Data processing system with reduced look-up table for a function with non-uniform resolution
US5895500A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1997 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | May 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/035
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system with a look-up table means for implementing a transfer function with non-uniform resolution comprises a memory to store a plurality of function data; an input to receive external address words for operating on the memory; and an output to provide the function data. The look-up table means comprises a converging means between the input and the memory for mapping specific ones of the external address words onto a specific one of internal address words to access the memory. This greatly reduces memory size. If the transfer function has a symmetry property, a symmetry-handling means further reduces the memory size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.