Device and method for detecting types of universal serial bus cable
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United States of America Patent
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Oct 31, 2017
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app pub date -
Mar 17, 2016
filing date -
Mar 18, 2015
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Abstract
A detection device for detecting types of a universal serial bus cable includes a detection circuit and a control unit. The detection circuit includes a signal source, a receiving end, a first resistor, a second resistor, a variable resistor, a first capacitor, a second capacitor, first through fourth switches, a VBUS end, an ID end, and a ground end. The signal source provides a detection signal. The control unit is electrically connected to the detection circuit, and is configured to control the first through the fourth switches according to a plurality of on-off states, to receive the detection signal and a VBUS signal from the receiving end in the plurality of on-off states, to generate a plurality of detection results, and to determine the type of the USB cable according to the plurality of detection results.
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