Circuit and method for switching between ternary modulation and quaternary modulation
US11489499B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2021 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Aug 9, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/351
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switch circuit provides a first output signal and a second output signal for switching between ternary modulation and quaternary modulation for a target device. A first output signal is provided from one of a first signal, a second signal and a ground signal according to an input signal and a duty signal, wherein the first signal is generated through performing a one-bit left-shift operation for the input signal, and the second signal is generated through adding the input signal and the duty signal. A second output signal is provided from one of a third signal, a fourth signal and the ground signal according to the input signal and the duty signal, wherein the third signal is generated through subtracting the input signal from the duty signal, and the fourth signal is generated through performing a two's-complement transformation and the one-bit left-shift operation for the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.