Browse Prior Art Database

Reflective Graphical Method for Viewing a Large Virtual Screen

IP.com Disclosure Number: IPCOM000109619D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 1 page(s) / 53K

Publishing Venue

IBM

Related People

Honda, R: AUTHOR

Abstract

Disclosed is a method for viewing a virtual screen that is larger than the physical display. The key idea is to show a bird's-eye view of the entire virtual screen at a reduced scale in the neighborhood of a particular part at the original scale, on the same physical display. The behavior of the bird's-eye view reflects that of the original screen and vice versa. This gives a smooth graphical user interface for applications such as displaying a large virtual screen on a small display.

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Reflective Graphical Method for Viewing a Large Virtual Screen

       Disclosed is a method for viewing a virtual screen that
is larger than the physical display.  The key idea is to show a
bird's-eye view of the entire virtual screen at a reduced scale in
the neighborhood of a particular part at the original scale, on the
same physical display.  The behavior of the bird's-eye view reflects
that of the original screen and vice versa.  This gives a smooth
graphical user interface for applications such as displaying a large
virtual screen on a small display.

      An example of a virtual screen and its bird's-eye view are
shown in the figure.  A reduced image of the entire virtual screen is
mapped onto the display in a rectangle with the same proportions and
includes the current display shown at a reduced scale.  Moving the
reduced drawing display in the reduced drawing virtual screen causes
the display to move in the virtual screen; that is, the contents of
the display move to another part of the virtual screen.  This means
that the user can scroll the contents of the screen by dragging the
reduced drawing display.

      Since this method makes it possible to view both the entire
display and a particular movable portion simultaneously at two
scales, it gives a small display a capability similar to that of a
large one.  In addition, a minimized display within the display can
function as an intermediate screen by nesting the virtual screen.
Such nested sc...