System and method for USB controllers
US7409476B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2006 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Feb 24, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/385
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A USB controller is provided with multiple logic channels that share same physical address and data bus at an interface between the host system and the USB Host Controller; and dataports used by the host system to read and/or write data to the USB Host Controller. Also provided is a data packet format for transferring data, which comprises of an Endpoint Transfer Descriptor (“ETD”) that includes an EndPoint Descriptor and a Transfer Descriptor, wherein the host system programs the parameters of a communication channel for a particular Endpoint. Also included is a technique for partitioning a memory storage device into a first memory buffer and a second memory buffer; wherein the size of the first and second memory buffer may be programmed by the host system and the first and/or second memory buffer may contain more than one USB packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.