CN103873543A - A data transmission system and its transmission method - Google Patents

Abstract

The invention discloses a data transmission system, which comprises a plurality of electronic devices, a verification server and at least one access server; the electronic devices pass through the authentication server for identity authentication, and a data transmission group is formed between the authenticated electronic devices; the receiving end of the data transmission group sends out a command to the rest electronic devices in the data transmission group through the verification server; when the rest electronic devices receive the command, the metadata is output to the access server, and the receiving end can obtain the metadata through the access server, wherein the receiving end requests the transmitting end in the data transmission group for the entity file according to the metadata, the transmitting end transmits the entity file to the access server, and the access server transmits the entity file to the receiving end. The invention also discloses a data transmission method applied to the data transmission system.

Description

A data transmission system and its transmission method

technical field

The present invention relates to a data transmission system and method, in particular to a data transmission system and method for multiple electronic devices.

Background technique

Generally, data transfer between networked electronic devices is mainly realized through several transmission modes, such as File Transfer Protocol (File Transfer Protocol, FTP), cloud storage space, and STUN (Session Traversal Utilities for NAT) protocol.

However, there are many limitations in using the file transfer protocol. Secondly, the complete storage of files in the cloud storage space has the risk of data leakage. Furthermore, some routers cannot establish a connection between two electronic devices through the STUN protocol.

It can be seen that the existing method obviously still has inconvenience and defects, and needs to be improved; in order to solve the problem, the relevant fields have tried their best to seek a solution, but a suitable solution has not been developed for a long time. plan.

Contents of the invention

The present invention provides a data transmission system and method, which are used to improve the problems existing in traditional file transfer protocol, cloud storage space and STUN protocol.

The present invention relates to a data transmission system, which includes a plurality of electronic devices, a verification server, and at least one access server; the verification server is coupled to a plurality of electronic devices, wherein the electronic devices perform identity verification through the verification server, and the verified electronic devices A data transmission group is formed, one of the electronic devices in the data transmission group is used as a receiving end, and the receiving end sends a command to the verification server, and the verification server receives and transmits the command to the remaining electronic devices in the data transmission group; at least one access server is coupled Connected to the electronic device, wherein when the remaining electronic devices receive the command, output the metadata to the access server, the receiving end can obtain the metadata through the access server, one of the remaining electronic devices acts as the transmitting end, and the receiving end According to the metadata, the entity file related to the metadata is requested from the transmitting end, and the entity file is transmitted from the transmitting end to the access server, and then the access server transmits the entity file to the receiving end.

The present invention relates to a data transmission method applied to a data transmission system. The data transmission system includes a plurality of electronic devices, a verification server, and at least one access server; the data transmission method includes the following steps: The electronic devices perform identity verification, and the electronic devices that have passed the verification form a data transmission group, and the electronic devices share internal metadata with each other; when any electronic device requires a physical file according to the metadata, Judging that the data transmission system operates on the Internet or a local area network; when the data transmission system operates on the Internet, one of the electronic devices in the data transmission group acts as the transmitting end, and uploads the entity file related to the metadata to the access server, and the data transmission The rest of the electronic devices in the group serve as the receiving end to download the entity file via the access server; and when the data transmission system operates in the local area network, the transmitting end directly transmits the entity file related to the metadata to the receiving end.

Description of drawings

FIG. 1 is a schematic diagram of a data transmission system according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a data transmission system according to a second embodiment of the present invention;

FIG. 3 is a transmission flowchart of a data transmission method according to a third embodiment of the present invention;

FIG. 4 is a transmission flowchart of a data transmission method according to a fourth embodiment of the present invention;

FIG. 5 is a flow chart of receiving a data transmission method according to a fifth embodiment of the present invention.

Detailed ways

In order to make the narration of the present disclosure more detailed and complete, the following provides an illustrative description for the specific embodiments of the present invention; but this is not the only form of implementing or using the specific embodiments of the present invention; multiple Features of specific embodiments and method steps and sequences thereof for constructing and operating those embodiments; however, other embodiments can be utilized to achieve the same or equivalent functions and step sequences.

Unless otherwise defined in this specification, the meanings of scientific and technical terms used herein are the same as those commonly understood and commonly used by those skilled in the art to which this invention belongs. In addition, the singular nouns used in this specification include the plural forms of the nouns, and the plural nouns used also include the singular forms of the nouns, unless the context conflicts with the context.

In order to solve the problems existing in the background technology, the present invention provides a data transmission system. Here, two implementation schemes are exemplarily listed, which are shown in FIG. 1 and FIG. 2 respectively, wherein the detailed implementation of the data transmission system 100 The methods will be introduced respectively in Figure 1 and Figure 2 below.

First, FIG. 1 is a schematic diagram of a data transmission system 100 according to the first embodiment of the present invention; as shown in the figure, the data transmission system 100 includes a plurality of electronic devices 112, 114, 116, an authentication server 120 and a plurality of access servers 130, 140. In this embodiment, the verification server 120 can be communicatively coupled to the plurality of electronic devices 112 - 116 through the Internet 900 , and the access servers 130 , 140 can be communicatively coupled to the plurality of electronic devices 112 - 116 through the Internet 900 .

Next, FIG. 2 is a schematic diagram of a data transmission system 200 according to the second embodiment of the present invention; compared with the data transmission system 100 in FIG. 1, the data transmission system 200 in this figure does not include multiple access servers 130 , 140; In this embodiment, the verification server 220 can be communicatively coupled to a plurality of electronic devices 212-216 through the Internet 900 and the hub 250; in addition, the plurality of electronic devices 212-216 are communicatively coupled to each other through the hub 250, In other words, the plurality of electronic devices 212-216 can be coupled via a local area network (local lan), but the present invention is not limited thereto.

1 and 2, a plurality of electronic devices 112-116 or 212-216 can be coupled through the Internet (Internet) or local area network (local lan), and each electronic device 112-116 Or 212-216 can each install a group application program (application, APP), and the user utilizes these electronic devices 112-116 or 212-216 to install the group application program for data exchange, wherein each has an installation group All electronic devices with integrated application programs have a set of account numbers and passwords for identity verification.

Therefore, the user can log in multiple different electronic devices at the same time through a set of account passwords. When the user logs in the account password, each electronic device will automatically connect to the verification server 120 for identity verification. After the electronic device 112-116 passes the identity verification, the data transmission group 110 or 210 can be formed between the electronic device 112-116 or 212-216 through (Internet) or local area network (local lan). This is the limit.

In operation, the data transmission mode in the data transmission group 110 or 210 is as follows: please refer to FIG. 1 and FIG. Send its internal files (including: video files, photo files or any other types of physical files...) to any other electronic device in the same data transmission group 110 or 210; at the same time, any one in the data transmission The electronic devices in the group 110 or 210 can also be receivers, and can receive files sent from other electronic devices in the same data transmission group 110 or 210 . The present invention can perform data transmission and sharing actions between different electronic devices through group sharing.

Here, the multiple electronic devices 112 - 116 described above are implemented by being coupled through the Internet. Please refer to FIG. 1. First, the electronic devices 112-116 must first connect to the verification server 120 for identity verification. After passing the verification, the electronic devices 112-116 become a data transmission group 110, wherein the electronic device 116 can be used as a receiving end. By forwarding the command from the authentication server 120, requesting metadata to the remaining electronic devices (for example: electronic devices 112, 114) in the data transmission group 110, the remaining electronic devices (for example: electronic devices 112, 114) can share their internal Entity files (image files, photo files, music files, etc.) are converted into metadata (meta data), and then the metadata is sent to the access server 130, and the receiving end (for example: electronic device 116) can obtain it from the access server 130 Metadata sent by the remaining electronic devices (eg, the electronic devices 112, 114).

In this embodiment, the receiving end (for example: electronic device 116) can obtain the metadata, and the user can view the rest of the electronic devices (for example: electronic devices 112, 114) on the screen through the receiving end (for example: electronic device 116) The metadata of the entity files to be shared, which is the descriptive data associated with these entity files.

In this embodiment, one of the remaining electronic devices (for example: electronic device 112, 114) can be used as the transmitting end. In fact, the metadata includes: specifying the transmitting end (for example: electronic device 112) to transmit the entity file to The access server 130, therefore, when the sending end (for example: electronic device 112) receives the request sent by the receiving end, the sending end (for example: electronic device 112) will first upload the physical file to the access server 130, and then through The access server 130 transmits the physical file to the receiving end (electronic device 116); through this transmission method, the user can use multiple electronic devices at the same time, and can automatically connect through the group application program (APP), and can Easily transfer and share physical files (including: image files, photo files or music files, etc.) between electronic devices.

Secondly, the physical files are only transmitted through the designated access servers 130 and 140 in the data transmission system 100. When the receiving end receives the physical files, the access servers 130 and 140 will not keep these physical files, but will Delete it yourself to avoid data leakage.

In this embodiment, the data transmission system 100 can use free cloud hard drives as the access servers 130, 140, thereby achieving cost savings. The cloud drive can be Google Drive, Dropbox, SugarSync, SkyDrive, etc. However, the types of files that can be stored in various cloud drives are limited. Therefore, the transmitting end of the data transmission system 100 can be used to modify the extension of the entity file, so that the entity The file type of the file can be stored by the access server 130 , 140 .

When the present invention transmits files, it will provide user suggestions based on the characteristics of the files or the size of the cloud space, allowing the user to select a current best access server for uploading. This mechanism is as follows: the data transmission system 100 It also includes a second access server 140, which is communicatively coupled to the electronic devices 112-116, wherein the transmitting end (for example: the electronic device 112) will upload according to the allowable upload capacity of the access server 130 and another access server 140, upload speed or remaining capacity, to determine the transmission of physical files to the access server 130 or another access server 140; the so-called allowable upload capacity is the capacity that the access server can provide the user, for example, when Dropbox is used as the access server, it provides The user's capacity is 2GB, and this 2GB is called the allowable upload capacity; the so-called upload speed refers to the speed at which the transmitting end uploads the physical file to the access server. The so-called remaining capacity refers to the 2GB capacity provided to the user, when 1GB is used, the remaining 1GB is called the remaining capacity.

Through the mechanism provided by the embodiment of the present invention, the physical file can be uploaded to the best cloud server, thereby facilitating the user to upload the file.

Here, the implementation manner of coupling the multiple electronic devices 212-216 through a local area network (local lan) will continue to be introduced. Please refer to FIG. 2, in the second embodiment of the present invention, the electronic device 212 and the electronic device 216 can be coupled through a local area network, which is different from the electronic devices 112-116 coupled through the Internet in that , the sending end (such as the electronic device 212) in the data transmission group 210 will directly transmit the physical file to the receiving end (such as the electronic device 216), without going through the access servers 130, 140, therefore, in this embodiment In this case, the data transmission system 200 does not need to access the servers 130, 140.

In addition to the file sharing method shown in FIG. 1 , the data transmission system of the present invention may also have another different file sharing and transmission method. To introduce this different file sharing and transmission methods in detail, please refer to FIG. The electronic device (for example: electronic device 216) acts as the connection receiving end, and the online receiving end sends a two-way connection request to the remaining electronic devices (for example: electronic device 212) in the data transmission group 210 through the authentication server 220. When the remaining electronic devices receive After the request, a two-way connection is established with the connection receiving end. At this time, the connection receiving end can request metadata from the remaining electronic devices through the two-way connection. In this way, the user can watch the remaining electronic devices on the receiving end through the receiving end The file information (image file, photo file or music file, etc.) to be shared by the device (for example: electronic device 212), but the content seen is not the file information of the entity, but the metadata associated with these entity files.

Subsequently, the rest of the electronic devices (for example, the electronic device 212 ) act as the transmitting end, and the online receiving end requests the entity file related to the metadata from the transmitting end according to the metadata, and the transmitting end transmits the entity file to the online receiving end.

In this embodiment, when the data transmission system 200 operates on the Windows operating system, the operating system will limit the transmission of data. For example, if data transmission is to be performed between the server and the client, when the client application program operates In the background mode, the server sends the entity file to the client, and the client will wake up for subsequent data processing. However, when the client wants to transmit the physical file to the server, and the server's application program operates in the background mode, the server will not be woken up, resulting in failure of the client's process of transmitting the physical file.

In order to solve the above problems, the present invention proposes that the transmitting end transmits the physical file to the online receiving end through a two-way connection mechanism; in detail, when the transmitting end establishes a first connection to the online receiving end to transmit the physical file to the online receiving end, The connection receiving end establishes a second connection to the transmitting end, and the first connection and the second connection serve as opposite and unidirectional data, forming a circular data flow cycle. In this way, the problem that the data transmission system 200 is limited in operating under the Windows operating system can be improved, and it can be ensured that when the application program used by the transmitting end or the receiving end is in the background mode, it can be accessed after receiving data. wake.

The above-mentioned embodiments respectively introduce the implementation methods unique to each of the multiple electronic devices 112-116 or 212-216 to be coupled through the Internet (Internet) or a local area network (local lan), and the following embodiments illustrate It is a general introduction to the common implementation of the two.

In the common implementation of multiple electronic devices coupled through the Internet (Internet) and local area network (local lan), in fact, the content of metadata can include file name, directory name, file time, file size, tag , album name, geographic coordinates, thumbnail, and screenshot; in addition, the file time can be the creation time or the latest modification time of the file, for example, for a picture file, the file time can be the The time the picture was taken. The album name refers to the name of the music album to which the music file belongs. Geographical coordinates can be longitude and latitude. For example, some cameras can add latitude and longitude information in the pictures taken; the thumbnail refers to the thumbnail of the picture file, and the screenshot refers to the screenshot of the video file.

The metadata can be displayed on the screen of the electronic device. When displaying the metadata, it can be displayed in a paged manner according to the type of the file (for example, the metadata of the four files of pictures, videos, music and documents can be respectively used Each metadata can be displayed on a separate page), and all the metadata can be combined and displayed simultaneously on the same page; these metadata can represent the description and description of the entity files to which they belong, and can be browsed by the user of the electronic device.

In one embodiment, after the receiving end obtains the metadata, the rest of the electronic device can be used as the transmitting end, and the receiving end can ask the transmitting end for entity files related to the metadata according to the metadata; moreover, the receiving end can be used for searching Metadata, the receiving end can compare the search conditions entered by the user with the metadata to search for matching entity files, and prompt the entity files that meet the search, and the receiving end requests the sending end for the entity files that meet the search; the user can receive The end inputs the file name, and then the receiving end compares the metadata of the file with the file name input by the user, and searches for a physical file whose name matches.

In addition, the user can also input a directory name or input label information at the receiving end, and then the receiving end compares the metadata of the file with the directory name or the input label information entered by the user, and searches for files containing the directory name. Or a physical file with this volume label information.

In addition, the user can also search for all the music files of this album by inputting the album name at the receiving end; moreover, the user can also select the thumbnail or screenshot in the metadata of the picture file or video file through the receiving end One of the objects, such as a human face; then the receiving end can compare the thumbnail with the screenshot and the object selected by the user, and search out the picture file and/or video file including the object.

In addition, some cameras can add geographic coordinates, such as longitude and latitude information, to the pictures taken; the place name search is through the conversion between geographic coordinates and address information, allowing users to search for photos taken at a certain location by inputting address information Image files; currently there are some services available to the public that can convert geographic coordinates and address information, such as the Google map application programming interface (Google map API for short); the address information can be a city and a street address, such as "Roosevelt Road Section 2, Taipei City"; the address information may also be a famous landmark, such as "Taipei 101 Building".

There are two ways to search for place names. The first is that the user inputs address information at the receiving end, and the receiving end converts the address information into geographical coordinates, such as longitude and latitude, and searches out the The geographic coordinates contained in the file itself conform to the geographic coordinates generated by the transformation; the receiving end can estimate the distance between the geographic coordinates generated by the transformation and the geographic coordinates contained in an image file, if the distance is less than a threshold value, the receiving end can determine that the two sets of geographic coordinates are consistent.

The second type of place name search is that the user inputs address information at the receiving end, and the receiving end converts the geographical coordinates of each picture file in the metadata into address information, and searches out the location information of the file itself in the user's picture file. A file where the address information matches the address information entered by the user.

Next, the user inputs time information at the receiving end, and the receiving end converts the time information into a corresponding time or time interval, and in the metadata, finds out that the file time matches the time or time interval generated by the conversion files; for example, if the time information entered by the user is "Christmas", it can be converted to the time of December 25th, and the picture file or video file taken on December 25th can be searched; if the time information entered by the user If it is "spring", it can be converted to the time interval from March 1 to May 31, and the image files or video files taken during this time interval can be searched.

The above-mentioned file name search, directory name search, label search, album search, image search, place name search, and time search can be used in combination to provide a more precise search; for example, use "spring" for time search, no matter which The pictures taken in the spring of 2008 will be searched. If you use "2008 Spring Taipei" to search, you will only find the pictures taken in Taipei in the spring of 2008.

FIG. 3 is a schematic diagram of a transmission process of a data transmission method 300 according to a third embodiment of the present invention, wherein the data transmission method 300 can be applied to the data transmission system 100, 200, wherein the data transmission system 100, 200 The internal components have been introduced in the above description and will not be repeated here.

As shown in FIG. 3 , the data transmission method 300 includes the following steps. First, please refer to step 310. The verification server 120, 220 performs identity verification on these electronic devices 112-116, 212-216 of the data transmission system 100, 200, and by The verified electronic devices 112-116, 212-216 form a data transmission group 110, 210, and the electronic devices 112-116, 212-216 share internal metadata with each other.

Then, please refer to step 320, when any electronic device requires the entity file according to the metadata, it can be determined by any electronic device that the data transmission system 100, 200 operates on the Internet or a local area network; then, in step 330, when it is determined When the data transmission system 100 operates on the Internet, one of the electronic devices of the data transmission group 110 acts as the transmitting end, and uploads the entity file related to the metadata to one of the multiple access servers 130, 140, and the data transmission group 110 The rest of the electronic devices serve as receiving ends, and download the entity files via one of the access servers 130 and 140 .

In addition, in step 340, when it is determined that the data transmission system 200 is operating in a local area network, the transmitting end directly transmits the entity file related to the metadata to the receiving end; The method has been mentioned in the discussion of FIG. 1 and FIG. 2 , and for the sake of concise description of the present invention, details are not repeated here.

As mentioned above, through the data transmission method 300 , it is possible to quickly determine which network architecture the data transmission system is operating on, and adaptively provide a proper data transmission method for the data transmission system to facilitate data transmission for users.

FIG. 4 is a schematic diagram of a transmission process of a data transmission method according to a fourth embodiment of the present invention; FIG. 5 is a schematic diagram of a reception process of a data transmission method according to a fifth embodiment of the present invention.

In order to make the data transmission method of the embodiment of the present invention easier to understand, Fig. 1 and Fig. 4 are exemplarily introduced together here; first, the transmitting end provides data (step 410), and the data includes basic data; subsequently, the verification server Identity verification is performed on a plurality of electronic devices in the data transmission system, and the verified electronic devices form a data transmission group (step 415 ). The transmitting end divides the data into multiple data segments, calculates a checksum of the data segments (step 420 ), and encrypts the data segments (step 430 ).

Next, it is determined that the data transmission system is operating on the Internet or a local area network (step 440); when the data transmission system is operating on the Internet, the sending end of the data transmission group sends the entity file segment to the access server (step 450). What needs to be explained here is that when uploading files to the access server, there is no appropriate mechanism to inform the user how to choose an optimal access server to upload files when multiple access servers exist at the same time. File upload is carried out, whereby the present invention provides a mechanism to solve said inconvenience, which mechanism is as follows. When there are multiple access servers, the sending end of the data transmission group will decide to send the physical file to one of the multiple access servers according to the allowable upload capacity, upload speed or remaining capacity of the multiple access servers; In this way, through the mechanism provided by the embodiment of the present invention, the physical file can be uploaded to the best access server, thereby facilitating the user to upload the file.

In addition, when the data transmission system operates on a local area network, the transmitting end directly transmits the physical file segment to the receiving end (step 460); furthermore, it is determined whether the encrypted data segment has been transmitted (step 470). If the encrypted data segment has been transmitted, it is determined whether there is an error in the encrypted data segment (step 480); if the encrypted data segment has not been transmitted, then return to step 420.

Continuing with step 480, when one of the encrypted data segments is wrong, the wrong data segment is retransmitted (step 490); and when none of the encrypted data segments is error-free, the transmission process of the data transmission method is ended.

In order to make the data transmission method of the embodiment of the present invention easier to understand, Figure 1 and Figure 5 are exemplarily introduced here together; first, the receiving end will receive the basic data of the data (step 510); then, determine the operation of the data transmission system On the Internet or local area network (step 520); if the data transmission system operates on the Internet, the access server sends the entity file to the receiving end of the data transmission group (step 522); if the data transmission system operates on the local area network, the receiving end receives Data segment (step 526); in one embodiment, the transmitting end uploads data to the access server, and the receiving end downloads data from the access server, and when the receiving end downloads data from the access server, the access server deletes the data ( Step 524).

Furthermore, the receiving end decrypts the encrypted data segment (step 530); then, judges whether the checksum of the encrypted data segment is correct (step 540); if the encrypted data segment checksum is incorrect, then Re-download the incorrect data segment (step 542); if the checksum of the encrypted data segment is correct, write the encrypted data segment to the receiving end (step 544).

Subsequently, it is judged whether the encrypted data segment has been received (step 550); if the encrypted data segment has been received, it is judged whether the data transmission is completed (step 552); if the encrypted data segment has not been received yet, then return to step 520.

Continuing with step 552, if the data transmission has not been completed, return to step 520; if the data transmission has been completed, then end the receiving process of the data transmission method.

The above-mentioned data transmission methods can all be implemented by software, hardware and/or firmware; If flexibility is the primary consideration, software can basically be used as the main choice; or, software, hardware and firmware can be used at the same time to work together; In order to limit the present invention, those skilled in the art can make flexible design according to the needs at that time.

Furthermore, those of ordinary skill in the art should understand that the steps in the data transmission method are named according to their functions, just to make the technology of the present invention more obvious and understandable, not to limit these steps. Integrating each step into the same step or splitting it into multiple steps, or replacing any step with another step for execution should all belong to the embodiments of the present disclosure.

In summary, compared with the prior art, the technical solution of the present invention has obvious advantages and beneficial effects. The data transmission system transmission method proposed by the present invention can solve the problem that the file provider of the file transfer protocol needs to disclose the fixed Internet address; in addition, in the process of transmission, compared with the traditional file transfer protocol (FTP), it can be Multiple electronic devices are automatically connected through grouped applications, providing users with a more intuitive experience; and users do not need to completely store physical files in cloud storage space, thereby reducing the possibility of data leakage Sex; You can also use the free cloud hard disk as an access server, which can save costs.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore The scope of protection of the present invention should be defined by the claims.

Claims (29)

1. a data transmission system, is characterized in that, comprising:

Multiple electronic installations;

Authentication server, coupled in communication is in described these electronic installations, wherein said these electronic installations by described authentication server to carry out authentication, and by forming transfer of data group by described these electronic installations of checking, one of them electronic installation in wherein said transfer of data group is as receiving terminal, described receiving terminal sends commands to described authentication server, and described authentication server receives and transmit the excess electron device in the extremely described transfer of data of described order group; And

At least one access server, coupled in communication is in described these electronic installations, wherein in the time that described these excess electron devices receive described order, output metadata is to described access server, described receiving terminal can be obtained described metadata by described access server, wherein said these excess electron devices one of them as transmission end, described receiving terminal requires the entity file relevant to described metadata according to described metadata to described transmission end, and by transmitting described entity file to described access server in described transmission end, and transmit described entity file to described receiving terminal by described access server.

2. data transmission system according to claim 1, is characterized in that, described entity file is uploaded to described access server in wherein said transmission end, and downloads described entity file by described receiving terminal from described access server.

3. data transmission system according to claim 2, is characterized in that, wherein, when described receiving terminal is downloaded described entity file from described access server and completed, described access server is deleted described entity file.

4. data transmission system according to claim 1, is characterized in that, wherein said transmission end is by revising the extension name of described entity file, makes the file type of described entity file can be stored by described access server.

5. data transmission system according to claim 1, it is characterized in that, wherein said receiving terminal output requires order to described authentication server, described authentication server receives and transmits described requirement order to described transmission end, described entity file is transmitted to described access server in described transmission end, exports described entity file to described receiving terminal by described access server.

6. data transmission system according to claim 1, is characterized in that, wherein said meta-data pack contains at least one in filename, directory name, document time, file size, label, album name, geographical coordinate, contract drawing and sectional drawing.

7. data transmission system according to claim 6, it is characterized in that, wherein said receiving terminal is also searched described metadata by described access server, and point out the described entity file that meets described search, required to meet the described entity file of described search to described transmission end by described receiving terminal.

8. data transmission system according to claim 6, it is characterized in that, wherein said entity file is picture or film, choose an object among described contract drawing or described sectional drawing by described receiving terminal, described receiving terminal also comprises the described entity file of described object by described access server search.

9. data transmission system according to claim 6, it is characterized in that, wherein said entity file is picture, by described receiving terminal Input Address information, and by described receiving terminal, described address information is converted to a geographical coordinate, described receiving terminal also search described metadata by described access server among geographical coordinate meet described geographical coordinate person, and require corresponding described entity file according to the described metadata that meets described geographical coordinate to described transmission end.

10. data transmission system according to claim 6, it is characterized in that, wherein input a temporal information by described receiving terminal, and by described receiving terminal, described temporal information is converted to a time or a time interval, described receiving terminal also search described metadata by described access server among document time meet described time or described time interval person, and require corresponding described entity file according to the described metadata that meets described time or described time interval to described transmission end.

11. data transmission systems according to claim 1, it is characterized in that, also comprise: the second access server, coupled in communication is in described these electronic installations, wherein said transmission end allows the capacity of uploading, uploading speed or residual capacity according to described access server and described the second access server, to determine transmitting described entity file to described access server or described the second access server.

12. 1 kinds of data transmission systems, is characterized in that, comprising:

Multiple electronic installations; And

Authentication server, coupled in communication is in described these electronic installations, wherein said these electronic installations by described authentication server to carry out authentication, and by forming transfer of data group by described these electronic installations of checking;

An electronic installation in wherein said transfer of data group is as online receiving terminal, described online receiving terminal sends remaining electronic installation in the extremely described transfer of data of two-way online requirement group by authentication server, when described these excess electron devices receive after described requirement, set up two-way online with described online receiving terminal, described online receiving terminal can two-wayly onlinely be obtained metadata to described these remaining electronic installation requirements by described, described these excess electron devices one of them as transmission end, described receiving terminal requires the entity file relevant to described metadata according to described metadata to described transmission end, and transmit described entity file to described receiving terminal by described transmission end.

13. data transmission systems according to claim 12, it is characterized in that, wherein set up first when described transmission end and be online to described receiving terminal, to transmit described entity file when the described receiving terminal, described receiving terminal is set up second and is online to described transmission end, described the first online and data that described the second online conduct is contrary and unidirectional, form the data flow circulation of circulation.

14. data transmission systems according to claim 12, is characterized in that, wherein said meta-data pack containing filename, directory name, document time, file size, label, album name, geographical coordinate, contract drawing and sectional drawing wherein at least one.

15. data transmission systems according to claim 14, it is characterized in that, wherein said receiving terminal is also in order to search described metadata, and prompting meets the described entity file of described search, required to meet the described entity file of described search by described receiving terminal to described transmission end.

16. data transmission systems according to claim 14, it is characterized in that, wherein said entity file is picture or film, chooses an object among described contract drawing or described sectional drawing by described receiving terminal, and described receiving terminal is also in order to search the described entity file that comprises described object.

17. data transmission systems according to claim 14, it is characterized in that, wherein said entity file is picture, by described receiving terminal Input Address information, and by described receiving terminal, described address information is converted to geographical coordinate, described receiving terminal also meets described geographical coordinate person in order to geographical coordinate among searching described metadata, and requires corresponding described entity file according to the described metadata that meets described geographical coordinate to described transmission end.

18. data transmission systems according to claim 14, it is characterized in that, wherein by described receiving terminal information input time, and by described receiving terminal, described temporal information is converted to time or time interval, described receiving terminal also meets described time or described time interval person in order to document time among searching described metadata, and requires corresponding described entity file according to the described metadata that meets described time or described time interval to described transmission end.

19. 1 kinds of data transmission methods, be applied to the data transmission system described in any one in claim 1 to 18, it is characterized in that, described data transmission system comprises multiple electronic installations, authentication server and at least one access server, and wherein said data transmission method comprises:

Authentication server carries out authentication to described these electronic installations of described data transmission system, and by forming transfer of data group by described these electronic installations of checking, described these electronic installations are shared inner metadata each other;

In the time that arbitrary electronic installation requires entity file according to described metadata, judge that described data transmission system operates in the Internet or LAN;

In the time that described data transmission system operates in described the Internet, the electronic installation of described transfer of data group is as transmission end, and upload the entity file relevant to described metadata to described access server, the excess electron device of described transfer of data group, as receiving terminal, is downloaded described entity file via described access server; And

In the time that described data transmission system operates in described LAN, the entity file relevant to described metadata directly transmitted to described receiving terminal in described transmission end.

20. data transmission methods according to claim 19, it is characterized in that, the described access server of described data to described transfer of data group transmitted in the described transmission end of wherein said transfer of data group, and described access server transmits the step of the described receiving terminal of the extremely described transfer of data of described data group, comprising:

Described data are uploaded to described access server in described transmission end, and described receiving terminal is downloaded described data from described access server.

21. data transmission methods according to claim 20, is characterized in that, wherein, when described receiving terminal is downloaded described data from described access server and completed, described access server is deleted described data.

22. data transmission methods according to claim 20, is characterized in that, wherein said transmission end is by revising the extension name of described data, make the file type of described data can be stored by described access server.

23. data transmission methods according to claim 19, is characterized in that, the step of described data to described receiving terminal transmitted in wherein said transmission end, comprises: described data are transmitted to described receiving terminal by two-way online mechanism in described transmission end.

24. data transmission methods according to claim 19, is characterized in that, wherein when described transmission end is set up first and is online to described receiving terminal, when transmitting described data to described receiving terminal, described receiving terminal is set up second and is online to described transmission end.

25. data transmission methods according to claim 19, is characterized in that, the wherein said step that described data are provided comprises:

Described Data Segmentation is become to multiple data slots, and calculate described these data slots check and; And

Described these data slots are encrypted.

26. data transmission methods according to claim 25, it is characterized in that, the step that wherein operates in described the Internet when described data transmission system comprises: in the time that described data transmission system operates in described the Internet, described these data slots are transmitted to described access server in described transmission end, and described access server transmits described these data slots to described receiving terminal;

The step that wherein operates in described LAN when described data transmission system comprises: in the time that described data transmission system operates in described LAN, described these data slots are transmitted to described receiving terminal in described transmission end.

27. data transmission methods according to claim 26, is characterized in that, wherein, when described receiving terminal receives after described data, also comprise:

Whether described these the encrypted data slots of judgement have transmitted;

If described these encrypted data slots have transmitted, whether described these the encrypted data slots of judgement there is mistake; And

If described these one of them mistakes of encrypted data slot, the data slot of the described mistake that retransfers.

28. data transmission methods according to claim 27, is characterized in that, also comprise:

Described these encrypted data slots are decrypted;

Described in described these the encrypted data slots of judgement, check with whether correct; And

If check described in described these encrypted data slots with incorrect, again download described incorrect data slot.

29. data transmission methods according to claim 28, is characterized in that, also comprise:

If check described in described these encrypted data slots and correctly, described these encrypted data slots write to described receiving terminal;

Whether described these the encrypted data slots of judgement finish receiving; And

If described these encrypted data slots finish receiving, judge whether described data are transmitted.

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