First Era: Analog Video Surveillance Age
The era of analog video surveillance had its genesis primarily in the 1970s, marking the inception of video surveillance technology. During this epoch, the primary equipment for video surveillance involved analog transmissions using coaxial cables, controlled from a central unit, and storage relied on VCRs. However, the limitations of VCR tape storage necessitated frequent changes of tapes to ensure long-term storage of video footage. In this analog video surveillance age, constraints in storage space gave rise to issues such as low automation efficiency and sluggish video retrieval, demanding solutions.
Second Era: Semi-Digital Video Surveillance Age
The semi-digital video surveillance age emerged in the 1990s, with DVRs (Digital Video Recorders) playing a central role. DVRs stood as the defining products of this era. They took analog video signals and digitized them for storage. This age witnessed the replacement of VCRs by DVRs, effectively addressing issues inherited from the analog era, including low automation efficiency and slow retrieval.
Third Era: Fully Digital (Network) Video Surveillance Age
The fully digital video surveillance era, often referred to as the intelligent network video surveillance age, is characterized by open and decentralized video surveillance systems. Unlike previous eras, there is no singular central hardware device in this age. Key equipment includes video encoders, network cameras, and central management platforms. In the fully digital video surveillance age, video content analysis technology is predominantly used for network video storage, playback, and transmission. This empowers video surveillance systems to perform scheduling, command, and control functions more efficiently and effectively.
The era of analog video surveillance had its genesis primarily in the 1970s, marking the inception of video surveillance technology. During this epoch, the primary equipment for video surveillance involved analog transmissions using coaxial cables, controlled from a central unit, and storage relied on VCRs. However, the limitations of VCR tape storage necessitated frequent changes of tapes to ensure long-term storage of video footage. In this analog video surveillance age, constraints in storage space gave rise to issues such as low automation efficiency and sluggish video retrieval, demanding solutions.
Second Era: Semi-Digital Video Surveillance Age
The semi-digital video surveillance age emerged in the 1990s, with DVRs (Digital Video Recorders) playing a central role. DVRs stood as the defining products of this era. They took analog video signals and digitized them for storage. This age witnessed the replacement of VCRs by DVRs, effectively addressing issues inherited from the analog era, including low automation efficiency and slow retrieval.
Third Era: Fully Digital (Network) Video Surveillance Age
The fully digital video surveillance era, often referred to as the intelligent network video surveillance age, is characterized by open and decentralized video surveillance systems. Unlike previous eras, there is no singular central hardware device in this age. Key equipment includes video encoders, network cameras, and central management platforms. In the fully digital video surveillance age, video content analysis technology is predominantly used for network video storage, playback, and transmission. This empowers video surveillance systems to perform scheduling, command, and control functions more efficiently and effectively.
