Method and apparatus for controlling address power for a plasma display panel
First Claim
1. An apparatus for controlling address power of a plasma display panel, the plasma display panel having pluralities of address electrodes, scan electrodes, and sustain electrodes, the scan electrodes and sustain electrodes forming pairs and being alternately disposed on the plasma display panel, the apparatus comprising:
- a memory for storing sustain discharging information with respect to load ratios;
an address power controller responsive to an externally input video signal for calculating a sum of pixel differences between lines of the externally input video signal and for outputting video data modified by multiplying the video signal with an attenuation coefficient corresponding to the calculated sum;
a video data processor for processing the modified video data;
an average signal lever detector for measuring a load ratio of the modified video data; and
a sustain power controller for outputting sustain discharge information corresponding to a load ratio of currently input data.
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Accused Products
Abstract
A method and apparatus for controlling address power of a plasma display panel and a plasma display panel device having that apparatus, wherein the plasma display panel includes pluralities of address electrodes, scan electrodes, and sustain electrodes, the scan electrodes and sustain electrodes forming pairs and being alternately disposed. After determining an attenuation coefficient that corresponds to a sum of pixel differences between lines throughout an input video signal, output video data is modified by multiplying the attenuation coefficient to the input video data. According to such a power control of address data, power consumption is reduced since the number of times of switching address data is reduced.
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Citations
13 Claims
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1. An apparatus for controlling address power of a plasma display panel, the plasma display panel having pluralities of address electrodes, scan electrodes, and sustain electrodes, the scan electrodes and sustain electrodes forming pairs and being alternately disposed on the plasma display panel, the apparatus comprising:
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a memory for storing sustain discharging information with respect to load ratios;
an address power controller responsive to an externally input video signal for calculating a sum of pixel differences between lines of the externally input video signal and for outputting video data modified by multiplying the video signal with an attenuation coefficient corresponding to the calculated sum;
a video data processor for processing the modified video data;
an average signal lever detector for measuring a load ratio of the modified video data; and
a sustain power controller for outputting sustain discharge information corresponding to a load ratio of currently input data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A plasma display panel device comprising:
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a plasma display panel having pluralities of address electrodes, scan electrodes, and sustain electrodes, the scan electrodes and the sustain electrodes forming pairs and being alternately disposed;
a controller responsive to an externally input video signal for calculating a sum of pixel differences between lines of the externally input video signal, outputting video data modified by multiplying the externally input video signal with an attenuation coefficient corresponding to the calculated sum, measuring a load ratio of the externally input video signal, and outputting sustain discharge pulse information corresponding to the measured load ratio;
an address data generator for generating address data corresponding to the modified data received from the controller, and for accordingly applying the address data to the address electrodes of the plasma display panel; and
a sustain-scan pulse generator for generating sustain pulses and scan pulses corresponding to sustain discharge information received from the controller, and for respectively applying the sustain pulses and the scan pulses to the sustain electrodes and the scan electrodes. - View Dependent Claims (8, 9)
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10. A method for controlling address power of a plasma display panel, the plasma display panel having pluralities of address electrodes, scan electrodes, and sustain electrodes, the scan electrodes and sustain electrodes forming pairs and being alternately disposed, the method comprising:
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calculating a sum of pixel differences between lines throughout an input video signal;
determining an attenuation coefficient that corresponds to the calculated sum; and
outputting video data modified by multiplying the video signal with the attenuation coefficient. - View Dependent Claims (11, 12, 13)
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Specification