Portable operating environment for information dev

专利名称：Portable operating environment for

information devices

发明人：Tim Wilkinson,Peter Mihlitz申请号：US09931576申请日：20010814

公开号：US20020070951A1公开日：20020613

专利附图：

摘要：A graphics rendering software program for use on an embedded computingdevice includes an application layer, a graphics toolkit, and a graphics driver for renderinga plurality of drawing surfaces, including a first drawing surface and a second drawing

surface, on a display of the embedded computing device. The graphics driver is

configured to render the first drawing surface at least partially overlapping the seconddrawing surface on the display. When the first drawing surface is rendered as partiallyoverlapping the second drawing surface, a visible portion of the second drawing surface iscomputed as a set of rectangular clip segments.

申请人：TRANSVIRTUAL TECHNOLOGIES, INC.

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