Function generator
US4482975A · kind A · utility
32Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Mar 29, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/5356
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for generating an output digital signal that approximates the value of a predetermined mathematical function lying in the X-Y plane at a point defined by an input digital signal. The mathematical function is approximated by a plurality of linear least-mean-square line segments each of which includes a central point, R, and a slope, S, with the desired point being defined by the equation F(X) approximates R+S.DELTA.X, where .DELTA.X is the X distance between the central point R and the desired point. R, S and .DELTA.X are precalculated and stored in PROM lookup tables and combined as stated in the above equation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.