US 8,553,044 B2Granted

Graphic rendering system and pixel update method thereof

AssigneeInstitute for Information Industry

InventorsChia-Ming Chang, Yi-Ting Lin

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Abstract

A graphic rendering apparatus includes a processing unit and a storage unit. The storage unit is stored with a piece of information. The piece of information defines a virtual area on a display. A pixel of the display overlaps a part of the virtual area, and the part corresponds to a color. The pixel defines a first boundary, a second boundary, a third boundary, and a fourth boundary. The processing unit decides a first coverage rate, a second coverage rate, a third coverage rate, and a fourth coverage rate of the virtual area on the first boundary, the second boundary, the third boundary, and the fourth boundary, respectively. The processing unit decides a display color of the pixel with reference to the color and the first coverage rate, the second coverage rate, the third coverage rate, and the fourth coverage rate.

Claims20

Dependent claims

A graphic rendering system, comprising:

a storage unit, being configured to store a piece of first information, wherein the piece of first information defines a first virtual area in a display frame;
and
a processing unit, being configured to determine that a pixel in the display frame overlaps a part of the first virtual area according to the piece of first information, wherein the part corresponds to a first color, the pixel defines a first boundary, a second boundary, a third boundary, and a fourth boundary, the processing unit is further configured to decide a first coverage rate of the first virtual area on the first boundary, a second coverage rate of the first virtual area on the second boundary, a third coverage rate of the first virtual area on the third boundary, and a fourth coverage rate of the first virtual area on the fourth boundary, and the processing unit is further configured to decide a display color of the pixel with reference to the first color, the first coverage rate, the second coverage rate, the third coverage rate, and the fourth coverage rate.

A pixel update method for a graphic rendering system, wherein the graphic rendering system comprises a processing unit and a storage unit, the storage unit has a piece of first information stored therein, and the piece of first information defines a first virtual area in a display frame, the pixel update method comprising the following steps of:

(a) determining, by the processing unit, that a pixel in the display frame overlaps a part of the first virtual area according to the piece of first information, wherein the part of the first virtual area corresponds to a first color, and the pixel defines a first boundary, a second boundary, a third boundary, and a fourth boundary;
(b) deciding, by the processing unit, a first coverage rate of the first virtual area on the first boundary;
(c) deciding, by the processing unit, a second coverage rate of the first virtual area on the second boundary;
(d) deciding, by the processing unit, a third coverage rate of the first virtual area on the third boundary;
(e) deciding, by the processing unit, a fourth coverage rate of the first virtual area on the fourth boundary;
and
(f) deciding, by the processing unit, a display color of the pixel with reference to the first color, the first coverage rate, the second coverage rate, the third coverage rate, and the fourth coverage rate.

4 more elements

Dependencies are inferred from the claim text.