Apparatus and method for handling universal serial bus control transfers
US6205501A · kind A · utility
56Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1998 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Jan 7, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/426
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for performing a control transfer on a Universal Serial Bus (USB) device. A USB device includes a memory space for reading and writing data transmitted over a USB network. The memory space is shared between a plurality of endpoints. A host initiates a control transfer by transmitting a SETUP token to a first endpoint. The endpoint must accept the SETUP token. If the first endpoint does not expect the SETUP token, or if another endpoint is active, the device stores the token until a buffer is allocated and the first endpoint is made active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.