Abstract: An information processing apparatus includes a virtual camera configured to capture a character in a virtual space; a display unit configured to display the character and a background, the background including an object; a detection unit configured to detect first contact position information on a first position at which a first virtual object provided between the virtual camera and the character contacts the object of the background; and a motion control unit configured to control a motion of the virtual camera based on the first contact position information detected by the detection unit such that the virtual camera avoids the object of the background.

Abstract: An information processing apparatus includes a virtual camera configured to capture a character in a virtual space; a display unit configured to display the character and a background, the background including an object; a detection unit configured to detect first contact position information on a first position at which a first virtual object provided between the virtual camera and the character contacts the object of the background; and a motion control unit configured to control a motion of the virtual camera based on the first contact position information detected by the detection unit such that the virtual camera avoids the object of the background.

Abstract: In a plasma display apparatus, the address discharge is stabilized, the contrast is sharpened, and the image display quality is improved. A first up-ramp waveform voltage is applied to the scan electrode, and then a voltage causing no discharge to the scan electrode is applied to the scan electrode, in the sustain period of a weak-discharge sustain operation subfield in a discharge cell that is to be subjected to a forced initializing operation in the initializing period of the subfield immediately after the weak-discharge sustain operation subfield. A second up-ramp waveform voltage is applied to the scan electrode after generation of the first up-ramp waveform voltage, in the sustain period of the weak-discharge sustain-operation subfield in a discharge cell that is to be subjected to a selective initializing operation in the initializing period of the subfield immediately after the weak-discharge sustain-operation subfield.

Abstract: A sustain pulse generation circuit of a plasma display device generates and switches a first sustain pulse for causing light emission having double peaks, a second sustain pulse having a falling edge steeper than that of the first sustain pulse, and a third sustain pulse having a rising edge and a falling edge steeper than those of the first sustain pulse and causing light emission having a single peak. The second sustain pulse or the third sustain pulse is generated immediately before the third sustain pulse. The first sustain pulse is generated immediately before the second sustain pulse. Provided between the second sustain pulse and the third sustain pulse and between the third sustain pulses is a first overlap period in which a time period for causing the corresponding sustain pulse to rise is overlapped with a time period for causing the corresponding sustain pulse to fall.

Abstract: The method for driving a plasma display panel effects control of the sub-fields in a manner that at least one sub-filed carries out, in its initializing period, an all-cell initializing operation on the discharge cells and the plurality of sub-fields other than the aforementioned sub-field selectively carry out an addressing operation in each discharge cell; at the same time, two or more predetermined sub-fields carry out an addressing operation only when at least one sub-field had an addressing operation after the all-cells initializing operation; and an unusual-charge erase period, where scan electrodes SC-SCn undergo application of voltage with a rectangular waveform, is provided after the initializing period of at least one sub-field of the predetermined sub-fields.

Abstract: A plasma display device has a plasma display panel, a scan electrode driving circuit, a sustain electrode driving circuit, and a data electrode driving circuit. In the sustain period of at least one subfield, the scan electrode driving circuit and the sustain electrode driving circuit apply a plurality of sustain pulses alternately to scan electrodes and sustain electrodes, and the data electrode driving circuit applies a data pulse to data electrodes by changing the timing according to the sustain pulses while the sustain pulses are applied.

Abstract: The plasma display panel driving method is a method of driving a panel provided with a plurality of discharge cells, each having a scan electrode and a sustain electrode, and includes forming one-field period by arranging a plurality of sub-fields including an initializing period, address period, and sustain period, wherein sustain pulse is either a first sustain pulse for generating emission having one peak at the discharge cell or a second sustain pulse for generating emission having two peaks at the discharge cell, and rise time of second sustain pulse applied to the scan electrode and rise time of second sustain pulse applied to the sustain electrode are individually set in accordance with ratios of discharge cells for emitting light in the sustain period of the sub-field.

Abstract: A sustain pulse generation circuit of a plasma display device generates and switches a first sustain pulse for causing light emission having double peaks, a second sustain pulse having a falling edge steeper than that of the first sustain pulse, and a third sustain pulse having a rising edge and a falling edge steeper than those of the first sustain pulse and causing light emission having a single peak. The second sustain pulse or the third sustain pulse is generated immediately before the third sustain pulse. The first sustain pulse is generated immediately before the second sustain pulse. Provided between the second sustain pulse and the third sustain pulse and between the third sustain pulses is a first overlap period in which a time period for causing the corresponding sustain pulse to rise is overlapped with a time period for causing the corresponding sustain pulse to fall.

Abstract: A method for driving a plasma display panel including a plurality of discharge cells each having a scan electrode and a sustain electrode. One field includes a plurality of subfields each having an address period for generating address discharge in a discharge cell, and a sustain period for alternately applying a sustain pulse to the scan electrode and the sustain electrode to generate sustain discharge in the discharge cell in which the address discharge has been generated. The sustain pulse includes a first sustain pulse rising gently and a second sustain pulse rising more steeply than the first sustain pulse. At least one of the sustain pulses applied secondly and thirdly to the scan electrode is the second sustain pulse, and at least one of the sustain pulses applied secondly and thirdly to the sustain electrode is the second sustain pulse.

Abstract: The method for driving a plasma display panel effects control of the sub-fields in a manner that at least one sub-filed carries out, in its initializing period, an all-cell initializing operation on the discharge cells and the plurality of sub-fields other than the aforementioned sub-field selectively carry out an addressing operation in each discharge cell; at the same time, two or more predetermined sub-fields carry out an addressing operation only when at least one sub-field had an addressing operation after the all-cells initializing operation; and an unusual-charge erase period, where scan electrodes SC-SCn undergo application of voltage with a rectangular waveform, is provided after the initializing period of at least one sub-field of the predetermined sub-fields.