IP cameras generally consist by the lens, image sensor, sound sensor, A / D converter, image & sound controller, web server, an external alarm, control interface, etc components.
1, the lens
As the front components of network camera,lens has fixed iris aperture, auto iris, auto zoom, the camera automatically change the wireless rotation times of the species, it is the same to analog camera.
2, image sensor, sound sensor
IP Camera image sensor has two modes, CMOS and CCD.CMOS is complementary metal oxide semiconductor, CMOS silicon and germanium are mainly used by these two elements made of semiconductor, through the CMOS on the negatively charged and positively charged transistors to the basic functions. These two complementary effects of the current generated by processing chips can be recorded and interpreted as images. The main advantages of CMOS than the CCD is saving the power. Unlike CCD, CMOS.But CMOS main weak point is when dealing with rapidly changing images, as the current transformation is too frequent, so make the CMOS becoming overheating. Dark current suppression is a real problem, if the inhibition is not good, it is very vulnerable to produce noise.
CCD image sensor from the silicon substrate was in the two-dimensional arrangement of the photodiode and the transmission circuit. Photodiode the light into electric charges, then transmitted by the conversion circuit and output.
Typically, transmission equipment,if need excellent image quality, CCD image sensors are used, while the focus on power consumption and cost of products, select the CMOS image sensor. But new technology is to overcome the inherent weaknesses of each type of device body, while retaining for some of the features a particular purpose. This part of the same with analog cameras. Sound sensors that pick up sound, or call the microphone, the same principles of traditional microphone.
More technic information, please send email to sale@china-ip-camera.com (Judie)
