Abstract: A PDP driving method. A falling ramp voltage is applied to a scan electrode so as to reset a state of wall charges of a discharge cell during a reset period. In this instance, a sustain electrode is maintained at a high voltage during an initial period for applying the falling ramp voltage, and the voltage at the sustain electrode is reduced to a normal voltage at a latter part of the period for applying the falling ramp voltage. Accordingly, the voltage applied to an address electrode is reduced in an address period since an erased amount of the wall charges of the address electrode is reduced during the reset period.

Abstract: A panel capacitor is formed by a scan electrode and a sustain electrode. The voltage at the panel capacitor is reduced by turning on a transistor coupled between the scan electrode and the capacitor. As a result, the voltage within the panel capacitor exceeds the discharge firing voltage to discharge the panel capacitor. When the gate voltage of the transistor is reduced by an RC circuit, the transistor is turned off, and the scan electrode is floated. A discharge is then steeply quenched, and wall charges are finely controlled. Next, the above-noted operation is repeated by turning on the transistor.

Abstract: Provided are a method and apparatus for compensating an attitude of an inertial navigation system and a method and apparatus for calculating a position of the inertial navigation system using the same. The method of compensating an attitude of the inertial navigation system includes sensing movement of the system and outputting information for stoppage time periods and a movement time period of the system; receiving angular velocity information of the system during every time period and calculating a first attitude of the system using the angular velocity information; receiving gravity direction information of the system during the stoppage time periods, calculating a second attitude of the system using the gravity direction information, and calculating an attitude error of the system during every time period using the first attitude and the second attitude; and compensating the attitude error for the first attitude.

Abstract: A multi-touch decision apparatus, method, and medium are provided. The apparatus includes a sensor to sense an object contacting a specific position corresponding to one among a plurality of sensing channels arranged in a predetermined array, a detector to detect at least one of information about signal strength of the sensing channel in which the object is sensed and information about the number of sensing channels having a signal strength exceeding a first threshold, and a controller to determine whether a single touch or a multi touch has been sensed based on the detected information.

Abstract: A method for driving a plasma display panel, including a reset period, an address period, and a sustain discharge period, wherein the reset period has a rising ramp section. During the rising ramp section of the reset period, a flat period of maintaining a peak voltage of a rising ramp applied to a scan electrode is maintained for longer than a period until a variation in a state of wall charges of the scan electrode is ended in all discharge cells.

Abstract: A plasma display panel (PDP) and driving method that includes a floating reset process. A number of subfields are generated from input video signals, and subfield data for each subfield are output. A first voltage is applied to the first electrode according to sustain information to cause a discharge in a first discharge space, and the first electrode is floated during a period which corresponds to subfield data of a previous subfield. During this process, the floating time is controlled according to the number of addressed cells called for in previous subfield data.

Abstract: A method for driving a display panel including a first electrode, a second electrode and an address electrode crossed with the first and second electrodes to form a discharge cell. The method comprises, during a sustain period, alternately applying a voltage pulse to the first and second electrodes, and floating the first or the second electrode and maintaining it at a first voltage level while the voltage pulse is applied to the other electrode.

Abstract: An input system based on a three-dimensional inertial navigation system and a trajectory estimation method thereof is disclosed. The input system based on the three-dimensional inertial navigation system according to the present invention has acceleration sensors for outputting acceleration information just before motions, acceleration information on the motions, and acceleration information just after the motions; a rotation angle information estimation-computing portion for estimating rotation angle information on the motions through a predetermined computing process based on the outputted acceleration information just before the motions and acceleration information just after the motions; a conversion-computing unit for calculating position information on the motions based on the estimated rotation angle information on the motions and the outputted acceleration information on the motions; and an optimal plane-computing unit for projecting the position information on the motions onto an optimal plane.

Abstract: A PDP driving method. When a first sustain pulse is applied to a scan electrode during a sustain period, an address electrode is biased by a positive voltage, or the address electrode is biased. Therefore, when a large amount of wall charges are formed on the address and scan electrodes by address discharging during an address period, no main discharge is generated since a high potential of the address electrode is formed in the sustain period.

Abstract: A plasma display apparatus including a plasma display panel, on which terminal units of electrodes are drawn and disposed at an edge of the panel, a chassis base supporting the plasma display panel, and a circuit board arranged at a rear portion of the chassis base to drive the plasma display panel. A connection member has a first end arranged at the plasma display panel and a second end arranged at the circuit board, and the first end includes a wiring unit on which conductive lines are formed to correspond in a one-to-one basis with the electrode terminal units and to overlap the electrode terminal units. At least one conductive bump is arranged between each electrode terminal unit and conductive line to couple the terminal unit with the conductive line.

Abstract: A user interface technique using a two-dimensional capacitive sensor is provided. An apparatus for sensing movement of multi-touch points includes a capacitance sensing unit sensing two or more touch points, and sensing capacitance and a change in capacitance on the basis of the sensed touch points, a movement analyzing unit sensing and analyzing a change of movement of the two or more touch points using information on the sensed capacitance and change in capacitance, and a command processing unit processing a command corresponding to the change in movement according to a result of the analysis.

Abstract: A method for driving a panel includes classifying cells on the panel into a plurality of cell groups and performing an addressing and a sustain discharge on cells included in each of the cell groups using address electrodes, scan electrodes, and common electrodes on the panel; dividing a frame period into a plurality of subfields, allocating different gray scales to the plurality of subfields, respectively, and selectively driving the subfields to represent gradation of visible brightness of the cells on the panel; and sequentially performing an address period and a sustain period on the cell groups in at least one subfield. After the address period is performed on cells included in a cell group, the sustain period is performed on the cells included in the cell group. After the sustain period is completed on one cell group, the address period is performed on another cell group.

Abstract: Provided are an apparatus, method, and medium for expanding the number of input channels, more particularly, an apparatus and method for expanding the number of input channels, which can expand the number of input channels using a limited number of input code values. The apparatus includes a first input unit, a second input unit, and a control unit. The first input unit has a plurality of buttons arranged therein, the buttons each being assigned a predetermined input code value. The second input unit is formed on one side of the first input unit and has a plurality of buttons arranged therein, the buttons each being assigned a predetermined input code value and each being formed to be adjacent to neighboring buttons of the first input unit. The control unit performs predetermined functions depending on a combination of buttons manipulated in the first input unit and the second input unit.

Abstract: A display device for displaying pictures by sequentially performing an address period and a sustain period, such as, a plasma display panel (PDP), is provided. The pixels of a panel are arranged into a plurality of groups, and an address period and a sustain period are sequentially performed on the pixels of individual groups. While an address period is being performed on the pixels of a certain group, the pixels of other groups are idle. While a sustain period is being performed on the pixels of the group subsequent to the address period, a sustain period is selectively performed on the pixels of each of other groups that have already undergone an address period. Accordingly, a sustain discharge operation is performed within a short period of time after an address operation is performed on each of the pixels, so that a stable sustain discharge occurs even though narrow scan pulses and address pulses may be applied during the address operation. Also, the time required to address all pixels is reduced.

Abstract: A plasma display apparatus for discharging heat from a lateral surface of a device. The plasma display apparatus includes a display panel, a chassis base supporting the display panel, and a circuit unit supported by the chassis base and for driving the display panel. A signal transmission unit couples the display panel and the circuit unit and includes at least one device mounted on itself. A lateral heat radiation member surrounds a lateral portion of the device to diffuse heat from the lateral portion of the device.

Abstract: Provided are a method and apparatus for compensating for an acceleration error in an inertial navigation system (INS). The apparatus includes a motion detector that detects the motion of the INS and outputs information on stationary time intervals during which the INS is stationary and a moving time interval during which the INS is moving; a sensor portion that measures accelerations of the INS for the stationary time intervals and moving time interval, respectively; an error model determiner that determines an acceleration error corresponding to the moving time interval using accelerations measured during the stationary time intervals and outputs an acceleration subjected to correction of the acceleration error for the moving time interval; and a position calculator that integrates the corrected acceleration for the moving time interval and outputs the position of the INS.

Abstract: A scan electrode drive of an apparatus for driving a plasma display panel includes a switching output circuit, a reset/sustain circuit, an upper scan circuit, a lower scan circuit, a first switching circuit, and a second switching circuit. The switching output circuit includes upper transistors, lower transistors each paired with corresponding upper transistor, and common output lines of the respective upper and lower transistor pairs, and the common output lines are connected to the scan electrode lines, respectively. The reset/sustain circuit outputs the driving signals during the reset period and the display-sustain period. The first switching circuit connects or disconnects the upper common power line of all of the upper transistors of the switching output circuit to or from an output terminal of the reset/sustain circuit.

Abstract: A method, medium and apparatus for storing and restoring a register context for a fast context switching between tasks is disclosed. The method, medium and apparatus may improve overall operating speed of a system by increasing the speed of context switching. The method may include adding an update code for updating information of live registers to a task file that includes a code of a task to perform a specified function, converting the task file having the update code added thereto into a run file, updating the information of the live registers with the update code during running of the task using the run file, and storing a live register context according to the updated information of the registers.

Abstract: A plasma display panel sustain-discharge circuit. First and second signal lines for supplying first and second voltages and at least one inductor coupled between one end of the panel capacitor and a third voltage are formed. Energy is stored in the inductor through a path formed between the third voltage and the first signal line in a state where a voltage of one end of the panel capacitor is substantially fixed to the first voltage. The voltage of one end of the panel capacitor substantially decreases to the second voltage using resonance current generated between the inductor and the panel capacitor and the stored energy. Energy is stored in the inductor through a path formed between the third voltage and the second line in a state where a voltage of one end of the panel capacitor is substantially fixed to the second voltage.

Abstract: A method of reducing a code size of a program by controlling a control flow of the program using software in a computer system is disclosed.