Host-specified USB device requests
US6484219B1 · kind B1 · utility
33Cited by
8References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2000 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Feb 4, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/426
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A USB device is configured to support a non-USB-defined device request that is specific to an application program or operating system. The device request is supported by using a device-specific or vendor-specific request code, which is allowed to vary from device to device. To determine the proper request code, the host performs a GET_DESCRIPTOR device request, specifying a predetermined string descriptor. The requested string descriptor designates the request code to be used in the non-USB-defined device request.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.