WO2007115462A1 - Method for realizing remote monitoring service and video terminal device - Google Patents

Abstract

A method for realizing remote monitoring service is disclosed, which includes: when a monitored first video terminal is in the state of reception, it reminds the second video terminal to transmit the authentication information if the time duration of an incoming call from the second video terminal reaches a set threshold; and said first video terminal receives the authentication information returned by the second video terminal, and the monitoring information obtained by the local side is transmitted to the second terminal to perform monitoring after it is determined that the authentication information returned by the second video terminal is the same as the authentication information set by the local side. In addition, a video terminal device is also disclosed, which includes a monitoring control module for realizing said remote monitoring method.

Description

 Remote monitoring service realization method and video terminal device

 The present invention relates to video communication technologies, and in particular, to a remote monitoring service implementation method and a video terminal device. Background technique

 With the rapid development of broadband technology, broadband-based applications are also increasing. Video and audio applications on broadband are rapidly developing and widely used, and various video services are born. On the broadband network, two standard video communication systems based on the H.323 protocol and based on the SIP protocol have been gradually developed.

 Some of the mainstream video services that are rapidly developing today include video conferencing, distance learning/training, telemedicine, enterprise conferencing, video on demand and other video services. Remote monitoring of video services is a very important one.

 Most of the traditional monitoring systems are used in special occasions such as transportation, industry, enterprises and institutions. They usually use dedicated high-definition cameras, and they have complex command and control systems, and are generally dedicated to private networks and expensive. Such monitoring system equipment is complicated to install, huge in system, high in cost, unable to meet some simple monitoring requirements, and has poor mobility, and the monitoring person can only perform monitoring at a fixed location.

 To this end, some video vendors have developed video terminals with automatic answering functions, which enable simple monitoring functions. However, the video terminal can only achieve peer-to-peer monitoring, and does not have the function of authenticating the listener. Once the video terminal is set to automatically answer, anyone can dial the user number for monitoring, so the security is poor. Summary of the invention

 The embodiment of the invention provides a method for realizing remote monitoring service between video terminals, so as to solve the problem of poor security of the existing video monitoring service;

A method for implementing a remote monitoring service between video terminals according to an embodiment of the present invention includes The following steps:

 When the monitored first video terminal is in the receiving state, if the duration of the call from the second video terminal reaches a set threshold, the second video terminal is prompted to send the authentication information;

 The first video terminal receives the authentication information returned by the second video terminal, and after determining that the authentication information returned by the second video terminal is consistent with the authentication information set by the local end, the monitoring information collected by the local end is sent to the second The video terminal is monitored.

 The embodiment of the invention further provides a video terminal device for realizing a remote monitoring service, so as to solve the problem that the cost of the existing dedicated monitoring system is too high.

 A video terminal device provided by the embodiment of the invention includes: an acquisition module, a codec control module, a call control module, and a monitoring control module;

 The call control module triggers the monitoring control module to perform monitoring and authentication when the duration of the call is reached, and the monitoring control module triggers the codec control module to send the prompt information of the input authentication information to the call initiator. ;

 The call control module transmits the authentication information returned by the call originator according to the prompt information to the monitoring control module, and after the monitoring control module authenticates the successful call originator according to the authentication information, the acquisition module starts the collection module to collect the local monitoring information. The codec control module encodes the monitoring information and sends the monitoring information to the call originator.

 The method for implementing the remote monitoring service between the video terminals according to the embodiment of the present invention ensures reliable authentication by setting the authentication information between the video terminals, and ensures the security monitoring service between the video terminals. The video terminal device is used to implement the remote monitoring method. The device can be compatible with the existing network, and does not require any development of the network side device, and has strong flexibility and good scalability. DRAWINGS

 Figure 1 is a networking diagram of a peer-to-peer authentication monitoring service;

2 is a schematic diagram of an implementation process of a point-to-point remote monitoring service according to Embodiment 1; FIG. 3 is a networking diagram of monitoring a terminal for multiple terminals; FIG. 4 is a schematic diagram of an implementation process for implementing remote authentication of multiple terminals by establishing a multipoint video conference according to the second embodiment; FIG.

 FIG. 5 is a schematic structural diagram of a video terminal device for implementing remote monitoring according to Embodiment 3

detailed description

 The technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

 Embodiment 1

 As shown in FIG. 1 , FIG. 1 is a network diagram of a peer-to-peer authentication monitoring service. The video terminal A and the video terminal B are connected to each other through a video network, and the video terminal A is remotely monitored by the video terminal B. The implementation flow chart of the remote monitoring service is shown in FIG. 2, and includes the following steps:

 5101. Set the monitored video terminal B to be in an automatic answering state and set authentication information on the video terminal B. The authentication information may be an authentication password or a digital signature. The following takes an authentication password as an example for description;

 5102. The video terminal A initiates a call to the video terminal B.

 5103. When the video terminal B is called in the automatic answering state, a prompt dialog box is displayed, for example, if the answer is not answered within the set time, the call is automatically answered and the authentication mode is entered, otherwise the normal voice call state is entered;

 Here, 10S is only a specific embodiment, and the time threshold can be flexibly set as needed, for example, set to 15S, 8S, 5S, and the like.

 5104. The video terminal B prompts the video terminal A to send the authentication password, and the prompting method may be: sending an image of the input authentication password to the video terminal A;

 5105. The video terminal A displays the prompt information, and can simultaneously emit a prompt tone. For example, when the video terminal A receives an image from the video terminal B prompting to input the authentication password, the image is displayed to prompt the user to input the authentication password, and simultaneously Give a tone;

5106. The user of the video terminal A inputs an authentication password, for example: the user of the video terminal A can Enter the authentication password in the image displayed on the LCD screen, press '#, confirm the number, press '*, modify; in step S106, after the user enters a password character on the LCD screen of the video terminal A, the video terminal A is right. This character is encrypted, and then the character is sent to the video terminal B by means of secondary dialing. The video terminal B decrypts the received character and detects it: if it is not received by '*, or '#, then Store this character in the cache (video terminal Buffer); if you receive '*, clear the last character in the video terminal Buffer; if you receive '#', then the password in the video terminal Buffer Authenticate;

 5107. The video terminal B performs authentication according to the authentication password. If the authentication succeeds, the next step is performed. If the authentication fails, the video terminal A sends the authentication password again according to the set number of times, for example, three times. Right, until all three authentications fail, the video terminal B automatically hangs up the current monitoring request of the video terminal A;

 Here, the video terminal B pre-sets the authentication password at the local end, and the video terminal B performs authentication according to whether the authentication password sent by the user and the authentication password stored by the local end are consistent. The authentication password saved by the video terminal B at the local end may be If the video terminal B does not save the authentication password on the local end, the authentication cannot be performed, and the video terminal B automatically hangs up the current monitoring request of the video terminal A.

 5108. The video terminal B sends a signaling to the video terminal A after the authentication is passed, and the video source information currently available to the video terminal B is described in the message.

 Video terminal A parses out the video source information from it, and then displays the information to the user in a list for the user to select.

 5109, the user selects a video source to be monitored from the list and inputs the video terminal A;

 5110, the video terminal A sends the user's selection result to the video terminal B;

 5111. The video terminal B collects monitoring information of the video source selected by the user, the monitoring information includes a video image, and further includes a sound signal of the video source, and the video terminal B encodes the image into a chirp stream and encodes the sound signal into an audio code. Stream, then generate a multimedia code stream containing the video code stream and the audio code stream, and send the multimedia code stream to the video terminal A;

Of course, it is also possible to collect only video images or generate multimedia when no sound signals are collected. Only the video stream is included in the body code stream, and the audio stream is not included.

 S112. The video terminal A receives the multimedia code stream, and restores the video image according to the video code stream in the multimedia code stream, and restores the sound according to the audio code stream, and monitors the image and the sound.

 In the above process, after the video terminal A authenticates, the video terminal B sends the video source information list to the video terminal A, and starts to send the corresponding video image and/or sound according to the selection result of the video terminal A; The video terminal A can keep displaying the video source list of the video terminal B. If the user reselects a video source in the list, the video terminal A sends a signaling to the video terminal B, which carries the user to reselect. According to the video source information, the video terminal B switches the video source according to the information, and generates a corresponding multimedia code stream to be sent to the video terminal A, thereby implementing flexible monitoring of the video source A by multiple video sources.

 Embodiment 2

 Referring to FIG. 3, FIG. 3 is a networking diagram of a terminal performing authentication and monitoring services on multiple terminals. The service is implemented based on the establishment of a video multipoint conference. The MCU (Micro Controller Unit) in the figure is a switching control device, which is responsible for video switching, audio mixing, data processing, terminal access, media stream processing, and the like. , is the processing center of the video stream of the video system. The MCU can be connected to a plurality of video terminals, and the specific number depends on different devices. The video terminal connected thereto can hold a video conference, and then add other video terminals to the conference to implement communication through the MCU, and then according to the first embodiment. The method monitors each monitored object separately.

 As shown in FIG. 4, the terminal video terminal A monitors the video terminal B, the video terminal C, and the video terminal N as an example. Before performing monitoring, the following steps are required:

 5201. Establish a video multipoint conference through the video terminal A, and separately set the video terminal B, the video terminal C, and the video terminal N to be an automatic answer mode;

 5202, the video terminal A summons the video terminal B, the video terminal C, and the video terminal N join the video multi-point conference;

5203. The video terminal A is connected to the video terminal B, the video terminal C, and the video terminal N through the MCU. After that, the video terminal is monitored by the MCU between the video terminal B, the video terminal C, and the video terminal N. If the video terminal A monitors multiple video terminals at the same time, the MCU can combine the video images of multiple monitored terminals. It is a multi-screen image and then forwarded to the video terminal A.

 In the following, the video terminal A and the video terminal B and C are simultaneously monitored as an example, without loss of generality. It is assumed that the video terminals B and C have been provided with an authentication password, wherein the video terminal B includes three video sources, and C only includes A video source:

 The video terminal A calls the MCU, and then the MCU calls the video terminal B and the video terminal C. After the video terminal B and the video terminal C answer the call, the A and B, A and C are respectively connected;

 During the call, the video terminal B and the video terminal C, the video terminal B and the video terminal C respectively pop up the answering prompt box. If the time limit is set, for example, if there is no answer in the 10S, the authentication mode is automatically entered; here, the 10S is only In a specific embodiment, the time threshold can be flexibly set as needed.

 S204, the video terminals B and C respectively send an image prompting the input of the authentication password to the video terminal A, prompting the video terminal A to send the authentication password;

 S205-S206, the video terminal A receives an image of the authentication password input from the video terminal B or C, displays the image prompting the user to input the authentication password, and can simultaneously emit a prompt tone, and the user of the video terminal A can be on the LCD screen. Enter the authentication password on it;

 After the user inputs a password character on the LCD screen of the video terminal A, the video terminal A encrypts the character, and then sends the character to the video terminal B or C by means of secondary dialing, and the video terminal B or C will receive the character. After the character is decrypted, it is detected: If the received message is not '*, or '#, then the character is stored in the buffer (Buffer); if '* is received, the last in the video terminal Buffer A character is cleared; if '# is received, the password in the video terminal Buffer is authenticated;

S207. The video terminal B or C performs authentication according to the authentication password. If the authentication succeeds, the next step is performed. If the authentication fails, the video terminal A is again sent to the authentication password according to the set number of times, for example, three times. The authentication is performed until the authentication fails three times, and the video terminal B automatically hangs up the monitoring request of the video terminal A; Here, the video terminal Β or C stores the authentication password at the same time, and the video terminal B or C performs authentication according to whether the authentication password sent by the user and the authentication password saved by the local end are consistent, and the video terminal B or C is saved in the video terminal B or C. The authentication password of the local terminal can be set or updated before the monitoring is performed. If the video terminal B or C does not save the authentication password on the local end, the current monitoring request of the video terminal A is automatically hanged because the authentication cannot be performed.

 The monitoring of the video terminal B includes steps S208 - S212:

 5208. The video terminal B sends a signaling to the video terminal A after the authentication is passed, and the video source information currently available to the video terminal B is described in the message.

 The video terminal A parses the video source information of the video terminal B from the signaling, and then displays the information to the user through a list for the user to select.

 5209, the user selects a video source to be monitored from the list and inputs the video terminal A;

 5210, the video terminal A sends the user's selection result to the video terminal B;

 S21 video terminal B collects the video image of the video source selected by the user and encodes the image into a video stream, and also collects the sound signal of the video source and encodes the sound signal into an audio stream, and then generates a video stream and an audio code. Streaming multimedia code stream, and the multimedia code stream will be sent to the video terminal A;

 S212. The video terminal A receives the multimedia code stream from the video terminal B, and monitors according to the restored video image and/or sound.

 In the above process, after the video terminal A authenticates, the video terminal B sends the video source information list to the video terminal A and starts to send the corresponding video image and/or sound according to the selection result of the video terminal A; during the monitoring process, The video terminal A can keep displaying the video source list. Whenever the user reselects a video source in the list, the video terminal A sends a signaling to the video terminal B, which carries the video source information reselected by the user. The video terminal B switches the video source according to the information, and generates a corresponding multimedia code stream to be sent to the video terminal A. Thus, the video terminal A can flexibly monitor multiple video sources.

 The monitoring of the video terminal C includes steps S208, and S209':

S208, after the video terminal C passes the authentication, the video image and/or sound according to the video source will be generated. The generated multimedia code stream is sent to the video terminal A;

 S209', the video terminal A receives the multimedia code stream sent by the video terminal C, and monitors according to the restored video image and/or sound.

 When the video terminal B and the video terminal C simultaneously send the multimedia code stream to the video terminal A, the MCU synthesizes the multimedia code stream of the video terminal B and the video terminal C into a multi-picture multimedia code stream and sends it to the video terminal A, where the video terminal A is in the present The terminal is displayed as a multi-screen image and sound, and the video terminal A performs parallel monitoring on the video terminal B and the video terminal C according to the multi-picture image and sound.

 The method for realizing remote monitoring service between video terminals according to the embodiment of the present invention achieves reliable authentication by setting authentication information between video terminals, thereby ensuring security monitoring services between video terminals; and in the monitored video terminal When multiple video sources are connected, you can pass the video source list and implement flexible control according to user selection. Further, by establishing a multi-point video conference, one-to-many remote monitoring can be realized to meet the needs of users at different levels.

 Embodiment 3

 As shown in FIG. 5, the embodiment of the present invention further provides a video terminal device 500, including: a codec control module 501, configured for codec processing;

 The collecting module 502 is configured to collect monitoring information of the video source and switch the video source according to the selection result of the monitoring user. The video source monitoring information includes a video image, and may further include a sound signal. The display module 503 is configured to display the received monitoring information. , generally including a liquid crystal display that displays a video image and a speaker that plays a sound signal;

 a call control module 504, configured to perform call control;

 The acquisition module 502 is connected to the call control module 504 and the codec control module 501, and the codec control module 501 is simultaneously connected to the display module 503;

The monitoring control module 505 is respectively connected to the call control module 504, the acquisition module 502, and the codec control module 501; the call control module 504 triggers monitoring when the duration of the automatic call is reached to a set threshold. The control module 505 performs monitoring and authentication, and the monitoring control module 505 triggers the codec control module 501 to send a prompt image of the input authentication information to the call originator; and the call control module 504 returns the call originator according to the prompt image. The authentication information is transmitted to the monitoring control module 505. After the monitoring control module 505 authenticates the successful call initiator according to the authentication information, the collection module 502 is started to collect the local monitoring information, and the collected monitoring information is processed by the codec control module 501. Then sent to the call originator.

 The monitoring control module 505 includes:

 The authentication triggering sub-module 5051 is configured to trigger the codec control module 501 to send the prompt image, and the determining sub-module 5052 is configured to perform authentication according to the authentication information saved by the local end and the authentication information returned by the call initiator.

 The password storage submodule 5053 is configured to save the authentication information on the local end.

 The video terminal device further includes: a human interface module 506, and a connection password storage submodule 5053, configured to input authentication information into the password storage submodule 5053.

 The monitoring control module 505 further includes: an information storage sub-module 5054, connected between the collection module 502 and the determination sub-module 5052, for storing monitoring information of the video source, and the determining sub-module 5052 is in the successful call originating party of the authentication. Then, the monitoring information saved in the extracted information storage sub-module 5054 is transmitted to the call control module 504, and the call control module 504 carries the monitoring information in the relevant signaling to the call originator, and then selects the monitored video source information by the call originator. The notification collection module 502, the collection module 502 switches to the corresponding video source, and sends the monitoring information of the switched video source to the codec module, which is encoded by the codec module and sent to the call initiator for monitoring.

 The codec control module 501 specifically includes:

 a data storage submodule 5012, configured to store encoded data of the prompt image;

 The codec sub-module 5011 is configured to encode the video image and/or the sound signal and generate the multimedia code stream to send to the call originator, or decode the restored multimedia code stream into a video image and/or a sound signal, and send the data to the display module. 503.

 The call control module 504 further includes a video multipoint conference control submodule 5041. If multiple video terminals are simultaneously monitored by the MCU, the monitoring party establishes a join multipoint conference and summons each of the "control objects" to join.

 The above video terminal device may be a fixed device or a mobile device.

The video terminal device disclosed in the embodiment of the present invention is configured to implement the remote monitoring method, where The device is compatible with existing networks, does not require any development of network-side devices, and is flexible and scalable.

' _: -, departing from the spirit and scope of the embodiments of the invention. Thus, it is intended that the present invention cover the modifications and the modifications of the embodiments of the invention.

Claims

Rights request A method for implementing a remote monitoring service, comprising the steps of:  When the monitored first video terminal is in the receiving state, if the duration of the call from the second video terminal reaches a set threshold, the second video terminal is prompted to send the authentication information;  The first video terminal receives the authentication information returned by the second video terminal, and after determining that the authentication information returned by the second video terminal is consistent with the authentication information set by the local end, the monitoring information collected by the local end is sent to the second Video terminal monitoring  2. The method of claim 1 wherein:  The method for the first video terminal to prompt the second video terminal to send the authentication information is: the first video terminal sends an image of the input authentication information to the second video terminal;  The method for the second video terminal to return the authentication information to the first video terminal is: the second video terminal displays the image of the input authentication information, and sends the authentication information input by the user through the image to the first Video terminal.  3. The method of claim 2, wherein the call enters a voice call flow if the call is answered before the duration reaches a set threshold.  The method of claim 1, wherein when the first video terminal is connected to more than one video source, the first video terminal sends the monitoring information collected by the local end to the second video message. Before the terminal performs monitoring, the local video source information list is sent to the second video terminal, and the second video terminal displays the video source information list, and sends the monitored video source information to the first video terminal. Then, the first video terminal collects the monitoring information of the video source selected by the user and sends the monitoring information to the second video terminal.  The method according to claim 4, wherein the method further comprises the steps of: the second video terminal keeps displaying the video source information during monitoring, and when the user reselects, the user is The result of the selection is sent to the first video terminal; The first video terminal switches the video source according to the selection result of the user, and sends the monitoring information of the switched video source to the second video terminal. The method according to claim 1, wherein the method further comprises the step of: the first video terminal establishing a video multipoint conference through the multipoint control unit and summoning the second video terminal to join the conference.  The method according to claim 6, wherein in the method, when the second video terminal simultaneously monitors two or more monitored terminals, the multipoint control unit monitors the monitored video terminal. The information is synthesized and forwarded to the second video terminal.  The method according to claim 4, wherein when the authentication of the second video terminal by the first video terminal fails, the authentication is repeated for a set number of times, and the authentication is performed for the set number of times. After all failed, hang up the call.  9. The method of claim 1, 4, 5 or 7, wherein the monitoring information comprises image information of a video source.  10. The method of claim 9, wherein the monitoring information further comprises a sound signal of a video source.  The method according to claim 1, wherein the authentication information is an authentication password. 12. A video terminal device, comprising: an acquisition module and a codec control module, wherein the video terminal device further comprises: a call control module and a monitoring control module;  The call control module triggers the monitoring control module to perform monitoring and authentication when the duration of the call is reached, and the monitoring control module triggers the codec control module to send the prompt information of the input authentication information to the call initiator.  The call control module transmits the authentication information returned by the call originator according to the prompt information to the monitoring control module, and after the monitoring control module authenticates the successful call originator according to the authentication information, the acquisition module starts the collection module to collect the local monitoring information. The codec control module encodes the monitoring information and sends the monitoring information to the call originator.  The video terminal device according to claim 12, wherein the monitoring control module comprises: An authentication triggering submodule, configured to trigger the codec control module to send the prompt information; and a determining submodule, configured to use the authentication information saved by the local end and the authentication letter returned by the call initiator Information authentication;  The password storage submodule is used to save the authentication information on the local end.  The video terminal device according to claim 12, wherein the video terminal device further comprises: a human machine interface module, configured to set authentication information in the password storage submodule.  The video terminal device according to claim 13, wherein the monitoring control module further comprises: an information storage sub-module, configured to save video source information, where the determining sub-module is after authenticating the successful call originator The video source information is sent to the call originator by using the call control module, and the selection result of the call originator is notified to the collection module, and the collection module switches to the corresponding video source.  The video terminal device according to claim 12, wherein the codec control module comprises:  a data storage submodule, configured to store encoded data of the prompt image;  A codec sub-module that encodes the monitoring information and sends it to the call originator.  The video terminal device according to claim 12, wherein the call control module further comprises a video multipoint conference control submodule for establishing and controlling a video multipoint conference.  The video terminal device according to claim 12, wherein the monitoring control module comprises a display module, configured to display monitoring information received and decoded by the codec control module.