Method for detecting data transmission rate of USB controller by using USB device
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United States of America Patent
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Feb 6, 2007
Grant Date -
Dec 4, 2003
app pub date -
Oct 4, 2002
filing date -
May 29, 2002
priority date (Note) -
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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.
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