CN101146207B - Construction method and network of radio display network - Google Patents
Construction method and network of radio display network Download PDFInfo
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- CN101146207B CN101146207B CN200610112959XA CN200610112959A CN101146207B CN 101146207 B CN101146207 B CN 101146207B CN 200610112959X A CN200610112959X A CN 200610112959XA CN 200610112959 A CN200610112959 A CN 200610112959A CN 101146207 B CN101146207 B CN 101146207B
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Abstract
A construction method of a wireless display network and a network are disclosed. The method comprises the steps as follows: broadcasting the service set identifier (SSID) of wireless display segment and network configuration information distributed by the wireless display terminal to be networked in a beacon frame form in a video source; receiving the beacon frame at a wireless display terminal to be networked, and performing the network configuration according to the SSID and the network configuration information contained in the received beacon frame, to form the wireless network with the video source. The invention declares one-to-many requests via a beacon pack and allows a notebook and a target wireless projector to automatically change the network configuration and thus to rapidly construct one-to-many data transmission network. The method can be used for not only the one-to-many projection between the notebook and the projector but also the networking among other video sources and a plurality of wireless display terminals.
Description
Technical field
The present invention relates to the networking technology in wireless demonstration field, be specifically related to a kind of method and corresponding network a video source and a plurality of wireless display terminal composition networks such as projector.
Background technology
In the convention place, often use many projectors to play the content of same speech draft.Wireless projector is an important trend of projector's development, supports that therefore a notebook is the major issue that the wireless display technical development must solve to the technology of many wireless projectors projection simultaneously.
At the demand, patent documentation 1 (EP1427143) proposes in advance many projectors and Duo Tai notebook to be connected in the same network, this network needs a moderator, notebook to the application projection is arbitrated, thereby reach view data is sent to the purpose that many projectors show from notebook.The subject matter of this method be with projector and notebook be connected in the same network be a pretty troublesome thing, particularly wireless projector this do not have the equipment of fine UI, revise its SSID and the suitable difficulty in IP address.
In addition, patent documentation 2 (US2003098819) uses a wireless adapter that multi-channel video output is arranged, and each video output of this adapter is connected with a projector.Notebook is connected with this adapter by wireless, and image is sent to this adapter, exports to a plurality of projectors by adapter and goes to show.Patent documentation 2 be applicable to common wired projector be transformed into can the one-to-many projection the wireless display system, for wireless projector, increase so adapter, not only waste Radio Resource but also increased cost.
Though present solution can reach the purpose of one-to-many projection or demonstration, the method for dealing with problems has all been walked around this problem of wireless networking and has been carried out, so the availability of these methods is not enough.
Summary of the invention
In view of the problems of the prior art, finished the present invention.The objective of the invention is to propose a kind of can be with the method and the corresponding network of a video source and a plurality of wireless display terminal networkings.
In one aspect of the invention, provide and planted a video source and at least two methods of wanting the wireless display terminal composition network of networking, comprise step: in video source, specifying a wireless display terminal in described at least two wireless display terminal of wanting networking is main wireless display terminal; Dispose described video source to be connected setting up network between described video source and the described main wireless display terminal by network configuration information with described main wireless display terminal; Send the described title of wanting the wireless display terminal of networking from described video source to described main wireless display terminal; Described main wireless display terminal is based on the described title of wanting the wireless display terminal of networking, with the form radio network configuration information of beacon frame; In other wireless display terminal, receive described beacon frame, according to the network configuration information in the beacon frame that is received, carry out network configuration operations, to form wireless network with described video source.
In addition, before given step, the wireless display terminal around the search video source, and the wireless display terminal that selection will be carried out networking from the wireless display terminal of search.
In addition, described network configuration information comprises: carry out the title of wireless display terminal of networking and the service set identifier and the network address information of the wireless demonstration network segment.
In addition, described wireless display terminal is a wireless projector.
In another aspect of this invention, a kind of wireless network of wanting the wireless display terminal of networking to form by a video source and at least two has been proposed, want the wireless display terminal of networking to comprise that a main wireless display terminal and at least one are from wireless display terminal for described at least two, wherein, described video source comprises: first communicator is used to receive the network configuration information of described main wireless display terminal; First control device is used for coming described video source is carried out network configuration according to described network configuration information, to be connected setting up network between described video source and the described main wireless display terminal; Wherein said first communicator sends the described title of wanting the wireless display terminal of networking to described main wireless display terminal; Described main wireless display terminal comprises: the second communication device receives the described title of wanting the wireless display terminal of networking; The networking commands generating apparatus based on the described title of wanting the wireless display terminal of networking, generates networking commands by the service set identifier of network of radio display and the network address are written in the beacon frame; Described at least one comprise from each of wireless display terminal: third communication device is used to receive described networking commands; Resolver is used for obtaining the described service set identifier and the network address from described networking commands parsing; Control device is resolved the described service set identifier and the network address that obtain based on resolver and is come self is carried out network configuration, to form wireless network with described video source.
Adopt such scheme of the present invention, can be fast, simply video source and projector are formed network, be user-friendly to.As mentioned above, declare one-to-many projection request and allow notebook and target wireless projector change network configuration automatically by beacon package, the multidata that partners rapidly transmission network.This method not only can be used for the one-to-many projection between notebook and the projector, also is applicable to the networking between other video source and a plurality of wireless display terminal.
Description of drawings
From the detailed description below in conjunction with accompanying drawing, above-mentioned feature and advantage of the present invention will be more obvious, wherein:
Fig. 1 shows the structured flowchart according to the video source server of first embodiment of the invention;
Fig. 2 shows the structured flowchart according to the wireless display terminal of first embodiment of the invention;
Fig. 3 and Fig. 4 show the flow chart according to the network construction method of first embodiment of the invention;
Fig. 5 shows the structured flowchart according to the video source server of second embodiment of the invention;
Fig. 6 shows the structured flowchart according to the wireless display terminal of second embodiment of the invention; And
Fig. 7 and Fig. 8 show the flow chart according to the network construction method of second embodiment of the invention.
Embodiment
Below, describe preferred implementation of the present invention with reference to the accompanying drawings in detail.In the accompanying drawings, though be shown in the different accompanying drawings, identical Reference numeral is used to represent identical or similar assembly.For clarity and conciseness, be included in here known function and the detailed description of structure will be omitted, otherwise they will make theme of the present invention unclear.
[first execution mode]
Fig. 1 shows the structured flowchart of the video source server of first embodiment of the invention.
As shown in Figure 1, the video source server 100 such as notebook comprise server communication unit 110 such as wireless network card, be used for controlling the whole video source server controls unit 120, be used for memory search the wireless display terminal for the treatment of networking title server storage unit 130 and be used for generating the networking commands generation unit 140 of networking commands by the expansion IE field that SSID and IP address with network of radio display are written to beacon frame.In addition, video source 100 also possesses the ability of playing a series of pictures, can be with video content by server communication unit, and for example wireless network card transmits on network.
According to embodiments of the invention, send the information relevant with networking by beacon (Beacon) frame as the mac frame of 802.11 networks.According to 802.11 standards, 802.11 mac frame comprises following three substances: 1) MAC head (MAC header) comprises frame control, Duration/ID, the address, control informations such as sequence 2) frame (Frame body), the data message of certain type of variable-length; 3) Frame Check Sequence (FCS, Frame check sequence), IEEE32-bit cyclic check code (CRC).
In addition, mac frame divides following three classes usually: control frame, management frames and Frame.The Beacon frame is a kind of of management frames, comprises several fixed-length fields in this frame, as time stamp (Time stamp), and beacon interval (Beacon interval), ability information (Capability information) etc.This frame also comprises several variable length, i.e. information unit (INFORMATION ELEMENT:IE) field.According to 802.11 agreements, comprise SSID (service set identifier) and other some ID among the ID of IE field.SSID can be used for representing the name of a network, and any SSID that will insert the equipment of this wireless network must be consistent with this SSID.
802.11b afterwards, 802.11g expand above-mentioned ID table again, have used the ID of some reservations.As general application, can add the IE field of oneself, send own privately owned information, but using still untapped at present ID, this IE identifies, conflict with the IE field of standard code avoiding.
Fig. 2 shows the structured flowchart according to the wireless display terminal of first embodiment of the invention.
As shown in Figure 2, the wireless display terminal 200 according to first execution mode comprises: be used for carrying out with the video source server terminal communication unit 210 of radio communication, for example wireless network card; Control the Terminal Control Element 220 of whole wireless display terminal 200, and the resolution unit 430 that is used for parsing from the beacon frame that receives SSID and IP address.Nature, wireless display terminal 200 also possesses the video playback ability, so that after network construction, plays the video content that receives by network.
Be that example is set forth the detailed process that notebook and two projectors wherein set up a pair of two radio projection network with a notebook (video server) and three wireless projectors (hereinafter claiming the A of projector, the B of projector and the C of projector) below.
If the A of projector, the MAC Address of B of projector and the C of projector is respectively 000000000001 (16 system), 000000000002 (16 system), 000000000003 (16 system), generate SSID according to its MAC Address, can guarantee that SSID is unique, simultaneously and add the field of wireless projector sign in its front, such as this field can be LENOVO-PRJD-, therefore the SSID of the A of projector is LENOVO-PRJD-000000000001, the SSID of the B of projector is LENOVO-PRJD-000000000002, and the SSID of the C of projector is LENOVO-PRJD-000000000003; After SSID was set, the IP that every projector is provided with oneself again was a fixedly IP, as 192.168.1.1.
Fig. 3 and Fig. 4 show respectively in video source server side and the performed action of wireless display terminal side.
As shown in Figure 3, at step S110, the beacon frame that wireless device sent around server controls unit 120 Control Server communication units receive obtains available wireless display terminal tabulation so that search for available wireless display terminal, is stored in the server storage unit 130.For example, notebook is by available wireless network around the search, obtain the wireless network ssid list, and know current 3 wireless projectors that have according to the prefix of SSID, its SSID is respectively LENOVO-PRJD-000000000001, LENOVO-PRJD-000000000002, LENOVO-PRJD-000000000003.
At step S120, the projector that need carry out projection operation is selected in server controls unit 120 from the tabulation of server storage unit 130, it is the projector that will insert radio projection network that example is selected the A of projector, the B of two SSID:LENOVO-PRJD-000000000001 and LENOVO-PRJD-000000000002 correspondence, specifying the network SSID that is used for the wireless display networking simultaneously is LENOVO-WIRELESS-PROJECTOR, and the IP of A of projector and the B of projector is respectively 192.168.1.2 and 192.168.1.3.Then, sent as the beacon frame of networking commands and by server communication unit 110 according to above-mentioned SSID and the generation of IP address by networking commands generation unit 140, wherein, the form of beacon frame is as giving a definition:
Next, at step S 140, server controls unit 120 is configured to above-mentioned LENOVO-WIRELESS-PROJECTOR with the SSID of self, and its own IP address is configured in the network segment of above-mentioned network of radio display, for example 192.168.1.1.
Then, if A of projector and the B of projector are configured to above-mentioned LENOVO-WIRELESS-PROJECTOR with the SSID of oneself, and in the above-mentioned network segment, then at step S150, video source 100 is set up network with each wireless display terminal and is connected with oneself IP address configuration.
As shown in Figure 4, at step S210, the SSID and the IP address of self wireless network are set such as the wireless display terminal 200 of A of projector and B, wherein being provided with of SSID can generate at random, can all be unique with the SSID that guarantees each wireless display terminal also according to being arranged to a field relevant with the self MAC address.
Then, at step S220, terminal control mechanism 220 operation beacon frame oracle listeners are with by terminal communication unit 210 received beacon frames.At step S230, terminal communication unit 230 received beacon frames are resolved the beacon frame that receives by resolution unit 230, and are judged whether it is valid wireless projection networking request.
For example, after the A of projector receives this networking commands, oneself SSID is made as LENOVO-WIRELESS-PROJECTOR, oneself IP address is made as 192.168.1.2.After the B of projector receives this networking commands, oneself SSID is made as LENOVO-WIRELESS-PROJECTOR, oneself IP address is made as 192.168.1.3.After the C of projector received this networking commands, resolving the MAC Address tabulation that is used for networking that obtains did not have to abandon this beacon frame with the Xiang Ze of self MAC matching addresses the beacon frame on the continuous monitoring wireless link.
At step S250, the Terminal Control Element 220 among A of projector and the B is provided with SSID and the IP address of self to the SSID and the IP address of resolving separately.
Like this, at step S260, notebook and the A of projector, B just are in the same network segment of consolidated network, and notebook knows the IP address of the A of projector, B, and notebook just can be set up wireless network with the A of projector, B and be connected, and send video data and carry out projection.
[second execution mode]
Fig. 5 shows the structured flowchart according to the video source server of second embodiment of the invention.Fig. 6 shows the structured flowchart according to the wireless display terminal of second embodiment of the invention.
As shown in Figure 5, the video source server 300 of second embodiment of the invention comprises: the server communication unit 310 such as wireless network card, be used to control the whole video source server server controls unit 320, be used for the server storage unit 330 of title of the wireless display terminal for the treatment of networking of memory search.In addition, video source server 300 also possesses the ability of playing a series of pictures, can be with video content by server communication unit, and for example wireless network card transmits on network.
As shown in Figure 6, the wireless display terminal 400 of second embodiment of the invention comprises: be used for carrying out with video source the terminal communication unit 410 of radio communication, for example wireless network card; Control the Terminal Control Element 420 of whole wireless display terminal 400; Be used for from the beacon frame that receives parse the resolution unit 430 of SSID and IP address and be used for by the expansion IE field that SSID and IP address with network of radio display are written to beacon frame generate networking commands networking commands generation unit 440.Nature, wireless display terminal 200 also possesses the video playback ability, so that after network construction, plays the video content that receives by network.
Fig. 7 and Fig. 8 show respectively in video source server side and the performed action of wireless display terminal side.
As shown in Figure 7, at step S310, the beacon frame that wireless device sent around server controls unit 120 Control Server communication units receive obtains available wireless display terminal tabulation so that search for available wireless display terminal, is stored in the server storage unit 130.For example, notebook is by available wireless network around the search, obtain the wireless network ssid list, and know current 3 wireless projectors that have according to the prefix of SSID, its SSID is respectively LENOVO-PRJD-000000000001, LENOVO-PRJD-000000000002, LENOVO-PRJD-000000000003.
At step S320, it is the projector that will insert radio projection network that the A of projector, the B of two SSID:LENOVO-PRJD-000000000001 and LENOVO-PRJD-000000000002 correspondence are selected wherein in server controls unit 320, specifying the A of projector simultaneously is main wireless projector, thereby the B of projector is from wireless projector.
Next, at step S330, the SSID of server controls unit 320 notebooks oneself is set to the same with the A of projector: LENOVO-PRJD-000000000001; And the IP that oneself is set is 192.168.1.2.Like this, at step S340, notebook is set up wireless network with the A of projector and is connected.
Then, at step S350, server controls unit 320 reads another MAC Address that is used for the B of projector of wireless display from server storage unit 330, issue the A of projector by server communication unit 310.
At step S360, principal view machine A waits for and finishes network configuration from the B of projector.If finished network configuration,, just between notebook and wireless display terminal, set up wireless network then at step S370 from the B of projector.
As shown in Figure 8, at step S410, the SSID and the IP address of self wireless network are set such as the wireless display terminal 200 of A of projector and B, wherein being provided with of SSID can generate at random, can all be unique with the SSID that guarantees each wireless display terminal also according to being arranged to a field relevant with the self MAC address.
Then, at step S420, terminal control mechanism 220 operation beacon frame oracle listeners are with by terminal communication unit 210 received beacon frames.At step S430, Terminal Control Element 220 judges whether to have set up wireless connections with notebook, if set up wireless connections, shows that then current projector is principal view machine A.Then, at step S440, principal view machine A receives the wireless display terminal tabulation of sending from notebook.
At step S450, the networking commands generation unit 440 of the A of projector generates the networking commands beacon frame in view of the above, and broadcasts on Radio Link, and the form of the beacon frame of this moment is as giving a definition:
If current projector is from the B of projector, then at step S460, terminal communication unit 230 received beacon frames of the B of projector are resolved the beacon frame that receives by resolution unit 230, and are judged whether it is valid wireless projection networking request.If valid wireless networking request, at step S490, behind this networking commands beacon frame, oneself SSID is made as LENOVO-PRJD-000000000001 from the B of projector, oneself IP address is made as 192.168.1.3.After the C of projector received this networking commands, resolving the MAC Address tabulation that is used for networking that obtains did not have to abandon this beacon frame with the Xiang Ze of self MAC matching addresses, continues the beacon frame on the monitoring wireless link.
Like this, notebook and the A of projector, B just are in the same network segment of consolidated network, and notebook knows the IP address of the B of projector, and after notebook and the B of projector set up wireless network and be connected, notebook just can send video data to the A of projector, B by wireless network carry out projection.
Top description only is used to realize embodiments of the present invention; it should be appreciated by those skilled in the art; the any modification or partial replacement that is not departing from the scope of the present invention; all should belong to claim of the present invention and come restricted portion; therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (5)
1. want the wireless display terminal of networking to form the methods of network a video source and at least two for one kind, comprise step:
In video source, specifying a wireless display terminal in described at least two wireless display terminal of wanting networking is main wireless display terminal;
Dispose described video source to be connected setting up network between described video source and the described main wireless display terminal by network configuration information with described main wireless display terminal;
Send the described title of wanting the wireless display terminal of networking from described video source to described main wireless display terminal;
Described main wireless display terminal is based on the described title of wanting the wireless display terminal of networking, with the form radio network configuration information of beacon frame;
In other wireless display terminal, receive described beacon frame, according to the network configuration information in the beacon frame that is received, carry out network configuration operations, to form wireless network with described video source.
2. the method for claim 1 is characterized in that, before given step, and the wireless display terminal around the search video source, and the wireless display terminal that selection will be carried out networking from the wireless display terminal of search.
3. the method for claim 1 is characterized in that, described network configuration information comprises: carry out the title of wireless display terminal of networking and the service set identifier and the network address information of the wireless demonstration network segment.
4. the method for claim 1 is characterized in that, described wireless display terminal is a wireless projector.
5. a wireless network of wanting the wireless display terminal of networking to form by a video source and at least two wants the wireless display terminal of networking to comprise that a main wireless display terminal and at least one are from wireless display terminal, wherein for described at least two
Described video source comprises:
First communicator is used to receive the network configuration information of described main wireless display terminal;
First control device is used for coming described video source is carried out network configuration according to described network configuration information, to be connected setting up network between described video source and the described main wireless display terminal;
Wherein said first communicator sends the described title of wanting the wireless display terminal of networking to described main wireless display terminal;
Described main wireless display terminal comprises:
The second communication device receives the described title of wanting the wireless display terminal of networking;
The networking commands generating apparatus based on the described title of wanting the wireless display terminal of networking, generates networking commands by the service set identifier of network of radio display and the network address are written in the beacon frame;
Described at least one comprise from each of wireless display terminal:
Third communication device is used to receive described networking commands;
Resolver is used for obtaining the described service set identifier and the network address from described networking commands parsing;
Control device is resolved the described service set identifier and the network address that obtain based on resolver and is come self is carried out network configuration, to form wireless network with described video source.
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| CN101938625A (en) * | 2010-09-15 | 2011-01-05 | 中兴通讯股份有限公司 | Video conference system and realization method thereof |
| CN107948974B (en) * | 2017-11-29 | 2021-06-25 | 江苏省未来网络创新研究院 | WiFi security authentication method |
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|---|---|---|---|---|
| CN1430409A (en) * | 2001-12-25 | 2003-07-16 | 精工爱普生株式会社 | Radio control system and method for projector |
| CN1645923A (en) * | 2004-01-21 | 2005-07-27 | 精工爱普生株式会社 | Network system of projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430409A (en) * | 2001-12-25 | 2003-07-16 | 精工爱普生株式会社 | Radio control system and method for projector |
| CN1645923A (en) * | 2004-01-21 | 2005-07-27 | 精工爱普生株式会社 | Network system of projector |
Non-Patent Citations (3)
| Title |
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| JP特开2004-259090A 2004.09.16 |
| 附图1、5. |
| 附图1、7. |
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