The History of Surveillance Cameras
Surveillance camera, a small electrical appliance that can be seen almost everywhere in our country’s daily life, with traces to follow, the machine itself is not big, but because of its unique functions, it plays an important role in the world, and nowadays In the era of interconnection and rapid development of network information, not only is the sales of outdoor surveillance cameras rising year by year, but even indoor surveillance cameras have been penetrated by major 3C brands, and they have entered this new field.
So, the origin of surveillance cameras? The iterative development of surveillance cameras? And what will be its future development direction?
1. The origin of surveillance cameras:
The world's first camera appeared in 1874, invented by French astronomer Jules Jeansant;
The first place in the world where surveillance mirrors were exported was in 1942;
The world's earliest electronic monitoring system was invented by Americans in 1957. At first, only black and white monitoring was available, and video recording was not possible;
The world's first video surveillance system appeared in 1968;
The world's first color monitor was born in 1976, and the UK was the first country to popularize surveillance;
my country first introduced surveillance technology in 1987;
2. Historical development of surveillance cameras:
Generation 1: Traditional analog closed-circuit video surveillance (CCTV) systems that rely on specialized equipment such as cameras, cables, VCRs, and monitors. For example, the camera outputs video signals through a dedicated coaxial cable, which is connected to dedicated analog video equipment, such as video screen splitters, matrixes, switchers, video cassette recorders (VCRs), and video monitors;
The second generation: the current "analog-digital" monitoring system (DVR), the "analog-digital" monitoring system is a half-analog-half-digital solution based on a digital hard disk video recorder DVR, and still uses coaxial cable to output video signals from the camera to the DVR , supports both recording and playback through DVR, and can support limited IP network access, complex wiring "analog-digital" solution still requires a separate video cable to be installed on each camera, resulting in wiring complexity, limited scalability The typical limitation of DVR is Only a maximum of 32 cameras can be extended at a time;
The third generation: the future full IP video surveillance system IPVS, there is a significant difference between the full IP video surveillance system and the previous two schemes, the advantage of this system is that the camera has a built-in Web server, and directly provides an Ethernet port, these cameras can generate JPEG or MPEG4 data files that can be accessed, monitored, recorded and printed by any authorized client from anywhere in the network, instead of generating images in the form of continuous analog video signals;
3. The future development direction of surveillance cameras
Entering the new era of IP, surveillance cameras are gradually moving towards a new stage of "four modernizations", front-end integration, transmission networking, processing digitization, and system integration. Life, safety and security and other fields show their increasingly important functions and social roles;
It has been nearly 150 years since the development of surveillance cameras. While it has many advantages and benefits, it has also caused many negative effects, such as infringement, privacy and security issues.
Of course, everything has its two sides. If you want to buy a trustworthy smart outdoor or home camera, you must choose a big brand and protect it with "core" The privacy and security of yourself and your family.
