Optimized fixed-point mathematical library and graphics functions for a software-implemented graphics rendering system and method using a normalized homogenous coordinate system
US7139005B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2003 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Dec 31, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/32
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A software-implemented graphics rendering system and method designed and optimized for embedded devices (such as mobile computing devices) using fixed-point operations including a variable-length fixed point representation for numbers and a normalized homogenous coordinates system for vector operations. The graphics rendering system and method includes a fixed-point mathematics library and graphics functions that includes optimized basic functions such as addition, subtraction, multiplication, division, all vertex operations, matrix operations, transform functions and lighting functions, and graphics functions. The mathematical library and graphics functions are modified and optimized by using a variable-length fixed-point representation and a normalized homogenous coordinate system (NHCS) for vector operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.