Pick function implementation in a parallel processing system
US5202671A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1991 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Oct 17, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04842
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processing system for identifying operator selection of a graphics object in a system using parallel pixel generation. Parallel pixel generation results in a fragment comprising a series of M pixels being generated at each processing cycle. The image fragment must be tested against an operator defined selection area to determine whether the object being generated falls within the operator selection area. Fragments are initially classified as totally within or totally outside of the area. If a fragment intersects the operator selection area, mask is applied for each boundary of the operator defined area. Selection is signalled based upon the logical combination of the masked image fragments. Operator selection or picking occurs without the overhead of maintaining a pick RAM for the X and Y dimensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.