要:
A cyclic digital to analog converter (CDAC) in a pipeline structure includes a first CDAC block and a second CDAC block. The first CDAC block receives a first digital signal and converts the first digital signal to a first analog value. The first CDAC block includes a charging capacitor for charging according to the first digital signal and a first storing capacitor for storing the first analog value. The second CDAC block receives a second digital signal and converts the second digital signal to a second analog value. The second CDAC block includes the charging capacitor for charging according to the second digital signal and a second storing capacitor for storing the second analog value. The first CDAC block and the second CDAC block share the charging capacitor.
摘要:
A method of adjusting value includes calculating a value of saturation from an input image signal, and adjusting a value of value of the input image signal according to a calculated saturation value. In the method, the value of value of the input image signal is adjusted by using a value adjustment algorithm for determining a value adjustment rate that decreases the value according to the saturation value.
摘要:
A multi-touch sensing includes a voltage-current converter converting an input voltage into a current. A touch sensing block senses touch of an object. An amplifier includes a first input terminal connected to an output terminal of the voltage-current converter and to a first terminal of the touch sensing block. A second input terminal of the amplifier is grounded. An output terminal of the amplifier is connected to a second terminal of the touch sensing block.
摘要:
Touch screen systems and method of compensating noise in same are presented. One touch screen system includes; a touch screen panel having sense channels providing a sense output corresponding to a capacitance variation associated with an applied touch input as detected by one or more sensing units connected to the sense channels. A parasitic capacitance is accumulated in the sense channels as the touch input is applied. The touch screen system also includes a touch controller receiving the sense output and including; a noise compensation block configured to generate a compensation capacitance to compensate for the parasitic capacitance and provide a compensation output, and a signal conversion unit that receives the sense output and the compensation output and generates a noise compensated sense output.
摘要:
A method of adjusting value includes calculating a value of saturation from an input image signal, and adjusting a value of value of the input image signal according to a calculated saturation value. In the method, the value of value of the input image signal is adjusted by using a value adjustment algorithm for determining a value adjustment rate that decreases the value according to the saturation value.
摘要:
A multi-touch sensing includes a voltage-current converter converting an input voltage into a current. A touch sensing block senses touch of an object. An amplifier includes a first input terminal connected to an output terminal of the voltage-current converter and to a first terminal of the touch sensing block. A second input terminal of the amplifier is grounded. An output terminal of the amplifier is connected to a second terminal of the touch sensing block.
摘要:
An adaptive digital filtering method and apparatus for touch data in a touch system is described. Adaptive digital filtering involves estimating a signal-to-noise ratio (SNR) for stored touch data, and reducing a digital filter order if the SNR is high and increasing the digital filter order if the SNR is small.
摘要:
An apparatus for generating a voltage required for a semiconductor device by using a voltage supplied from an external power supply is provided. A charge pump circuit includes a first circuit comprising a first capacitor and a first group of switching elements and controlling the first group of switching elements according to first and second switching signals to transfer a voltage charged in the first capacitor to a target terminal during a first period and to charge the first capacitor with a reference voltage applied to a first input terminal of the first capacitor during a second period, and a second circuit comprising a second capacitor, a third capacitor connected between an output terminal and a ground terminal and a second group of switching elements, and controlling the second group of switching elements according to the first and second switching signals to connect a first terminal of the second capacitor to the ground terminal during the first period, connect the first terminal of the second capacitor to a power supply voltage input terminal during the second period, connect a second terminal of the second capacitor to the power supply voltage input terminal when a voltage of the second terminal of the second capacitor is lower than a voltage of the target terminal during the first period, and connect the second terminal of the second capacitor to the output terminal during the second period.
摘要:
In a liquid crystal display (LCD), a liquid crystal panel includes a plurality of subpixels. Source drivers drive source lines of the liquid crystal panel and gate drivers drive gate lines of the liquid crystal panel. A timing controller generates combination pixel data using current pixel data and previous pixel data, and supplies the generated combination pixel data to the source drivers. The previous pixel data is generated by delaying the current pixel data by a first time period.
摘要:
A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.