Digital waveform generator apparatus and method therefor
US6239636A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2000 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | May 12, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/0008
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A waveform generator for generating a waveform in a dual mode wireless device includes a first waveform generator portion (106) and a second waveform generator portion (108). The first waveform generator portion includes a first register (86) connected in series with a second register (84) and a first feedback selector (88), and the second waveform generator portion includes a third register (102) connected in series with a fourth register (100) and a second feedback selector (104). The first register and the third register, and the second register and the fourth register are set up as accumulators, and a new output data value of the first and third register is obtained by adding a corresponding previous data value of the first register and the third register, respectively, and a corresponding previous data value of the second register and the fourth register, respectively, and a new data output value of the second and fourth register is obtained by adding a corresponding previous data value of the second register and the fourth register, respectively, and a scaled previous output data value of the first and third registers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.