What is a True Wide Dynamic Camera?

Monday, May 10, 2004
Jay Ruoo
Technical Director.

One of the most fundamental "law" of photography is that you never take a picture with bright light source, such as the sun in the background. Most of us know what happens when we do this: A black shadowy silhouette in front of a bright light, unable to distinguish any physical features. Same has been true in CCTV surveillance photography. Recently however a breakthrough in optical engineering called the Wide Dynamic Technology enables a camera to take picture for what used to be off limits for surveillance photography.

Here is how Wide Dynamic Works.

Essentially, a Wide Dynamic Camera is simultaneously taking pictures of two polar opposite environments and "combining" it with a specialized chipset---kind of like taking two separate cameras to photograph a environment separately then combining it in a image editing software in a computer. First is the CCD: Our true Wide Dynamic cameras are equipped with top of the line 1/3" Interline Double Speed SONY CCD. The Interline Double Speed SONY CCD is quite different from conventional SONY CCD's in that it is able to read both bright and dark areas separately. Once the two differeing environments are read by the CCD, this information is then transferred to the CX3151 Wide Dynamic Chipset where the 2 different images are combined in to a single scene. As an added value, our Wide Dynamic cameras can be enabled with Mechanism driven, True Day & Night feature.


Conventional CCTV Camera	True Wide Dynamic CCTV Camera

Featuring Components:
	1/3" Interline Double Speed SONY CCD AM80H-WD Series cameras are equipped with 1/3" Interline Sony Double Speed CCD that are highly sensitive. Since the Interline Sony Double Speed CCD reads both bright areas and dark areas at once separately, it's called double speed. Only high resolution is available at this moment.
	Wide Dynamic Range Chipset- CXD3151 After the Interline Sony Double CCD reads 2 different areas, bright and dark, our CXD3151 Wide Dynamic Processor "combines" the 2 different images in to 1 scene. Even though there is very bright light or even a imposing spotlight on objects, the picture image is always sharp without any blooming or smears as if you are watching this through your eyes. It is never disturbed from strong backlight and highlight.
	Mechanism Driven True Day Night Function - Optional AM80H-WD-TDN Models include a Mechanism Driven True Day Night Function that are optionally available. Since heat is always the damaging factor in most True Day & Night mechanisms, one of the distinguishing feature of our TDN mechanism is it can endure high temperature of up to 200¡É by using thermal resistent LCP material.

HIgh Resolution True Wide Dynamic Camera with Mechanism Driven True Day & Night Control

AM80H-WD-TDN
1/3" Interline Double Speed SONY CCD with True Wide Dynamic 480 TV Lines
with Mechanism Driven True Day & Night Capabilities at 0.02Lux Rating

Ambush's foremost priority is to satisfy our customer's demands as well as to improve from many weaknesses of current technologies. Many customers are exploring to improve their security solutions as well as to keep up with current technologies. With AM80H-WD-TDN, Ambush introduces a newly found technology titled Wide Dynamic. For most color cameras, even with the latest technology, it is impractical to use the camera while receiving strong light from the background. However, Ambush has finally solve this problem by combining two different types of technologies in 1; DOUBLE SPEED SONY CCD and WIDE DYNAMIC CHIP (CX3151). The Double Speed SONY CCD uses different type of mechanism from the regular type CCDs. The Double Speed Sony CCD can read both bright and dark areas individually, while regular CCDs could only detect one or the other. Afterwards WIDE DYNAMIC CHIP (CX3151) combines 2 different images in 1 scene. Furthermore, True Day Night Function enables the camera to perform in a real 24 hour monitoring with clear images for both day time and night time usage. Ambush is very proud to introduce the newly upgraded AM80H-WD-TDN, the best True Day and Night camera available today.

1/3" Interline Sony Double Speed CCD Imager
480 TV Lines (Day)/ 560 TV Lines (Night)
Wide Dynamic Range WIDE DYNAMIC CHIPSET (CXD3151)
Patented True Day Night Mechanism
Accepts C or CS mount lens.
Wide Voltage Range(8V-18V)
Low light, high sensitivity.
Compact and light-weight.Low power consumption.

AM80H-WD-TDN
1/3" Interline Double Speed SONY CCD with True Wide Dynamic 480 TV Lines
with Mechanism Driven True Day & Night Capabilities at 0.02Lux Rating
~~$499.00~~
$399.00

Horizontal resolution	480 TV lines [At COLOR] 560 TV lines [At B/W]
CCD Type	1/3" Interline Double Speed SONY CCD
Scanning System	525 lines interlaced (NTSC) 625 lines interlaced (PAL)
Synchronization	Internal
Output signal	Standard composite signal 1Vpp composite video into 75 Ohms
Light sensitivity -30 IRE [B/W]	0.02Lux (Scene) with F1.2 Lens
IRIS Control	DC Vari-focal + Electronic Shutter
Dynamic Range	64dB [About]
Signal to Noise Ratio	46 dB or more (AGC off)
Gamma	0.45
AGC	on (4-26dB Max)
Input voltage	DC 12V[DC 8.0V ~ 18.0V]
Min. Electric Iris	1/100,000 sec(s)
Max. Electric Iris	1/60 sec(s)
Lens Mount	C or CS
Iris Control	DC or Video
Backlight Compensation	Auto
White Balance	Auto
Gain Control	Auto
Operating Temperature	-10~50 ¡ÆC
Operating Humidity	30~90 %RH
Width	2.0"
Height	2.0"
Length	4.0"
Weight	14.1 Ounce (approx.)

DVRsurveillance.com Inc.,
3435 Wilshire Bl. 27th Floor,
Los Angeles, CA 90010

Tel: 949-464-7419
Fax. 213-380-0339