Indian gas company deploys Livedarshan Solution at 1,000 stations

Indian gas company deploys Livedarshan Solution at 1,000 stations
IP Solutions

Tuesday, 27 October 2009

IP vs Analog - What your system provider wont tell you

IP Cameras
1.End to interlace problems
·         Interlaced scan
·         Each image formed from two interlace fields
·         Blurriness from capturing moving objects, even when connected to a DVR
·         Progressive Scan
·         Entire image captured at one time
·         Crystal clear images even with a high degree of motion in the scene
2.Megapixel resolution
  • Stuck with NTSC/PAL resolution
  • 0.4 Megapixel at 4CIF and 0.1 at CIF
  • Limited image details

  • Many resolutions
  • 1 Megapixel is 10x the resolution of CIF, 2 Megapixel is 20x!
  • Different aspect ratios
  • Digital PTZ
3.Integrated PTZ  and I/O control and storage
  • Analog cameras need separate Rs-485 cable and equipment(joystick) for control)
  • Costly and cumbersome
  • I/O only possible in DVR not on camera
  • Recording not possible onboard camera.So if DVR is shut all lost.
  • PTZ control over the same network
    that transports the video
  • PTZ commands sent over the IP network
  • Integrated I/O can
    • Trigger anything
    • Can be triggered by anything
  • Only possible with separate audio lines to the DVR

  • Audio captured at the camera
  • Synchronized with the video
  • Can be integrated into the same
    video stream
  • 2-way audio
    (Duplex, Half Duplex, Simplex)
5.Secure Communication
  • No encryption
  • Video encryption
  • Authentication using encrypted
  • Authorization: to verify and approve
    the identity of the device
  • Privacy watermarks
6.Flexible cost effective infrastructure
  • Expensive coax, proprietary fiber, wireless
  • Distance affects image quality
  • Adding power, I/O and audio further complicates this situation

·         IP = established, standardized,
·         Digital images = no quality reduction
·         Many streams transmitted over the
same line
·         A single network wire = hundreds of simultaneous full frame rate video streams
7.True Digital Solution
  • With every conversion image quality is lost:
    • Analog signal digitized in camera’s DSP
    • Analog signal converted back to analog for transport over coax
Signal once again digitized at the DVR for recording
  • Images digitized once
  • Stay digital
  • No unnecessary conversions
  • No image degradation

  • Not Available
  • Both network cameras with and without
    built-in support for PoE can take
    advantage of a UPS device
  • Cost savings
  • Reliability with centralized power backup
  • Simple installation


Meow Technologies said...

For CCTV related Doubts,Tips,Tricks pls visit,You can also ask about various CCTV related doubts

Cyber Secure said...

Cyber fire and security provides Low cost professional CCTV installation London. High Quality HD Cameras. CCTV Installers London, CCTV Camera London, cost effective security camera installations and maintenance contracts for your home, business or vehicles. To establish Securicor CCTV as the UK's leading online CCTV companies London. We offer professional security systems, burglar alarms London, security cameras, ip CCTV and CCTV installation in London.
CCTV Installation London

Search This Blog