Buffer management for wireless USB isochronous in endpoints
US7865636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2008 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Nov 27, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/426
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus such as a Device Wire Adapter (DWA) with improved buffer management and packaging of Wireless Universal Serial Bus (WUSB) isochronous packets for transmission to a host. The apparatus includes an isochronous IN endpoint that receives data segments from a device function. Memory is associated with the endpoint and includes an endpoint buffer configured in a loop and a plurality of registers. The apparatus includes an endpoint controller that stores the received data segments sequentially in the loop buffer, assigns a set of the registers to each of the stored data segments, and stores additional packet information in the registers for each of the data segments rather than in the endpoint buffer. The additional packet information includes presentation time for the stored data segment derived from a sample time of a last segment in the buffer and a time interval between two consecutive data segments in the buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.