Controller, electronic equipment unit, and USB device control method

摘要

A controller for communicating with a USB (universal serial bus) device via a USB is disclosed. The controller includes a registering unit which associates topology information of a USB hub to which the USB device is connected via the USB and a special control scheme for performing a special control of the USB device which is connected to the USB hub to register the associated result; a processing unit which specifies the special control scheme corresponding to the topology information of the USB hub to which the USB device is connected based on the registered information; and the USB hub which executes control of the USB device connected to the USB hub based on the special control scheme specified by the processing unit.

主权项

1. A controller configured to communicate with a USB (universal serial bus) device via a selected one of a plurality of USB ports, the controller comprising:
one or more USB hubs configured to connect the controller to the USB devices via the selected USB port; a registering unit configured to register information that uniquely identifies the selected USB port with a control scheme that controls device initialization of the USB device; and a processing unit configured to,
specify the control scheme corresponding to the selected port based on the registered information, andexecute the device initialization of the USB device connected to the USB hub based on the control scheme on a port-by-port basis such that each of the plurality of USB ports of the USB hub is individually assigned a time frame to initially recognize the USB device connected thereto allowing different ones of the plurality of USB ports to have different time frames assigned thereto, the time frame being of a value other than a default value including a delay compliant with a USB standard.