IPVS stands for IP Video Surveillance.  IP stands for Internet Protocol (see Keyword below for more explanation).  Video Survellance refers to remote monitoring of physical areas by security cameras.  IP Video Surveillance is a scheme of arrangement of cameras, connections, displaying and recording equipment.  The term has been loosely used in the industry.

Keywords and Meanings: 

• Adaptive Infrared
• Edge Storage
• Auto Zoom
• Wide Dynamic Range (WDR)
• Dual Streaming
• Digital Input Output (DIO)
• Passive IR for Intruder Detection
• CCTV
• Security Cameras
• Video Surveillance
• Analogue, Digital & IP Technologies
• VC, DV, NV Recorders
• CCD, CMOS Sensors
• Interlaced and Progressive Scanning
• PTZ Control Verses Digital Motion Tracking
• Day & Night Vision, Infra-red Vision
• CIF, D1 & Mega-pixel Frame Size
• MJPEG, MPEG4 and H.264 Compression
• Uni-cast, Broadcast & Multi-cast

• What benefit does IP Video Surveillance provide over analogue-based equipment?
• Why should we use megapixel cameras instead of D1?
• Would MPEG-4 provide higher-clarity images than M-JPEG would?
• Would NVR have the same image degradation problem as some DVR?
• Will a good camera be able to capture images in dim light?