The FAQ For Security Camera

Q1:How to recognize 3142?

 A : 1、Below is real 3142：
 

 2、Below is fake 3142：
 

Q2: How to identify the authenticity of the camera?
 A :

  
Start with CCD looks: If you open the bolt dust cover, see CCD surface, See?
 1.Up and down two rows of contacts, the middle of a big front teeth missing, this is SONY CCD characteristics (left), Side of the missing front teeth while not missing front teeth,What does CCD Sony 1 / 4 "CCD (no map)
 2.No missing front teeth, SHARP CCD (left graph)
 3.No missing front teeth, like, but thicker lines, which is Panasonic CCD (third from left diagram)

4.A1 CCD (fourth from left diagram)
 DSP:
 SONY has SS-1 (2163), SS-11 (3141 / 2), SS-11X (4103), SS-HQ1, SS-2,
 Sharp has D4 (38603), D5 out soon
 Matsushita to D5 based
 There Hitachi (a Taiwanese manufacturers use),
 South Korea NEXTCHIP,
 Taiwan's A-NOVA
 Simple plan
 3142 +405 Pu solution (the so-called 420 lines)
 2163 +405 Pu solution (some manufacturers sell as high resolution 480 line standard, industry standard solutions of known high false 460 lines)
 2163 +409 high resolution (the so-called 480 lines)
 2163 +255 (lower photo)
 3172 +409 3172 +255 4103 +405 4103 +409 and so on.

 Q3: What is Closed Circuit Television (CCTV)?
 A:CCTV or Closed Circuit Television refers to a visible or covert video system intended for only a limited number of viewers. In Closed Circuit TV (CCTV), the picture is viewed or recorded, but not broadcast. It was initially developed as a means of security for banks and casinos; however, today it has been developed to the point where it is simple and inexpensive enough to be used with Home Security Systems, and for everyday surveillance.
More specifically, CCTV is a television transmission system in which live or prerecorded signals are sent over a closed loop to a finite and predetermined group of receivers, usually as scrambled radio waves that are unscrambled at the point of reception. CCTV takes numerous forms and performs a wide range of functions ranging from image enhancement for the partially sighted to the transmission of pay-per-view broadcasts. Although cable television is technically a form of Closed Circuit TV, the term is generally used to describe systems with more specialized applications than a standard broadcast or cable television. Such specialized systems are not subject to regulation by the Federal Communications Commission (FCC); however, Security Cameras using scrambled radio waves are in fact subject to common carrier tariffs and FCC conditions of service.

Q4: What is "Lux" for cameras?
 A:LUX is defined as "Relative amount of light that will produce a viewable image." Cameras actually work in the opposite of the ratings of LUX. LUX is actually amount of light created where cameras are capturing light.

 Below is a general reference of amount of light created in LUX ratings.

A few lux ratings for reference;
 The sun - 100,000,
 Sun with light cloud - 70,000,
 Sun with heavy cloud - 20,000,
 Home/office lighting - 100-1000,
 Sunrise/sunset - 500,
 Street Lighting - 1-10,
 60 Wt. Bulb 10 ft. away - 10
 Twilight - 4,
 Full moon - 0.2,
 Quarter moon - 0.02,
 Overcast moon - 0.007,
 Clear night sky - 0.001,
 Average starlight - 0.0007,
 Overcast night sky - 0.00005

Q5: What is BLC "Back Light Compensation"?
 A :Many cameras included a BLC circuit. This circuit is used to help correct an image with more light behind the subject being viewed. Without backlight compensation, the subject appears dark with little detail. Using backlight compensation will reduce the brightness of the light to allow the subject to appear brighter and bring out the details.

Q6: What is Automatica Gain Control?
 A : Most cameras come with an AGC circuit. This circuit examines brightness level of the video signal to keep it at a consistent level. For example, if the video signal is dark, it will attempt to increase the gain to bring the brightness up to a normal level.