Digital signal processor
US7982663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2009 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Nov 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/0254
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The digital signal processor is for correcting a DC output at an output terminal of an internal circuit of an analog circuit device. The digital signal processor includes a digital register for storing a digital value, a D/A converter for converting the digital value stored in the digital register into an analog voltage and applying the converted analog voltage to the output terminal as the DC output, a polarity determining circuit which outputs a first signal when an analog DC voltage at a reference correction point different from the output terminal in the internal circuit is higher than a predetermined threshold value and otherwise outputs a second signal, and an updating function configured to monotonously increase or decrease the digital value stored in the digital register while a predetermined one of the first and second signals is outputted from the polarity determining circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.