CN102281292A - traffic information transmission method, device and system - Google Patents
traffic information transmission method, device and system Download PDFInfo
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- CN102281292A CN102281292A CN2011102108892A CN201110210889A CN102281292A CN 102281292 A CN102281292 A CN 102281292A CN 2011102108892 A CN2011102108892 A CN 2011102108892A CN 201110210889 A CN201110210889 A CN 201110210889A CN 102281292 A CN102281292 A CN 102281292A
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Abstract
The embodiment of the invention discloses a traffic information transmission method, device and system, and relates to the field of communication, and the method, device and system provided by the invention can be used for solving the problem of slow speed of traffic information transmission and improving the timeliness of traffic information. The traffic information transmission method comprises the following steps: before a download instruction is sent, the traffic information is compressed according to the preset compression ratio at every preset time, and the download instruction is sent to a data receiving end, wherein a storage address of the compressed traffic information is carried in the download instruction. The method, device and system provided by the invention are mainly used for transmitting the traffic information from a data center to a traffic information processing center.
Description
Technical field
The present invention relates to a kind of communication technology, relate in particular to traffic information transfer method, device and system.
Background technology
Along with the raising of people's living standard, the people who buys private car is more and more.Because increasing people selects oneself to drive to go out, so cause the situation of traffic congestion.
When the driver drives to go out, can know the traffic information of the relevant road that the transport information processing center provides by meanss of communication such as broadcasting, mobile units, block up or unimpeded situation according to the highway of knowing, in time select suitable traffic route to arrive the destination.
In order to make the driver can accurately select suitable trip route, the promptness of transport information is extremely important.
In the prior art, can carry out traffic information collection by taxi company, and the transport information that collects is deposited in the data center of taxi company, these traffic information datas without any processing comprise very big data volume, taxi company is left intact to the traffic information data that collects, and directly is transferred to the transport information processing center from data center by wireless telecommunication system.
Because the traffic information data amount is bigger, when the data center of taxi company is transferred to the transport information processing center with transport information, these transport information speed when transmission is slow, causes transport information can not in time be transferred to information processing centre, so influence the real-time of transport information.
Summary of the invention
Embodiments of the invention provide a kind of traffic information transfer method, device and system, can solve data center when a large amount of transport information is transferred to the transport information processing center, because the traffic information data amount is big, cause the problem slowly of transmitting.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method of transport information transmission comprises:
Before sending download instruction, every the Preset Time section transport information to be compressed according to default compression factor, download instruction is used for the transport information after the designation data receiving terminal is downloaded compression;
Send download instruction to data receiver, in download instruction, carry the memory address of the transport information after the compression.
A kind of traffic information transfer method comprises:
Receive the download instruction that data sending terminal sends, carry the memory address of the transport information after the compression in the download instruction;
Download transport information after the compression according to memory address from data sending terminal.
A kind of transport information transmitting device comprises:
Compression module is used for every the Preset Time section transport information being compressed according to default compression factor before sending download instruction, and download instruction is used for the transport information after the designation data receiving terminal is downloaded compression;
Sending module is used for sending download instruction to data receiver, carries the memory address of the transport information after the compression in download instruction.
A kind of transport information transmitting device comprises:
Receiver module is used to receive the download instruction that data sending terminal sends, and carries the memory address of the transport information after the compression in the download instruction;
Download module is used for downloading transport information after the compression according to memory address from data sending terminal.
A kind of transport information transmission system comprises:
Data sending terminal is used for before sending download instruction transport information being compressed according to default compression factor, and download instruction is used to indicate the transport information after receiving terminal is downloaded compression; Send download instruction to receiving terminal, in download instruction, carry the memory address of the transport information after the compression;
Data receiver is used to receive the download instruction that data sending terminal sends, and carries the memory address of the transport information after the compression in the download instruction; Download transport information after the compression according to memory address from data sending terminal.
The traffic information transfer method that the embodiment of the invention provides, device and system, data sending terminal is before sending download instruction, every the Preset Time section transport information is compressed according to default compression factor, download instruction is used for the transport information after the designation data receiving terminal is downloaded compression; Data receiver sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction, and data receiver is downloaded transport information by the memory address of obtaining transport information.Data sending terminal compresses transport information according to default compression factor, by the compression transport information, the traffic information file after the compression is dwindled, thereby reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The flow chart of the traffic information transfer method that Fig. 1 provides for the embodiment of the invention;
The flow chart of another traffic information transfer method that Fig. 2 provides for the embodiment of the invention;
The flow chart of another traffic information transfer method that Fig. 3 provides for the embodiment of the invention;
The structure chart of the transport information transmitting device that Fig. 4 provides for the embodiment of the invention;
Fig. 5 is another enforcement structure chart of transport information transmitting device shown in Figure 4;
The structure chart of another transport information transmitting device that Fig. 6 provides for the embodiment of the invention;
Fig. 7 is another enforcement structure chart of transport information transmitting device shown in Figure 6;
The structure chart of the transport information transmission system that Fig. 8 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of traffic information transfer method, as shown in Figure 1, may further comprise the steps:
101, before sending download instruction, data sending terminal compresses transport information every the Preset Time section according to default compression factor, and download instruction is used for the transport information after the designation data receiving terminal is downloaded compression.
Before data sending terminal sends download instruction, data sending terminal can pass through LZO (Lempel-Ziv-Oberhumer, the coding that a kind of high compression ratio and pressing speed are exceedingly fast) compress technique is compressed transport information, the LZO compress technique can make compression time very short, is short to almost and can be left in the basket.
102, data sending terminal sends download instruction to data receiver, carries the memory address of the transport information after the compression in download instruction.
Data sending terminal sends download instruction to data receiver, comprises the memory address of the transport information after the compression in the download instruction, and data receiver can be downloaded transport information by the memory address of transport information.
The traffic information transfer method that present embodiment provides, data sending terminal were compressed transport information every the Preset Time section before sending download instruction according to default compression factor, download instruction is used for the transport information after the designation data receiving terminal is downloaded compression; Data sending terminal sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction, and data receiver is downloaded transport information by the memory address of obtaining transport information.Transport information is compressed according to default compression factor,, the traffic information file after the compression is dwindled, thereby reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed by the compression transport information.
The invention provides another kind of traffic information transfer method, as shown in Figure 2, may further comprise the steps:
201, data receiver receives the download instruction that data sending terminal sends, and carries the memory address of the transport information after the compression in the download instruction.
After the data sending terminal compression transport information, data sending terminal sends download instruction to receiving terminal, data receiver obtains the memory address of compression back transport information from download instruction, data receiver is downloaded transport information by the memory address of the transport information obtained.
202, the transport information after data receiver compresses from the data sending terminal download according to memory address.
Data receiver obtains the memory address of the transport information after the compression from download instruction, and then downloads transport information by the memory address of transport information.
The traffic information transfer method that present embodiment provides, before sending download instruction, data sending terminal compresses transport information every the Preset Time section according to default compression factor, and download instruction is used for the transport information after the designation data receiving terminal is downloaded compression; Data sending terminal sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction, and data receiver is downloaded transport information by the memory address of obtaining transport information.Data receiver compresses transport information according to default compression factor, by the compression transport information, the traffic information file after the compression is dwindled, thereby reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed.
As a kind of improvement of present embodiment, the embodiment of the invention provides another kind of traffic information transfer method, as shown in Figure 3, may further comprise the steps:
301, data sending terminal compressed transport information every the Preset Time section before sending download instruction according to default compression factor, and download instruction is used for the transport information after the designation data receiving terminal is downloaded compression.
The continuous receiving traffic information of data center, time parameter when comprising data acquisition in the transport information, data sending terminal is by the time parameter of timing reading of data center transport information, every the Preset Time section transport information is compressed according to default compression factor, reduce the transport information data quantity transmitted by compression, and then can effectively improve the transport information transmission speed.Concrete, can compress transport information by the LZO compress technique.About the LZO compress technique, be the described compression methods of knowing of those skilled in the art, do not repeat them here.
Acquisition process about transport information: at present, floating car data (FCD, Floating Car Data) be one of significant data source of Real-time Traffic Information, according to global positioning system is installed on automobile, automobile is in the process of travelling, by the transport information in the global positioning system periodic logging vehicle traveling process, for cost saving transport information processing center can be cooperated with the company that taxi company or logistics company etc. has more vehicle in selection, global positioning system is installed on vehicle, vehicle when travelling, write down the transport information in highway section of process, and the transport information of these records is transferred in real time the data center of cooperative venture by wireless telecommunication system.
Setting about the Preset Time section: Preset Time can be made as within 2 to 5 minutes, if Preset Time is too short, because the amount of traffic information that data center gathers seldom, not only wasted resource but also occupied bandwidth when then transmitting these transport information; If Preset Time is long, when information centre was transferred to the transport information processing center, the transport information processing center obtained out-of-date transport information, and then the real-time of image transport information.
302, the transport information after data sending terminal will compress is stored in the temporary file.
Because after these transport information are transferred to the user, these transport information will become out-of-date garbage, and take server memory, so the transport information of compression is deposited into temporary file, transport information after will compressing then is stored under web (net) the server issue catalogue, and distribute http (HyperText Transfer Protocol to transport information, HTML (Hypertext Markup Language)) address, addresses distributed is carried in sending to the download instruction of data receiver, data receiver finds the server of storing transport information by the transport information memory address, downloads transport information from the webserver.
303, data receiver receives the download instruction that data sending terminal sends, and carries the memory address of the transport information after the compression in the download instruction.
After the transport information compression is finished, transport information after data sending terminal will compress stores under the webserver issue catalogue, and the memory allocated address, data sending terminal sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction.
304, data receiver reads the memory address of the transport information after the compression.
Data receiver obtains the memory address of transport information from download instruction, read the memory address of the transport information after the compression, obtain the starting point and the terminal point of transport information memory address by the memory address that reads transport information, and then transport information is averaged segmentation by the starting point and the terminal point of memory address.
The memory address of the transport information after 305, data receiver will compress is carried out segmentation according to predetermined manner.
About predetermined manner: data receiver can be according to the bandwidth of Network Transmission, the memory address of the transport information after the compression is carried out segmentation according to predetermined manner, the bandwidth of the present network of basis in the embodiment of the invention, the transport information average mark is slit into five sections, adopt five threads to download transport information simultaneously, owing to be subjected to the restriction of bandwidth up till now, adopt five threads to download transport information and can improve speed of download preferably, but be not limited only in the practical application transport information is divided into five sections methods of implementing traffic data transmission of the present invention.
306, data receiver adopts the mode that multithreading is downloaded, and downloads the transport information after the compression of every section memory address correspondence simultaneously, and the transport information that downloads to is stored as temporary file.
The terminal point of the IP address of every section transport information memory address and every section transport information memory address after the data receiver computed segmentation, the transport information average mark is slit into five sections, every section transport information after cutting apart adopts a thread to download, all threads are downloaded simultaneously, take the multithreading transmission data transmission bauds can be tapered to 1/5th of direct transmission speed, improve the transmission speed of traffic information data greatly, improved the real-time of traffic information data.
307, data receiver judges whether occurred interrupting before the transport information after the compression is downloaded end.
If occurred interrupting before the transport information after the compression is downloaded end, then execution in step 308; If occurred interrupting before the transport information after the compression is downloaded end, then execution in step 309.
308, the starting point of transport information in memory address and the terminal point in memory address after the data receiver compression of determining to have downloaded reconnects download, and the terminal point from memory address begins to continue to download the part that the transport information after the compression is not downloaded.
When interruption occurring, transport information stops to download, if adopt prior art to download transport information, when reconnecting download, data receiver need be downloaded transport information again, has therefore wasted the plenty of time.In the present embodiment, the part that data receiver has been downloaded in will transport information is downloaded again, has saved download time.
309, data receiver continues to download transport information.
310, when downloading end, five sections transport information that data receiver will be downloaded are spliced according to the starting point and the terminal point of every section transport information memory address, and spliced transport information is carried out decompress(ion), deletion compressed file when decompress(ion) finishes.
The traffic information transfer method that present embodiment provides, data sending terminal were compressed transport information every the Preset Time section before sending download instruction according to default compression factor, download instruction is used for the transport information after the designation data receiving terminal is downloaded compression; Data sending terminal sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction, and data receiver is downloaded transport information by the memory address of obtaining transport information.Data receiver compresses transport information according to default compression factor, by the compression transport information, the traffic information file after the compression is dwindled, thereby reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed.
The embodiment of the invention provides a kind of transport information transmitting device, as shown in Figure 4, comprising: compression module 41, sending module 42.
Wherein, compression module 41 is used for every the Preset Time section described transport information being compressed according to default compression factor before sending download instruction, and download instruction is used for the transport information after the designation data receiving terminal is downloaded compression;
Data sending terminal can compress transport information by the LZO compress technique, and the LZO compress technique can make compression time very short, is short to almost and can be left in the basket.
Sending module 42 is used for sending download instruction to data receiver, carries the memory address of the transport information after the compression in download instruction.
Data sending terminal sends download instruction to data receiver, comprises the memory address of the transport information after the compression in the download instruction, and data receiver can be downloaded transport information by the memory address of transport information.
The transport information transmitting device that present embodiment provides, sending module is before sending download instruction, compression module compresses transport information every the Preset Time section according to default compression factor, download instruction is used for the transport information after the designation data receiving terminal is downloaded compression; Sending module sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction, and data receiver is downloaded transport information by the memory address of obtaining transport information.Transport information is compressed according to default compression factor,, the traffic information file after the compression is dwindled, thereby reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed by the compression transport information.
As a kind of improvement of present embodiment, the embodiment of the invention provides another kind of transport information transmitting device, as shown in Figure 5, comprising: compression module 51, first memory module 52, sending module 53.
Compression module 51 is used for every the Preset Time section transport information being compressed according to default compression factor before sending download instruction, and download instruction is used for the transport information after the designation data receiving terminal is downloaded compression.
Transport information waiting for transmission is compressed, reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed by compression.Concrete, can compress transport information by the LZO compress technique.
First memory module 52 is used for the transport information after the compression is stored as temporary file.
Transport information after the compression is deposited into temporary file, transport information after will compressing then is stored under web (net) the server issue catalogue, and distribute the http address to transport information, addresses distributed is carried in sending to the download instruction of data receiver, data receiver finds the server of storing transport information by the transport information memory address, downloads transport information from the webserver.
Sending module 53 is used for sending download instruction to data receiver, carries the memory address of the transport information after the compression in download instruction.
Data sending terminal sends download instruction to data receiver, comprises the memory address of the transport information after the compression in the download instruction, and data receiver can be downloaded transport information by the memory address of transport information.
The transport information transmitting device that present embodiment provides, sending module is before sending download instruction, compression module compresses transport information every the Preset Time section according to default compression factor, download instruction is used for the transport information after the designation data receiving terminal is downloaded compression; Sending module sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction, and data receiver is downloaded transport information by the memory address of obtaining transport information.Transport information is compressed according to default compression factor,, the traffic information file after the compression is dwindled, thereby reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed by the compression transport information.
The invention provides another kind of transport information transmitting device, as shown in Figure 6, comprising: receiver module 61, download module 62.
Wherein, receiver module 61 is used to receive the download instruction that data sending terminal sends, and carries the memory address of the transport information after the compression in the described download instruction.
Transport information after data sending terminal will compress stores under the webserver issue catalogue, and the memory allocated address, and data sending terminal sends download instruction, carries the memory address of the transport information after the compression in the download instruction.
The transport information transmitting device that present embodiment provides, sending module is before sending download instruction, compression module compresses transport information every the Preset Time section according to default compression factor, download instruction is used for the transport information after the designation data receiving terminal is downloaded compression; Sending module sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction, and data receiver is downloaded transport information by the memory address of obtaining transport information.Transport information is compressed according to default compression factor,, the traffic information file after the compression is dwindled, thereby reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed by the compression transport information.
As a kind of improvement of present embodiment, the embodiment of the invention provides another kind of transport information transmitting device, as shown in Figure 7, comprising: receiver module 71, read module 72, segmentation module 73, download module 74, second memory module 75.
Wherein, download module 74 comprises: judge module 741, breakpoint transmission module 742.
Data receiver obtains the memory address of transport information from download instruction, read the memory address of the transport information after the compression, comes the designation data receiving terminal to download transport information by the memory address of transport information.
Read module 72 is used to read the memory address of the transport information after the compression.
Data receiver obtains the memory address of transport information from download instruction, read the memory address of the transport information after the compression, obtain the starting point and the terminal point of transport information memory address by the memory address that reads transport information, and then transport information is averaged segmentation by the starting point and the terminal point of memory address.
Data receiver is according to the bandwidth of Network Transmission, the memory address of the transport information after the compression is carried out segmentation according to predetermined manner, the bandwidth of the present network of basis in the embodiment of the invention, the transport information draw is divided into five sections, but is not limited only in the practical application transport information is divided into five sections methods of implementing traffic data transmission of the present invention.
The terminal point of the IP address of every section transport information memory address and every section transport information memory address after the computed segmentation, every section transport information after cutting apart adopts a thread to download, all threads are downloaded simultaneously, take the multithreading transmission data transmission bauds can be tapered to 1/5th of direct transmission speed, improve the transmission speed of traffic information data greatly, improved the real-time of traffic information data.
Starting point and the terminal point in described memory address of transport information in memory address after the compression of determining to have downloaded, reconnect download, terminal point from memory address begins to continue to download the part that the transport information after the compression is not downloaded, if before the transport information after the compression is downloaded end, occur interrupting, continue to download transport information.
Five sections transport information downloading starting point and terminal point according to every section transport information memory address spliced, spliced transport information is stored as temporary file, and spliced transport information is decompressed, deletion compressed file when finishing decompresses.
The transport information transmitting device that present embodiment provides, sending module is before sending download instruction, compression module compresses transport information every the Preset Time section according to default compression factor, download instruction is used for the transport information after the designation data receiving terminal is downloaded compression; Data sending terminal sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction, and data receiver is downloaded transport information by the memory address of obtaining transport information.Transport information is compressed according to default compression factor,, the traffic information file after the compression is dwindled, thereby reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed by the compression transport information.
The embodiment of the invention provides a kind of transport information transmission system, as shown in Figure 8, comprising: data sending terminal 81 and data receiver 82.
Wherein, data sending terminal 81 can be the transport information transmitting device of Fig. 4 or Fig. 5 correspondence, and data receiver 82 can be the transport information transmitting device of Fig. 6 or Fig. 7 correspondence.
The transport information transmission system that present embodiment provides, data sending terminal is before sending download instruction, data sending terminal compresses transport information every the Preset Time section according to default compression factor, download instruction is used for the transport information after the designation data receiving terminal is downloaded compression; Data sending terminal sends download instruction to data receiver, carries the memory address of the transport information after the compression in the download instruction, and data receiver is downloaded transport information by the memory address of obtaining transport information.Data sending terminal compresses transport information according to default compression factor, by the compression transport information, the traffic information file after the compression is dwindled, thereby reduced the transport information data quantity transmitted, and then can effectively improve the transport information transmission speed.
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk as computer, hard disk or CD etc., comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (13)
1. a traffic information transfer method is characterized in that, comprising:
Before sending download instruction, every the Preset Time section transport information to be compressed according to default compression factor, described download instruction is used for the transport information after the designation data receiving terminal is downloaded compression;
Send described download instruction to described data receiver, the memory address of the transport information after in described download instruction, carrying compression.
2. traffic information transfer method according to claim 1 is characterized in that, described method also comprises:
Transport information after the compression is stored as temporary file.
3. a traffic information transfer method is characterized in that, comprising:
Receive the download instruction that data sending terminal sends, carry the memory address of the transport information after the compression in the described download instruction;
Download transport information after the compression according to described memory address from described data sending terminal.
4. traffic information transfer method according to claim 3 is characterized in that, before the transport information after downloading compression according to described memory address from described data sending terminal, described method also comprises:
Read the memory address of the transport information after the compression;
The memory address of the transport information after the described compression is carried out segmentation according to predetermined manner;
The described transport information of downloading after the compression from described data sending terminal according to described memory address is: the mode that adopts multithreading to download, download the transport information after the compression of every section memory address correspondence simultaneously.
5. traffic information transfer method according to claim 4 is characterized in that, described method also comprises:
The transport information that downloads to is stored as temporary file.
6. traffic information transfer method according to claim 5 is characterized in that, the described transport information of downloading after compressing from described data sending terminal according to described memory address comprises:
If starting point and the terminal point in described memory address of transport information in described memory address after the described compression of determining to have downloaded before the transport information after the described compression is downloaded end, occur interrupting;
Reconnect download, the terminal point from described memory address begins to continue to download the part that the transport information after the described compression is not downloaded.
7. a transport information transmitting device is characterized in that, comprising:
Compression module is used for every the Preset Time section transport information being compressed according to default compression factor before sending download instruction, and described download instruction is used for the transport information after the designation data receiving terminal is downloaded compression;
Sending module is used for sending described download instruction to described data receiver, the memory address of the transport information carry compression in described download instruction after.
8. transport information transmitting device according to claim 7 is characterized in that, also comprises:
First memory module is used for the transport information after the compression is stored as temporary file.
9. a transport information transmitting device is characterized in that, comprising:
Receiver module is used to receive the download instruction that data sending terminal sends, and carries the memory address of the transport information after the compression in the described download instruction;
Download module is used for downloading transport information after the compression according to described memory address from data sending terminal.
10. transport information transmitting device according to claim 9 is characterized in that, also comprises:
Read module is used to read the memory address of the transport information after the compression;
Segmentation module is used for the memory address of the transport information after the described compression is carried out segmentation according to predetermined manner;
Transport information after described download module compresses from the data sending terminal download according to described memory address is: described download module adopts the mode of multithreading download, the transport information after compressing from the data sending terminal download according to described memory address.
11. transport information transmitting device according to claim 10 is characterized in that, also comprises:
Second memory module, the transport information that is used for downloading to is stored as temporary file.
12. will it is characterized in that described download module also comprises with regard to 11 described transport information transmitting devices according to right:
Judge module is used for if starting point and the terminal point in described memory address of transport information in described memory address after the described compression of determining to have downloaded occurred interrupting before the transport information after the described compression is downloaded end;
The breakpoint transmission module is used to reconnect download, and the terminal point from described memory address begins to continue to download the part that the transport information after the described compression is not downloaded.
13. transport information transmission system, it is characterized in that, comprise: data sending terminal and data receiver, described data sending terminal are claim 7 or 8 described transport information transmitting devices, and described data receiver is each described transport information transmitting device of claim 9 to 12.
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| CN2011102108892A CN102281292A (en) | 2011-07-26 | 2011-07-26 | traffic information transmission method, device and system |
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| CN2011102108892A CN102281292A (en) | 2011-07-26 | 2011-07-26 | traffic information transmission method, device and system |
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