The difference between old and new cameras

webcam abbreviation webcam , English is all called web CAMERA ( if "Microsoft IE or netscape),

The Network Camera is a new generation of traditional video camera and network video technology, in addition to the general traditional camera all the image capture function, the machine also built-in digital compression controller and based on WEB the operating system, so that video data is compressed and encrypted through the LAN, Internet or wireless network to end users. And the remote user can use the standard Web browser on the PC, according to the IP address of the network camera, access to the Network Camera, real-time monitoring of the target scene, and the image data can be edited and stored in real time, You can also control the camera's gimbal and lens for all-round monitoring.

Parameter Identification

Webcam is a kind of monitor, but the network camera is on the traditional monitor adds the function which unifies with the Internet.

For many consumers, the design style of the webcam, the type of computer, and the overall color coordination with the desktop space can be a major guide to the final choice.

Generally well-known manufacturers will be specially designed for the user notebook or desktop Network Camera to meet the needs of different computer users of the overall desktop collocation, some cameras are equipped with a notebook adjustable positioning clip or desktop adjustable multi-function base

For the camera itself, the lens is the determining factor for image clarity. The lens material mainly has the glass lens and the plastic lens two kinds, because the glass lens light transmittance and the imaging effect occupies the big superiority, has been applied in the relatively high-end product. In addition, to determine the quality of the glass lens is the most important indicator is the amount of light, it is to determine the camera sensor image acquisition details and clarity of the most critical factor, pay attention to the network camera of friends in the selection of the lens of the general principle is to choose the famous manufacturer of the lens produced.

View pixels

A high-resolution webcam, usually with a strong

The ability to parse images, so the network camera function is reflected in the network Camera pixel high and low. In general, the level of the pixel depends on the resolution size on the webcam sensor and directly determines the size of the image captured by the webcam or displayed on the computer monitor. And as to say whether the image is clear, light to see pixels but not, it also with the lens material, software processing and other aspects are closely related.

In addition , in the market we common webcam pixels are generally 30 million pixels, and some businesses tend to say can achieve software value-added 130 million pixels, this time, consumers must pay attention to the difference between the real 130 million pixels and software add value 130 million pixels, because the software adds value 130 million pixels just pull the picture up, and it doesn't really improve the quality of the image, even the possibility of serious distortion.

In general, a high-performance webcam usually provides the hardware system while providing some software value-added technology to bring more services to consumers. The color of the camera and the ability to adjust the light source are also important for the efficient operation of the camera. In particular, the backlight compensation and white balance adjustment function, because these functions are well controlled, can let the video screen play harmoniously and naturally, show you the most beautiful, the most natural side.

Conversion Mode

part of the camera used in the light The night of the line is still able to get a clear image of the rightlight2 technology to intelligently optimize video settings. Some users buy the webcam back only to find that the image is very vague, and the business there is a good time to try, which is generally not adjusted to focus on the cause. Like shoot camera, the webcam uses a super-focal length, while the depth of field is large but the macro should be manually focusing. Therefore, it is sometimes necessary to manually adjust the focal length of the camera to get the clearest image. But some of the quality of the webcam's focal length is fixed, that is, the webcam can only take a fixed distance to the clear image, once too close or too far, Can not get a clear picture. and the quality of the camera lens can be manually adjust the focal length, even like Logitech's many network cameras with the auto-focus function, no matter where you put the camera in that position, you can get a clear image by autofocus.

Some high-performance webcams In addition to providing consumers with superior imaging quality, voice session optimization techniques are also available. Solves the technical problems that occur near most of the current webcam microphones -- Echo, which reduces background noise and improves overall video session performance, consumers will get a better real-time video Call experience -- This is a more natural way to communicate.

The fashion trend of video is getting more and more from " Survival of " to " Entertainment of " direction, many webcams offer downloadable software directly to consumers, allowing them to choose the way they like. The supermarket does not need to use the network camera, makes the common camera and the 8800 Card also can realize the remote monitoring control the goal, of course, if funds allow, the network camera also has its advantage.

SimulationSurveillance Camerais a combination of traditional wirelessCameraand network technology generated by the next generation of cameras, it can transfer the image through the network to the other side of the Earth, and the remote browser does not need any professional software, as long as the standard Web browsers (such asthe Microsoft IEorNetscape) to monitor its imagery. The network Camera has a built-in embedded chip with embedded real-time operating system. The video signal transmitted by the camera is digitized and compressed by an efficient compression chip, which is transmitted over the network bus toWebserver. Users on the network can view it directly from the browserWebthe camera image on the server, authorized users can also control the camera PTZ lens action or the system configuration.

Network Camera Composition principle: 

The network Camera is generally composed of lens, image sensor, sound sensor,A /dConverter, image, sound, controller network server, external alarm, control interface and other components.

1, Lens

2, image sensors, sound sensors

3,A /dConverters

4, images, soundEncoder Device

5, Controller

6, network server

7, external alarm, control interface

8, coding standards for images

analog surveillance camera refers to the recording or transmission of analog electrical signals (analog tapes), digital cameras are recorded digital signal (digital tape), is now directly recorded in the form of files. The network camera is actually in the camera output part of the network module, the captured data stream through the cable transmission to the server and then file records. Ordinary surveillance camera and Network Camera format is not the same, analog cameras come out of analog signals, network cameras out of the digital signal, network cameras than analog camera pixels are generally much higher! !    

What is the rate of the code?

Resolution!
the higher the general resolution, the greater the code rate. Hoi Hong DVRin whichWD1is generally1792Kbps;130Wthe camera is generally2M, i.e.2048Kbps;200Wthe camera is generally4M, i.e.4096Kbps;300Wthe camera is generally6M, i.e.6144Kbps. Know the bitrate, the time, the number of cameras can begin to calculate!
Formula: bit rate (unitKbps)x3600x24÷8÷1024÷1024=Recording Capacity (1days) (UnitsG)
Once you get the capacity of the day, you can calculate 1months or other times of capacity.

The difference between old and new cameras

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