Post on 25-Oct-2015
CHAPTER 2: Literature Review
INTRODUCTION
In this chapter, we will provide a literature review on our main research focus which is how
CCTV system is installing and how the system works. This chapter will divide into three parts.
The first part of this chapter will explain the jargon or definition of term to the reader. The
second part is to provide an internet research by referring to a journal or article and the last part
is from book and magazine.
2.1 The definition of term
2.1.1 CCTV
Closed-circuit television (CCTV) is the use of video cameras to transmit a signal to a specific
place, on a limited set of monitors. It differs from broadcast television in that the signal is not
openly transmitted, though it may employ point to point (P2P), point to multipoint, or mesh
wireless links. CCTV is often used for surveillance in areas that may need monitoring such as
banks, casinos, airports, military installations, and convenience stores. It is also an important tool
for distance education.
2.1.2 ANALOGUE
Analogue (or analog in American English) are electronic systems with a continuously variable
signal, in contrast to digital electronics where signals usually take only two different levels. The
term "analogue" describes the proportional relationship between a signal and a voltage or current
that represents the signal. The word analogue is derived from the Greek word ανάλογος
(analogos) meaning "proportional".
2.1.3 DECODER
A decoder is a device which does the reverse of an encoder, undoing the encoding so that the
original information can be retrieved. The same method used to encode is usually just reversed in
order to decode.
2.1.4 BNC CABLE
A connector for a coaxial cable which keeps the central wire from touching the cable's outer
shield
2.2 INTERNET RESEARCH/REFERENCES
2.2.1 The Evolution of CCTV Surveillance
According to the article The Evolution of CCTV Surveillance from the writer John Beagle
“CCTV has certainly come a long way since the 1960s; it's clear that the future of CCTV is
secure and that technology will continue to develop to meet the needs of the surveillance
market.”
2.2.2 CCTV System - The Advantages and the Disadvantages
According to the article CCTV System - The Advantages and the Disadvantages from the writer
Lazaro J Hester “to monitor activities in a room or building. Mostly, it is installed in department
store to monitor the visitors so they can prevent any thief to steal anything from their racks.
Besides, this system also might be installed in school and office to monitor the behavior of
students and employee”.
2.2.3 Converting your Analog CCTV System to a Digital Video Recording System: Factors
to Consider
According to the article converting your Analog CCTV System to a Digital Video Recording
System: Factors to Consider from the writer Kumara Velu
“CCTV system by the remote monitoring system facility (viewing what’s happening at your site
without being there) a digital system provides. You can connect your cameras to a network
equipped with a video server, allowing you to store your video images there. This facility also
allows you to view your surveillance video footage from any computer in the network. If you’re
connected to the Internet, you can view surveillance footage from anywhere in the world.”
2.3 BOOK AND MAGAZINES
2.3.1
Vlado Damjanovski,2005 CCTV networking and digital technology 2nd Edition United States of
America :Butterworth-Heinemenn.
Figure 2.3.1
2.3.2
Herman Kruegle, 1995 CCTV surveillance United States of America :Butterworth-Heinemenn.
Figure 2.3.2
2.3.3
Professor Martin Gill, Jan 2003 CCTV United States of America: Palgrave Macmillan.
Figure 2.3.3
2.3.4
Benjamin J. Goold , Feb 2004 CCTV AND POLICING public area surveillance and police
practices in Britain, Britain: Oxford.
Figure 2.3.4
2.3.5
Emily M. Harwood, Feb 2008 Digital CCTV, United States of America :Butterworth-
Heinemenn.
CONCLUSION
CCTV (Closed Circuit Television) is a visual surveillance technology designed for monitoring a
variety of environments and activities. CCTV systems typically involve a fixed communications
link between cameras and monitors.
The modern CCTV system involves a linked system of cameras with full pan, tilt, and zooms
able to be operated remotely from a control room.
The basic CCTV system can be divided into three components: A camera, a monitor and a time
lapse recording mechanism (usually made in VCR or DVR formats). These are only the
fundamental components. For larger areas or for real-time monitoring you will probably need to
add cameras, monitors and other special devices. For a common size household, the most
suitable system is a quad cam. This basic kit consists of four wireless surveillance cameras, a
small monitor and a recording device. The camera kits vary depending on their use. Some
camera kits can be used on a computer, taking advantage of its monitor and memory. Others
have a monitor and a time lapse VCR in the same console.