What is ccHDTV?
ccHDTV is a new protocol and standard for digital HD surveillance solutions. It is 100% supported and developed by ITE Tech Inc.
ccHDTV closely parallels IP for digital surveillance. The video format of ccHDTV cameras and IP cameras are exactly the same. The only major difference is the transmission technology. While IP cameras use Internet Protocol to deliver digital videos, ccHDTV cameras use digital TV (DTV) broadcasting technology. The technology support transmission on coaxial cables, Ethernet cables, twisted pairs, optional fibers, and many others. It also supports wireless transmission.
In the analog era, CVBS is the signal format for TV, and also for cctv (closed-circuit television) surveillance systems. After TV's analog switch off (ASO), countries worldwide have adopted their own digital TV standards. Among them, DVB-T and ISDB-T are the most popular. They are therefore chosen as the transmission technology for ccHDTV.
The DTV standards are by nature developed for digital audio and video transmission. They bring many benefits when used in digital surveillance systems. For example, frequency division multiplexing (frequency channels) allows transmission of multiple HD or UHD (1080p30, 1080p60, 4K, and so on) digital video signals over a single coaxial cable. And video compression before transmission greatly reduces the complexity of the receiver and storage device.
Because of the advanced digital transmission technology, actual installations show that the transmission distance is at least 1000 meters over 5C2V/RG6 coaxial cables, or at least 500 meters over a lower quality 3C2V/RG59 cable. No signal amplifier or booster was required within the above specified distance.
In addition, since both ccHDTV and cctv are based on TV systems, the similarity in installation and operation makes it easy for upgrades from analog to HD or UHD digital surveillance systems.
ccHDTV products (DTV products for short) are readily available and widely used in sites where re-cabling is difficult or increasing the numbers of cameras is required. DTV products have been integrated into systems such as access control, alarm, and fence sensor security system.