USB device and peripheral device changing functional module...

Details USB device and peripheral device changing functional module... USB device and peripheral device changing functional module...

2007-12-11

2010-10-19

Kindred, Alford W (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral monitoring

C379S032010, C379S112040, C713S001000, C713S002000, C713S100000, C714S047300, C710S016000

Reexamination Certificate

active

07818469

ABSTRACT:
In a USB device comprising a plurality of functional modules that includes a control circuit for switching a functional module to be activated from among the functional modules included in the USB device according to a potential level of a power applied from a host connected to the USB device. The control circuit includes: a voltage detector for discriminating a voltage value of power; a switch for controlling powers to be applied to the respective functional modules; and memories for storing descriptors relating to the USB device. The control circuit makes power applied to a functional module to be activated by the switch into ON state according to a discrimination result of the voltage value of the power by the voltage detector, thereby transferring the descriptors stored in the memories to a host.

REFERENCES:
patent: 7293187 (2007-11-01), Ono et al.
patent: 2005/0050371 (2005-03-01), Ono
patent: 2004-86359 (2004-03-01), None
patent: 2004-341699 (2004-12-01), None
patent: 2005-71274 (2005-03-01), None
Universal Serial Bus Specification, Revision 2.0, Apr. 27, 2000, Compaq, Hewlett-Packard, Intel, Lucent, Microsoft, NEC, Philips.

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