US 2019/0156457 A1 · DEVICE AND METHOD FOR IMAGE ENLARGEMENT AND DISPLAY PANEL DRIVER USING THE SAME

Abstract

A display panel driver includes a scaler circuit performing image enlargement processing on input image data corresponding to an input image to generate α-times enlarged image data corresponding to an α-times enlarged image (αis a number larger than one which cannot be represented as 2k); and a driver section driving a display panel. In calculating a pixel value of a target pixel of the α-times enlarged image, the scaler circuit generates enlarged image data including 2n-times enlarged image data corresponding to a 2n-times enlarged image obtained by enlarging the input image with an enlargement factor of 2n (n is the smallest integer determined so that 2n is larger than α), and calculates the pixel value of the target pixel from the 2n-times enlarged image data through interpolation processing of pixel values of pixels of the 2n-times enlarged image corresponding to the target pixel of the α-times enlarged image.

Claims20

Dependent claims

A display driver, comprising:

a scaler circuit configured to enlarge an input image with an enlargement by:
generating an intermediate pixel image composed of intermediate pixels, wherein each of the intermediate pixel corresponds to a different 2×2 pixel array of the input image;
generating an interpolated image comprising interpolation pixels, wherein each of the interpolation pixels corresponds to at least one of a combination of two adjacent pixels of the input image in a horizontal direction, and a combination of two adjacent pixels of the input image in a vertical direction;
and
incorporating the input image, the intermediate pixel image, and the interpolated pixel image into an enlarged image;
and
a driver section configured to drive a display panel at least partially based on the enlarged image.

4 more elements

A display device comprising:

a display panel;
and
a display driver comprising:
a scaler circuit configured to enlarge an input image with an enlargement by:
generating an intermediate pixel image composed of intermediate pixels, wherein each of the intermediate pixels corresponds to a different 2×2 pixel array of the input image;
generating an interpolated image comprising interpolation pixels, wherein each of the interpolation pixels corresponds to at least one of a combination of two adjacent pixels of the input image in a horizontal direction, and a combination of two adjacent pixels of the input image in a vertical direction;
and
incorporating the input image, the intermediate pixel image, and the interpolated pixel image into an enlarged image;
and
a driver section configured to drive a display panel at least partially based on the enlarged image.

7 more elements

Dependencies are inferred from the claim text.

Device and method for image enlargement and display panel driver using the same

Life of this patent

Device and method for image enlargement and display panel driver using the same

Life of this patent

Abstract

Claims20