File system synchronous update method for accessing wireless USB flash disk through double terminals

Abstract

The embodiment of the invention provides a file system synchronous update method for accessing a wireless USB flash disk through double terminals. The method comprises the steps that the first terminal receives a file write operation request on a data storage area of the wireless USB flash disk; according to the file write operation request, the first terminal conducts corresponding processing on the data storage area; the first terminal makes a pin level of a D+ interface of the wireless USB flash disk set to be a high level; the first terminal receives access of the second terminal to the data storage area to make the second terminal conduct synchronous update processing on the data storage area obtained after processing is conducted. The first terminal receives the file write operation request, sent by the second terminal, on the data storage area through the D+ interface of the wireless USB flash disk; according to the file write operation request, the first terminal judges whether the second terminal completes the write operation on the data storage area or not; if yes, the first terminal conducts synchronous update processing on a file system module contained in the first terminal according to the data storage area completing the write operation.

Description

technical field [0001] The invention relates to the technical field of digital photography, the field of smart home control, and the technical field of file sharing, and in particular to a file system synchronous update method for dual-terminal access to a wireless U disk. Background technique [0002] U-disk, full name Universal Serial Bus (English: Universal Serial Bus, referred to as: USB) flash drive (English: USB flash disk). It is a miniature high-capacity mobile storage product that uses a USB interface and does not require a physical drive. It is connected to a computer through a USB interface to achieve plug and play. It can also be connected to other smart devices with USB host device (English: USB HOST) interface, such as smart phones. [0003] Compared with the traditional U disk, the wireless U disk has expanded the wireless transmission function. It can realize the file exchange between itself and other terminal devices through wireless access, that is, the te...

AI Technical Summary

Problems solved by technology

[0004] But existing wireless U disk and terminal equipment carry out file exchange and following defect also occurs: 1) after the data of wireless U disk data storage area changes, the first terminal that loads wireless U disk software system cannot communicate with the access wireless U disk. Multiple second terminals perform data synchronization, and the terminals cannot share data in time; 2) When the first terminal or the second terminal writes to the data storage area of ​​the wireless U disk, since the first terminal cannot perform data transfer with the second terminal, Real-time synchronization, so that the subsequent write operation of the first terminal or the second terminal will overwrite the data that has not been synchronized in real time before, resulting in data loss of the first terminal or the second terminal, and reducing user experience

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