Applet and application display in embedded systems using bufferless child graphics contexts
Patent №
US 6,380,955
Granted
2002-04-30
Filed 2000
Owner
SUN MICROSYSTEMS, INC.
Lab
—
AI components
1
hardware
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
09595600
A method and apparatus implementing a separate child context for each applet (or similar element) of a browser. A described embodiment of the present invention provides one or more child contexts that correspond to elements in the HTML for a web page displayed by a browser. For example, each applet executed by the browser has a corresponding and separate child context that points to an associated portion of a browser memory. The browser also has a parent context, which each child context points to. When a graphic is displayed via a widget, the widget draws the graphic (such as a panel or a non-pressed button) in the child context of the applet and sets a “damage” flag in the child context. When the browser performs its main browser loop, it checks the status of the damaged flag for each element (including each applet). If the browser finds a damage flag that is set, this means that something was written into the portion of the browser memory corresponding to the child context and that the parent buffer needs updating. In this case, the browser “pulls” the information from the portion of browser memory corresponding to the child context into the parent buffer, which is then used to update the display screen.
AI classification
Ownership
SUN MICROSYSTEMS, INC.
assignment · 108800689
Assignors
KANUNGO, RAJESH, NARAYANAN, VENKATESH
On an employer assignment, the assignors are typically the inventors.