Mobile video monitoring and remote control system and its applications - mobile TV, mobile video, Internet TV - Broadcasting industry
With three major domestic carriers continue to push forward the construction of 3G networks, high-speed mobile network applications based on mobile phones more and more, including a very special is the mobile video surveillance.
Break through the bottleneck of network bandwidth limitations, the mobile video monitor with a good video clarity and real-time, which not only has the image of fixed-line video surveillance capabilities, but also fundamental to meet the user at any time, anywhere remote viewing the demand for real-time surveillance video, has the following advantages: the advantages of anytime, anywhere, to achieve the AnyTime, AnyWhere, AnyDevice (any time, any place, any device) to video surveillance; cost advantage, the phone is a "everyone has" the terminals, video surveillance client as when used as a reuse, reduce user investment, in addition, with PC prices low compared to mobile phones, has a good cost advantage; security advantage, phone number and serial number of mobile devices to the uniqueness of strict sense, the user only authentication, user-friendly management.
With performance continued to improve, 3G mobile phones have become a "universal terminal." Phone not only for video browsing, real-time image capture, video, audio, and then sent to the platform for processing, storage, comparison, can further improve the efficiency and application of mobile phone applications. In addition, the phone as a control terminal, the MachineTo Machine type remote control device is mobile video surveillance and remote control objectives.
2 Intelligent Mobile Video Surveillance Integrated System Architecture
As previously stated, according to user needs and the different scenarios, 3G mobile phones as video browsing, control signaling to send, video or audio capture, image capture and other functions to achieve the terminal or client, in attaching the other front-end or client devices configured by the platform, different means, is able to form different purposes. 3G mobile networks based on a whole range of applications can be shown in Figure 1, under the framework of a unified system.
From a structural point of view, and fixed line Network Video Monitoring system similar to the system as a whole is divided into front-end equipment, the center management platform, the client devices in three parts.
Front-end equipment can be divided into: the camera class, specifically to include the simulation of ball machines, analog and IP-ball machine bolt, bolt; coding and storage server type, the specific can be divided into DVS, DVR, NVS, NVR, etc.; sensor type, such as infrared sensors, magnetic sensors, window, door magnetic sensors, flame sensors, temperature sensors; other collection device class, such as mobile phones, audio capture device; alarm device class, such as the alarm switch, alarm, alarm speakers.
Center platform devices include business management, Streaming Media Distribution, video transcoding, video storage, alarm processing, signaling gateway, SMS / MMS gateway, intelligent analysis than on the other server.
Main functions of client devices is surveillance video browsing, search and view recognition results, feature configuration front-end equipment, specific equipment for monitoring and control form PC, video matrix, TV Wall or other mobile terminals such as mobile phones, PDA, PPC, etc..
Architecture from the above we can see, 3G mobile phone with the collection, visit the capability and removable features, so the entire system architecture not only can be used as front-end 3G mobile phone equipment for real-time video capture and image capture upload Clients can also monitor real-time as a video browsing, alarm view, intelligent analysis and control of the results view so.
Typical applications
3 3G phone functions As the 3G mobile phone features
diversity of applications in different role played by devices also vary, depending on the application of the following scenarios on 3G mobile phones in which the function played separately described.
3.1 surveillance video here To China Telecom cdma2000EV-DORevA network, for example, the single-carrier frequency peak downlink and uplink respectively 3.1Mbit / s and 1.8Mbit / s, based on high bandwidth with high resolution and framerate of mobile video Browse and wireless real-time video uploads are possible. At present, the formal business of China Telecom have been the world's eyes wireless phone video viewing product standard video encoding formats as H.264baselineprofilelevel-1.2 (QVGA: 320 × 240 @ 20), basically to satisfy users in real time and more HD Xi-degree mobile video viewing needs.
Video browsing application in the phone, if the real-time video from the wall for the PC or television viewing equipment acquisition, are generally required to call center platform, "video transcoding server" will CIF/D1 resolution, high frame rate video transfer code for the H.264 format code small stream; current premises equipment directly coding for small stream with a small stream or upload capacity, you need to call center platform "Video relay server" will be forwarded to the mobile phone video.
3.2 video capture will be a front-end 3G mobile phone applications
Real-time video capture in mobile applications, business management server platform by mobile phone number assigned by a unified access ID, on the high quality camera and video encoding capabilities with strong real-time mobile phone, the front end as a video capture access platform, its become to some extent consistent with the IP camera features front-end video capture device. When the phone comes with the camera open and using 3G networks for real-time video uplink upload, the video transmitted via video relay server, you can access a variety of ways from the video wall to monitor the use of C machine, as a video viewing client Other mobile phone and other terminal real-time view.
In addition, the dedicated mobile client basis, users can also upload the phone as a data channel, using its own USB cable to connect multiple devices such as Digital Cameras , Digital cameras, external storage, etc., to achieve a variety of other high-speed data, wireless upload, so as to expand the mobile terminal as a data upload applications.
3.3 phone-based alarm and control Home Comprehensive Security
3G network based on integrated system of intelligent mobile surveillance Another typical application is in mobile video surveillance based on superposition of a variety of alarm and remote control of home equipment, home security system integrated with the specific equipment and processes indicated in Figure 2 below.
Home phone alarm and control diagram of an integrated security system
Composition of the system equipment as shown in Figure 1, consistent with the overall architecture is divided into front, platform, client-side of three parts. Front-end including the camera (the gun-shaped, spherical cameras), multiple sensors (door magnetic, magnetic windows, infrared).
