Codec circuit for POTS system
US8787559B2 · kind B2 · utility
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39Claims
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Key dates
| Filing date | Feb 28, 2012 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Feb 19, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2007/126
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A CODEC circuit for POTS system comprises a digital circuit for outputting a digital control signal having a first bit width, the digital control signal being indicative of a voltage to be applied to a POTS subscriber line pair. Further, the CODEC comprises a noise shaper coupled to an output of the digital circuit for generating a noise-shaped control signal and a digital-to-analog converter coupled to an output of the noise shaper, the input of the digital-to-analog converter having a second bit width being larger than 1 and smaller than the first bit width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.