CN1731847A - Multimedia communication method - Google Patents
Multimedia communication method Download PDFInfo
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- CN1731847A CN1731847A CN 200510021464 CN200510021464A CN1731847A CN 1731847 A CN1731847 A CN 1731847A CN 200510021464 CN200510021464 CN 200510021464 CN 200510021464 A CN200510021464 A CN 200510021464A CN 1731847 A CN1731847 A CN 1731847A
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- multimedia communication
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Abstract
A multimedia communication method relates to the communication technology, especially for the multimedia communication safety monitoring. The invention provides a communication method for the multimedia communication safety monitoring, which can realize a safe and reliable remote multimedia communication. The method comprises following steps: a. calling party requesting a connection to a called party; b. the called party performing a safety certification, then establishing the multimedia communication if passing the safety certification; and the called party stopping the communication if not passing the safety certification. The user can apply the system resource furthest.
Description
Technical field
The present invention relates to the communication technology, particularly be used for the communication technology of multimedia communication security monitoring.
Background technology
At present, a lot of terminal producers adopt monitored end build-in services software, and monitoring client obtains the MPEG4 real time video data that monitored end is gathered by the remote access mode of client, thereby realize remote monitoring.Also there are some producers that this mode is applied in the visual telephone system of network.This mode expends system resource, can not provide safe and reliable remote monitoring simultaneously.And this mode is mainly used in the private network not large-scale the application at present.
Summary of the invention
Technical problem to be solved by this invention is, a kind of communication means that is used for the multimedia communication security monitoring is provided, and can realize safe and reliable remote multi-media communication.
The technical scheme that the present invention solve the technical problem employing is that multimedia communication method may further comprise the steps: a. calling party initiates connection request to the callee; B. the callee carries out safety verification to the calling party, if by safety verification, then set up multimedia communication; If not by safety verification, the callee finishes communication.
Further, among the step a, the calling party sends audio/video information to the callee.In step b, described safety verification is: the calling party sends password to the callee, and the callee is with this password and preset password verification.Especially, with the multimedia communication protocol signaling as crypto carrier.In step b, the callee sends information to the calling party, prompting input password.Described information is sent with the picture form.More specifically, in step b, input password by the calling party, character of the every reception of callee promptly sends a secondary new picture to the calling party, prompting current password state.Aforementioned audio/video information is the information from microphone and camera.
The invention has the beneficial effects as follows that according to technology of the present invention, the user can realize safe and reliable remote monitoring.Not only company, sub-district can adopt it to set up reliable supervisory control system, and the domestic consumer also can carry out real-time security monitoring to situation in the family outside; Not only can be applied in small-scale local area network (LAN), company's net, the metropolitan area network, and can be applied in the wide area network, the user can carry out safe remote monitoring to the place outside a thousand li by it.Simultaneously, according to the present invention, can realize the security monitoring of multiple spot by the mode of multipoint conference to same control point.And implementation economy of the present invention, can utilize system resource (multimedia communication terminal to greatest extent, especially network visual telephone terminal, itself just have H.263 and coding and decoding video H.264, thereby need not provide the coding and decoding video ability that expends system resource more separately for monitoring), provide terminal scheme more cheaply to the user.
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Description of drawings
The schematic diagram of Fig. 1 for realizing that the calling party separates with callee's function.
Fig. 2 is a flow chart of opening audio frequency and video passage process.
Fig. 3 is be totally lost audio frequency and video transmission schematic diagram before and after the password of calling terminal.
Fig. 4 is in the A end input cryptographic processes, and the video image on the A end screen changes schematic diagram.
Fig. 5 correctly input for calling terminal and the process of the password of being totally lost in audio frequency and video transmission schematic diagram.
After Fig. 6 is the input error of calling terminal password, calling terminal screen prompt schematic diagram.
Embodiment
In video-phone system H.323, the situation of calling out between the different terminals has many kinds.Only with regard to terminal A calling terminal B and set up with regard to the conversation of normal audio frequency and video, mainly contain H.225 calling procedure, H.245 capability negotiation and principal and subordinate's decision and open audio frequency and video logical channel process, both sides by RTP channel transfer audio, video data process.
The course of work of the technology that the present invention adopts occurs in both sides and has successfully opened the audio frequency and video logical channel and begun after the transmission tone video data by the RTP passage.
In order to concentrate explanation operation principle of the present invention, here adopt two terminals all at public network, terminal A carries out the situation of point-to-point direct calling to terminal B, the present invention will be described (when relating between public network terminal and the private net terminal, and when conversing between private net terminal and the private net terminal, in fact just rely on miscellaneous equipment to signaling H.225, H.245 signaling or audio, video data are transmitted, and are utilizing technical not essential distinction of the present invention).Wherein terminal B has been provided with cryptoguard " automatic-answering back device " function, supposes that here password is " w3k ".
As shown in Figure 1, description is the process that both call sides is opened the audio frequency and video transmission channel.
Present technique reads out password that the calling party sends over separates with three functions utilizing signaling H.245UII to send password with " automatic-answering back device " password setting, from the H.245UII signaling of receiving, thereby has compatible widely.Situation when adopting radio phone terminal of the present invention by other terminal call only needs other terminal support to send signaling H.245UII and supports H.245UII GeneralString option, can realize the audio frequency and video conversation smoothly.
As shown in Figure 2, description be after conversation is set up, terminal A is according to the process of the requirement input password of terminal B.
Here, in the time of might as well supposing terminal A calling terminal B, the result that both sides carry out capability negotiation is that both sides send H.263 video image mutually, and A sends g.728 audio frequency to B, and B sends g.711a audio frequency to A.In this process, both sides at first open the logical channel of the corresponding audio frequency and video of transmission to the other side's application, and after the other side agreed, logical channel was opened, and begins to transmit corresponding audio and video data streams by RTP.This process is fairly simple, and has a lot of open source literatures to introduce this process, just has not been described in detail here.
As shown in Figure 3 and Figure 4, description be after conversation is set up, terminal A is according to the process of the requirement input password of terminal B.
After conversation was set up, terminal A just began to send normal audio, video data to terminal B, and terminal B can hear from the sound of the microphone of A and can see image from the camera of A on screen; Terminal B requires A input password to carry out safety verification to terminal A transmission picture simultaneously.In the process of A input password, A carries character (with numeral or alphabetical form) by signaling H.245UII and sends to B, the every pilosity of A send a character simultaneously, and B just sends a new filling video pictures (at the many asterisks " * " of password input field) and gives A, as shown in Figure 4.This special process last till always A by signaling H.245UII carry character " # " till B sends (this programme agreement, in the character that H.245UII carries, " * " thus expression remove and imported content and import again, " # " expression confirms that input finishes; But in fact can utilize other two next corresponding these two effects of characters in addition).In this process, B can send g711a voice data quiet or that carried out other specific filling to A, with the audio frequency safety before the assurance password confirming.After A sent password and finishes, terminal B also began to send normal audio, video data to terminal B, and promptly terminal A can hear from the sound of the microphone of B and can see image from the camera of B on screen.
As shown in Figure 5, description be calling terminal correctly input and the process of the password of being totally lost in audio frequency and video transmission situation.
In the process of A input password, we can operate intuitively and see that A imports the process of password on screen; But in fact at this moment in the communication of underlying protocol stack, A just constantly is transferred to B by signaling H.245UII with code characters, every H.245UII signaling all carry and only carry a character.In this process, A will give B from the voice data of the local microphone of A with from the video Data Transmission of the local camera of A constantly, but B will not be transferred to A from the microphone of B this locality and the audio frequency and video of camera, thereby guarantee the safety of B end before terminal A is smoothly by cryptographic check.B can only send quiet or other special audio data to A, simultaneously B constantly gives A according to the picture that paid-in password from A sends " requiring the input password ", and represents the number of the code characters that A had confirmed by the increase and decrease of password input field on picture asterisk.
As shown in Figure 6, description be the input error of calling terminal password after, calling terminal screen prompt situation.
The prompting that after the input error of calling terminal password, called end sends to calling terminal " the password mistake please be re-entered " is shown in the filling video c among Fig. 6.If continuous three input errors, called end will initiatively be initiated the request of " this locality is hung up ", and closing passage also finishes conversation.
Claims (9)
1, multimedia communication method is characterized in that, may further comprise the steps:
A. the calling party initiates connection request to the callee;
B. the callee carries out safety verification to the calling party, if by safety verification, then set up multimedia communication; If not by safety verification, the callee finishes communication.
2, multimedia communication method as claimed in claim 1 is characterized in that, in step a, the calling party sends audio/video information to the callee.
3, multimedia communication method as claimed in claim 1 is characterized in that, in step b, described safety verification is: the calling party sends password to the callee, and the callee is with this password and preset password verification.
4, multimedia communication method as claimed in claim 3 is characterized in that, with the multimedia communication protocol signaling as crypto carrier.
5, multimedia communication method as claimed in claim 3 is characterized in that, in step b, the callee sends information to the calling party, prompting input password.
6, multimedia communication method as claimed in claim 5 is characterized in that, described information is sent with the picture form.
7, multimedia communication method as claimed in claim 6 is characterized in that, in step b, inputs password by the calling party, and character of the every reception of callee promptly sends a secondary new picture to the calling party, prompting current password state.
As the described multimedia communication method of above arbitrary claim, it is characterized in that 8, described audio/video information is the information from microphone and camera.
9, multimedia communication method as claimed in claim 8 is characterized in that, the code characters that the calling party sends to the callee is carried by UII signaling H.245.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510021464 CN1731847A (en) | 2005-08-12 | 2005-08-12 | Multimedia communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510021464 CN1731847A (en) | 2005-08-12 | 2005-08-12 | Multimedia communication method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1731847A true CN1731847A (en) | 2006-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510021464 Pending CN1731847A (en) | 2005-08-12 | 2005-08-12 | Multimedia communication method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105872833A (en) * | 2015-12-15 | 2016-08-17 | 乐视致新电子科技（天津）有限公司 | Video communication method and device, and smart television |
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2005
- 2005-08-12 CN CN 200510021464 patent/CN1731847A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105872833A (en) * | 2015-12-15 | 2016-08-17 | 乐视致新电子科技（天津）有限公司 | Video communication method and device, and smart television |
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