Abstract: A portable computing apparatus according to an exemplary embodiment of the present general inventive concept includes a first device, and a second device having a coupling groove where the first device is detechably coupled, where the first device has a first coupling position where a first end of the first device is coupled with the coupling groove by a first connection angle, and a second coupling position where a second end of the first device is coupled with a second connection angle different from the first connection angle.

Abstract: A portable computing apparatus according to an exemplary embodiment of the present general inventive concept includes a first device, and a second device having a coupling groove where the first device is detechably coupled, where the first device has a first coupling position where a first end of the first device is coupled with the coupling groove by a first connection angle, and a second coupling position where a second end of the first device is coupled with a second connection angle different from the first connection angle.

Abstract: A plasma display device, which gradually increases the current to the panel capacitors is disclosed. The display uses an inductor to reduce the current spike which would otherwise occur and create large electromagnetic interference.

Abstract: A driving apparatus of a plasma display panel (PDP) operates stably and reliably. The driving apparatus to drive the PDP includes a pulse application unit which applies a pulse to the PDP; and an energy recovery unit which comprises an inductor which generates LC resonance with a panel capacitor element of the PDP, an energy recovery determiner which determines the accumulation of energy during the LC resonance or emission of the accumulated energy to the PDP, and an energy storage unit which stores the accumulated energy, wherein the energy recovery determiner comprises a first falling switching device which determines the accumulation of the energy; and a second falling switching device which is connected between the first falling switching device and the energy storage unit, in order for the second falling switching device to form a current path toward the energy storage unit.

Abstract: A driver circuit for a plasma display panel is disclosed. The driver circuit has a switch which is shared between the reset driver portion of the driver circuit and the sustain driver portion of the driver circuit. The driver circuit sharing the switch between the two portions is smaller and cheaper than other driver circuits.

Abstract: A plasma display device, which gradually increases the current to the panel capacitors is disclosed. The display uses an inductor to reduce the current spike which would otherwise occur and create large electromagnetic interference.

Abstract: In a plasma display device and a driving apparatus thereof, a scan electrode driver for applying a driving voltage to a scan electrode has a diode including a cathode coupled to a sustain voltage supplying power and an anode coupled to a switch for applying a reset rising waveform to the scan electrode. In the scan electrode driver, when a switch for applying a reset rising waveform is turned on, the voltage at the scan electrode is gradually increased by a voltage that is less than the sustain voltage due to the breakdown voltage of the diode. Therefore, the number of power sources is reduced simplifying the circuit configuration and reducing the plasma display device production cost.

Abstract: A scan electrode driver for a plasma display device may include a set up voltage source that outputs a set up voltage, a rising ramp waveform generator that generates a rising ramp waveform in response to the set up voltage received from the set up voltage source and applies the rising ramp waveform to the plasma display panel, and a block unit arranged between the rising ramp waveform generator and one of the set up voltage source and the plasma display panel.

Abstract: A driving apparatus of a plasma display panel (PDP) operates stably and reliably. The driving apparatus to drive the PDP includes a pulse application unit which applies a pulse to the PDP; and an energy recovery unit which comprises an inductor which generates LC resonance with a panel capacitor element of the PDP, an energy recovery determiner which determines the accumulation of energy during the LC resonance or emission of the accumulated energy to the PDP, and an energy storage unit which stores the accumulated energy, wherein the energy recovery determiner comprises a first falling switching device which determines the accumulation of the energy; and a second falling switching device which is connected between the first falling switching device and the energy storage unit, in order for the second falling switching device to form a current path toward the energy storage unit.

Abstract: A plasma display device and a driving method thereof are provided. A sustain pulse is applied to a scan electrode while biasing a sustain electrode at a predetermined voltage during a sustain period. A first sustain pulse having a first magnitude of voltage is applied at lease once to the scan electrode during a first part of the sustain period, and a second sustain pulse and a third sustain pulse are alternately applied to the scan electrode during a second part of the sustain period. The second sustain pulse has a voltage of a second magnitude that is smaller than the first magnitude, and the third sustain pulse has a voltage of a third magnitude that is larger than the second magnitude.

Abstract: A plasma display device driving method that sets the voltage applied to the sustain electrode in the falling period of the reset period to be higher than the voltage applied to the sustain electrode in the address period. As a result, the address voltage applied to the address electrode in the address period can be reduced.

Abstract: A device is provided that can be used to lock auxiliary, or peripheral, devices in portable computers. A portable computer using the device may be constructed using a housing, or body, for the portable computer that has a recessed peripheral port in a side wall of the computer body. A peripheral port is then engageable with the port in the side wall of the portable computer. A face plate on the front side of the peripheral port has a greater area than the area of the front side of the peripheral device, forming a rim around the peripheral device that fits flush with the outer surface of the body. A bracket and a locking unit are then used to secure the peripheral device to the portable computer.