A method and apparatus for generating a font of which style is changeable are disclosed. The disclosed method is a method for generating a font to be performed on an apparatus including a processor. The method comprises (a) setting a fixed style parameter which cannot change the style, wherein the fixed style parameter is included in style parameters, and a METAFONT consists of the style parameter and a letter drawing function, (b) generating an intermediate code based on the letter drawing function and the fixed style parameter; and (c) generating an output font by combining the intermediate code with a variable style parameter which can change the style, wherein the variable style parameter is included in the style parameter.

This disclosure is directed toward systems and methods of pre-multiplied alpha handling during image processing operations. The image processing circuitry may include hardware that enables removal and insertion of pre-multiplied alpha content into red, green, blue (RGB) pixel values during gamma and scaling operations. The division by alpha and multiplication by alpha hardware may enable removal of pre-multiplied alpha content to RGB pixel values prior to gamma operations and insertion of pre-multiplied alpha content into RGB pixel values prior to scaling operations.

This disclosure is directed toward systems and methods of pre-multiplied alpha handling during image processing operations. The image processing circuitry may include hardware that enables removal and insertion of pre-multiplied alpha content into red, green, blue (RGB) pixel values during gamma and scaling operations. The division by alpha and multiplication by alpha hardware may enable removal of pre-multiplied alpha content to RGB pixel values prior to gamma operations and insertion of pre-multiplied alpha content into RGB pixel values prior to scaling operations.

A color display device for displaying an n-primary color image, wherein n is greater than three, the device including an array of sub-pixel (801) configured to have at least one repeating unit having one sub-pixel representing each of the n primary colors, wherein repeating unit (906) is configured to optimize at least one attribute of the n-primary color image.

A color display device for displaying an n-primary color image, wherein n is greater than three, the device including an array of sub-pixel (801) configured to have at least one repeating unit having one sub-pixel representing each of the n primary colors, wherein repeating unit (906) is configured to optimize at least one attribute of the n-primary color image.

Methods are described for sequentially rendering fonts at multiple bit depths while reducing differences in visual appearance between the fonts rendered at different bit depths. The same hinting may be used for rendering the font at two different bit depths. Methods for reducing artifacts including edge artifacts also are described, including the use of font masks for updating electro-optic displays.

Methods are described for sequentially rendering fonts at multiple bit depths while reducing differences in visual appearance between the fonts rendered at different bit depths. The same hinting may be used for rendering the font at two different bit depths. Methods for reducing artifacts including edge artifacts also are described, including the use of font masks for updating electro-optic displays.

A character attribute determination section 1 determines a attribute of a character on the basis of a character attribute database 2. A blur intensity decision section 5 acquires a blur intensity for each character attribute on the basis of legibility control knowledge 3, and decides the blur intensity for the target character corresponding to the character attribute determined by the character attribute determination section 1. A blurring process execution section 6 performs a blurring process to the character with the blur intensity decided by the blur intensity decision section 5.

A character attribute determination section 1 determines a attribute of a character on the basis of a character attribute database 2. A blur intensity decision section 5 acquires a blur intensity for each character attribute on the basis of legibility control knowledge 3, and decides the blur intensity for the target character corresponding to the character attribute determined by the character attribute determination section 1. A blurring process execution section 6 performs a blurring process to the character with the blur intensity decided by the blur intensity decision section 5.

A display apparatus and a method for providing a font effect thereof are provided. The method includes obtaining character information and font information of a character; determining an attribute value of a font effect according to at least one of characteristics of the character and characteristics of the display apparatus; rendering the font effect based on the determined attribute value and applying the rendered font effect to the character; and outputting the character to which the font effect is applied.