Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-02-26
2011-11-29
Mengistu, Amare (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S063000
Reexamination Certificate
active
08068069
ABSTRACT:
Plural subfields are provided in one single field period, where each subfield has an initialization period during which a gradient waveform voltage gently falling is applied to a scan electrode to generate initializing discharge in a discharge cell; a writing period during which a scan pulse voltage is applied to a scan electrode to generate writing discharge in a discharge cell; and a sustain period during which sustain discharge is generated in a discharge cell selected, by the number of times corresponding to a luminance weight. The lowest voltage of a falling gradient waveform voltage in a subfield with the smallest luminance weight is set so as to be lower than that with the largest luminance weight. A method of driving a plasma display panel is provided that generates stable writing discharge without increasing voltage required for generating writing discharge even for a large-screen, high-luminance panel.
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Origuchi Takahiko
Shoji Hidehiko
Ueda Mitsuo
Mengistu Amare
Panasonic Corporation
Sharifi-Tafreshi Koosha
Wenderoth , Lind & Ponack, L.L.P.
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