File system for security and protection video monitoring equipment

Abstract

The invention relates to a file system for security and protection video monitoring equipment. The file system for the security and protection video monitoring equipment comprises a data structure and an operation mechanism, and is characterized in that the data structure is statically stored on a storage medium through certain arrangement and is dynamically stored in a memory so as to support the operation mechanism of the file system; the data structure comprises file system parameters, a conflict cluster number list, a directory entry list, an index entry list and a data area; the operation mechanism comprises a runtime mechanism, a lower layer buffer mechanism, an upper layer operation mechanism and an adaptation mechanism. The file system for the security and protection video monitoring equipment is specially designed for streaming media data storage on the security and protection video monitoring equipment. According to characteristics of the streaming media data, special parameter items are replaced or expanded on the data structure, parameter items such as channels, time, file types and image quality are extracted so as to improve upper layer operation efficiency, and the file system for the security and protection video monitoring equipment is more convenient to use and high in use ratio.

Description

technical field [0001] The invention relates to a file system, in particular to a special file system for security video monitoring equipment, which belongs to the field of security video monitoring. Background technique [0002] At present, the main external computer storage devices on the market are disks and flash drives. The storage method is to divide the disk or flash drive into several partitions, and then format each partition into a specified file system. If the operating system kernel can support partitions on the file system, you can mount the partition and perform general read and write operations on the partition mount directory. Taking the Linux operating system as an example, its workflow is as follows: Picture 1-1 , where the formatting operation is only performed when the specified file system is used for the first time or when data is wiped out. [0003] The currently popular partition modes are only MBR and GPT, which are relatively fixed; and there are ...

AI Technical Summary

Problems solved by technology

[0006] 1. The adaptability has not been used. The standard file system can support ordinary, link, device and pipeline files of various sizes, but it is only used to store streaming media files with uniform density.

[0007] 2. The functions are not fully utilized, and advanced functions such as logging, compression, and encryption that the standard file system can have are all idle

[0008] 3. The space utilization rate of the storage medium is low. The power of the standard file system is based on the classic data structure and algorithm. The metadata needs to consume space when formatting, and the index created by the file system in the process of writing data in the upper layer at runtime requires consume space

In the state of being idle, most items in the data structure of metadata and index are redundant, resulting in unnecessary waste of space

[0009] 4. Performance issues. The index of the standard file system is not tailor-made for streaming media data storage on video surveillance equipment. It is difficult to replace or expand dedicated parameter items in its data structure, which means that streaming media data is somewhat Key information needs to be stored in additional files, and these key information files and streaming media data files are treated equally, that is, the buffer buffer / cache is used equally. Obviously, the former requires the same high buffer priority as the standard file system index, while the latter is not suitable. buffered

Both of these situations result in higher frequency of head movement and memory overhead, reducing system performance

[0010] 5. Information security issues, the data on the standard file system can be obtained and read by unauthorized users in the form of files

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