US 12,620,140 B2 · Buffering a graphical overlay to be applied to an image

Abstract

A device and a method for buffering a graphical overlay to be applied to an image is disclosed. A graphical overlay description specifying content, size, and position in the image of a graphical element of the graphical overlay is obtained, and the graphical overlay is divided into a plurality of sequential line fragments. For each line fragment it is determined, using the graphical overlay description, whether the line fragment overlaps a part of the graphical element. On condition that the line fragment overlaps a part of the graphical element, information representing the part of the graphical element is buffered in a buffer memory for the line fragment. On condition that the line fragment does not overlap any part of the graphical element, a run-length coding representing identical pixels is buffered in the buffer memory for the line fragment.

Claims15

Dependent claims

A method for buffering a graphical overlay to be applied to an image, wherein the graphical overlay comprises a plurality of horizontal lines of pixels, the method comprising:

obtaining a graphical overlay description specifying content, size, and position in the image of a graphical element of the graphical overlay;
dividing each horizontal line of pixels of the plurality of horizontal lines of pixels of the graphical overlay into a plurality of sequential line fragments,
wherein all of the sequential line fragments have a same size;
and
for each line fragment of the plurality of sequential line fragments:
determining, using the graphical overlay description, whether the line fragment overlaps a part of the graphical element,
on condition that the line fragment overlaps a part of the graphical element, buffering in a buffer memory, for the line fragment, information representing the part of the graphical element, and
on condition that the line fragment does not overlap any part of the graphical element, buffering in the buffer memory, for the line fragment, a run-length coding representing identical pixels.

5 more elements

A device for buffering a graphical overlay to be applied to an image, the graphical overlay comprising a plurality of horizontal lines of pixels, the device comprising:

a buffer memory;
and
circuitry configured to execute:
an obtaining function configured to obtain a graphical overlay description specifying content, size, and position in the image of a graphical element of the graphical overlay;
a dividing function configured to divide each horizontal line of pixels of the plurality of horizontal lines of pixels of the graphical overlay into a plurality of sequential line fragments,
wherein all of the sequential line fragments have a same size;
a determining function configured to, for each line fragment of the plurality of sequential line fragments, determine, using the graphical overlay description, whether the line fragment overlaps a part of the graphical element;
and
a buffering function configured to, for each line fragment of the plurality of sequential line fragments:
on condition that the line fragment overlaps a part of the graphical element, buffer in the buffer memory, for the line fragment, information representing the part of the graphical element, and
on condition that the line fragment does not overlap any part of the graphical element, buffer in the buffer memory, for the line fragment, a run-length coding representing identical pixels.

8 more elements

Dependencies are inferred from the claim text.

Buffering a graphical overlay to be applied to an image

Life of this patent

Buffering a graphical overlay to be applied to an image

Life of this patent

Abstract

Claims15