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Method for starting Android system from OTG (On-The-Go) equipment

A device and system partition technology, applied in the field of communication, can solve the problem of OTG device processing method not working

Inactive Publication Date: 2015-03-11
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, to start the Android system from an OTG device, the traditional OTG device processing method is not feasible

Method used

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  • Method for starting Android system from OTG (On-The-Go) equipment
  • Method for starting Android system from OTG (On-The-Go) equipment
  • Method for starting Android system from OTG (On-The-Go) equipment

Examples

Experimental program
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Embodiment

[0040] This embodiment uses a Nexus 5 mobile phone as an implementation platform, and the OTG device is a card reader with a mini usb port inserted into an 8G Micro SD Card. When the SD card is inserted into the card reader with mini usb port, and the card reader is inserted into the mini usb port of the mobile phone, the mobile phone will use this external device as an OTG device. The concrete steps of embodiment are as follows:

[0041] A. Extract and modify the phone boot partition image

[0042]1. Extract the Nexus 5 boot partition image

[0043] The boot partition (named boot partition) of the Nexus 5 mobile phone is / dev / block / mmcblk0p19 (use the adb tool to enter the mobile phone / dev / block / platform / msm_sdcc.1 / by-name directory to check the Nexus 5 partition situation, such as Figure 4 As shown, the content marked in the upper box in the figure indicates that the boot partition of Nexus 5 is mmcblk0p19), extract the boot partition (boot partition) data, and save it a...

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Abstract

The invention relates to a method for starting an Android system from OTG (On-The-Go) equipment and belongs to the technical field of communication. According to the method, an Android equipment starting mirror image is modified, so that a traditional OTG equipment mounting process is changed. The method comprises the following specific steps: modifying an equipment initialization process init so as to detect the OTG equipment before the Android system is started up, and creating a corresponding catalogue for the OTG equipment in an internal memory file system; then creating equipment nodes for the OTG equipment by use of an equipment cold starting process, so as to ensure that mounting a system partition and a data partition can be possibly implemented on the OTG equipment; modifying configuration files in a kernel, so that the system partition and the data partition on the OTG equipment are mounted on the kernal, and finally starting the Android equipment from the OTG equipment is finished. Aiming at the problem that the Android system can not be started from the OTG equipment by virtue of existing norms, the practical method is provided.

Description

technical field [0001] The invention relates to a method for starting an Android system, in particular to a method for starting an Android system from an OTG, and belongs to the technical field of communication. Background technique [0002] The development of USB technology enables data transmission between PC and peripheral devices. However, since the standard USB uses a master-slave architecture, only the USB host end ("master", that is, the computer) and the USB peripheral device ("slave") can carry out data transmission, and the USB peripheral devices cannot be transmitted through the USB port. data transmission. For this reason, OTG (On The Go), as a supplement to the USB2.0 version, is applied to the connection between different devices or mobile devices, and realizes data transmission between devices without a host. [0003] Android is a free and open source operating system based on Linux, mainly used in mobile devices, such as smart phones and tablets, led and de...

Claims

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Application Information

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IPC IPC(8): G06F9/445
Inventor 曾礼马忠梅赵旭强龙磊谭毓安李元章
Owner BEIJING INSTITUTE OF TECHNOLOGYGY