Selasa, 20 Desember 2011

A Guide to Buying the CCTV Security Systems

A close circuit Television is a great way of Surveillance. Be it the home, office or your store, CCTV Security systems have become an ideal choice for protection of loved ones and fighting against crimes. Close circuittelevisions are basically cameras where video images of a particular place are recorded on to another device. A close circuit television video feedback can be watched at real-time, or it can be watched anytime later.
CCD Sensor used inside a consumer-digicam
Types While buying a CCTV security, one should first decide what type he/she wants! Unlike men, close circuit televisions were not created equal. There are many types of close circuit television available. The first classification would be analog or digital. The former records the images on a television set or aVCR and the later records it on to some memory device such as a memory card, CDDVD and any digital media and can be wired at distances and can be watched at computers. There are alsoCMOS and CCD cameras according to the image sensor within the camera. While CMOScameras are cheaper, CCD cameras offer a sharper and finer video quality. CCTV cameras can be found in black-n-white and in colors, where each has specific places of application. Other types include night-vision (IR) cameras, wired/wireless cameras, motion detection cameras, IP cameras (network camera systems). Many cameras have face detection technology and many can see images for a larger area clearly or of a smaller area clearly.

Kamis, 15 Desember 2011

Sejarah CCTV

CCTV pertama kali digunakan oleh militer Amerika Serikat di tahun 1940-an. kamera sirkuit tertutup dibentuk selama pengujian rudal V2 untuk memonitor tes aman.Dengan menggunakan CCTV, petugas bisa memantau pengujian jarak dekat tanpa bahaya, mengawasi cacat dan masalah lainnya yang mungkin telah dinyatakan tak terdeteksi.