PERIPHERAL SHARING USB HUB - STANDARD MICROSYST SMC

Title:

PERIPHERAL SHARING USB HUB

Document Type and Number:

WIPO Patent Application WO2006108174

Kind Code:

A3

Abstract:

In various embodiments, devices coupled to upstream ports may enumerate the USB switching hub according to the total number of downstream ports on the USB switching hub. In some embodiments, when a first upstream port is communicating with a first downstream port, status registers coupled to the second upstream port may indicate to the second upstream device that the first downstream port is disconnected. By enumerating the USB switching hub according to the total number of downstream ports, the upstream devices may not have to re-enumerate the hub (and correspondingly each device coupled to the hub) each time a downstream device is switched. In some embodiments, an intelligent port routing switch may delay switching communications for the downstream port if there is an active transfer in progress between a related downstream port and an upstream port.

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Inventors:

BOHM MARK R (US)
FU MARK (US)
WURZBURG HENRY (US)
BOWLES JAMES E (US)
HOLLINGSWORTH ROBERT E (US)
DUTTON DREW J (US)

Application Number:

PCT/US2006/013299

Publication Date:

November 30, 2006

Filing Date:

April 06, 2006

Export Citation:

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Assignee:

STANDARD MICROSYST SMC (US)
BOHM MARK R (US)
FU MARK (US)
WURZBURG HENRY (US)
BOWLES JAMES E (US)
HOLLINGSWORTH ROBERT E (US)
DUTTON DREW J (US)

International Classes:

G06F13/40

Foreign References:

US20010032280A1	2001-10-18
GB2352540A	2001-01-31
US20040019732A1	2004-01-29

Other References:

INTERNATIONAL BUSINESS MACHINES CORPORATION: "Programmable multi-host device sharing USB hub", RESEARCH DISCLOSURE, MASON PUBLICATIONS, HAMPSHIRE, GB, vol. 418, no. 92, February 1999 (1999-02-01), XP007123968, ISSN: 0374-4353

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