WO2015185022A1 - 一种提取dvr硬盘中残余视频和被删除视频的装置和方法 - Google Patents

一种提取dvr硬盘中残余视频和被删除视频的装置和方法 Download PDF

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WO2015185022A1
WO2015185022A1 PCT/CN2015/083392 CN2015083392W WO2015185022A1 WO 2015185022 A1 WO2015185022 A1 WO 2015185022A1 CN 2015083392 W CN2015083392 W CN 2015083392W WO 2015185022 A1 WO2015185022 A1 WO 2015185022A1
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hard disk
video
dvr
deleted
dvr hard
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PCT/CN2015/083392
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French (fr)
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梁效宁
许超明
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四川效率源信息安全技术有限责任公司
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Priority to US15/315,927 priority Critical patent/US9740776B2/en
Publication of WO2015185022A1 publication Critical patent/WO2015185022A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
    • G06F16/78—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/17—Details of further file system functions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0604—Improving or facilitating administration, e.g. storage management
    • G06F3/0607—Improving or facilitating administration, e.g. storage management by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
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    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0614—Improving the reliability of storage systems
    • G06F3/0619—Improving the reliability of storage systems in relation to data integrity, e.g. data losses, bit errors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0638—Organizing or formatting or addressing of data
    • G06F3/0643—Management of files
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
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    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
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    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
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    • G06F3/0673—Single storage device
    • G06F3/0674—Disk device
    • G06F3/0677—Optical disk device, e.g. CD-ROM, DVD

Definitions

  • the present invention relates to the field of information security technologies, and in particular, to an apparatus for extracting residual video and deleted video in a DVR hard disk, and to a method based on the device.
  • DVRs which use hard disks to store video data, have replaced analog video recorders.
  • the DVR has a PC-based PC-based DVR and an embedded DVR that is off-chip. It is a computer system capable of independent image storage processing, with long-term recording, recording, remote monitoring and control of images and voice. However, due to various reasons, video data deletion and video coverage are easily caused, resulting in data loss.
  • the residual video and the deleted video file cannot be extracted, and when the DVR hard disk data is extracted, the information of the video stream header generated by the manufacturer and the hard disk model is different, which brings incompatibility to the extracted hard disk data.
  • the present invention provides a method for extracting residual video and deleted video in a DVR hard disk according to the defects of the prior art, and can effectively solve the above problems existing in the prior art.
  • the technical solution adopted by the present invention is: a device for extracting residual video and deleted video in a DVR hard disk, including a DVR hard disk, a storage hard disk, a display device, a control device, and a system main processor, where the system is The processor is used for analyzing and extracting video data, and has a power supply and an input/output controller interface for connecting the control device and the display device, and a serial communication controller interface, an output power interface, a USB3.0 high-speed interface, and a high speed. SATA interface; the system main processor is connected to the storage hard disk through the USB3.0 high-speed interface, through the high-speed SATA interface and the DVR The hard disk is connected, and the output power interface is connected to the storage hard disk and the DVR hard disk.
  • the system main processor includes an identification module for identifying the DVR hard disk, a parsing module for parsing the disk partition, a scanning module for scanning and enumerating the video file, and an extracting module for extracting the video file, and the appeal modules are mutually connected.
  • said display device is a touch screen display.
  • control device is a mouse and a keyboard.
  • a method for extracting residual video and deleted video in a DVR hard disk comprising the following steps:
  • the DVR hard disk is connected to the system main processor through a high-speed SATA interface, and the storage hard disk is connected to the system main processor through the interface to identify the connected device;
  • the system main processor automatically parses the file system to determine whether the file system of the DVR hard disk can be identified;
  • the clusters of the DVR hard disk are parsed one by one, and the free area outside the covered area is found, and the stream header information of the residual video stored in the sector in the free area is analyzed; if the deleted video is extracted, the fan is parsed one by one. Zone, find the sector marked with the deletion mark, and parse the stream header information of the video in the sector;
  • channel number filter to extract the video file, converted to a PC can be used to import ordinary video files into the storage hard disk.
  • step 2 Preferably, if the step 2 cannot automatically parse the file system, manually select the monitoring manufacturer matching text. System; go to the next step.
  • the step 5 is repeated until the full scan of the hard disk is completed and then proceeds to the next step.
  • the invention has the advantages that the DVR hard disk of each model can be parsed and extracted data, and the files in the hard disk can be reorganized into effective, single-channel, continuously played video files; And the screening of useful video data, thereby reducing human and material resources; the technology is first-rate, the results are original, fill the gap in the field; and the use of the future, due to fast, efficient, useful, and extremely high technology use value . Due to the large number of objects used, the scope is wide and has a high social use prospect.
  • FIG. 1 is a structural diagram of a device according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a main processor of the system of the present invention.
  • Figure 3 is a flow chart of an embodiment of the present invention.
  • the present invention provides an apparatus for extracting residual video and deleted video in a DVR hard disk, including a DVR hard disk, a storage hard disk, a display device, a control device, and a system main processor, where the system main processor is used for analysis.
  • the system main processor is connected to the storage hard disk through the USB3.0 high-speed interface, and is connected to the DVR hard disk through the high-speed SATA interface, and the output power interface is connected with the storage hard disk and the DVR hard disk.
  • the system main processor includes an identification module 1 for identifying a DVR hard disk.
  • the parsing module 2 for parsing the disk partition
  • the scanning module 3 for scanning and enumerating the video files
  • the extracting module 4 for extracting the video files, the appeal modules are connected to each other.
  • the serial communication controller interface includes a USB interface, an SD card, an SDHC card, an MMC card, an SM card, a memory stick, an xD card, etc.
  • the display device is a touch screen display
  • the control device is a mouse and a keyboard.
  • the present invention provides a method for extracting residual video and deleted video in a DVR hard disk, including the following steps:
  • the DVR hard disk is connected to the system main processor through a high-speed SATA interface, and the storage hard disk is connected to the system main processor through the USB interface to identify the connected device.
  • the storage hard disk may be any storage device including a U disk, an SD card, and a mobile device. Hard disk, PC hard disk, etc.
  • the system main processor automatically parses the file system to determine whether it can identify the file system of different models of DVR hard disks produced by various manufacturers;
  • the clusters of the DVR hard disk are parsed one by one, and the free area outside the covered area is found, and the stream header information of the residual video stored in the sector in the free area is analyzed; if the deleted video is extracted, the fan is parsed one by one. Zone, find the sector marked with the deletion mark, and parse the stream header information of the video in the sector;
  • step 2 cannot automatically parse the file system, manually select the monitoring manufacturer to match the file system; go to the next step.
  • the step 5 needs to be repeated until the full scan of the hard disk is completed, and then proceeds to the next step.
  • the practical use of the method is: carrying the extraction device using the method to rush to the video location to be extracted, the data acquisition personnel removes the video capture point to monitor the host's hard disk, and connects the monitoring hard disk and the data target disk through the interface or the hard disk slot to the extraction.
  • the device uses the device to extract and complete the operation.

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Abstract

本发明公开了一种提取DVR硬盘中残余视频和被删除视频的装置，包括DVR硬盘、存储硬盘、显示设备、控制设备、系统主处理器，系统主处理器与存储硬盘和DVR硬盘连接，输出电源接口与存储硬盘和DVR硬盘连接。还公开了基于该装置的方法，1)连接并识别设备；2)判断是否能识别文件系统；3)如能识别解析磁盘分区、匹配文件系统；4)对扇区逐个扫描；5)解析视频数据截取并记录；6)列举视频列表并显示；7)提取视频。本方法对各个厂家各个型号的DVR硬盘均可解析并提取数据，可将硬盘内的文件重组为有效的、单通道的、连续播放的视频文件；可解析和筛选出有用的视频数据，从而降低人力物力；本技术具有率先性，成果具有独创性，填补了该领域的空白；且使用前景广阔，由于快速、高效、有用，具有极高的技术使用价值。由于使用的对象多，范围广，具有极高的社会使用前景。

Description

一种提取DVR硬盘中残余视频和被删除视频的装置和方法 技术领域
本发明涉及信息安全技术领域，尤其涉及一种提取DVR硬盘中残余视频和被删除视频的装置，还涉及基于该装置的方法。
背景技术
硬盘录像机，用硬盘储存视频数据，已取代模拟视频录像机。硬盘录像机有基于PC架构的PC式DVR和脱离PC架构的嵌入式DVR。它是一套能够独立进行图像存储处理的计算机系统，具有对图像、语音进行长时间录像、录音、远程监视和控制的功能。但是由于各种原因容易造成视频数据删除和视频覆盖，造成数据的丢失。
目前，残余视频和被删除视频文件不能提取，且在提取DVR硬盘数据时，因厂家不同及硬盘型号不同所产生的视频流头的信息是不同的对提取硬盘数据带来不兼容的问题。
发明内容
本发明针对现有技术的缺陷提供一种提取DVR硬盘中残余视频和被删除视频的方法，能有效的解决上述现有技术存在的问题。
为了实现上述目的，本发明采用的技术方案是：一种提取DVR硬盘中残余视频和被删除视频的装置，包括DVR硬盘、存储硬盘、显示设备、控制设备、系统主处理器，所述系统主处理器用于分析并提取视频数据，其内部设有电源和用于连接控制设备和显示设备的输入输出控制器接口，表面设有串口通讯控制器接口、输出电源接口、USB3.0高速接口、高速SATA接口；所述系统主处理器通过USB3.0高速接口与存储硬盘连接，通过高速SATA接口与DVR 硬盘连接,所述输出电源接口与存储硬盘和DVR硬盘连接。
作为优选，所述系统主处理器包括用于识别DVR硬盘的识别模块、解析磁盘分区的解析模块、扫描并列举视频文件的扫描模块、提取视频文件的提取模块，上诉模块之间彼此配合连接。
作为优选，所述显示设备为触屏显示器。
作为优选，所述控制设备为鼠标和键盘。
一种提取DVR硬盘中残余视频和被删除视频的方法，包括以下步骤：
1)、DVR硬盘通过高速SATA接口与系统主处理器连接，存储硬盘通过接口与系统主处理器连接，识别连接的设备；
2)、系统主处理器自动解析文件系统，判断是否能识别DVR硬盘的文件系统；
3)、如能识别开始解析磁盘分区、匹配文件系统，选择对应磁盘，选择提取残余视频或被删除视频；
4)、若提取残余视频，对DVR硬盘的簇进行逐个解析，找到被覆盖区域以外的空闲区域，解析空闲区域内扇区所存残余视频的流头信息；若提取被删除的视频，逐个解析扇区，找到标示部分被标有删除标记的扇区，解析扇区内视频的流头信息；
5)、通过视频流头信息的特定标记，对比视频文件的时间和通道号，通道号一致且时间段一致继续对下一扇区的特定标记进行解析，如通道号不一致或时间段超出规定将上一段解析的视频数据截取并记录；
6)、列举所有截取并记录的视频文件列表并显示；
7)、根据需要可全部提取或通过视频时间、通道号筛选提取视频文件，转换为PC可使用的普通视频文件导入存储硬盘。
作为优选，所述步骤2如不能自动解析文件系统，则手动选择监控厂家匹配文 件系统；进入下一步。
作为优选，如执行步骤4、5时得不到有效视频数据，需对硬盘全部数据进行镜像打包。
作为优选，所述步骤5需重复实施直至完成对硬盘的全面扫描后进入下一步。
与现有技术相比本发明的优点在于：对各个厂家各个型号的DVR硬盘均可解析并提取数据，可将硬盘内的文件重组为有效的、单通道的、连续播放的视频文件；可解析和筛选出有用的视频数据，从而降低人力物力；本技术具有率先性，成果具有独创性，填补了该领域的空白；且使用前景广阔，由于快速、高效、有用，具有极高的技术使用价值。由于使用的对象多，范围广，具有极高的社会使用前景。
附图说明
图1为本发明实施例的装置结构图；
图2为本发明系统主处理器的结构示意图；
图3为本发明实施例的流程图。
具体实施方式
如图1所示，本发明提供一种提取DVR硬盘中残余视频和被删除视频的装置，包括DVR硬盘、存储硬盘、显示设备、控制设备、系统主处理器，所述系统主处理器用于分析并提取视频数据，其内部设有电源和用于连接控制设备和显示设备的输入输出控制器接口，表面设有串口通讯控制器接口、输出电源接口、USB3.0高速接口、高速SATA接口；所述系统主处理器通过USB3.0高速接口与存储硬盘连接，通过高速SATA接口与DVR硬盘连接,所述输出电源接口与存储硬盘和DVR硬盘连接。
如图2所示，所述系统主处理器包括用于识别DVR硬盘的识别模块1、 解析磁盘分区的解析模块2、扫描并列举视频文件的扫描模块3、提取视频文件的提取模块4，上诉模块之间彼此配合连接。
所述串口通讯控制器接口包括USB接口、SD卡、SDHC卡、MMC卡、SM卡、记忆棒、xD卡等，所述显示设备为触屏显示器，所述控制设备为鼠标和键盘。
如图3所示，本发明提供一种提取DVR硬盘中残余视频和被删除视频的方法，包括以下步骤：
1)、DVR硬盘通过高速SATA接口与系统主处理器连接，存储硬盘通过USB接口与系统主处理器连接，识别连接的设备，所述存储硬盘可以是任何存储设备包括U盘、SD卡、移动硬盘、PC硬盘等；
2)、系统主处理器自动解析文件系统，判断是否能识别各个厂家生产的不同型号的DVR硬盘的文件系统；
3)、如能识别开始解析磁盘分区、匹配文件系统，选择对应磁盘，选择提取残余视频或被删除视频；
4)、若提取残余视频，对DVR硬盘的簇进行逐个解析，找到被覆盖区域以外的空闲区域，解析空闲区域内扇区所存残余视频的流头信息；若提取被删除的视频，逐个解析扇区，找到标示部分被标有删除标记的扇区，解析扇区内视频的流头信息；
5)、通过视频流头信息的特定标记，对比视频文件的时间和通道号，通道号一致且时间段一致继续对下一扇区的特定标记进行解析，如通道号不一致或时间段超出规定将上一段解析的视频数据截取并记录；
6)、列举所有截取并记录的视频文件列表并显示在显示器上；
7)、根据需要可全部提取或通过视频时间、通道号筛选提取视频文件，转 换为PC可使用的普通视频文件导入存储硬盘。
所述步骤2如不能自动解析文件系统，则手动选择监控厂家匹配文件系统；进入下一步。
如执行步骤4、5时得不到有效视频数据，需对硬盘全部数据进行镜像打包，另行解决。
所述步骤5需重复实施直至完成对硬盘的全面扫描后进入下一步。
该方法的实际用途为：携带使用该方法的提取设备赶赴需提取视频位置，数据调取人员拆除视频调取点监控主机的硬盘，将监控硬盘与数据目标盘通过接口或硬盘插槽连接至提取设备，使用设备进行提取，完成操作。
以上描述阐述了具体细节以便充分理解本发明，但本发明还可以采用其他不同于此描述方式来实施，因此本发明并不限于以上公开的具体实施例。

Claims (8)

  1. 一种提取DVR硬盘中残余视频和被删除视频的装置，包括DVR硬盘、存储硬盘、显示设备、控制设备，其特征在于：还包括系统主处理器，所述系统主处理器用于分析并提取视频数据，其内部设有电源和用于连接控制设备和显示设备的输入输出控制器接口，表面设有串口通讯控制器接口、输出电源接口、USB3.0高速接口、高速SATA接口；所述系统主处理器通过USB3.0高速接口与存储硬盘连接，通过高速SATA接口与DVR硬盘连接,所述输出电源接口与存储硬盘和DVR硬盘连接。
  2. 根据权利要求1所述的一种提取DVR硬盘中残余视频和被删除视频的方法，其特征在于：所述系统主处理器包括用于识别DVR硬盘的识别模块、解析磁盘分区的解析模块、扫描并列举视频文件的扫描模块、提取视频文件的提取模块，上诉模块之间彼此配合连接。
  3. 根据权利要求1所述的一种提取DVR硬盘中残余视频和被删除视频的方法，其特征在于：所述显示设备为触屏显示器。
  4. 根据权利要求1所述的一种提取DVR硬盘中残余视频和被删除视频的方法，其特征在于：所述控制设备为鼠标和键盘。
  5. 一种提取DVR硬盘中残余视频和被删除视频的方法，其特征在于：包括以下步骤：
    1)、DVR硬盘通过高速SATA接口与系统主处理器连接，存储硬盘通过接口与系统主处理器连接，识别连接的设备；
    2)、系统主处理器自动解析文件系统，判断是否能识别DVR硬盘的文件系统；
    3)、如能识别开始解析磁盘分区、匹配文件系统，选择对应磁盘，选择提取残余视频或被删除视频；
    4)、若提取残余视频，对DVR硬盘的簇进行逐个解析，找到被覆盖区域以外的空闲区域，解析空闲区域内扇区所存残余视频的流头信息；若提取被删除的视频，逐个解析扇区，找到标示部分被标有删除标记的扇区，解析扇区内视频的流头信息；
    5)、通过视频流头信息的特定标记，对比视频文件的时间和通道号，通道号一致且时间段一致继续对下一扇区的特定标记进行解析，如通道号不一致或时间段超出规定将上一段解析的视频数据截取并记录；
    6)、列举所有截取并记录的视频文件列表并显示；
    7)、根据需要可全部提取或通过视频时间、通道号筛选提取视频文件，转换为PC可使用的普通视频文件导入存储硬盘。
  6. 根据权利要求1所述的一种提取DVR硬盘中残余视频和被删除视频的方法，其特征在于：所述步骤2如不能自动解析文件系统，则手动选择监控厂家匹配文件系统；进入下一步。
  7. 根据权利要求1所述的一种提取DVR硬盘中残余视频和被删除视频的方法，其特征在于：如执行步骤4、5时得不到有效视频数据，需对硬盘全部数据进行镜像打包。
  8. 根据权利要求1所述的一种提取DVR硬盘中残余视频和被删除视频的方法，其特征在于：所述步骤5需重复实施直至完成对硬盘的全面扫描后进入下一步。
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