Patent ID: 11947484
Assignee: GENESYS LOGIC, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. A control method of a universal serial bus (USB) hub with a host bridge function suitable for connecting a first host device, a second host device, and a plurality of peripheral devices, the control method comprising steps of:
determining that whether power levels of the first upstream port and the second upstream port are greater than a predetermined level or not by a USB controller;
switching the first upstream port and the second upstream port to respectively connect the USB controller and a host bridge controller by a switch module according to the predetermined level;
receiving, by the host bridge controller, a first data from the first upstream port via the USB controller and the switch module and transmitting the first data to the second host device connected to the second upstream port, and receiving a second data from the second upstream port via the USB controller and the switch module and transmitting the second data to the first host device connected to the first upstream port; and
transmitting and receiving the first data and the second data to/from the peripheral devices by a plurality of first downstream ports.