Method and device for controlling USB channel switching

Abstract

The invention discloses a method for controlling USB channel switching. The method comprises the following steps: 1, monitoring the access condition of main equipment of a USB switcher; 2, when it ismonitored that there is a newly accessed master device on the USB switcher, judging whether there is an earlier accessed master device on the USB switcher, and if there is an earlier accessed master device on the USB switcher, executing the step 3; 3, judging whether the master device which is accessed earlier uses each slave device or not, and if not, executing the step 4; 4, sending a switchinginstruction to the USB switcher to enable the USB switcher to switch and connect each slave device to a newly accessed master device. According to the method, the problem of wrong switching when the next speaker accesses the next main device in advance to save time during switching according to a first-in-first-out strategy after use can be avoided. The invention discloses a device for controllingUSB channel switching.

Description

technical field [0001] The invention relates to USB technology, in particular to a method and device for controlling USB signal switching. Background technique [0002] At present, many video USB switches on the market are integrated with USB switches at the same time, so that the participants can easily use the microphones, cameras and other slave devices in the conference room. These slave devices can only be connected to one computer at a time. When there are multiple When all computers are connected to the USB switcher, there needs to be a mechanism to decide which computer to switch the USB signal to. [0003] At present, there are mainly two ways to switch USB signals: one is manual switching, and the USB signal is switched through the control interface provided by the USB switcher; the other is automatic switching, which is first come first served (switching the USB signal computer connected first) or last-come-first-served (switch the USB signal to the computer conn...

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Problems solved by technology

[0004] For the former method, it is obviously inconvenient to use manual operation; but for the latter method, it is not flexible enough. Under the first-come-first-served policy, the computers connected later are often the main or even the only computers used by users. , it is natural to hope that the USB signal can be automatically switched over, and if there are other computers connected earlier, the USB signal will not be switched to this computer. The last-come-first-served strategy can avoid the defects of the first-come-first-served strategy, but still Unable to deal with some common complex scenarios, for example: in a meeting scene, the next speaker may wish to connect the computer to the USB switch in advance to improve the efficiency of the meeting, which will cause the previous computer to switch automatically before the USB signal is used up to the next computer

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