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Data read-write method and device based on mixed storage device

The invention discloses a data read-write method based on a mixed storage device. The mixed storage device comprises a small non-volatile particle addressing medium and a large non-volatile particle addressing medium. An address mapping table is stored in the small non-volatile particle addressing medium and comprises at least one address mapping record, and each address mapping record comprises a logic address, a physical address corresponding to the logic address and the number of times of write operations corresponding to the logic address. The method comprises the step of receiving an operation request, the step of analyzing the logic address of the operation request and determining the physical address of data corresponding to the operation request in the mixed storage device according to the address mapping table, the step of reading and writing the data at the corresponding position in the corresponding storage medium according to the physical address. The invention further provides a corresponding data read-write device. By means of the data read-write method and device, the extra write expenditure can be reduced, the read-write efficiency can be improved, and the service life of the storage device can be prolonged.
Owner:HUAZHONG UNIV OF SCI & TECH

Method of color image display for a field sequential liquid crystal display device

A field sequential liquid crystal display device comprises a liquid crystal panel having an upper substrate, a lower substrate and a liquid crystal layer disposed therebetween, a back light disposed under the liquid crystal panel for irradiating a light to the liquid crystal panel and having 3 different light sources Red, Green and Blue sequentially driven; and an image signal processor controlling a lighting speed of each of the light sources Red, Green and Blue.
A method of color image display for a field sequential liquid crystal display device including an image signal processor, comprises steps of dividing a frame into four sub-frames having a period of one-fourth of one frame period, driving each of light sources Red, Green and Blue sequentially at a first, a second and a third sub-frame, driving a light source combination with three or fewer colors of Red, Green and Blue at a fourth sub-frame, classifying each component R, G and B of a color image input signal using a gray level having 256 levels, deciding a maximum luminance value of the field sequential liquid crystal display device using the gray level, obtaining an average luminance value of each of component R, G and B from the image input signal, turning on one of light sources Red, Green and Blue having an average luminance value greater than the maximum luminance value at the fourth sub-frame, and converting the input luminance value of component R, G and B and an input luminance value of the fourth sub-frame using the image signal processor.
Additionally, the method provides a time interval between driving sections of a previous light source and a next light source.
Owner:LG DISPLAY CO LTD
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