Q:What is the meaning of the camera function heartbeat?

In the previous case, the implementation steps are as follows: 1, in a unified authentication system to open a "heartbeat" thread, the timing of the implementation of a visit A system operation, access to the A system S interface; 2, A system to achieve an interface S, Function for each access to an access request, then record a record of access, for example: 2009-3-18 fw 3, System A also need to also open a "heartbeat" thread, not separated by a certain time, access to the interface S is done Visit the record to see if the last record of the old record logo, if not, then prove that the single point of the system has the latest "heartbeat" came, its function is no fault.

Q:Night to monitor the infrared light is not bright because it is not open monitoring?

2: the camera where the environment is too bright, surrounded by incandescent or other light source, the camera will not enter the night mode, it will not open the infrared light

Q: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

And DVR difference is still very large. Which company model does the video encoder belong to. Generally without storage function, without hard disk. Even if there is a belt, generally only with a hard drive. The recording time is short. Unlike the hard disk video recorder to bring 8 or more than 8 hard drives for storage. And DVR is also divided DVR and NVR. Like the general use of the encoder, is the NVR (network hard disk video) transmission line is through the network cable, rather than dvr is bnc line.

Q:Wireless remote monitoring camera farthest to monitor how far

As long as there is a mobile Internet, where you can see, there is no distance limit. The

Q:What kind of surveillance camera is good for the hotel?

Such as the lobby: the general use of integrated zoom camera, the scene can be a point to enlarge the details.

Q:How does the surveillance camera solve the backlight problem?

Second, always use the corresponding function of the camera, improve the backlit appearance. There are two kinds of cameras inside the security camera can be better to deal with the problem of camera backlight, one is a backlight compensation function of the camera, one is wide dynamic camera. Backlight compensation, also known as backlight compensation, is the screen dividends of several different areas, each area from the exposure. In some applications, the field of view can contain a very bright area, and the subject is included in the bright field surrounded by a picture of a bleak, no level. At this point because the AGC detects the signal level is not low, so the amplifier gain is very low, can not improve the brightness of the main screen, when the introduction of backlight compensation, the camera only the entire field of view of a sub-region, Area of the uniform signal level to determine the AGC circuit operating point.

Q:960P HD network camera stored one day more G?

41G, vision of the world network is very good, I used

Q:How to choose to monitor the camera and video capture card?

Fifth: on-site monitoring and network monitoring When you determine the monitoring system installation, to consider whether the need for network functions, that is to say if you need to monitor the site at any time to monitor and control, you need to select a network-enabled monitoring host The To avoid the installation is complete but no network transmission function.

Q:What is the difference between a wireless surveillance camera and a cable surveillance camera?

Monitoring camera is a semiconductor imaging device, which has a high sensitivity, anti-glare, small distortion, small size, long life, anti-vibration and so on. Surveillance camera security system, the image generation is mainly from the CCD camera

Q:Monitor the hard disk video recorder how to pick up the computer

VCR behind the network cable jack is connected to the Internet, the video recorder network after an ip address (such as 192.168.0.2) computer also have networking, the computer network to open a web page, the address bar into the video camera ip192.168.0. 2, will be able to visit