Signal processor with analog residue
US7812755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2008 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Dec 7, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06J1/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one or more embodiments, an apparatus and method for processing an analog signal into a digital signal includes a quantizer that converts the analog signal, which can have any value within a given range of values, into a fixed set of discrete values. An analog residue, i.e. the quantization error caused by the difference between the analog value of the integrated analog signal and the closest corresponding discrete quantized value, is outputted. The analog residue can be further processed to increase the accuracy of the A/D conversion. Multiple quantizer stages can be provided to perform A/D conversion of the analog signal over multiple integration periods, e.g. in multi-shot and time-delay integration applications. The analog signal may represent an image signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.