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Giải pháp sử dụng Camera

Those days monitoring activities using camera is becoming more and more popular. There are different solutions applied to specific customers and demands like : CCTV for school, home family, shopping centre, factories….

In a nutshell, we can categorise them to three main systems : analog camera, IP camera and the hybrid technology consisted of analog and IP. Those main attributes are :

1. Analog Camera System:

1)      The camera captures analog signal and then transmit them on cable to DVR. Each camera can be power supplied by DC sources or by a converter using power sources and CAT5e cable. DVR converts analog signals to digital signal, compress and store in a HDD so it can be played later. Smart features integrated to DVR to do something like schedule, movement detection, digital zooming.

 

Surveillance monitor is connected directly with DVR or can be configured to transmit signal on a LAN or Internet, so the video can be viewed on a computer or a smartphone. When signals go through a LAN or Internet, signals for all camera come across a data thread with one IP address. DVR also compresses camera signal to reduce bandwidth usage.

Analog Camera model

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2. IP Camera System:

An IP camera is a networked digital video camera that transmits data over a Fast Ethernet link. IP cameras (also called "network cameras") are most often used for IP surveillance, a digitized and networked version of closed-circuit television (CCTV).

Benefits of IP camera over analog technology include:

  • Remote administration from any location.
  • Digital zoom.
  • The ability to easily send images and video anywhere with an Internet connection.
  • Progressive scanning, which enables better quality images extracted from the video, especially for moving targets.
  • Adjustable frame rates and resolution to meet specific needs.
  • Two-way communication.
  • The ability to send alerts if suspicious activity is detected.
  • Lower cabling requirements.
  • Support for intelligent video.

Disadvantages of IP surveillance include greater complexity and bandwidth demands. One alternative for organizations with substantial investment in analog technology is to use a video server to, in effect, turn analog CCTV cameras to IP cameras. A video server is a small standalone server that converts analog signals to a digital format and provides the analog cameras with IP addresses.

Nevertheless, because it offers much more sophisticated capabilities, IP surveillance is increasingly replacing analog CCTV. An industry report from International Data Corporation (IDC) predicts that shipments of IP cameras and related products will increase 45% between 2009 and 2013.

 IP Camera modelling

 giaiphapnew2

 

3. Analog + IP Camera:

Another better solution can be used is a solution combined of analog and IP camera, it has all benefits of analog and IP solutions. It allows you to use the combination of DVR, IP and analog camera. This is the perfect solutions for big business, restaurant chain, hospital building, school, main office and even industry environment.

 A model of Analog and IP Camera

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Contact us:
SmallNET Support Centre: P1611, 18T1 Lê Văn Lương, Hà Nội 
Phone: (04) 62510292 | Fax : (04) 62510646
Hotline0913 524 230 (Mr Dương)
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1)      The camera captures analog signal and then transmit them on cable to DVR. Each camera can be power supplied by DC sources or by a converter using power sources and CAT5e cable. DVR converts analog signals to digital signal, compress and store in a HDD so it can be played later. Smart features integrated to DVR to do something like schedule, movement detection, digital zooming.

Surveillance monitor is connected directly with DVR or can be configured to transmit signal on a LAN or Internet, so the video can be viewed on a computer or a smartphone. When signals go through a LAN or Internet, signals for all camera come across a data thread with one IP address. DVR also compresses camera signal to reduce bandwidth usage.

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