What is the specific form of surveillance video capture card? How is the network surveillance video storage implemented? We will give you a detailed introduction below.
Through the integrated management platform, the original hard disk recorder, the newly added three brands of network cameras and the high-definition video signals encoded by the SDI encoder are unified access and integrated management, realized in the same digital private network platform The unified management of all videos in the network is uniformly scheduled. What is the specific form of surveillance video capture card? How is the network surveillance video storage implemented?
Monitor and store soft and hard cards
Now as long as you buy a DVR card, the owner generally asks you which type of card you want-soft card or hard card? Here we will first introduce the difference between soft and hard cards.
Soft compression DVR
The DVR with a soft card is generally called a soft compressed DVR, which is actually a video capture card. The card is equipped with monitoring software to realize video surveillance, video recording, historical video playback, and remote monitoring functions. (For example: fusion878a, saa7130 / 7134, tw6802B / 6805, etc.) Receive the signal from the analog camera, convert it into a digital signal, and then directly or through the PCI bridge chip from the PCI golden finger into the motherboard, the original digital video signal, executed in memory The CPU instructs the operation, compresses and processes the video, and then stores it to the hard disk. In addition, the original video data is sent directly to the graphics card and previewed through the monitor.
The circuit board of the soft card is very simple, there is no compression chip and temporary storage chip on the board, and the cost is low, generally about 1/3 of the hard compression, so the price is its biggest advantage. In addition, we can see from the principle that the soft compression DVR It is compressed by the CPU, so its compression quality is better, and the resolution of the video is high. With sufficient CPU resources, the soft compression DVR is no less than the hard compression DVR in recording, network, and other functions.
Hard compression DVR
Hard compression DVR, also known as video capture compression card, is basically the same as the soft compression principle. The difference is that after the analog video is converted into a digital signal, it is not directly sent to the motherboard, graphics card, and memory through PCI, but is first hard compressed. The DSP that comes with the DVR card replaces the computer CPU to execute the compression algorithm instruction, the memory chip on the DVR card is compressed, and then enters the motherboard through the PCI gold finger. So the hard compression DVR circuit board has more DSP or other compression chips and memory chips. Therefore, the main advantage of hard compression DVR is mainly manifested in large-channel monitoring, such as full-time monitoring of more than 32 channels. Soft compression is difficult to achieve, and this market gap can be occupied by hard compression.
Network surveillance video storage permission allocation
The original analog video is distributed storage using a hard disk recorder. On this solution, we can make full use of the existing equipment, protect the existing investment to the greatest extent, and do not make more changes; For the additional SD / HD network cameras, we need to use the functions of the storage unit of the Red Apple PE5060 video integrated management platform to connect these three mainstream brand network cameras to the platform for comprehensive storage; similarly, we will encode the SDI video data It is also connected to the platform to achieve comprehensive storage through storage units and arrays.
In the three-level networking, the municipal command center, branch command center and police station will digitize the local domain image or IP network monitoring image to realize a unified streaming media network application, adapt to the application requirements of the three network convergence and network sharing of all application units. Application requirements. The network relies on the public video security network that has completed the integration of the three networks and the dedicated three or four level operation network. The network has provided a 1000M private broadband network for the municipal application command center to the various county (city) bureaus and teams, fully satisfying the "safety" "Urban construction" streaming media application; at the same time access to the municipal government's government affairs network through the government affairs network, to provide shared services for the government's functional departments, through the municipal bureau's public security network interconnected with higher-level public security organs, to provide online sharing of local image resources. Realize the "safe city construction" digital image sharing application on the public security organ command network, government emergency platform and government online computer desktop.
Moreover, in the later period, the network video of the street or the social plane can be connected to the private network through authorization and gatekeeper isolation to achieve larger-scale video resource sharing and application. By means of registration and authorization, the integrated management platform can realize the access rights for all users in the network to all front ends in the network.
As for the realization of the three-level cascade control system in the municipal office command center, branch command center and police station through SDI HD hybrid matrix, the user of the system can be given priority to the users in the system through the client management system of the CS architecture of the SDI HD hybrid matrix. The setting of the level can also be used to control the entire cross-user priority of the entire system through the control keyboard. This system sets up 64 users and different passwords, which can limit the operation of unrelated personnel. And can indicate the current system working status in real time through the control keyboard.
Because the system is a multi-level networked control system, users can log in on any client or the main control keyboard within the system through a successfully registered user name, and can obtain a predetermined level of authorization to achieve control of the entire system video. This has great practical significance in the practical application of emergency command. In case of emergencies, the leaders of the municipal bureau can choose any police station or branch as the command and operation center and can realize the call and unified management of image resources across the entire network to adapt to the special application requirements of command and dispatch for image resources.
Flush door is a simple and commonly used type of interior door that has a plain, flat surface on both sides. It is called a "flush" door because its surface is typically flush or level with the door frame, lacking any raised or recessed panels or other decorative elements. Flush doors are known for their simplicity, versatility, and affordability. Here are some key features and benefits of flush doors:
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Simplicity: Flush doors have a minimalist design with a smooth, flat surface. They offer a clean and uncluttered look, making them suitable for various interior styles, from modern and contemporary to minimalist and industrial.
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Affordability: Flush doors are generally more affordable compared to doors with elaborate paneling or decorative features. They provide a cost-effective solution for homeowners or builders working within a budget.
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Space-saving: Flush doors are typically thinner and lighter compared to solid wood doors. This can be advantageous in situations where space is limited, such as small rooms or areas with narrow door frames.
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Easy maintenance: Flush doors are relatively easy to clean and maintain. Their smooth, flat surface can be easily wiped down with a damp cloth or mild cleaning solution.
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Sound insulation: Depending on the construction and material used, flush doors can offer good sound insulation, helping to reduce noise transmission between rooms.
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Customizability: While flush doors are generally simple in design, they can be customized with various features such as glass inserts, grooves, or veneers to add visual interest or match specific design requirements.
Flush doors are commonly used for interior applications, such as bedrooms, bathrooms, closets, and utility rooms. They are not typically recommended for exterior use, as they may not provide the same level of insulation, security, or weather resistance as specialized exterior doors.
When choosing flush doors, it's important to consider factors such as the material used, fire resistance ratings if required, and the overall quality of construction to ensure durability and performance.
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