B backlight compensation (BLC)
Backlight compensation is based on specific regions of the meter to adjust electronic shutter (or automatic diaphragm), makes metering region exposure value normal.
D electronic shutter (Electronic Shutter)
Electronic shutter is a single signal processing. CCD camera is a major part of one.
In low light situations, CCD electronic shutter per second to 1 / 60 the speed of collecting information.
In the glare circumstances, CCD electronic shutter per second to 1 / 000 the speed of collecting information.
G Gamma coefficient (Gamma value)
Gamma factor is usually 0.45. Gamma factor changes, the images are compared with the changes.
J AC adapter (AC Adapter)
The AC adapter into AC power (the United States is 117 volts AC / 60 Hz), the output of 12 volts or 24 volts DC exchange.
12VDC
Most small black-and-white camera and 1 / 3 of the professional black and white video cameras in the 12-volt DC 100 -200 mA work. Color camera in the 12-volt DC 150 -300 mA work.
24VAC
About 2 / 3 of professional video cameras in 24 volts, or 20 volts -40 V exchange under the exchange of .24 V to transfer 450 feet long. Outdoor installation of video cameras in or near the camera no power, 24 volts AC adapter Is the first choice.
Focal length of the lens F, the focal length than a few f
F (focal length) that focal length of the lens. Focal length of the lens of the Algorithm: Kongju = (of distance / width of) * 4.5mm
For example: If you want to use 1 / 3 "CCD camera to see objects 10 feet, 5.5 feet wide, you need 8.8 mm focal length lens.
f (f-number) that the focal length than a few, such as f/1.2, f/2.0. focal length ratio = focal length / lens diameter. f number of smaller, the cameras and better lighting, display the image the better.
Q resolution (resolution)
TV with the clarity of images or as few lines to express.
Medium clarity of the EIA standard black-and-white camera for the 510 (H) * 492 (V) pixels, the equivalent of 380 TV lines.
And high-definition for 768 (H) * 492 (V) pixels, the equivalent of 570 TV lines.
Medium resolution color camera for the 330 TV lines. And the high definition TV for the 460 line.
Dr size of the NTSC standard monitor with 525 scan lines.
Medium clarity of the EIA are 700 black-and-white TV monitor the horizon.
The EIA high-resolution black-and-white monitor more than 900 TV lines. Medium resolution color monitor with 300 TV lines.
High-definition color monitor with 450 TV lines.
X Signal System (TV SYSTEM)
1. CCIR / EIA standard black and white
(1) CCIR is the European standard 625 line video signal
(2) EIA is the American standard black-and-white camera system
2. PAL / NTSC color standard
(1) PAL standard in Europe, Australia, the Middle East and parts of Africa use. PAL standard is the level of 625 scanning lines per second 25 segments.
(2) NTSC standard used in the Americas and other places. NTSC standard is the level of 525 scanning lines, 30 frames per second.
Chip CCD / CMOS
CCD is the charge-coupled device, is the image sensor chips, 1 / 2 ", 1 / 3", 1 / 4 "CCD on the tens of thousands of pixels. Pixels will be a light signal into the role.
Now 1 / 3 "CCD wide application, its size is 5.5 (D) * 4.4 (H) * 3.3 (V) mm.
1 / 4 "CCD cameras are mainly used for color, its size is 4.0 (D) * 3.2 (H) * 2.4 (V) mm.
CMOS image sensor chip is also, but show the images to see, CMOS worse than the CCD.
Signal to noise ratio (S / N ratio signal / noise ratio)
SNR measure the noise interference. SNR higher the better, and less clutter that high, high-quality video
Z automatic gain control (AGC)
When the strong light, AGC automatically reduces, the weakened signal source. When the light weak, AGC automatically increased, sources on the increase.
1 Vp-p peak
1VP-P is the complete video signal output. Because many devices need to complete the appropriate signals to operate, so the value of the CCTV system is very useful
Backlight compensation is based on specific regions of the meter to adjust electronic shutter (or automatic diaphragm), makes metering region exposure value normal.
D electronic shutter (Electronic Shutter)
Electronic shutter is a single signal processing. CCD camera is a major part of one.
In low light situations, CCD electronic shutter per second to 1 / 60 the speed of collecting information.
In the glare circumstances, CCD electronic shutter per second to 1 / 000 the speed of collecting information.
G Gamma coefficient (Gamma value)
Gamma factor is usually 0.45. Gamma factor changes, the images are compared with the changes.
J AC adapter (AC Adapter)
The AC adapter into AC power (the United States is 117 volts AC / 60 Hz), the output of 12 volts or 24 volts DC exchange.
12VDC
Most small black-and-white camera and 1 / 3 of the professional black and white video cameras in the 12-volt DC 100 -200 mA work. Color camera in the 12-volt DC 150 -300 mA work.
24VAC
About 2 / 3 of professional video cameras in 24 volts, or 20 volts -40 V exchange under the exchange of .24 V to transfer 450 feet long. Outdoor installation of video cameras in or near the camera no power, 24 volts AC adapter Is the first choice.
Focal length of the lens F, the focal length than a few f
F (focal length) that focal length of the lens. Focal length of the lens of the Algorithm: Kongju = (of distance / width of) * 4.5mm
For example: If you want to use 1 / 3 "CCD camera to see objects 10 feet, 5.5 feet wide, you need 8.8 mm focal length lens.
f (f-number) that the focal length than a few, such as f/1.2, f/2.0. focal length ratio = focal length / lens diameter. f number of smaller, the cameras and better lighting, display the image the better.
Q resolution (resolution)
TV with the clarity of images or as few lines to express.
Medium clarity of the EIA standard black-and-white camera for the 510 (H) * 492 (V) pixels, the equivalent of 380 TV lines.
And high-definition for 768 (H) * 492 (V) pixels, the equivalent of 570 TV lines.
Medium resolution color camera for the 330 TV lines. And the high definition TV for the 460 line.
Dr size of the NTSC standard monitor with 525 scan lines.
Medium clarity of the EIA are 700 black-and-white TV monitor the horizon.
The EIA high-resolution black-and-white monitor more than 900 TV lines. Medium resolution color monitor with 300 TV lines.
High-definition color monitor with 450 TV lines.
X Signal System (TV SYSTEM)
1. CCIR / EIA standard black and white
(1) CCIR is the European standard 625 line video signal
(2) EIA is the American standard black-and-white camera system
2. PAL / NTSC color standard
(1) PAL standard in Europe, Australia, the Middle East and parts of Africa use. PAL standard is the level of 625 scanning lines per second 25 segments.
(2) NTSC standard used in the Americas and other places. NTSC standard is the level of 525 scanning lines, 30 frames per second.
Chip CCD / CMOS
CCD is the charge-coupled device, is the image sensor chips, 1 / 2 ", 1 / 3", 1 / 4 "CCD on the tens of thousands of pixels. Pixels will be a light signal into the role.
Now 1 / 3 "CCD wide application, its size is 5.5 (D) * 4.4 (H) * 3.3 (V) mm.
1 / 4 "CCD cameras are mainly used for color, its size is 4.0 (D) * 3.2 (H) * 2.4 (V) mm.
CMOS image sensor chip is also, but show the images to see, CMOS worse than the CCD.
Signal to noise ratio (S / N ratio signal / noise ratio)
SNR measure the noise interference. SNR higher the better, and less clutter that high, high-quality video
Z automatic gain control (AGC)
When the strong light, AGC automatically reduces, the weakened signal source. When the light weak, AGC automatically increased, sources on the increase.
1 Vp-p peak
1VP-P is the complete video signal output. Because many devices need to complete the appropriate signals to operate, so the value of the CCTV system is very useful