Digital-phase to digital amplitude translator with first bit off priority coded output for input to unit weighed digital to analog converter
US6674380B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Apr 29, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/0353
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Differential heating is avoided by a digital to analog converter for generating analog cyclical waveforms having a period. The cyclical waveforms are generated by conversion of a sequence of step wise linearly incrementing digital phase words presented during the period for conversion. The digital to analog converter has a clock for operating conversion timing within the digital to analog converter. The clock generates a clock pulse for conversion of each of the digital phase words by said digital to analog converter while generating the cyclical waveform.A lookup read only memory for converting each of the incrementing digital phase words within the period into a plurality of ON commands to be used by a plurality of current sources. The plurality of ON commands are timed to generate the cyclical waveforms and have nearly equal time duration approximating a 50 percent duty cycle.The cyclical waveform has one or more non-linear portions reflected in the content of the read only memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.