This document provides an overview of CCTV (closed-circuit television) systems, including:
- CCTV architecture which involves cameras transmitting signals to monitors through either wired or wireless connections.
- Digital CCTV uses video compression and network transmission over Ethernet, allowing for remote access and storage.
- IP cameras transmit video over internet protocols, increasing flexibility but requiring a private network for security.
- CCTV is used widely in industrial plants, buildings, public areas, and transportation for security and surveillance. Applications discussed include toll gates, apartments, factories, airports, and military areas.