USB interface working mode selection device and method and Android equipment
A USB interface and working mode technology, applied in the field of USB interface working mode selection devices, can solve the problem that the implementation method cannot be applied to application scenarios and the like
Active Publication Date: 2020-11-13
蘑菇车联信息科技有限公司
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Problems solved by technology
In some application scenarios, the user hopes to switch between the host mode and the slave mode through software, and the implementation methods in the prior art cannot be applied to these application scenarios
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[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0033] In this embodiment of the present invention, an Android device refers to a device installed with an Android operating system. In the application scenarios involved in the embodiments of the present invention, the Android device can work in the host mode or in the slave mode. For example, when the Android device works with the DP (Display P...
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The embodiment of the invention provides a USB interface working mode selection device and method and Android equipment. The device comprises a processor module, an MIPI-to-DP module and a power output control module. The processor module is connected with the MIPI-to-DP module and the power output control module. An output interface of the processor module is an MIPI-DSI interface; the MIPI-to-DPmodule is used for achieving mutual conversion of data between an MIPI interface and a DP interface and identifying the type of accessed external equipment; and the processor module determines a working mode according to the type of the external equipment identified by the MIPI-to-DP module, and controls the power supply output control module to supply power to the accessed external equipment according to the working mode. According to the embodiment of the invention, the selection of the host mode or the slave mode can be automatically realized according to the type of the accessed externalequipment on the premise that the SOC chip does not use the usb _ id hardware identification circuit.
Description
technical field [0001] The present invention relates to the technical field of equipment identification, in particular to a USB interface working mode selection device, method and Android equipment. Background technique [0002] A device based on a Linux operating system, such as an Android (Android) device, has two device modes when working as a USB (Universal Serial Bus, Universal Serial Bus) device, a host mode and a slave mode. [0003] In the host mode, the device based on the Linux operating system can actively establish a communication connection with the external device, such as an external USB storage device (such as a U disk), read files from the USB storage device, or an external camera with a USB interface , collect camera data, display the images captured by the camera in real time, and realize functions such as taking pictures, recording videos, and playing back. [0004] In the slave mode, the device based on the Linux operating system can only passively acce...
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IPC IPC(8): G06F13/10
CPCG06F13/102
Inventor 冀利刚朱磊邓志伟何建邦
Owner 蘑菇车联信息科技有限公司