Rejection of end-of-packet dribble in high speed universal serial bus repeaters
US11563462B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2021 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Jul 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45491
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Universal Serial Bus (USB) repeater circuits and methods of operating the same for communicating data signals from a first pair of data terminals to a second pair of data terminals of the repeater. In a first channel, an amplifier stage in a receiver amplifies a differential signal received at the first pair of data terminals to generate a differential signal at first and second output nodes of the receiver, and a transmitting circuit transmits a differential signal at the second pair of data terminals responsive to the differential signal at the first and second output nodes of the receiver. The receiver includes a hysteresis stage that receives an offset in opposition to the differential signal at the first and second output nodes of the receiver. End-of-packet (EOP) dribble in USB communications in the HS mode is reduced by the offset at the hysteresis stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.