Circuits and methods for generating an accurate digital representation of a sinusoidal wave
US6518802B1 · kind B1 · utility
5Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2001 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Jun 27, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B28/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A numerically controlled oscillator that generates an accurate digital representation of a repeating waveform such as a sinusoidal wave. Based on the desired output frequency, multiple samples are calculated from multiple cycles of the repeating waveform. As samples are taken, they are stored in a memory location until a sufficient number of samples are accumulated. After the samples are accumulated, they are output in a specified order, which generates an accurate digital representation of a sinusoidal wave at the desired output frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.