Electrical computers and digital data processing systems: input/ – Input/output data processing – Peripheral configuration
Reexamination Certificate
2006-06-27
2006-06-27
Park, Ilwoo (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Peripheral configuration
C710S010000, C710S014000, C710S062000, C710S072000, C713S001000, C713S100000
Reexamination Certificate
active
07069347
ABSTRACT:
Disclosed herein is a device and method for adapting an operating speed of a USB peripheral device coupled with a host. In one example, the peripheral device is initially operated at a first operating speed associated with a first power consumption level, and it is determined whether the host will support the peripheral device operating at a second, higher power consumption level. If so, the peripheral device is reconfigured to operate at a second operating speed associated with the second power consumption level. In one example, the peripheral device may be initially operated at an operating speed of approximately 12 Mbps (i.e., full speed USB) so that the peripheral device draws no more than approximately 100 mA of current. In this example, the peripheral device may report a high power descriptor set including a 100 to 500 mA descriptor, and if the host selects the descriptor set, then the peripheral device is can reconfigure itself to operate with an operating speed of approximately 480 Mbps (i.e., high speed USB) so that the peripheral device draws approximately 100 to 500 mA of current. In this manner, the peripheral device can selectively operate in high speed USB mode if the host (or hub) can provide the current needed by the peripheral device to operate at the faster data rates of the high speed USB mode. If not, the peripheral device operates in the full speed USB mode.
REFERENCES:
patent: 5675813 (1997-10-01), Holmdahl
patent: 5974486 (1999-10-01), Siddappa
patent: 5987617 (1999-11-01), Hu et al.
patent: 6012103 (2000-01-01), Sartore et al.
patent: 6178514 (2001-01-01), Wood
patent: 6611552 (2003-08-01), Beck
patent: 6665801 (2003-12-01), Weiss
patent: 6665810 (2003-12-01), Sakai
patent: 6738834 (2004-05-01), Williams et al.
patent: 6839778 (2005-01-01), Sartore et al.
patent: 2002/0162035 (2002-10-01), Tsukihashi
patent: 2002/0162036 (2002-10-01), Kim et al.
patent: 2003/0054703 (2003-03-01), Fischer et al.
patent: 2003/0110403 (2003-06-01), Crutchfield et al.
patent: 2004/0221180 (2004-11-01), Enami et al.
patent: 2002-202856 (2002-07-01), None
New Release, Intel Corporation, “Intel Releases USB 2.0 Enhanced Host Controller Interface 1.0 Specification, EHCI Compliance-Testing Program”, Intel Developer Forum, Tokyo, Apr. 17, 2002, 2 pages.
Cypress Semiconductor Corporation
Park Ilwoo
LandOfFree
Device and method for adapting speed of a USB device based... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device and method for adapting speed of a USB device based..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for adapting speed of a USB device based... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3639040