Analytically the abbreviation could also mean:
Exclusive area small screen TV set as derived from Harper Collins Publishers Ltd Dictionary
The first CCTV system was installed by Siemens AG at Test Stand VII in Peenemünde, Germany in 1942, for observing the launch of the V2-rockets.
This is one of the fastest growing markets in the history of security. It is overflowing with new products and suppliers each day. Many usages are found in Industrial processes that take place under conditions dangerous for humans or to fast for the human eye to see, are today often supervised by CCTV. Alarman will expand our Automation category to include some of the CCTV products used for industrial Automation.
Reducing your Asset Shrinkage through intelligent CCTV Surveillance
Retention, storage and preservation of CCTV Image
The long-term storage and archiving of CCTV recordings is an issue of concern in the implementation of a CCTV system. Outdated re-usable media such as tape may be cycled through the recording process at regular intervals. However, individual recordings may be retained for indefinite periods for use in investigations or as evidence in legal proceedings. The modern trend is to record to a NAS (Network Access Storage) via the client network, if it is fast enough. The NAS require high throughput networks.
See POE Switches.
Recordings are kept for several purposes.
Firstly, the primary purpose for which they were created are to monitor a person, process or facility.
Secondly, they need to be preserved for a reasonable amount of time to recover an evidence of other important activity they might document (e.g.., a group of people passing a facility on the night a crime was committed).
Finally, the recordings may be valuated for historical, research or other long-term information of value they may contain samples kept to help understand trends of a business, sleep patterns or community activity.
Recordings are more commonly stored using hard disk drives in lieu of the outdated video cassette recorders. The quality of digital recordings is subject to compression ratios, images stored per second, image size and duration of image retention before being overwritten. Different manufacturers of digital video recorders us different compression standards and varying compression ratios but the new H.265 compression is the latest general purpose standard and can be seen as the present industry standard for CCTV recording.
The addition of the 960H format did improve picture quality in comparison with the older 700TVL cameras. This, unfortunately don’t compare even closely to the low end HD 720p image of the high definition digital IP systems. The days of the analogue system was revived with the introduction of the AHD equipment. We can now compare image quality to the same size IP devises and almost unnoticeable quality difference with the new 4MP AHD camera and DVR. Viewing still remain on 1080p for the AHD DVR's but can be zoomed to view the full defenition.
The latest trend is not the view and record of 1080p (2MP derived from 1920 x 1080 pixels) quality images, but to move on to 4MP images. The latest 4K technology just became available, and at an affordable price! 4MP and 5MP cameras and NVR's are also finding some place in the market for high-end applications. This require huge recording space and 6-24TB hard drives or (Network Access Storage=NAS) are in the order of the day. Alarman can assist with all of these CCTV equipment and network technology. We can link multiple cameras via professional wireless links up to 10km from the base, providing we have "Line-of-Sight".
Alarman only sell quality CCTV products with a proper warranty from reputable importers and manufacturers, this assure long relationships between our customers and ourself. Please view our new IP CCTV range of products that include the new 4MP equipment. The analog equipment are mostly AHD std. with true 720p/1080p or better capability. Also view the "new plug and play" IP cameras for remote monitoring.