Method and apparatus for redrawing transparent windows

Details Method and apparatus for redrawing transparent windows Method and apparatus for redrawing transparent windows

1996-04-30

1998-11-03

Burwell, Joseph R.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

G06F 314

Patent

active

058316159

ABSTRACT:
A method and apparatus for re-drawing a transparent window on at least one display device of a computer based system having a central processor and a memory is disclosed. Having a transparent window and an underlying second window, it is determined whether the underlying second window is active. If the underlying second window is active, the transparent window is hidden. The underlying second window is re-drawn and the transparent window is shown. Otherwise, the transparent window is maintained.

REFERENCES:
patent: 5204947 (1993-04-01), Bernstein et al.
Edmondson, WideAngle 2.0, The Compu Think Windows Watcher, v. 2, N. 1, p. 13(1), Nov. 1991.
Transparent Window Selection, IBM Technical Disclosure Bulletin, v. 30, N. 11, pp. 268-271, Apr. 1988.
Ishii et al., ClearFace: Translucent Mutiuser Interface for TeamWorkStation, Proc. of 2nd Euro. Conf. on Computer-Supported Cooperative Work (ECSCW '91), pp. 163-174, Sep. 9, 1991.
Ishii et al., "Toward an Open Shared Workspace: Computer and Video Fusion Approach ofTeamWorkStation", Comm. of ACM, v. 34, n. 12, pp. 37-50, Dec. 1991.

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