Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-03-27
2007-03-27
Lao, Lun-Yi (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S067000, C345S210000, C345S204000, C315S169400
Reexamination Certificate
active
10438177
ABSTRACT:
The present invention provides a drive apparatus and method for a plasma display panel, in which the drive apparatus and method improve contrast and prevent mis-discharge. According to the drive method, in a reset interval of a first sub-field, a voltage having an increasing ramp waveform is applied to scan electrodes during a first interval, and common electrodes are floated during a portion of the first interval such that a voltage of the common electrodes is increased to an initial voltage, which corresponds to a voltage applied to the scan electrodes and to a voltage applied to both sides of panel capacitors. Further, in a reset interval of a second sub-field, which exhibits a higher gray than the first sub-field, a voltage having an increasing ramp waveform is applied to the scan electrodes during a second interval, and floating the common electrodes during a portion of the second interval such that the voltage of the common electrodes is increased to another voltage, which is less than the initial voltage.
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Christie Parker & Hale LLP
Lao Lun-Yi
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