Quantizer
US10861433B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2019 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | May 9, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/1081
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A quantizer and a method for a sigma-delta modulator circuit that may be used as a component within an adaptive-noise cancelling headphone are presented. An apparatus includes a quantizer to receive an input signal with successive input values and quantizes the input signal at discrete intervals. This is done by mapping the input value of the input signal at each interval to one of a plurality of quantization levels with three or more quantization levels that are non-uniformly spaced. The plurality of quantization levels has a first portion with two or more quantization levels having the same sign and being proportional to a first fraction having one as its numerator and two to a power of a first variable as its denominator, the first variable being an integer and having a different value for each of the two or more quantization levels of the first portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.