Offset detector circuit for differential signal generator, receiver, and method of compensating for offset of differential signal generator
US11888654B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 30, 2022 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Aug 30, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An offset detector circuit includes a digital signal register storing M unit digital signals received in latest M signal periods, M being a natural number, among digital signals generated based on a single-ended PAM-N signal, N being an odd number, a comparator outputting a comparison signal of a pair of signals included in differential signals generated from a differential signal generator based on the single-ended PAM-N signal, a comparison result register storing M unit comparison signals corresponding to the latest M signal periods among the comparison signals, a pattern detector outputting a detection signal when the M unit digital signals match a predetermined signal pattern, and an offset checker checking patterns of the M unit comparison signals in response to the detection signal, and outputting an offset detection signal when the patterns of the M unit comparison signals match a predetermined offset pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.