Plasma display panel, and apparatus and method for driving the same
AssigneeSamsung SDI Co., Ltd.
InventorsSoo-Jin Lee, Im-Su Choi
Life of this patent
Estimating the term…
Abstract
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.
Claims8
A plasma display panel (PDP), comprising:
- a plurality of address electrodes, and a plurality of scan electrodes and sustain electrodes arranged in pairs;
- a controller for:
- performing a gamma correction on an image signal,
- generating subfield data according to a compressed subfield generation table and outputting the subfield data as an address electrode driving signal,
- calculating an average signal level of the gamma-corrected image signal and correcting the average signal level of the gamma-corrected image signal according to an average signal level correction inverse curve which has an inverse characteristic with respect to a gamma correction curve used for performing the gamma correction, and
- outputting a sustain electrode driving signal and a scan electrode driving signal corresponding to a corrected average signal level;
- an address electrode driver for applying the address electrode driving signal to the address electrodes;
- a sustain electrode driver for applying the sustain electrode driving signal to the sustain electrodes;
- and
- a scan electrode driver for applying the scan electrode driving signal to the scan electrodes,
- wherein correction with the average signal level correction inverse curve maintains linear power consumption.
An apparatus for driving a plasma display panel, comprising:
- a gamma corrector for gamma correcting an image signal;
- a subfield data generator for generating the image signal output from the gamma corrector as subfield data according to a compressed subfield generation table and outputting the subfield data as an address electrode driving signal;
- an average signal level calculator for calculating the average signal level of the image signal output from the gamma corrector and performing a correction according to an average signal level correction inverse curve regarding a generation of subfields for each gray level, the average signal level correction inverse curve having an inverse characteristic with respect to a gamma correction curve used for performing the gamma correction;
- and
- an automatic power controller for applying a sustain electrode driving signal and a scan electrode driving signal corresponding to the average signal level,
- wherein the correction with the average signal level correction inverse curve maintains linear power consumption.
A method for driving a plasma display panel, comprising:
- receiving an image signal and gamma correcting the image signal according to a gamma correction curve;
- generating subfield data from the gamma-corrected image signal according to a compressed subfield generation table and outputting the subfield data as an address electrode driving signal;
- calculating an average signal level of the gamma-corrected image signal and performing a correction according to an average signal level correction inverse curve regarding a generation of subfields for each gray level, the average signal level correction inverse curve having an inverse characteristic with respect to a gamma correction curve used for performing the gamma correction;
- and
- applying a sustain electrode driving signal and a scan electrode driving signal corresponding to the average signal level,
- wherein correction with the average signal level correction inverse curve maintains linear power consumption.
Dependencies are inferred from the claim text.