Introduction of Video Surveillance Networks

Emily Harwood, DIGITAL CCTV - A Security Professionals Guide, Butterworth-Heinemann, Elsevier Inc., 2008

- 1 CCTV () CCTV Cameras + (coax-cable) + (monitor) (playback) (Multiplexer)(Analog Monitor) Video Cassette Recorder (VCR)coax-cable

- 2 ( e ) CCTV Cameras + DVR ( + + )

() EthernetAlarm I/OMonitorDVR( Multiplexer)(Image Source: Mobotix)Camerascoax-cablecoax-cable

- 3 ()IP camera + (Networking Video Recording; NVR)

( IP camera) (Image Source: MIT CSAIL)

- 4 (www.ASMAG.com)

DVR (Digital Video Recorder) - 1 (Digital Video Recorder; DVR) CCTV Multiplexer VCR

DVR (analog camera) (playback)

JPEGMotion-JPEG MPEG-4 H.264

(frame rate, fps)

4 channels (camera ) 16 channels

(hard disk) (rollback)

DVR (Digital Video Recorder) - 2DVR (embedded stand-alone) PC (PC-based) CPU DSP

DVR (motion detection) DVR

()

DVR (Digital Video Recorder) - 3DVR (IO) (Alarm) IO DI/DO (Digital In / Digital Out) RS485

Internet () IO

PTZ (Pan, Tile & Zoom) Camera DVR RS485 Camera

DVR (Digital Video Recorder) - 4DVR PTZ (Pan, Tile, Zoom) Camera (www.signalsync.com)

DVR (Digital Video Recorder) - 5DVR (www.secom.com.tw) (motion detection)

- 1 (NIC ) (Ethernet)

(Internet) (ADSL) (Cable Modem) (GPRS 3G) (Wi-Fi )Internet ()

- 2 Internet (Local Area Network; LAN)

LAN

(hub)

(switch)

- 3LAN (Wide Area Network; WAN Internet)

(router)

(firewall) router router EthernetSwitchLAN ()ADSL Internet ()

- 4 (bandwidth)

100M bps (bits per seconds) (Internet) 10M bps

1.5M bps VCD

- 5 IP address () IP Internet Protocol IP address 4 bytes ( 6 bytes)

(World Wide Web; www) Internet www.google.com IP address 209.85.175.99 bytes ( bytes: 0 ~ 255)

IP address (dynamic address)

( )

DVR - 1DVR DVR (LAN) (WAN, Internet) DVRCCD CameraSwitchCableEthernet MonitorLAN ()Internet ()

DVR - 2 DVR (LAN)

(LAN) () (monitor)

DVR DVR

(WAN) ()

IP-Cam () - 1IP-Cam (IP Camera) (network camera) () camera IP Internet Protocol

Ethernet (wireless LAN, WiFi network)

IP-Cam

(speed dome)

IP-Cam () - 2 IP-Cam DVR DVR

DVR (coax-cable) cameras IP-Cam camera

DVR (monitor) (cable) IP-Cam PC

DVR DVR ()IP-Cam IP-Cam ( DVR ) IP-Cam (Network Video Recording; NVR)

DVR IP-Cam NVR (Server)

IP-Cam - 1IP-Cam IP-Cam camera

IP-Cam () LAN ()Internet ()

IP-Cam - 2 IP-Cam IP address IP-Cam ( PAD )

IP-Cam camera IP address IP-Cam

IP-Cam ( + ) NVR (Network Video Recording)

IP-Cam NVR

IP-Cam/NVR - 1IP-Cam NVR (Server) (http://512dsl.hinet.net/VRS/)

IP-Cam/NVR - 2IP-Cam Internet (LAN) Internet IP-Cam NVR

NVR (Server) (Internet) NVR

IP-Cam/NVR - 3IP-Cam NVR

IP-Cam NVR ()NVR IP-Cam

NVR IP address IP-Cam NVR

IP-Cam NVR IP-Cam

IP-Cam NVR (protocol) (audio/video streaming)

IP-Cam/NVR - 4IP-Cam

Internet ( PAD ) NVR () IP-Cam

NVR (streaming server)

PC D1 (640 480) QCIF (176 120)

IP-Cam/NVR (Internet)

IP-Cam/NVR - 5 ( PAD ) IP-Cam (streaming server) NVR IP-Cam

NVR IP-Cam ( PAD ) IP-Cam

NVR

IP-Cam/NVR - 1NVR (Server) (http://512dsl.hinet.net/VRS/)

IP-Cam/NVR - 2IP-Cam (sensors)

(web server) IP-Cam IP-Cam IP-Cam (sensor)

(event server) IP-Cam IP-Cam (reed switch) IP-Cam

(Database; DB server) IP-Cam

- 1 CCTV

IP-Cam/NVR (intelligent) (integration)

(intelligent) camera (sensors)

- 2 (integration) (Internet) (Information Technology; IT)