Dual usb port device

G - Physics – 06 – F

Patent

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G06F 13/38 (2006.01)

Patent

CA 2602627

Described is a system which includes a first device connected to a second device via a USB cable. The cable has a first USB connector and a second USB connector. The first device includes a first USB port, a second USB port and a voltage detector coupled to the second port. The detector detects a voltage at the second port. The first port is configured to accept the first connector and the second port is configured to accept the second connector. The second device includes at least one of a third USB port and a fourth USB port. The third port is configured to accept the first connector and the fourth port is configured to accept the second connector. The first device switches operation between a host state and a client state based on the detected voltage at the second port.

L'invention porte sur un système comprenant un premier dispositif raccordé à un second dispositif par un câble USB. Le câble comporte un premier connecteur USB et un second connecteur USB. Le premier dispositif comprend un premier port USB, un second port USB et un détecteur de tensions couplé au second port. Le détecteur détecte une tension au niveau du second port. Le premier port est configuré pour accepter le premier connecteur, et le second port est configuré pour accepter le second connecteur. Le second dispositif comprend au moins un troisième port USB et un quatrième port USB. Le troisième port est configuré pour accepter le premier connecteur, et le quatrième port est configuré pour accepter le second connecteur. Le premier dispositif effectue une opération de commutation entre un état hôte et un état client en fonction de la tension détectée au niveau du second port.

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