Introduction to CCTV systems

-

Well, let us now know what is CCTV. CCTV stands for Closed Circuit Television. That means closed-circuit television. It got this name because it provides frames to only a few TV screens from the respective cameras. That is because it does not transmit the image frames outside like normal television transmission. This field, which has quite a history, has made great progress today. There are two main CCTV technologies in use today

1. DVR CCTV systems

2. NVR CCTV systems

Let's talk about DVR CCTV systems first

DVR CCTV systems





Now let's see what are the basics of this system. Let's see more details later

1. Cameras



There are various types of cameras used in a CCTV system depending on the purpose. Camera types will be discussed in a later post.  

2. Video Recorder


Used to record input from the cameras. In the early stages, video cassettes(VCRs) were used to record the videos. In modern days Hard disks are used to record the videos and the unit is called Digital Video Recorder(DVR). More information regards this will be discussed later.

3. Monitor

The monitor is mainly used to view current video footage of the cameras or recorded video footage in the recorder. Even early stages a specific monitor was used in CCTV systems, modern days no special monitor is required. A computer monitor or a modern LED/LCD TV can be used as a monitor.      



Comments

Post a Comment

Popular posts from this blog

PRIVACY POLICY

-
  PRIVACY POLICY Last updated January 01, 2025 This Privacy Notice for All-in-One Stop ('we', 'us', or 'our'), describes how and why we might access, collect, store, use, and/or share ('process') your personal information when you use our services ('Services'), including when you: Download and use our Facebook application or any other application of ours that links to this Privacy Notice Engage with us in other related ways, including any sales, marketing, or events Questions or concerns? Reading this Privacy Notice will help you understand your privacy rights and choices. We are responsible for making decisions about how your personal information is processed. If you do not agree with our policies and practices, please do not use our Services. SUMMARY OF KEY POINTS This summary provides key points from our Privacy Notice, but you can find out more details about any of these topics by clicking the link following each key point or b...
Read more

Comparison between DVR based CCTV system and NVR based CCTV system

-
Image
Finally, let us compare both DVR-based CCTV systems and NVR-based CCTV systems with the following factors.  1. Cost  When it comes to cost a DVR-based based CCTV system is cheaper than an N VR-based based CCTV system. This is due to the NVR being more expensive than an equal DVR and equal-quality IP cameras are expensive compared to analog cameras in a DVR system. Alternatively, you may require an additional POE switch which may be needed to purchase with additional cost. 2.  Picture Quality Picture quality is higher in an NVR system. Cameras in  an NVR system produce higher-resolution pictures than a DVR system. Unlike analog cameras in a DVR system IP cameras produce digital images with digital image processing. Due to that fact, the picture quality is much higher in an NVR system. 3. Accessibility through network Although modern DVR-based systems can be accessible limitedly through a network best option for Internet accessibility is NVR-based CCTV systems. An NVR-...
Read more