Apparatus and method for handling special windows in a display

Details Apparatus and method for handling special windows in a display Apparatus and method for handling special windows in a display

2008-08-12

2010-11-30

Lo, Weilun (Department: 2179)

Data processing: presentation processing of document, operator i

Operator interface

On screen video or audio system interface

C715S720000, C715S721000, C715S722000, C715S726000, C382S100000, C382S232000

Reexamination Certificate

active

07844902

ABSTRACT:
An apparatus and method for handling special windows in a display comprises a window manager in an operating system that is called by application programs to create special windows. The window manager embeds static key signals including encoded special window information, such as the coordinates of a window area to be specially processed, into a video RAM. An existing video interface scans the video RAM and transmits display information, including the key signals, to the display. The present invention further comprises a window decoder in the display, that detects the key signals, extracts the encoded special window information, and controls display circuitry performing the desired special processing. The key signal encoding scheme does not create visually discernible display aberrations that could distract the user or interfere with normal window management.

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