Peak and valley signal measuring circuit using single digital-to-analog converter
US5555452A · kind A · utility
71Cited by
9References
20Claims
0Family size
Inventors
Key dates
| Filing date | May 12, 1995 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | May 12, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A peak and valley measuring circuit (40) featuring a single digital-to-analog converter (DAC) (100), a peak counter (110), a valley counter (120), and a comparator (130). The peak and valley measuring circuit (40) uses the peak counter (110) when detecting peaks of the recovered audio signal and the valley counter (120) when detecting valleys of the recovered audio signal. The DAC (100) is used in conjunction with one of the counters (110) or (120) depending on whether peaks or valleys are being detected, and is preferably a current-mode DAC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.