Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1996-11-25
1998-03-24
Herndon, Heather R.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345433, G06T 940
Patent
active
057318158
ABSTRACT:
A reproduction structure in a computer is based on a hierarchical structure of consistency relations between objects. As a function of one or more objects of a given hierarchical level, each relation specifies one or more incremental objects at a next-higher level. Variable incremental objects are situated at the lowest level. After a user interaction, modifying one or more variable incremental objects, the consistency is restored as follows. First a set of value inconsistencies is signaled for the incremental objects during a bottom-up signaling step. Subsequently, on the basis of each element of said set during a top-down updating step the value of the hierarchically higher object is updated on the basis of a change of value, if any, of associated, specifying variable incremental objects and/or incremental objects.
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Barschall Anne E.
Herndon Heather R.
Hong Stephen
U.S. Philips Corporation
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