Abstract: A display device include a first surface, a sensing capacitor having a sensing input electrode and a sensing output electrode, wherein the sensing capacitor stores a first amount of charges and the sensing capacitor stored a second amount of charges when an external object contacts on the first surface, a sensing input signal line electrically connected with the sensing input electrode and receiving a sensing input signal to charge the sensing capacitor to the first amount of charges, a sensing output signal line electrically connected with the sensing output electrode, and a sensing signal processor connected with the sensing output signal line, wherein the sensing signal processor determines whether an external objects contact on the first surface based on a voltage difference between the first amount of charges and the second amount of charges stored in the sensing capacitor.

Abstract: A display panel driving apparatus includes a user position data output part and a move control part. The user position data output part receives user image data and outputs user position data based on the user image data. The user image data is generated by photographing a user. The user position data is generated by mapping a position of the user to a display panel. The move control part compares a plurality of set area data with the user position data and outputs a move control signal based on the comparison of the user position data and the set area data. The set area data is set to the display panel. The move control signal controls a movement of the display panel.

Abstract: A display panel driving apparatus includes a user position data output part and a move control part. The user position data output part receives user image data and outputs user position data based on the user image data. The user image data is generated by photographing a user. The user position data is generated by mapping a position of the user to a display panel. The move control part compares a plurality of set area data with the user position data and outputs a move control signal based on the comparison of the user position data and the set area data. The set area data is set to the display panel. The move control signal controls a movement of the display panel.

Abstract: A display device include a first surface, a sensing capacitor having a sensing input electrode and a sensing output electrode, wherein the sensing capacitor stores a first amount of charges and the sensing capacitor stored a second amount of charges when an external object contacts on the first surface, a sensing input signal line electrically connected with the sensing input electrode and receiving a sensing input signal to charge the sensing capacitor to the first amount of charges, a sensing output signal line electrically connected with the sensing output electrode, and a sensing signal processor connected with the sensing output signal line, wherein the sensing signal processor determines whether an external objects contact on the first surface based on a voltage difference between the first amount of charges and the second amount of charges stored in the sensing capacitor.

Abstract: A broadcasting signal processing apparatus and a control method thereof are provided. The broadcasting signal processing apparatus includes a wireless antenna; a radio frequency (RF) module which tunes a broadcasting signal; a variable part which adjusts an impedance to match an impedance of the wireless antenna with an impedance of the RF module; and a controlling part which pre-stores impedance variable values for impedance matching and which controls the variable part to adjust the impedance based on one of the pre-stored impedance variable values corresponding to a broadcasting frequency of a selected broadcasting channel. The method includes tuning to a broadcasting frequency; determining whether an impedance used to match a wireless antenna with a radio frequency (RF) module is different from an impedance variable value; and if the impedance is different, adjusting the impedance.

Abstract: A portable system comprises a portable apparatus which performs a plurality of functions according to predetermined control information; and a supporting apparatus for the portable apparatus, the supporting apparatus comprising: a connecting part which is connectable to the portable apparatus; a storing part which stores the predetermined control information corresponding to the plurality of functions of the portable apparatus; and a controller which stores control information corresponding to a selected function among the plurality of functions in the storing part, and transmits the control information stored in the storing part to the portable apparatus for performing the selected function if the portable apparatus is connected to the connecting part.

Abstract: A broadcasting signal processing apparatus and a control method thereof are provided. The broadcasting signal processing apparatus includes a wireless antenna; a radio frequency (RF) module which tunes a broadcasting signal; a variable part which adjusts an impedance to match an impedance of the wireless antenna with an impedance of the RF module; and a controlling part which pre-stores impedance variable values for impedance matching and which controls the variable part to adjust the impedance based on one of the pre-stored impedance variable values corresponding to a broadcasting frequency of a selected broadcasting channel. The method includes tuning to a broadcasting frequency; determining whether an impedance used to match a wireless antenna with a radio frequency (RF) module is different from an impedance variable value; and if the impedance is different, adjusting the impedance.

Abstract: A power supply system of a display apparatus and a control method thereof comprising a DC (Direct current) converter to convert an AC (Alternating Current) voltage into a DC voltage; a PWM (Pulse Width Modulator) to generate a PWM signal; a transformer to receive the DC voltage of the DC converter and to output an AC voltage according to the PWM signal from the PWM; an output circuit to lower the AC voltage from the transformer and to supply the lowered voltage to various components; a sync signal supplier to generate a sync signal having a frequency equal to a frequency of a horizontal sync signal, which is externally input, to generate the PWM signal synchronized to the horizontal sync signal and to supply the sync signal to the PWM; and a controller to determine a power saving mode depending on whether the horizontal sync signal or a vertical sync signal is externally input, and to control the sync signal supplier to generate the sync signal having a frequency equal to the frequency of the horizontal sync

Abstract: A display device includes a displaying part which displays a picture based on a video signal output from a computer main body, a power supply which supplies driving power corresponding to one of a normal mode and a power saving mode, a power saving mode selection part which allows selection of the power saving mode, and a micro controller which controls the power supply to supply the driving power to the display device according to the power saving mode selected through the power saving mode selection part. Therefore, the display device can perform a power saving function by itself according to a selection by a user.

Abstract: A power supply system of a display apparatus and a control method thereof comprising a DC (Direct current) converter to convert an AC (Alternating Current) voltage into a DC voltage; a PWM (Pulse Width Modulator) to generate a PWM signal; a transformer to receive the DC voltage of the DC converter and to output an AC voltage according to the PWM signal from the PWM; an output circuit to lower the AC voltage from the transformer and to supply the lowered voltage to various components; a sync signal supplier to generate a sync signal having a frequency equal to a frequency of a horizontal sync signal, which is externally input, to generate the PWM signal synchronized to the horizontal sync signal and to supply the sync signal to the PWM; and a controller to determine a power saving mode depending on whether the horizontal sync signal or a vertical sync signal is externally input, and to control the sync signal supplier to generate the sync signal having a frequency equal to the frequency of the horizontal sync

Abstract: A display device includes a displaying part which displays a picture based on a video signal output from a computer main body, a power supply which supplies driving power corresponding to one of a normal mode and a power saving mode, a power saving mode selection part which allows selection of the power saving mode, and a micro controller which controls the power supply to supply the driving power to the display device according to the power saving mode selected through the power saving mode selection part. Therefore, the display device can perform a power saving function by itself according to a selection by a user.

Abstract: A circuit for compensating a horizontal centering in a video display apparatus includes a control circuit, a horizontal centering compensation circuit, and a horizontal deflection output circuit. The circuit functions such that even when the video display mode of a multi-mode monitor is shifted, any biasing of the picture can be automatically minimized or prevented. The control unit counts the frequency of externally input video synchronizing signals to output a first switching control signal or a second switching control signal based on the counted result of the frequency of the video synchronizing signals. The horizontal centering compensation circuit provides a first power and a second power, the first and second powers having voltage levels and directions different from each other, to output the first power or the second power in response to the first switching control signal or the second switching control signal of the control unit.

Abstract: A duty cycle alteration circuit can simply alter a duty cycle of a pulse by using a Schmitt circuit in a monitor. The duty cycle alteration circuit includes: a microcomputer for outputting a waveform amplifying ratio control signal; an amplifying circuit for inputting and amplifying the waveform amplifying ratio control signal outputted by the microcomputer or a triangular wave and for outputting an amplified triangular wave; and a Schmitt circuit for establishing a logic “high” level and a logic “low” level centering around a reference level according to the amplified triangular wave supplied from the amplifying circuit and for changing a duty cycle on the basis of the logic “high” and “low” levels and for outputting a rectangular wave having an altered duty cycle.

Abstract: A video control circuit controls the gains for red(R), green(G), and blue(B) color video signals inputted to a monitor, the brightness and contrast of a video display on the monitor, and the bias of a cathode ray tube within the monitor. A microcomputer outputs, in an I2C manner, data for a control signal for controlling contrast, brightness, gain and/or bias. The data are inputted to an I2C data process/PWM signal generation section which converts the data to PWM signal outputs. Rectification sections rectify the PWM signal outputs to provide contrast, brightness, gain and cutoff voltage signals. Only two output terminals of the microcomputer are employed for outputting a clock signal and the data for the control signal so as to control contrast, brightness, gain and bias control signals according to output signals of the variable resistors VR11 and VR12 and a bias/grain control section. A clock signal is generated by the microcomputer in synchronization with the data DATA.

Abstract: A display device having a set protecting function upon generation of an abnormal voltage includes a horizontal deflection circuit for providing a horizontal signal to a deflection yoke connector, a high voltage output circuit for supplying a high voltage to an anode in accordance with an oscillating signal applied from the horizontal deflection circuit, a power supply circuit for supplying power to the horizontal deflection circuit, and an abnormal voltage detector disposed between the deflection yoke connector, and the high voltage output circuit and the power supply circuit, for detecting whether the deflection yoke connector is connected and whether a part of the high voltage output circuit is damaged, to thereby control a power output of the power supply circuit in accordance with a detected result.