Samsung Sdi Co., Inc.

Soo-Jin Lee

Im-Su Choi

Woo-Jin Kim

Young-Woo Shim

An after-image prevention apparatus and method for a plasma display panel having a plurality of address electrodes and a plurality of scan and sustain electrodes arranged in pairs and in a zigzag pattern. An average signal level until the current frame from currently input picture data and an average signal level of each cell until the previous frame as stored in a memory section is calculated. The average signal level is compared with the picture data. An attenuation coefficient is generated corresponding to the difference between the average signal level and the picture data. The picture data is multiplied by the attenuation coefficient to output correction data, thereby preventing an after-image phenomenon on the plasma display panel.

Plasma display panel method and apparatus for preventing after-image on the plasma display panel

Disclosed is a plasma display panel, and an apparatus and method for driving the same. In the method of the present invention, an image signal is received and gamma-corrected according to a gamma correction curve. The gamma-corrected image signal is generated as subfield data according to a compressed subfield generation table. The average signal level of the image signal is calculated and correction according to an average signal level correction inverse curve is performed regarding the generation of the subfields for each gray level, and a sustain electrode driving signal and a scan electrode driving signal corresponding to the average signal level are output.

Plasma display panel, and apparatus and method for driving the same

A driving apparatus of a plasma display panel (PDP) and a method for displaying pictures on the plasma display panel, which are capable of increasing the ability to express a low gray scale. Common non-emitted sub-fields are detected, using picture signal data having the maximum level of the gray scale, of all input picture signal data within one frame of the input picture signal data. Sub-fields having higher weights are divided into a plurality of sub-fields having lower weights and the plurality of sub-fields having lower weights are rearranged as sub-fields for expression of gray scale, corresponding to the number of non-emitted sub-fields. In addition, the number of sustains corresponding to the rearranged sub-fields are generated.

Plasma display panel having a driving apparatus and method for displaying pictures

An apparatus for driving a plasma display panel and a method for processing pictures of a plasma display panel. An input video signal is converted into sub-field data. It is determined whether address consumption power of the sub-field data is high. When the address consumption power is high, interlaced scanning is carried out. It is determined whether lines having sub-field data items identical or similar in a row direction exist using the sub-field data. The lines are sequentially scanned. Accordingly, the number of times of switching address electrodes is reduced and thus the address consumption power is decreased.

Apparatus for driving plasma display panel and method for displaying pictures on plasma display panel

An image data correction method and apparatus for a plasma display panel, and a plasma display panel device having the apparatus. The image data correction method calculates a load factor of video signals fed into a plasma display panel, and determines an automatic power control level corresponding to the calculated load factor. The method further involves generating sustain pulse information and the number of subfields and selecting a correction table corresponding to the number of subfields and the automatic power control level from the memory. Then, the image data is corrected with reference to the correction table. By this image data correction, white chromaticity can be maintained constantly while enhancing the color reproducibility of each subfield.

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Cheonan, South Korea

Soo-Jin Lee