The front end of the analog camera uses an interlaced CMOS/CCD sensor to convert the optical signal into an analog electrical signal, which is then output to a DSP. The DSP performs A/D conversion and color adjustment and then performs D/A conversion modulation into a PAL/NTSC television system. Signal output.
The network camera is a new generation camera that combines the analog camera and network technology. It has an embedded chip and uses an embedded real-time operating system. The digitized video signal from the camera is compressed by a highly efficient compression chip and transmitted to a Web server over a network bus. Authorized users can view, store, and manage video data locally or remotely through a standard IP-based network infrastructure.
Network cameras can be IP-networked, but analog cameras cannot, but this is only the most basic understanding. Specifically, analog cameras and network cameras have the following seven differences:
First, clarity
Seeing more clearly is the goal pursued by each user and the ultimate mission of the security industry. However, the current definition of network cameras and analog cameras cannot be the same.
Network Cameras: Currently, network cameras can already reach millions, 2 million, 5 million, or even 10 million pixels of image output.
Analog Camera: At present, analog cameras can only output images of CIF and D1.
Second, monitoring management
The webcam has built-in WEB. Using a standard web browser on a PC, it can manage and view images. At the same time, the network camera can also achieve remote management and image viewing, and the image data exists on the remote hard disk, easy to search, easy to store, will not be destroyed.
Analog cameras are relatively closed systems. They can only be monitored internally and cannot be remotely monitored. Video data can only be stored locally or viewed remotely, and is easily destroyed by criminals.
Third, integration
The built-in operating system of the network camera can manage and view images using the standard WEB browser on any PC, and can be shared with multi-screen management software to achieve multi-channel monitoring without limit. Does not increase the cost of hardware.
Analog cameras must be connected to DVRs. The number of DVR channels is limited. After the DVRs are fully loaded, the cost of the hardware is increased when the cameras are added.
Fourth, the installation of the camera
The webcam simply connects it to the nearest network and assigns an IP address. It can use the existing network as a transmission platform, not to go wiring.
The analog camera needs to connect the coaxial cable to each camera and connect it to the control platform, video equipment, and display equipment. Each new route must be rewired and no ready-made network is available.
Fifth, the realization of remote monitoring
Network cameras can be remotely managed, such as video settings, PTZ control, alarm settings, two-way intercom, upgrade management and other functions. Analog cameras can only manage images viewed locally.
Sixth, scalability
Network cameras can easily add more network cameras to the system. It is very difficult to expand the work of analog cameras. Each analog camera needs a dedicated cable, which affects the image quality when using long cables.
Seventh, cost expenditure
Network cameras and high quality network cables typically cost 30% to 40% less than standard coaxial cables. A network cable can support hundreds of network cameras and other devices at the same time. IP-based network infrastructures are often in place, which means that the cost of building a system can be reduced to include only the cost of a webcam.
For analog cameras, coaxial cables are very expensive, and the standard RG59750hms commonly used coaxial cables are 30% to 40% more expensive than high quality cables. And each analog camera needs a cable connection. If there are multiple cameras, they must buy a lot of cables and pay for the installation and deployment of these cables. Manpower and maintenance costs are higher, and the system construction cost will also include the cost of analog cameras and storage recording equipment.
Tool Belts
Tool belt is a piece of equipment used to hold and organize tools for easy access during work. Tool belts are commonly used by construction workers, carpenters, electricians, and other tradespeople who need quick access to their tools while working.
A typical tool belt consists of a belt made of leather or nylon with pockets or pouches attached to it. The pockets or pouches are designed to hold different types of tools, such as hammers, screwdrivers, pliers, and measuring tapes.
There are different types of tool belts available, including leather tool belts, nylon tool belts, and electrician tool belts. Some tool belts also have suspenders or shoulder straps to help distribute the weight of the tools more evenly and reduce strain on the back.
When choosing a tool belt, it is important to consider the type of work you will be doing and the types of tools you will need to carry. You should also consider the size and fit of the tool belt to ensure it is comfortable and does not interfere with your movements while working.
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