Rediscover Megapixel IP Cameras

Rediscover Megapixel IP Cameras
Q: What digital camera is a network camera before you ?
A: Digital cameras , according to the difference in transmission mode , a USB camera ( that is, the field of IT computer camera ) and network cameras , and IP Camera are usually divided into two types , one is the front-end based on analog CCTV cameras , followed by video processing and network transmission module , this camera has many of the same drawbacks analog cameras , no more than the highest quality D1, the other is pure digital high-definition video camera , it does not repeat the digital to analog conversion , directly to digital video processing and network transmission out. The latter will replace the digital high-definition network cameras former traditional network cameras.
Q: Megapixel IP cameras occupy hard big?
A: Megapixel IP Camera, pixels high naturally occupied hard disk capacity is large, but because it is a digital signal camera , you can do better signal to noise ratio , the picture is clean, snowflake points less , thus saving a lot of disk space . With 720P HD , for example, takes an hour each way video 1G hard disk space can be controlled in less than analog monitor with D1 resolution video stream considerably .
Q: Megapixel IP cameras is not pixels the higher the better ?
A: Megapixel IP camera, if appropriate choice of photoreceptors and video compression processor , you can easily do 1,300,000 , 2,000,000 , and even 500 million pixels . However, not more pixels, the higher the value of the camera application . For security surveillance cameras , in addition to considering pixels, while also considering the illumination . And generally the higher the pixels , illumination worse , pixel and illumination is inversely proportional to the other pixels, the stream will be greater capacity and disk footprint . In many sellers live show, the camera more than 2,000,000 pixels in effect , most of the viewfinder bright outdoor light , indoor show rarely under low light surveillance video , which is actually a misleading buyers .
Q : Millions of how the quality of high-definition network camera ?
A: Currently Megapixel network camera , also belong to the emerging high-tech products , is still in the early stages of development , did not enter the price battle, because with a reasonable profit guarantee , while bigger companies are generally not on the quality of relaxed, natural we do not need such as analog cameras , because profit is very thin and cut corners to make things , whether it is chips, electronic components, or infrared lamps are used is a quality assurance brand goods , longer service life .
Q : Millions of high-definition era , CMOS will largely replaced the CCD?
A: In the era of analog monitor , CCD because of early development , while providing a complimentary full technical program , has been favored by many camera manufacturers . However, the development of CMOS chips late step , early technology behind the CCD, plus a full set of technology solutions mature much, so do not give good. Later , CMOS chip technology has been developing rapidly , low-light performance is also improved significantly, especially in the field of mobile phones and other consumer electronics , is already extensive use of CMOS sensor , a lot of high-end digital camera is a CMOS instead of CCD. In recent years, companies such as American APTINA increased emphasis on the field of security , cost-effective CMOS chips began to flow to the field of security , and thus be in the security field position CCD produces impact, especially into the era of digital high-definition , digital high-definition video camera gradually replacing analog cameras , CMOS has replaced the CCD into the mainstream trend.
Q : CCD HD network camera with millions of millions of high-definition CMOS compared to illumination will be better?
A: According to the photoreceptor semiconductor company's technical staff to say , the same sensitive area , the more pixels , each pixel of the photosensitive area is smaller, each pixel on the number of photons received less natural light photoreceptor sensitivity worse . Many people often mistakenly take hundreds of thousands of pixels , 1/ 3 ' inch CCD analog cameras to go with the 1/3' inch CMOS Megapixel IP Camera compare illumination effect, which draw the wrong conclusions , that better illumination CCD . In fact, APTINA Company 1/3 ' inch 1,300,000 pixel chips made ​​using low-light cameras and a Nissan 1/ 3' inch CCD chips made ​​of 1.3-megapixel digital high-definition network camera for low-light effect of contrast , in the same conditions , CMOS is not only inferior to CCD, but visually far beyond the CCD million cameras.
Q: What do one million high-definition monitor whether the time is ripe ?
A: Several years ago , security industry had already started to sing "Million HD" trend , but they are thunder, little rain , mainly due to the time the domestic Megapixel immature technology . Today , whether it is from a technical point of view or the market demand, to make one million high-definition monitor timing are ripe. On the technical side , that represents the number of domestic companies have tackled the camera from the front to the back-end storage , and network transmission and other aspects of the problem, to achieve a clear picture quality, low light , wide dynamic range and other functions, and the results are better than traditional analog cameras , with a very high price. Second, from the customer's point of view, analog monitor has been unable to meet the market definition , intelligence requirements, Megapixel surveillance has become the market mainstream appeal points . However, due to contractors and end- users Megapixel always lack a thorough understanding of , so many people are still on the sidelines. 2010 million high-definition , the security companies to seize the opportunity is bigger and stronger competition in the market the necessary conditions , if you wait a million industry completely universal definition , then the business may be out of the market and consumers , can also cause enormous waste of social resources .
From:http://www.vstarcam.com/channel/Rediscover-Megapixel-IP-Cameras-333.html