Data processing system having a pyramidal array of processors
Fractal generation, as for video graphic displays
Method and system for programmed control of computer generated graphics layout
Method of navigating among program menus using a graphical menu tree
Display control apparatus for use in composite document processing apparatus
Multi-level dynamic menu which suppresses display of items previously designated as non-selectable
Method and apparatus for selection of one from a plurality of entries listed on a computer display
Porthole window system for computer displays
Personal computer apparatus for block transfer of bit-mapped image data
ApplicationNo. 698016 filed on 05/09/1991
US Classes:345/668, By arbitrary ratio345/428, Adjusting level of detail345/472, Scaling382/301, Where the image is an alphanumeric character715/526Display processing
ExaminersPrimary: Herndon, Heather R.
Assistant: Feild, Joseph H.
International ClassG06F 015/62
AbstractA computer user interface that represents information stored in a computer as reprentation objects located on at least one reference surface is disclosed. A user can magnify or reduce the displayed information by "zooming" in or out. The magnification operation displays a smaller portion of a particular surface, but each object that remains in view is displayed in greater size and/or detail. Similarly, the reduction operation displays a larger portion of a given surface, but each object within such surface is displayed in a smaller size and/or less detail. In order to view one part of the surface from another part of the surface or from another surface, a special type of an object, called a representation portal object, is provided. A graphical description of each object is physically stored in computer memory essentially as a sequence of compressed image representations. The first image in the sequence is a bit-mapped representation of an object as it was created, and each subsequent image is a reduced copy of the first image.