DVR vs. CCTV
CCTV's are acceptable for use over short time periods. However, for longer time periods and for continuous time spans, CCTV's are not as capable as DVR systems. |
|
|
|
Weaknesses of conventional CCTV systems:
-
Image deterioration during long periods of operation
-
Constant purchase of analog video tapes
-
Blank video tapes must constantly be reloaded
-
May miss recording a vital image during tape reload
-
Image search on a video tape is very time consuming
|
|
|
|
Advantages of DVR systems:
-
No image deterioration
-
High quality pictures all the time
-
Convenience of not having to load blank video tapes
-
All data centrally saved on hard drive (no need for multiple tapes)
-
Can search for images by date, time and specific camera
-
Camera control is accomplished through software
-
Can play video while still recording
-
For VCR accomplish the recording function is able to solve the problem of simple VCR as
below.
|
|
|
|
DVR vs. CCTV Summary Chart
|
|
DVR |
CCTV |
|
Record |
Digital |
Analog |
|
Storage |
Hard Disk |
Tape |
|
Surveillant motion |
YES |
NO (request add part) |
|
Division of screen |
Multi (1,4,9,16) |
Quad requested |
|
Control PTZ camera |
RS232 (Serial Port) |
TX requested |
|
Image reproduction |
Clear |
Unclear |
|
Created schedule of record |
YES |
NO |
|
Search |
YES |
NO |
|
Search for random |
YES |
NO |
|
Print |
YES |
NO |
|
Search for image devises |
YES |
NO |
|
Electric transmission |
Send image through Network |
NO | | |
