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File packing and unpacking method for communication transmission

A file and unpacking technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of time occupation, space occupation, compression and decompression requiring a lot of time, etc., to achieve the effect of saving space

Inactive Publication Date: 2007-08-29
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that if there are a lot of small files, it takes a lot of time to compress and decompress. In the entire complete transmission time, the time used for compression and decompression occupies a large proportion. A new file is also generated, which also takes up a certain amount of space

Method used

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  • File packing and unpacking method for communication transmission
  • File packing and unpacking method for communication transmission
  • File packing and unpacking method for communication transmission

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Experimental program
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Embodiment Construction

[0030] specific implementation plan

[0031] Further description will be made below in conjunction with the accompanying drawings.

[0032] The course of work of the inventive method can be summarized as (see accompanying drawing 3 and accompanying drawing 4):

[0033] On the sender side, the packaged file is selected by the sender, and the record file is continuously modified after obtaining the file information. During this period, if the sender needs to add or delete files, it can also be obtained by modifying the record file.

[0034] When the file is being transmitted, it is not allowed to modify the file. If it is not being transmitted, the corresponding modification will be made to the record file after the file is modified. If it is to be unpacked, the record file can be deleted.

[0035] In the process of file transmission, the receiving party first receives the record file, then selects the path to store the package file, and then modifies the path information and ...

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PUM

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Abstract

The present invention provides a method for packing and unpacking file according to the deficiency of existing file compression mode. The main content is that the first byte position and file size of each file to be packed are acquired; thereby the end byte position can be calculated and record in a file, in the record file, the end byte of the former file is pointed to the first byte position of the later file to realize the connection of two files. The files can be connected by the method and the packing for all files can be realized. For the unpacking for the packing mode, the unpacking can be realized by only deleting the record file. Next, during the transmitting process, the record file is first transmitted to the receiver, the receiver then modifies the path information and first byte position based on the storing path and storing condition, then the packed file is transmitted, so the file to be received can be divided into several files during the receiving process. The transmitting speed can reach the transmitting speed of compressing and packing, and the packing time and space is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of data communication transmission, and specifically relates to a method for packing and unpacking files in communication transmission. Background technique [0002] With the continuous expansion of network bandwidth and the continuous acceleration of communication transmission speed, we can enjoy the speed of large file transmission, and files of hundreds of M or several G can be transferred at once. However, this speed is only for large files, and it is difficult to reflect this speed when a large number of small files need to be transferred. The reason is not that small files cannot achieve such a high transfer speed, but that when transferring a large number of files, it is necessary to establish, transfer, and end the transfer of each file one by one, which means that a lot of time is wasted on the establishment and completion of file transfers. End processing. Furthermore, in many network transfer to...

Claims

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Application Information

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IPC IPC(8): H04L12/56
Inventor 罗笑南李庆敏
Owner SUN YAT SEN UNIV
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