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US 7,197,234 B1Granted
System and method for processing subpicture data
AssigneeDigeo, Inc.
InventorGeoff Chatterton
Life of this patent
Estimating the term…
Abstract
A method is described for rendering subpicture images comprising: reading a subpicture image from a digital versatile disk (“DVD”); identifying regions within the subpicture image for which α is below a specified threshold value; and rendering on a video screen only those regions of the subpicture image for which α is above the specified threshold value.
Claims25
A method for rendering subpicture images comprising:
- reading a subpicture image from a digital versatile disk (“DVD”);
- identifying regions within said subpicture image for which a translucence level, α, is below a specified threshold value, wherein identifying further comprises locating, within a subpicture image buffer, an indication that α is below said specified threshold value, and an indication that said α value repeats until an end of a current line of said subpicture image;
- and
- rendering on a video screen only those regions of said subpicture image for which α is above said specified threshold value.
1 more element
A tangible computer readable medium, other than a carrier wave or other propagation medium, including computer program code which, when executed by a machine, causes said machine to perform the operations of:
- reading a subpicture image from a digital versatile disk (“DVD”);
- identifying regions within said subpicture image for which a translucence level, α, is below a specified threshold value, wherein identifying further comprises locating, within a subpicture image buffer, an indication that α is below said specified threshold value, and an indication that said α value repeats until an end of a current line of said subpicture image;
- and
- rendering on a video screen only those regions of said subpicture image for which α is above said specified threshold value.
1 more element
A system comprising:
- DVD reader means for reading a subpicture image from a digital versatile disk (“DVD”);
- image analysis means for identifying regions within said subpicture image for which a translucence level, α, is below a specified threshold value, wherein said image analysis means identifies said regions by locating, within a subpicture image buffer, an indication that α is below said specified threshold value, and an indication that said α value repeats until an end of a current line of said subpicture image;
- and
- image rendering means for rendering on a video screen only those regions of said subpicture image for which α is above said specified threshold value.
1 more element
Dependencies are inferred from the claim text.