| CPC H04N 19/1883 (2014.11) [G09G 3/2003 (2013.01); G09G 3/3225 (2013.01); G09G 5/006 (2013.01); H04N 19/186 (2014.11); G09G 2350/00 (2013.01)] | 10 Claims |
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1. A display apparatus comprising:
an encoder which compresses first image data to generate second image data;
a decoder which recovers the first image data based on the second image data from the encoder to generate third image data; and
a display panel which displays an image based on the third image data,
wherein the encoder separates the first image data into a plurality of sub-color data, and generates a low frequency component of minor sub-color data among the plurality of sub-color data and remaining sub-color data as the second image data,
the decoder generates recovery minor sub-color data corresponding to the minor sub-color data by using the low frequency component of the minor sub-color data and a high frequency component of one of the remaining sub-color data in the second image data and generates the recovery minor sub-color data and the remaining sub-color data as the third image data,
wherein the plurality of sub-color data includes first sub-color data, second sub-color data, and third sub-color data, and
the encoder extracts high frequency components and low frequency components of the first sub-color data, the second sub-color data, and the third sub-color data,
wherein the encoder calculates a distance between the high frequency components of each of the first sub-color data, the second sub-color data, and the third sub-color data, and
detects two sub-color data with closest distance between the high frequency components,
wherein the encoder configures the sub-color data with a short distance between the high frequency component and an origin of the two sub-color data as the minor sub-color data, and
configures the sub-color data with a long distance between the high frequency component and the origin of the two sub-color data as major sub-color data.
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