1. TV System :PAL/NTSC is for color system.     

PAL is a color television system, which is used in Europe, Australia , parts of Africa and the Middle East . It has 625 horizontal scan lines and 25 frames per second. (Frame: A whole video image; is composed of two interlaced fields. A CCD chip produces 30 frames per second at NTSC system and 25 frames at PAL. )

     NTSC formulates standards for American color television system. NTSC system has 525 horizontal scan lines and 30 frames per second.

2.RCA 

      The Radio Corporation of America; conveniently used to describe phone jack and plug, one of the audio/video connectors.

3. Resolution
      Expressed by TV lines or pixels, it indicates the quality level of video images.
<Camera Resolution>
      The industry of CCD video camera sensor uses pixels (picture elements) as its quality parameter. Medium resolution of B/W camera in EIA system is 510 horizontal pixels by 492 vertical pixels and is equivalent to 380 TV lines. High resolution is 768(H) x 492(V) pixels and equivalent to 570 TV lines. Color camera's medium resolution means 330TV lines and high resolution needs more than 460 TV lines.

<Monitor Resolution>
      The monitors in NTSC system have 525 vertical scanning lines regardless of their size. The horizontal 700 TV lines of B/W monitors represents medium level and more than 900 TV lines means high resolution in EIA system. The color monitor's horizontal resolution of 300 TV lines means medium quality and that of more than 450 TV lines means high resolution.

4. Infrared Light

      Invisible light beyong the 750 nanometers (red end of the visible lights)

5. BLC

      According to special area of measuring light and adjust the electrical shutter, the exposal value will be normal in the measuring area.

A 

Anti glare cabinet
There are many monitors on the market which do not have an anti-glare monitor cabinet. These can reflect against the windshield. 

Auto brightness control
Brightness adjustment of the screen at twilight in order to avoid blinding the driver. MOBITRONIC systems are operated via the headlights.

AUTOMATIC GAIN CONTROL (AGC) 
- An electronic circuit used by which the gain of a signal is automatically adjusted as a function of its input or other specified parameter

AUTO WHITE BALANCE
- A feature on color camera that constantly monitors the light and adjusts its color to maintain white areas.

B 

Background noise
Every electronic appliance produces a basic noise (internal interference). The effective signal, e.g., the video signal, should have the highest possible norm (usually 45 dB) so as to not be disturbed by basic noises.

B.L.C. (Back light compensation) 
Compensation for oncoming lights blending out oncoming lights by way of an additional filter level of the automatic iris control (EI).

Bracket
An electrically-insulated installation of the camera bracket to the vehicles body is recommended in order to avoid interference from random radiation.

C 

  CCD picture sensor
Picture acquisition sensor on a semiconductor basis, waterproof, diameter 1/3 and 1/4 inch.

CE mark
Europe-wide mark obligatory inspection of electronic appliances for electromagnetic compatibility(resistance to interference and interfering radiation). Basis for the CE-mark are approvals of home appliances.

CMOS sensor
Complementary Metal Oxide Semiconductor, image acquisition sensor. Lower price but inferior performance when compared with CCD image sensors. 

D 

Distance mark 
Stickers with guiding lines to help in determining the exact distance from the obstacle. High quality systems are equipped to phase in and shift these guiding lines electronically.

E 

E-mark  
Compatibility approval designed specially for automobiles. Is obligatory as have October 2002 and replaces the CE-inspection. 

H 
HORIZONTAL RESOLUTION  
- The maximum number of individual picture elements that can be distinguished in a single
scanning line. 

I  

IP (internal protection)  
Standard describing the tightness of cabinets.
IP 64 - splash-proof
IP 65 - hose-proof
IP 66 - resistant to strong water jets
IP 67 - resistant to temporary submersion
IP 68 - resistant to long-term submersion
IP 69K - resistant to high pressure cleaning
Note: Water can, however, seep into the camera as a result of capillary effect in the camera cables. These standards do not apply to the condensate information in the camera! 

L 

LCD monitors

Latest generation monitors with liquid crystal displays (LCD) offer the advantages of saving space and providing a color display The LCD monitors have a somewhat weaker lighting than the CRT monitors. The light intensity should be at least 250 cd/m2 

Lens  
The image sensor used (1/3", 1/4") and the focal distance of the lens determine the displayed field of vision. The smaller the focal distance, the larger the field of vision. 

O 

Operating voltage (DC voltage/power source) 
Needed power for the monitor. The systems that can operate within the voltage range of 11-32 volts are very convenient. 

P 

Picture points (pixels)

The more picture points a CCD sensor has, the higher is the picture resolution and image contrast and hence the picture definition. 

Picture reflection (normal/mirror)
The camera picture will be mirrored upon pressing the button. That means what was previously on the left side of the screen is now on the right side. It will be necessary to make a distinction, when a second camera views the front. It is imperative, though, to make a distinction in the case of differing camera positions in order to to be able to maintain the picture on the proper side. 

R 

RESOLUTION
- A measure of the ability of a camera or television system to reproduce detail. That is the number of picture elements that can be reproduced with good definition. It is a factor of the pickup device or the TV CRT characteristics and the video signal bandwidth.

V 

Vibration resistance
Reversing video systems have to be able to sustain all kinds of bumps and shaking. A norm for measuring vibrations is 'g' - gravitation acceleration. The norms of standard systems are 4-5g. Heavy-duty systems have norms of up to 10g. 

Video signal
Analogue signal required for image transmission. Most systems use an analogue video signal to transmit pictures. Interference-free transmission is only possible via special cables at a limited length.