Abstract: Disclosed are an energy recovery apparatus and method for a plasma display panel. The energy recovery apparatus includes a sustain voltage source for supplying a sustain voltage, a panel capacitor formed equivalently at a discharge cell, a first charging circuit for forming a first charging path when one side of the panel capacitor is charged, a second charging circuit for forming a second charging path when the other side of the panel capacitor is charged, a first power circuit for supplying the sustain voltage to the panel capacitor and forming the first charging path, and a second power circuit for supplying a ground voltage generated from a ground voltage source to the panel capacitor and forming the second charging path. The energy recovery apparatus and method according to the present invention can decrease components in number and reduce power consumption and manufacturing cost by charging the other side of the panel capacitor using a charging voltage of one side of the panel capacitor.

Abstract: In the case where processing is implemented in a medium mode, by interconnecting connectors 10 and 28, processing of information to be displayed on a memory type display panel 2 is implemented by a host display processing device 21; in the case where processing is implemented in a stand-alone mode, by disconnecting the connectors 10 and 28 from each other, processing of information to be displayed on the memory type display panel 2 is implemented by an information display sheet 1 itself.

Abstract: An analog buffer includes a comparator unit for comparing an input signal to be charged on a signal line of a display panel with an output signal charged on the signal line of the display panel to output a control signal; and a current switching unit for discharging an output current from the signal line of the display panel or charging an input current on the signal line of the display panel in accordance with the control signal output by the comparator unit the comparator unit smallest and to thus minimize leakage current.

Abstract: Let a drive circuit chip shrink in outer shape size to thereby enable miniaturization of a display device as a whole. The display device is equipped with a plurality of pixels disposed on a substrate in the form of a matrix and more than one drive circuit chip GDR as mounted on the substrate for causing these pixels to perform a display operation, wherein the drive circuit chip GDR has a plurality of output terminals OT for connection to output wiring lines GL formed on the substrate and a plurality of dummy terminals DT disposed adjacent to one another, and wherein at least one of the output wiring lines GL connected to the output terminals OT is not connected to any one of the dummy terminals DT and is disposed to pass through between the mutually adjacent dummy terminals DT.

Abstract: A liquid crystal display includes: a plurality of scanning lines; a plurality of data lines overlapping the plurality of scanning lines at a plurality of intersection regions; a plurality of pixels located at the plurality of intersection regions; and a scanning line driver configured to drive the plurality of pixels by sequentially scanning the plurality of scanning lines. The plurality of scanning lines include a first scanning line and a second scanning line. The plurality of pixels include a first pixel associated with the first scanning line and a second pixel associated with the second scanning line. The scanning line driver drives the second pixel after the first pixel in a first period, and drives the first pixel after the second pixel in a second period.

Abstract: Disclosed herein is a method and apparatus for driving a plasma display panel, which improves contrast characteristics and preventing a low discharge making a cell non-luminous at a specific gray scale.

Abstract: An apparatus, method and computer program product for controlling a screen brightness value of a terminal having a camera and including a controller which controls the terminal to sense an illumination intensity around the terminal and to determine a level of the illumination intensity. Also included is a display unit which controls the screen brightness value of the terminal based on the level of illumination intensity determined by the controller.

Abstract: The present invention provides a display capable of making flicker difficult to be observed and of reducing power consumption. The display comprises first and second pixel portions including subsidiary capacitances having a first electrode which is connected to a pixel electrode and a second electrode; first and second subsidiary capacitance lines which are connected to the second electrodes of the subsidiary capacitances of the first and second pixel portions, respectively; and a signal providing circuit including a plurality of signal providing circuit portions which provide first and second signals to the first and second subsidiary capacitance lines, respectively.

Abstract: A display panel driving circuit includes gate lines, data lines, a first selector, a second selector, liquid crystal cells and a drive section. The gate lines extend to a first direction. The data lines extend to a second direction. The first selector selects a selection gate line from the gate lines. The second selector selects a selection data line from the data lines. The liquid crystal cells are placed in positions corresponding to crossover points between the gate lines and the data lines. The drive section outputs drive signals which drive the liquid crystal cells through the second selector based on inputted picture signals. The second selector includes main switch sections and a switch control section. The switch control section controls switching on and off of the main switch sections. Each of main switch sections includes switch elements in series. The each of main switch sections is connected with associated one of data lines at one electrode.

Abstract: A plasma display panel sustain driver that has a decreased flywheel current.

Abstract: Output signals of a shift register in which latch circuits are connected in a plurality of stages are branched into two paths, NAND circuits are provided at the respective branched paths, and a sampling switch is turned on based on the output signals to sample an image signal into a data line. However, in response to the NAND circuit arranged at the left-branched path of the two path of a signal output by the first stage and the NAND circuit arranged at the right-branched path of the two path of a signal output by the last stage, neither the sampling switches nor the data lines are provided. With this, degradation of display quality is suppressed.

Abstract: The present invention relates to a liquid crystal display of a time divisional color display, which includes a plurality of pixels having liquid crystal capacitors, respectively, and light is not supplied to some pixels and light supplied to other pixels. Preferably, data voltages are applied to the pixels to which light is not supplied and data voltages are not applied to the pixel to which light is supplied. Accordingly, since a liquid crystal panel assembly is divided into several areas to be scanned sequentially and a light source of a light source unit corresponding to the area being scanned is maintained in light-off state, it is possible to secure enough data scan time as well as to increase light-on-time of the light sources. With this, time to charge electric charges of the liquid crystal capacitors is increased to improve image quality, and, according as light-on time of the light sources is increased, clearness of the image quality is also increased.

Abstract: An electro-luminescence display device includes an electro-luminescence display panel having pixel cells arranged at intersections of a plurality of data electrode lines and a plurality of scan electrode lines, the scan electrode lines being in a unit of at least two electrode lines, and each of the pixel cells along a same row being connected to at least one scan electrode line of a corresponding scan electrode line unit, and a multiplexer for selectively applying data signals to at least two of the data electrode lines during a time period.

Abstract: A method of converting image signals for a display device including six-color subpixels is provided, which includes: classifying three-color input image signals into maximum, middle, and minimum; decomposing the classified signals into six-color components; determining a maximum among the six-color components; calculating a scaling factor; and extracting six-color output signals.

Abstract: A display drive device is provided that comprises a drive circuit for driving a display unit in which pixels are formed, a nonvolatile storage circuit for storing screen information indicating a position of a pixel to be driven in the display unit, a control circuit for reading the screen information from the nonvolatile storage circuit, and a drive setup circuit for setting a position based on the screen information read by the control circuit in the drive circuit. The display drive device may also comprise a nonvolatile storage circuit for storing setup information to change a drive voltage to be supplied to the drive circuit, a control circuit for reading the setup information from the nonvolatile storage circuit at predetermined intervals, and a voltage supply circuit for supplying a drive voltage based on the setup information read by the control circuit to the drive circuit.

Abstract: A method of driving a plasma display panel for generating a stable sustain discharge is disclosed. In the method, first sustaining pulses are applied to the scan electrodes such that a sustain discharge can be generated. Second sustaining pulse are applied to the sustain electrodes in such a manner to be alternated with the first sustaining pulses. A stabilization pulse is applied to an address electrode provided alternately with the scan electrode for each discharge cell such that said sustain discharge can be generated via a surface-discharge area of a voltage close curve.

Abstract: A joystick controller comprises a housing (10) and a joystick (12) mounted for pivotal movement relative to the housing (10) by means of a ball (14) and socket joint (18,20). A yoke (18) resolves directional movement of the joystick (12) into a component direction. A sensor senses movement of the yoke (18) and generates an output indicative of movement of the joystick in the component direction. The socket (18,20) of the ball (14) and socket joint (18,20) is formed by the yoke (18).

Abstract: A position detection system includes a position pointer and a position detector. The “blind” area in which a position pointed to by a position pointer is undetectable is minimized. A transmission coil selector selects one of a plurality of transmission coils. A signal is generated by a transmission signal generator and supplied to a selected transmission coil. The selected transmission coil transmits the signal to the position pointer. A reception sensor coil selector selects a plurality of sensor coils. A position-indicating signal transmitted from the position pointer is received by each selected sensor coil, and a position pointed to by the position pointer is calculated from the received position-indicating signals. The position detection system loop coils are part of a resonant LC transmission circuit and are excited with a pulsed carrier signal to maximize the strength of the transmission signal, while dissipating relatively little power.

Abstract: An illumination control device is used in an optical pointer to cooperate with an optical sensor module and a light-emitting device to emit proper illuminance of light. The illumination control device includes a microcontroller generating a supplemental current when the optical pointer is in a power-saving state; and a controlled current amplifier in communication with the microcontroller, the optical sensor module and the light-emitting device for providing an amplified current for the light-emitting device to emit light. The controlled current amplifier amplifies a synthesized current of a light-emitting current generated by the optical sensor module and the supplemental current generated by the microcontroller to obtain the amplified current when the optical pointer is in the power-saving state.

Abstract: When an input power supply fed to a liquid crystal display device is cut off, a gate-on power supply for driving a gate line of a display part is automatically changed from a first power supply that reduces luminance inclination unevenness in the display part to a second power supply that causes residual charges in liquid crystal to be discharged. Consequently, at a normal driving time, a good quality display image with reduced unevenness in luminance inclination can be obtained, and at a power-off time, the display due to the residual charges of the liquid crystal is cleared so that an after image can be prevented from being visible.