Method for detecting data transmission rate of USB...

Details Method for detecting data transmission rate of USB... Method for detecting data transmission rate of USB...

2007-02-06

2007-02-06

Burd, Kevin (Department: 2611)

Pulse or digital communications

Testing

Data rate

C710S305000

Reexamination Certificate

active

10263751

ABSTRACT:
A method is provided for detecting the data transmission rate of a USB controller by using a USB device having at least one program storage device. An IRQ signal of a timer is activated through a program. If the USB controller transmits a signal corresponding to a high-speed USB controller within a pre-determined period of time, the data transmission rate is set to a high-speed mode. If the signal is not detected, data transmission is set to a full-speed mode.

REFERENCES:
patent: 5012223 (1991-04-01), Griebell et al.
patent: 6862258 (2005-03-01), Kitagawa
patent: 6938103 (2005-08-01), Azzarito et al.
patent: 2003/0163627 (2003-08-01), Deng et al.

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