Asynchronous electrical circuitry techniques for producing stationary carrier signal to encode input signal amplitude into output signal time-sequence information
US9813077B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2015 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Jun 30, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/458
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Asynchronous electrical circuitry produces a stationary carrier signal and encodes a system input signal amplitude into output signal time-sequence information by establishing at a digitizer an operating point value as an average amplitude of the system input signal. It applies to the digitizer a multicomponent digitizer-input signal corresponding to a sum of a passband signal component and a feedback signal component to produce a pulse-width modulated digitizer output signal representing the system input signal. An asynchronous time delay is introduced to produce the pulse-width modulated system output signal. The circuitry performs digital-to-analog conversion (DAC) to the pulse-width modulated system output signal to produce a DAC output signal. The DAC output signal or its summation with the passband signal component is integrated to produce the feedback signal component. Additional, multiple-order embodiments include sequential feedback paths or carrier-shaping functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.