Home Security Surveillance Camera System
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Monitor the camera 1/3 and 1/4 of the difference there is nothing different CCD what is it
- CCD, English full name: Charge-coupled Device, the Chinese full name: charge-coupled components. Can be called CCD image sensor, also known as image controller. A CCD is a semiconductor device that converts an optical image into a digital signal. The tiny photoreceptor implanted on the CCD is called the pixel (Pixel). The higher the number of pixels on a CCD, the higher the picture resolution it provides. The CCD acts like a film, but it converts an optical signal into a charge signal. CCD has a number of neatly arranged photodiode, can sense the light, and the optical signal into electrical signals, the external sampling amplifier and analog conversion circuit into digital image signal.s
There are cameras at the fork in the expressway
- The first speed camera is a shape like a rectangular box, play a decisive role is actually connected with the radar module. Radar detection vehicle over speed will be linked when the camera to take pictures of evidence. The speed radar uses the Doppler effect principle. When the vehicle approaches the radar antenna, the reflected signal frequency will be higher than the transmitter frequency. When the vehicle is away from the antenna, the reflected signal frequency will be lower than the transmitter rate. This can be calculated by the frequency of the value of the target and the relative speed of the radar.s
What is the difference between a network video encoder and a hard disk video recorder? And bolt machine cameras are the same as security monitoring? What kind of network video encoder used
- Network video coding is a professional network transmission device for compressing and processing audio and video data. Mainly to provide video compression or decompression function to complete the image data acquisition or recovery, the current more popular MPEG-4 or H.264-based image data compression through the Internet network to transmit data and audio data processing. And the same bolt, belong to security products. Suitable for viewing images monitored by the camera over the network.s
Monitor the camera gray screen
- 1, power reasons. The basic can rule out this reason, because it has been running for 2 months. If you do not worry about the power, you can do this: remove the camera, change the new power (or now use a normal) next to the host test. (Because the output line of the power cord is too long, there may be insufficient voltage.)s
What does the privacy of the surveillance camera cover?
- 1, bolt: cheap, but does not have the zoom and rotation function, can only complete a fixed angle of the surveillance, hidden poor;s
What is the meaning of monitoring the camera mm?
- The focal length is the measure of the aggregation or divergence of the light in the optical system, which refers to the distance from the light of the lens to the focal point of the light gathering. Is also the camera (class camera) system, from the lens center to the film or CCD and other imaging plane distance. Simply say that the focal length is the distance between the focus and the vertex of the mirror.s
Wireless remote monitoring camera farthest to monitor how far
- Wireless camera, generally refers to the access network part is wifi, not wired, so his distance is determined by the distance of the wireless router, spade router power how much it can extend the distance even greater, as the camera can see how much Range, decided by the camera lens, usually 10-20 meters.s
Can I monitor the camera directly on TV?
- Bought the camera, connected to the power, the line connected to the computer, with the AV head, the TV can be transferred to the video state can be, as to how much money, hundreds of dollars it, depending on what kind of you The cameras
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