Data analysis and extraction method based on embedded security protection equipment

Abstract

The invention discloses a data analysis and extraction method based on embedded security protection equipment, and belongs to the technical field of data recovery. The method comprises the following steps that: 101: analyzing the DBR (Dos Boot Record) table of the first beginning sector of a disk, wherein the DBR table records the amount of disk data blocks, the size of each data block, and the beginning position information of the first data block; 102: according to the position and the size, which are recorded in the DBR table, of the first data block, determining the management table of the first data block, wherein the management table records the deviation position, the channel and the time information of each data stream; and 103: according to video stream information recorded by the management table of the data block, finding the stream head, which is a video head for short, of the video stream, and recording the labelling head and the time information of video decoding in the video head. The method has the beneficial effects that effective video data files in disk data can be quickly extracted, and the lost deleted video data files are recovered.

Description

technical field [0001] The invention belongs to the field of data recovery, in particular to a data analysis and extraction method based on embedded security equipment. Background technique [0002] Embedded system (Embedded system), is a kind of "dedicated computer system completely embedded inside the controlled device, designed for a specific application", the embedded system is the control, monitoring, auxiliary equipment, machine or equipment used for factory operation. Unlike general-purpose computer systems such as personal computers, embedded systems typically perform predefined tasks with specific requirements. Embedded systems are systems used to control or monitor large-scale equipment such as machines, devices, and factories. Typically, an embedded system is an embedded processor control board with a control program stored in ROM. In fact, all devices with digital interfaces, such as watches, microwave ovens, video recorders, cars, etc., use embedded systems, a...

AI Technical Summary

Problems solved by technology

However, due to various reasons, it is easy to cause video data deletion and video coverage, resulting in data loss

[0006] At present, residual video and deleted video files cannot be extracted, and when extracting DVR hard disk data, the information of the video stream header is different due to different manufacturers and different hard disk models, which brings incompatibility to extract hard disk data

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