Abstract:
Disclosed is an accessory for an electronic device, which is attached to the rear surface of an electronic device or an electronic device case. A first embodiment includes a cone having an empty space therein, a wrinkle part formed on a body thereof, and an upper portion and a lower portion that are open, an inverted cone having an empty space therein, a wrinkle part formed on a body thereof, an upper portion that is open, and a lower portion having a protrusion extending therefrom, the protrusion being composed of a neck part and a head part, a clamping ring, which is positioned inside the cone and coupled to the neck part of the protrusion in a state in which the protrusion is inserted into an upper opening of the cone, and a neck cylinder for surrounding the neck part of the protrusion.
Abstract:
Disclosed is an accessory for an electronic device, which is attached to the rear surface of an electronic device or an electronic device case. A first embodiment includes a cone having an empty space therein, a wrinkle part formed on a body thereof, and an upper portion and a lower portion that are open, an inverted cone having an empty space therein, a wrinkle part formed on a body thereof, an upper portion that is open, and a lower portion having a protrusion extending therefrom, the protrusion being composed of a neck part and a head part, a clamping ring, which is positioned inside the cone and coupled to the neck part of the protrusion in a state in which the protrusion is inserted into an upper opening of the cone, and a neck cylinder for surrounding the neck part of the protrusion.
Abstract:
Disclosed is a liquid crystal display panel driving circuit for driving a liquid crystal display panel with a resolution of N bits. N-bit digital data including upper X bits and lower Y bits is inputted. The liquid crystal display panel driving circuit includes a resistor string unit according to areas, a DAC converter switching unit according to areas, and an interpolation amplifier. The resistor string unit outputs analog reference voltages at different ratios according to three areas. The DAC converter switching unit receives the N-bit digital data, selects (Y+1) analog voltages from the analog reference voltages based on the upper X bits, outputs the (Y+1) analog voltages, and outputs the (Y+1) analog voltages of different combinations based on the lower Y bits. The interpolation amplifier receives the (Y+1) analog voltages and generates an interpolated output voltage by setting weights for the (Y+1) analog voltages by using multi-factors.
Abstract:
A circuit for measuring a capacitance value of a touch screen includes: a target capacitor unit having a target capacitor charged with a target charging voltage; a target voltage control unit to charge the target capacitor; a reference capacitor unit having a reference capacitor charged with a charging reference voltage; a reference voltage control unit to charge the reference capacitor; a comparator to compare the target charging voltage and the charging reference voltage and output a transition signal at a moment when the target charging voltage becomes higher than the charging reference voltage; and a controller to receive an output signal of the comparator and a clock signal and generate a digital output signal and a control signal, wherein a capacitance value of the target capacitor is measured using a time elapsed from a time when the target capacitor is initialized to a time when the transition signal is outputted.
Abstract:
A road guidance system for the blind. A plurality of RFID tags 10 are buried inside a pedestrian pavement 100 with information of said pavement 100 contained therein, along the pavement. A guide robot 20 has an RFID reader 21 for checking signals of said RFID tags 10 from said pavement 100 by passing therethrough, and an obstruction sensor 22 for sensing an obstruction. Wheels 23 are positioned on both sides of the guide robot. A controller 30 checks signals from said RFID reader 21 and said obstruction sensor 22 inside said guide robot 20, converts the checked information into voice signals and outputs the voice signals, and then controls the driving of said guide robot 20. A stick 40 is electrically connected to enable communication with said guide robot 20, thereby enabling safe loading and unloading.
Abstract:
An organic light emitting diode display includes a first scan switching element controlled in response to a first scan signal from a first scan line and connected between a first data line and a first node, a first storage capacitor connected between the first node and an AC voltage supply line, a first driving switching element controlled in response to a signal applied to the first node and connected between a second node and the AC voltage supply line, a light emitting element connected between a high-level voltage supply line and the second node, a first sensing switching element controlled in response to a first gate signal from a first gate line and connected between the first data line and the second node, a second scan switching element controlled in response to a second scan signal from a second scan line and connected between a second data line and a third node, a second storage capacitor connected between the third node and the AC voltage supply line, and a second driving switching element controlled in response to a signal applied to the third node and connected between the second node and the AC voltage supply line.
Abstract:
The present invention relates to a light emitting device for preventing a cross-talk phenomenon and a pectinated pattern. The light emitting device includes data lines, scan lines, pixels and discharging circuit. The data lines are disposed in a first direction. The scan lines are disposed in a second direction different from the first direction. The pixels are formed in cross areas of the data lines and the scan lines. The discharging circuit discharges respectively a first data line and a second data line of the data lines to a first discharge voltage and a second discharge voltage during a first sub-discharging time of a discharging time, and couple the first data line to the second data line during a second sub-discharging time of the discharging time. Here, the second discharge voltage has different magnitude from the first discharge voltage.
Abstract:
A circuit for processing a touch line signal of a touch screen includes a plurality of sensing read circuits and a switch unit. The plurality of sensing read circuits include sensing read-out units and integrators, respectively. The sensing read-out units are configured to precharge a first sensor capacitor and a second sensor capacitor formed on a touch screen panel with a ground voltage and a supply voltage, allow charges charged in the first sensor capacitor and the second sensor capacitor to be shared, and read-out a charge sharing result obtained by allowing the charges of the first sensor capacitor and the second sensor capacitor to be shared. The integrators are configured to integrate output voltages of the sensing read-out units. The switch unit is configured to sequentially connect output terminals of the plurality of sensing read circuits to an input terminal of an analog-to-digital converter.
Abstract:
A circuit for measuring a capacitance value of a touch screen includes: a target capacitor unit having a target capacitor charged with a target charging voltage; a target voltage control unit to charge the target capacitor; a reference capacitor unit having a reference capacitor charged with a charging reference voltage; a reference voltage control unit to charge the reference capacitor; a comparator to compare the target charging voltage and the charging reference voltage and output a transition signal at a moment when the target charging voltage becomes higher than the charging reference voltage; and a controller to receive an output signal of the comparator and a clock signal and generate a digital output signal and a control signal, wherein a capacitance value of the target capacitor is measured using a time elapsed from a time when the target capacitor is initialized to a time when the transition signal is outputted.
Abstract:
The present invention relates to a light emitting device for preventing a cross-talk phenomenon and a pectinated pattern. The light emitting device includes data lines, scan lines, pixels and a discharging circuit. The data lines are disposed in a first direction, and the scan lines are disposed in a second direction different from the first direction. The pixels are formed in cross areas of the data lines and the scan lines. The discharging circuit discharges at least one data line to a first discharge voltage during a first sub-discharging time of a discharging time, and changes the first discharge voltage into a second discharge voltage during a second sub-discharging time of the discharging time. The light emitting device discharges data lines to discharge voltages corresponding to cathode voltage of pixels, and so cross-talk phenomenon and pectinated pattern is not occurred in the light emitting device.