Currently on the market there are a lot of digital video monitoring system USES a PC with Microsoft Windows as operation platform (commonly referred to as the PC base) digital video monitoring system, mainly because the Windows provide the development environment of the familiar, can support a large number of peripheral devices and applications, so the developer is very easy to get started. However the Windows operating system is not a single application demand of the digital video monitoring system design, by its own version of the cost is expensive, complex software and packaging too many additional features, so higher requirements for the hardware resources, reduce the relative stability, the reliability of the system.
In addition, at present there are a large number of digital video surveillance System is to use single chip with exclusive RTOS (Real - Time Operating System) as its main platform (generally known as the Stand of the u.s digital image monitoring System); RTOS is itself for reliability requirement is high, the elastic design of embedded application design, but due to its limited by non-standard platform as well as the factors such as market size, and expensive development costs and licensing fees, if the order is a company limited development resources, is difficult to rapid pace with the development of the digital video monitoring system related technology.
The advantage of Linux
After several years of development, the Linux increasingly mature technology and products, more and more companies understand the advantages of Linux, and selects the Linux as the main operating system and application platform, security monitoring (Surveilliance) application is no exception.
Linux with its unique characteristics, have long digital video monitoring market; It can be for different hardware (PC and single chip) and digital video monitoring application requirements and tailored, not only the complexity of the color system can be avoided, and can effectively reduce the demand for hardware resources; In order to effectively reduce the digital video monitoring and safety management system of the overall operating costs, Linux operating system should be the most appropriate choice. The following characteristics: Linux has
1. Linux offers many people use (Multiuser), many workers (Multitask) the integrity of the work environment, as long as a few hardware support, can be in a variety of different operations on computer equipment (or single chip).
2. Linux have high resolution and good graphic user interface (GUI), substantial increase the affinity of digital monitoring system application.
3. Linux completely free, can be arbitrary on the Internet to download, copy, use, its code is completely open at the same time, the development, changes can be arbitrary. Such characteristics make more than ten million people worldwide use Linux, more because many manufacturers into core development procedures, development of relevant software and hardware peripheral driver, growing make Linux function and integrity.
4. Linux itself open architecture and flexible, Scalable design, to offer digital video monitoring application designed to remove has nothing to do with the monitoring of surplus function, at the same time, improve the system performance is also reduced the chance of a problem.
5. Linux is from beginning to end for the network job design, can support the TCP/IP, the WWW and so on many international standards, can cater to a new generation of DVR products/Internet communications network link all needs.
Due to the digital video monitoring system is a special field, which involves a large number of I/O operations/storage and CPU operation image capture, image compression/decompression, therefore, in order to meet the 24 hours a day, 7 days a week online service requirements, and reduce overall operating costs, in addition to the function the considerations, the choice of operation platform is also very important.
Linux and a new generation of digital video monitoring applications
Linux operating system with real-time image capture card and camera, video real-time compression, video, storage, etc, in addition to being able to develop the operation is simple, simple, popular price IA (information appliance) concept digital video monitoring system, can effectively integrate the network, telephone network, security anti-theft devices, as autonomy to preserve security monitoring equipment.
Different from other video applications, DVR by having to store large amounts of security surveillance footage, so have high capacity data storage and data backup function, is one of the important considerations choose the operating system.
Linux in addition to support high capacity hard disk for data storage, and through adding hard disk and which has the function of data mirror disk array to increase storage capacity; In addition, the backup support rich, around the backup data can be effective in DAT/DLT tape recorders, cd-rw, and combining with the network technology of NAS network storage devices.
Existing digital video surveillance products on the market the main appeal, mostly to satisfy a single field personnel operation requirements, independent monitoring sites for decentralized, unattended operation, a large number of centralized management, setting, monitoring, alarm processing requirements, and can't provide a set of effective overall solution; Linux operating system, however, be required to use this kind of stability and complete network function; Many sets of digital images of the Linux base can effectively through the Internet to be combined with the monitoring system, central monitoring system with remote digital video monitor host solution, not only can meet this demand, and with the future expansion of elasticity.
In the future of the Internet era, users need to have the powerful network function of remote monitoring system, integrated digital video monitoring, gates guard against theft, fire safety equipment such as fiduciary, by means of modularization of graphical interface control, intelligent monitoring systems allow users can through the Internet browser or other devices, effectively anytime and anywhere remote multipoint real-time video surveillance and control of related equipment; Through the embedded Linux operating system provide the required stability and efficiency of this system will be able to effectively assist enterprises, factories, community to establish internal control center, control of branches scattered around.
Linux has excellent application prospect
Linux operating system stability, security, reliability has been recognized by the industry, at present most of the embedded system is tend to use the Linux operating system, the related development tools, web browser, GUI, application software technology already quite mature, basically a commercial embedded Linux system application has been cut into the market including industrial control, network equipment, set-top boxes, computer network... , such as digital video surveillance system is also one of the most commercial prospects of the Linux application, one of the visible, concept of Linux in the IT industry has been through the bubble period, enters the utility market, is preparing to bear fruit.
