USB interface extension through split transaction protocol
US7120724B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 2003 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Jan 19, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/0042
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication system for extending range of USB communications that may include a host computer system having a USB host controller, a USB hub, and transmitter circuitry. The USB host controller may be configured to operate using a split transaction for the USB communications. The communication system may also include receiver circuitry that receives a non-USB format of USB communication signals as the signals appear between split start and split complete transaction operations at the host computer system. The transmitter circuitry may be configured to forward the non-USB formatted USB communication signals across an extension between the transmitter circuitry and the receiver circuitry. At least one USB user interface device may be communicatively coupled to the receiver circuitry and receives USB communication signals from a receiver hub in the receiver circuitry. The USB communication signals correspond to the non-USB formatted communication signals that appear between the split start and split complete transaction operations at the host computer system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.