Method and apparatus for driving liquid crystal display device
AssigneeLG. Philips LCD Co., Ltd.
InventorsHee Hong, Kyung Kwon
Life of this patent
Estimating the term…
Abstract
A driving method and apparatus of a liquid crystal display device is described. Data from a current frame is compressed and delayed by a frame memory. Compressed data of the current frame and the compressed data of a previous frame from the frame memory are restored. The restored data of the previous frame is compared with the restored data of the current frame to determine a modulated portion for the current frame in accordance with the comparison result. The current frame data is modulated by adding the modulated portion to the current frame data. Only a single frame memory is disposed with in the driving apparatus.
Claims28
A method of driving a display device, the method comprising:
- compressing current frame data;
- storing the compressed current frame data in a frame memory;
- restoring the compressed data of the current frame and compressed data of a previous frame from the frame memory;
- comparing the restored data of the previous frame with the current frame data and determining a modulated portion of the current frame in accordance with the comparison result;
- and
- modulating the current frame data by adding the modulated portion to the current frame data.
A driving apparatus of a display device, the driving apparatus comprising:
- a compressor to compress current frame data;
- a frame memory to store the compressed current frame data;
- a restorer to restore the compressed data of the current frame and compressed data of a previous frame from the frame memory;
- a modulated portion determiner to compare the restored data of the previous frame with the current frame data and to determine a modulated portion for the current frame in accordance with the comparison result;
- and
- a modulator to modulate the current frame data by adjusting the current frame data using the modulated portion.
Dependencies are inferred from the claim text.