CN107729566A - A kind of index method for reconstructing for public transport vehicle-mounted hard disk audio/video data access - Google Patents

A kind of index method for reconstructing for public transport vehicle-mounted hard disk audio/video data access Download PDF

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Publication number
CN107729566A
CN107729566A CN201711120275.9A CN201711120275A CN107729566A CN 107729566 A CN107729566 A CN 107729566A CN 201711120275 A CN201711120275 A CN 201711120275A CN 107729566 A CN107729566 A CN 107729566A
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index
file
data
audio
frame
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CN201711120275.9A
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CN107729566B (en
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郭建国
张鑫
任海波
李翰楷
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ZHENGZHOU TIANMAI TECHNOLOGY Co Ltd
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ZHENGZHOU TIANMAI TECHNOLOGY Co Ltd
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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
    • G06F16/60—Information retrieval; Database structures therefor; File system structures therefor of audio data
    • G06F16/61—Indexing; Data structures therefor; Storage structures
    • 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
    • G06F16/71—Indexing; Data structures therefor; Storage structures

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Multimedia (AREA)
  • Data Mining & Analysis (AREA)
  • Databases & Information Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)

Abstract

The invention provides a kind of index method for reconstructing for public transport vehicle-mounted hard disk audio/video data access, when carrying out audio/video data access, using FAT file system, index file sets one-level index and secondary index, wherein, one-level index is file index, and secondary index is data frame index；Indexing process of reconstruction is：Step 1, the video data VIDEO IFRAME in video/audio or audio frame AUDIO FRAME are retrieved and establishes new data frame index；Step 2, original data frame index is read, and is contrasted with new data frame index；Step 3, the fileinfo in each data file is retrieved, and rebuilds new file index；Step 4, original file index is taken, and is contrasted with new file index.The present invention uses secondary index mechanism, can rapidly and accurately be indexed reconstruction, solve the problems, such as the error in data occurred during data access.

Description

A kind of index method for reconstructing for public transport vehicle-mounted hard disk audio/video data access
Technical field
The present invention relates to hard disc data to access field, specifically, relate to one kind and is used for public transport vehicle-mounted hard disk audio frequency and video The index method for reconstructing of data access.
Background technology
Index rebuild purpose be in order to prevent due to（1）Index is not synchronous；（2）Index is synchronized, but is not updated to In storage medium；（3）Index data misregistration, caused by can not search Video data（Actually Video data is to deposit ）The problem of.Index reconstruction is to be directed to " one-level index " file index and " secondary index " data frame index, and the rope established Draw reconstruction or recover function.Rebuild by indexing, can solve the problem that the error in data problem occurred during data access.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, there is provided a kind of design science, it is easy to accomplish, number can be ensured According to the index method for reconstructing for public transport vehicle-mounted hard disk audio/video data access of accuracy.
To achieve these goals, the technical solution adopted in the present invention is：One kind is used for public transport vehicle-mounted hard disk audio frequency and video The index method for reconstructing of data access, when carrying out audio/video data access, using FAT file system, index file sets one-level Index and secondary index, wherein, one-level index is file index, and secondary index is data frame index；Indexing process of reconstruction is：
Step 1, the video data VIDEO-IFRAME in video/audio or audio frame AUDIO-FRAME are retrieved and is established newly Data frame index；
Step 2, original data frame index is read, and is contrasted with new data frame index；
Step 2.1, if contrast is consistent, original data frame index need not be updated；
Step 2.2, if contrast is inconsistent, " new data frame index " is synchronized in storage medium " original number According to frame index " same position；
Step 2.3, repeat step 2.1 and step 2.2, until all data frame index, and opening of entirely indexing of final updated Begin and end time, deadline are synchronous；
Step 3, the fileinfo in each data file is retrieved, and rebuilds new file index；
Step 4, original file index is taken, and is contrasted with new file index；
Step 4.1, if contrast is consistent, original file index need not be updated；
Step 4.2, if contrast is inconsistent, new file index is synchronized to file index original in storage medium Same position；
Step 4.3, repeat step 4.1 and step 4.2, until all file frame index compare end, and more new file frame rope Draw and complete data syn-chronization.
The present invention has prominent substantive distinguishing features and marked improvement compared with the prior art, and specifically, the present invention uses Secondary index mechanism, reconstruction can be rapidly and accurately indexed, solve the problems, such as the error in data occurred during data access.
Brief description of the drawings
Fig. 1 is data frame index process of reconstruction figure of the present invention.
Fig. 2 is file index process of reconstruction figure of the present invention.
Embodiment
Below by embodiment, technical scheme is described in further detail.
As depicted in figs. 1 and 2, a kind of index method for reconstructing for public transport vehicle-mounted hard disk audio/video data access, carry out During audio/video data access, using FAT file system, index file sets one-level index and secondary index, wherein, one-level index For file index, secondary index is data frame index；Indexing process of reconstruction is：
Step 1, the video data VIDEO-IFRAME in video/audio or audio frame AUDIO-FRAME are retrieved and is established newly Data frame index；
Step 2, original data frame index is read, and is contrasted with new data frame index；
Step 2.1, if contrast is consistent, original data frame index need not be updated；
Step 2.2, if contrast is inconsistent, new data frame index is synchronized to data frame original in storage medium The same position of index；
Step 2.3, repeat step 2.1 and step 2.2, until all data frame index, and opening of entirely indexing of final updated Begin and end time, deadline are synchronous；
Step 3, the fileinfo in each data file is retrieved, and rebuilds new file index；
Step 4, original file index is taken, and is contrasted with new file index；
Step 4.1, if contrast is consistent, original file index need not be updated；
Step 4.2, if contrast is inconsistent, new file index is synchronized to file index original in storage medium Same position；
Step 4.3, repeat step 4.1 and step 4.2, until all file frame index compare end, and more new file frame rope Draw and complete data syn-chronization.
The secondary index mechanism that the present invention uses, index and the uniformity of data can be ensured：
（1）Corresponding video data VIDEO-IFRAME and audio frame AUDIO- can be accurately found by data frame index FRAME；
（2）The auxiliary information of recording indexes matches with effective data frame index in data frame index；
（3）Corresponding data file can accurately be found by file frame index；
（4）The auxiliary information of recording indexes matches with effective file frame index in file frame index；
Wherein, the auxiliary information of index is：Recording indexes are controlled the enqueue operations of index and are gone out team by the way of round-robin queue The auxiliary informations such as operation, date and time, passage, company information, fileinfo.
So as to be rebuild according to index, it is not synchronous to solve index, although or index be synchronized, be not updated to storage and be situated between It is caused the problem of can not searching Video data in matter, and index data misregistration.
Finally it should be noted that:The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still The embodiment of the present invention can be modified or equivalent substitution is carried out to some technical characteristics；Without departing from this hair The spirit of bright technical scheme, it all should cover among the claimed technical scheme scope of the present invention.

Claims (1)

  1. A kind of 1. index method for reconstructing for public transport vehicle-mounted hard disk audio/video data access, it is characterised in that：
    When carrying out audio/video data access, using FAT file system, index file sets one-level index and secondary index, wherein, One-level index is file index, and secondary index is data frame index；Indexing process of reconstruction is：
    Step 1, the video data VIDEO-IFRAME in video/audio or audio frame AUDIO-FRAME are retrieved and is established newly Data frame index；
    Step 2, original data frame index is read, and is contrasted with new data frame index；
    Step 2.1, if contrast is consistent, original data frame index need not be updated；
    Step 2.2, if contrast is inconsistent, " new data frame index " is synchronized in storage medium " original number According to frame index " same position；
    Step 2.3, repeat step 2.1 and step 2.2, until all data frame index, and opening of entirely indexing of final updated Begin and end time, deadline are synchronous；
    Step 3, the fileinfo in each data file is retrieved, and rebuilds new file index；
    Step 4, original file index is taken, and is contrasted with new file index；
    Step 4.1, if contrast is consistent, original file index need not be updated；
    Step 4.2, if contrast is inconsistent, new file index is synchronized to file index original in storage medium Same position；
    Step 4.3, repeat step 4.1 and step 4.2, until all file frame index compare end, and more new file frame rope Draw and complete data syn-chronization.
CN201711120275.9A 2017-11-14 2017-11-14 Index reconstruction method for bus-mounted hard disk audio/video data access Active CN107729566B (en)

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Cited By (1)

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CN109874049A (en) * 2019-01-23 2019-06-11 杭州雄迈集成电路技术有限公司 A method of video frame reading speed is extracted in optimization

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CN109874049B (en) * 2019-01-23 2021-04-27 杭州雄迈集成电路技术股份有限公司 Method for optimizing and extracting video frame reading speed

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