WEB-chamber contrast with lockable lens consists in the specific construction, which is equipped with additional protection for light-sensitive sensor.
Ability to close the lens provides full owner of the security from threats emanating from Internet, unauthorized connection attempts to the owner of the data base, and directly to the device surveillance.
Content:
- How to deal with closing the lens webcam
- Device
- Web camera function with covered lens
- How to use
- Precautionary measures
- malfunctions
How to deal with closing the lens webcam
Recently publicized the fact that hackers break into someone else's WEB-cameras connected to the network, so the need of tighter security measures like cameras, installed on laptops, notebooks, televisions, and WEB-camera surveillance systems are located on the streets, which transmit data to the Internet.
In addition to protection from the designated threat, WEB-camera-closing lens saves the lens from damage and contamination.
The operating principle of WEB-lens camera with lockable, as in a digital camera or camera: the analog signals received by the photosensitive sensor to the analog-to-digital the transmitter and in the form of an electronic code is compressed directly into the streaming image format ready to be displayed on a computer monitor via USB-cable, or WEB-server.
WEB-cameras with covered lenses come in two types:
- With built-in WEB-server - own processing, storing information and produces an image on a monitor or directly to the Internet;
- Without WEB-server - only works when connected to a computer.
A number of advantages of network WEB-cameras of the camera, working on the basis of the PC:
- You can set the camera far away from the PC, PC camera is installed within three meters from the computer.
- It requires no additional hardware and software.
- Easy to install: you only need to set the IP address and can be used.
- WEB-control the camera can be by any digital device that supports Internet access through the WEB-browser.
- Higher quality images, the possibility of using video compression MJPEG format.
Price WEB-cameras with covered lenses varies in a large range, this is due primarily to the different destination WEB-cameras.
Device
Microprocessors WEB-cameras, responsible for video compression, are different, the most common - JPEG, it is also the cheapest. Alternative option - MPEG4, and the most expensive and the most outstanding image quality - MPEG2. New in production, but is gaining popularity WaveLet microprocessor.
USB-bus has a low throughput of 12 Mbit / s, and connected to the USB port on WEB-camera uses no more than 8 Mbit / s. Without hardware compression of data transmitted from the WEB-camera to your computer, it would be impossible to get a good image.
For compression of electronic data the USB-controller chambers through him might pass video stream at a rate of 10-15 frames per second at a resolution of 640 × 480 - this is a very good index.
To be clear, without this device, the video resolution of 640 × 480 can be transmitted to the computer only at a rate of 2-2.5 fps.
Web camera function with covered lens
Focusing
Many WEB-cameras with automatic or manual focus. It should be borne in mind that the cheapest models often autofocus does not work properly, therefore, saving money, choose the best WEB-camera with manual focus to get a clear picture when use.
Frames per second
Frames per second is responsible for the quality of the picture. The higher it is, the smoother image. This parameter is specified in the characteristics of each model. The maximum frequency for the WEB-cameras - 30 frames per second.
Built-in microphone
Current models WEB-cameras are usually equipped with a recording device - microphone. Depending from expensive device varies and the quality of the recorded sound.
Cheap microphone models good enough for negotiations on Skype with friends, but is not suitable for a serious conference with colleagues, execution on WEB-camera song repertoires, or recording of nature sounds, voices of people at a great distance, if the WEB-camera is mounted on street.
Bluetooth
WEB-cameras equipped with Bluetooth, transmitting data at short distances using radio waves. Technology such data is no longer a novelty, it was originally created for radio, but now it is possible to create local networks based on it.
Incompatibility issues connected to network devices equipped with Bluetooth, not among different brands.
Autoguider and motion detection
To create a reliable safety net is necessary not only to control the WEB-camera remotely, but also the turning ability of the device. Rotary WEB-cameras cover a larger radius of the review, thereby reducing the need for additional devices.
Control the camera by turning the lens and its closing is carried out from the WEB-interface and additional difficulties with the operation of the device owner, this useful additional function is not It causes.
Rotary WEB-cameras with covered lenses are suitable for private use. Availability of software motion detection module in homing devices provide chambers to the moving object, and focus on it.
security cameras are configured so that when it detects the moving object are fed to the address signal FTP or SMTP.
Photo / video shooting
Quality photos and video depends on the resolution of the matrix device and the amount of storage memory. The memory of 10 MB allows you to create pictures of normal quality, and store them in memory WEB-cameras.
Video shooting is only possible when a camera is connected to a computer to record video with a voice - need a quality microphone that is not in cheap models, WEB-cameras.
Security
Password protection is necessary to limit the rights of access to WEB-camera control interface. Current models contain multi-layered protection for added security passwords. By default, that is to say, without setting a password, access to the device is possible from a computer via the WEB-browser.
Cameras with covered lenses are designed to create security. If cunning Internet attackers hacking skill level which is not in place, and will be able to crack the password, it will not give them anything, because WEB-camera lens is closed upon completion of the work device.
Particular attention should be when choosing a WEB-cameras with robust, if you plan to use it for your security systems. Some time ago, Google is reliable, it has been vulnerable to hacker attacks; program hacks into Google Desktop Search, and unsuspecting owners WEB-cameras became Internet stars.
To reduce the likelihood that you will become a victim of fraud, you should use reliable method of technical protection of the tracking device.
After the scandal, burglary WEB-cameras, lenses owners close their devices manually, using adhesive tape, etc. With the advent of WEB-cameras with covered lenses need this disappeared.
How to use
WEB-cameras with covered lenses are used to create a video surveillance network. This is due to the fact that the management of one or more cameras - does not require the recruitment of additional trained staff.
A model of protection from unauthorized access to the facility are a camera with automatic motion detection. But no matter how good the defenders as these devices, they need to be protected.
To hackers via the internet is not connected to the WEB-chamber, in the WEB-interface device is installed password security, and a restriction on the ability to connect to the WEB-server, which is transmitted information. Another way to protect the camera lens is closing function.
This is done either manually via WEB-interface, or by setting the parameters of the automatic mode: Set working hours WEB-cameras, and the rest of the lens will be closed and any weather or other conditions are not withdraw the device out of service.
Private use WEB-cameras involves the creation of videoconferencing - is communication via the Internet in real time.
To protect transmitted data, you can limit the number of users who have access to them.
When the videoconference is over, the usual WEB-camera enters standby mode, and it can connect hackers, the camera lens with the closing, even if it happens, will not give thieves no information about owner. Therefore, this model is so popular with owners WEB-cameras around the world.
Precautionary measures
You need to thoroughly check the reliability of mounting WEB-cameras, so that no external conditions did not affect its fixation. Possible causes of damage: an awkward movement of the computer - WEB-camera falls to the floor and breaks, or - strong wind, mounting security cameras could not stand, and the outcome is clear.
You must use only licensed software.
malfunctions
- The camera does not turn on - to check whether the camera is connected to the computers. If everything is connected correctly, you have to contact the service center.
- No image of WEB-cameras - see if operation is included in the WEB-interface device.
- No sound - check the audio settings and audio parameters OS computer devices WEB-interface, if the cause is not identified and the sound problems are not related with hardware and violation of PC work, try reinstalling the device driver, and if the problem is not solved - contact the service center.
- It does not work WEB-interface - check the subnet settings, enter the IP address, port devices WEB-pages.
- Archive video is not sent to the FTP - check the DNS settings and a gateway IP cameras, using WEB-interface device.