|Difference Between DDNs & P2P|
|Router Support uPnP||Yes||No|
|Operation||Complicated||Simple(only one UID and password)|
|Penetrating||100% Bounced Back||95% Penetrating, 5% bounced back|
|Coded Audio & Video transmission||No||Yes(AES128)|
How P2P Transmission Technology Contribute to IP Camera
In recent years, the network video surveillance system has become increasingly popular. It enjoys high favor not only in the public security market, but also among more and more families and individuals. However, the monitoring needs of the latter are obviously different from the former. The monitoring needs of families and individuals are mainly reflected in the following aspects:
1. The demanding quantity of IP camera is small, usually for one family, one or several IP cameras are enough to use.
2. Neither special monitoring client nor long time monitoring is needed.
3. Usually, the monitoring client and the IP camera are on different networks. For example, the IP camera is at home, while user watches the video at work or through smart phones.
4. There is small probability that many people watch the same video at the same time.
5. Continuous and long video recording is not necessary. In most times, videos and snapshots are set to record by motion detection or others forms of alarm. At the same time users are reminded through alarm emails and messages.
From the above analyzing, we can see that there is a huge difference between the monitoring needs of families and the public security part, which decides that the IP cameras for civilian use must adopt different technique method. The reason is that:
- Since the IP camera and the monitoring client (PC/ smart phone) are on different networks, there is a firewall between them, so they cannot be accessed directly through IP address.
- There is a huge amount of IP cameras which belong to different users. If a central sever is applied to forward, it will need quite a number of forwarding severs on the Internet. The cost is very high.
- The IP camera must realize the function of plug and play to avoid the complicated settings and installation; otherwise the cost of after-sales service will be much too high.
Good news is that MOST IP CAMERAS has finally made a breakthrough on this problem, established a direct data transmission channel between client and IP camera and made the P2P transmission possible. LIKE OUR model “IP-129HW”
What software do I need for my IP Camera?
What Can My IP Camera DO Besides Showing me Images?
If you’re not a surveillance company glued to a wall of monitors, you probably don’t have time or patience to sit and watch your IP Camera 24×7. And if you watch even an hour a day, you’re only monitoring about 4% of the time.
ANALOG CAMERAS – These are your standard type of security camera. Analogue signals can also be converted into a digital signal to enable the recordings to be stored on a PC as digital recordings. After the signal is converted to digital, it can be recorded through the use of a digital video recorder (DVR). Such a device is similar in functionality to a PC with a capture card and appropriate video recording software. Unlike PCs, most DVRs designed for CCTV purposes are embedded devices that require less maintenance and simpler setup than a PC-based solution, for a medium to large number of analogue cameras.
IP CAMERAS – A growing branch in CCTV is Internet Protocol Cameras (IP Cameras). IP cameras allow homeowners and businesses to view their camera(s) through any internet connection available through a computer or a 3G phone.
IP cameras are Closed-circuit television (CCTV) cameras that use Internet Protocol to transmit image data and control signals over a Fast Ethernet link. As such, IP cameras are also commonly referred to as network cameras. IP cameras are primarily used for surveillance in the same manner as analog closed-circuit television. A number of IP cameras are normally deployed together with a digital video recorder (DVR) or a network video recorder (NVR) to form a video surveillance system.
The terms IP camera and network camera are most commonly used to refer to surveillance cameras with a Fast Ethernet interface. In this context, the term IP camera does not include GigE vision camera, which is a machine vision camera with a Gigabit Ethernet interface. Internet Protocol is a protocol used for communicating data across a packet-switched network using the Internet Protocol Suite, also referred to as TCP/IP. As with digital still cameras, the resolution of IP cameras has increased with time. Megapixel IP CCTV cameras are now available at resolutions of 1, 2, 3, 5 and even 11 megapixels. Today there are many manufacturers of IP cameras. IP surveillance equipment vendors include both specialized digital imaging equipment manufacturers and larger manufacturers that are active in consumer, broadcast, and security video.
MEGAPIXEL CAMERAS – In some situations where standard-definition video cameras (either analog or digital) are used, the quality is going to be poor because the maximum pixel resolution of the image chips in most of these devices is 320,000 pixels (analogue quality is measured in TV lines but the results are the same); they generally capture horizontal and vertical fields of lines and blend them together to make a single frame; the maximum frame rate is normally 30 frames per second. That said, multi-megapixel IP-CCTV cameras are becoming more popular. They can capture video images at resolutions of 1, 2, 3, 5 and even up to 11 Mpix. Unlike with standard definition (digital or analogue) cameras, details such as license plates are easily readable. At 11 Mpix, forensic quality images are made where each hand on a person can be distinguished. Because of the much higher resolutions available with these types of cameras, they can be set up to cover a wide area where normally several analogue cameras would have been needed.
Cameras and video recording systems offer a high level of security.
Having the ability to capture a crime in progress will greatly help the authorities convict the suspects. We have all seen video footage on the news of crimes captured on video.
Video surveillance is the best way to monitor activity on your premise, regardless if you are there or not.
Systems now offer more then simple recording. With the new technology, you can remotely assess your camera system on the internet. Some offer access with your 3G phone. Digital Video Recorders (DVR) can also alert you of events via email. Event emails can be directed your mobile phone. Video surveillance has come a long way from the days of the VCR tapes.
At G&A Lock and Security, we offer many solutions to be able to monitor your premise with video technology. We are a Bosch dealer and have had much success with their premium camera technology.
As there is an extremely wide range of video technology for your security needs, we will help find the solution that is best fit for you and your budget. Have one of our security specialists help you with a free consultation.
Securing your premise with a video surveillance system is a step to greater peace of mind.
Hi, all. We lanuch 1200TVL CMOS image sensor CCTV cameras, somebody may ask about the difference between CMOS image sensor and CCD one. The attached Link is for you to campare, click to download it.
CMOS sensor’s sensitivity are normally in the range of 6 to 15 lux. CMOS sensor have 10 times more fix pattern noise then CCD sensor. Fixed pattern noise is the kind of noise that stay on screen as if there is a patterned. As CMOS sensor will become useless under 10 lux. All camera for serious application are using CCD sensor. CMOS sensor are normally using on toy or very low end home security.
There 2 exception. CMOS sensor can be made very big and have same sensitivity as CCD sensor. CMOS sensor are very fast , it is 10 ~100 times faster then CCD sensor, so it is very good for special application such as high ens DSC camera ( Cannon D-30 ) or fast frame camera.
CMOS sensor can have all the logic and control circuit be build on the same silicon wafer dice so as to make the camera simple and easy to handle. Hence CMOS camera can be very small in size.
CMOS camera though consume same or more power then CCD sensor but CMOS sensor use less peripheral circuit such as CDS, TG and DSP circuit, so the total power consumption is 1/2 to 1/4 less then a CCD camera on same size.
There is only one exception that Mintron C series camera is using only 12V/65 mA power which is almost same as CMOS camera but having much better image quality. C series camera using 0.35um 3.3v DSP hence consume very small power ( 54C0,54C1,54C2,54C1,54C5,54C6) . All other CCD camera making by other company are consuming 12V/150~300mA, hence is 2 to 4 times more then CMOS camera that is on 5~12v and 35~70 mA
Ironically, although CCD stand for “Charge Couple Device” and CMOS stand for “Complementary Metal Oxide Silicon” but actually neither CCD nor CMOS have anything to do with image sensing. The actuarial sensor is a device called “Photo Diode” Both CCD sensor and CMOS sensor ( as so called ), are actually using same kind of sensor called Photo diode. Photo diode is a P N junction diode that will convert photon of the light that is bombing the junction into proportional amount of electron. The amount of electron are them calculated and read as voltage of signal. The more the light that entering the photo diode the more the electron generated and the higher the voltage out put from the sensor.
CCD stand for “Charge Couple Device” , CCD actually is only the technology to store the electron charge and the method to move these charge out of photo sensor in and organized way.
CMOS stand for “Complementary Metal Oxide Silicon” . CMOS actually is only a technology to make transistor on silicon wafer, and have no further meaning. Sensor being called CMOS sensor was a convenient way to discriminate it from CCD sensor and have nothing to do with the real ways that the sensor handling image.
CMOS sensor convert electron generated by photo diode into voltage signal immediately without complicate process. hence it is much faster. This good point makes CMOS sensor very useful for fast frame camera, the frame speed can be as high as 400 ~2000 frame/sec. This point makes it very good for high speed moving object survey. however due to lack of good fast speed DSP there are little high speed camera on the market and are normally very expensive $3000 ~ 300,000 per unit. Mintron makes 75 frame CCD camera which is 3 times faster then PAL TV standard on 25 frame/sec. and it is the physical limit for a CCD device.