Now we hear about digital homes, digital cities, etc. Digitalization is rewriting our lives, and in the intercom system market, this trend also exists. With the discovery of technology and the further improvement of user needs, traditional The analog intercom system can no longer meet the needs of real life, and the digital video intercom system came into being, so what is the digital intercom system? It mainly has three major elements: image compression, voice processing, network transmission, The digital video intercom is integrated with other home multimedia products. Now the digital intercom system is in a period of accelerated development both in the market and in technology, and has gradually become an important role in the digital home.

Compared with the traditional analog intercom system, the digital intercom system has the following advantages:

Simple wiring

Because the digital video intercom system uses TCP / IP to transmit sound, data, video and other signals, a single network cable can solve all problems, greatly simplifying the wiring project, and changing the installation and debugging of the residential intercom system. It is simple, and the construction period is greatly shortened.

Powerful networking function

The indoor unit of the digital video intercom system is like a small computer with both a high-performance CPU and a DSP digital processing chip. The powerful data processing capabilities make the networking function powerful and provide more integration for other security subsystems. More convenience.

Strong scalability

Digital video intercom systems can often not only realize video intercom, but also realize the functions of multimedia information transmission, broadcasting, security alarm, smart home, IP video phone, VOD on demand, image monitoring and value-added services. At the same time, it can also play a role in security monitoring.

low cost

The digital video intercom system adopts TCP / IP transmission during installation, commissioning and wiring, which can reduce a considerable investment, and shorten the construction period, save wire and labor costs, and easy to maintain, so it is costly Even more advantageous than traditional analog intercom system.

Due to the increasing demand for digital products in the market, digital video intercom has gradually become a trend. Many manufacturers also agree with the advantages of digital video intercom products and want to catch this "gold rush train". Many intercom manufacturers focused their attention on this earlier. Some manufacturers have already produced and sold digital video intercom products, and some are still in the research and development stage. However, the market for digital video intercom products is currently relatively mixed, with semi-digital and fake digital products flooding them, making digital video intercom products greatly discounted in users' minds.

So, how to distinguish the true and false of the digital visual system? It can be distinguished from the following points:

First, we must first investigate whether the standard TCP / IP protocol is adopted, and whether the transmitted audio and video signals are digital signals after encoding and compression processing.

Second, look at whether the intermediate equipment and networked equipment are universal: At present, some use special switches, and some rename the converters to switches, etc., all of which need to be distinguished. Generally speaking, real networked middleware can be purchased directly from the market. If it can only be purchased from the intercom system supplier, then it is definitely not a real digital product. The real digital products are standard and universal.

Third, look at the interface: when buying products, we should carefully observe the interface of the door machine, central management machine, indoor unit and wall machine to see whether the RJ-45 interface is used. If it is not the RJ-45 standard interface, it is definitely not a digital pair Speak equipment.