What is IP camera?

IP camera is a standalone system connecting directly to an Ethernet or Fast Ethernet network. Differed from the conventional PC camera, Network IP camera is an all-in-one system with built-in CPU and web-based solutions providing a low cost solution that can transmit high quality video images for monitoring. The IP cameras can be managed remotely, accessed and controlled from any PC/Notebook over the Intranet to IP camera.

What is maximum users per IP camera?

Maximum number of users that can log onto the IP camera at the same time is 10. Please keep in mind the overall performance of the transmission speed will slow down when many users are logged on.


IP camera use which algorithm to compress the digital image?

WH IP camera utilizes the latest M-JPEG and MPEG4 technology providing high quality images for users. You can record streaming video that utilizes high quality MPEG-4 images to your hard drive, enable motion detection and setup automated email alerts for security.


How IP cameras over a network for remote viewing?

For most CCTV camera surveillance systems, it is relatively easy to expand the number of cameras and monitors within a building, but viewing those images from another location is another story; however, if a building is equipped with a network, the necessary infrastructure is already in place to add WH IP camera, and dynamically expand when and where video can be viewed.

Transferring and Storing Images

Several transmission types are available for connecting to the Internet. These include standard and ISDN Modems, DSL Modems, Cable TV Modems, T1 Connections, and 10, 100, and 1000 M bit Ethernet Connections. In addition, Cellular Phone Modems and various Wireless Network options are also available. Digital images can be stored on hard disks. Typically several million images can be stored on one hard disk. When the hard disk is full, the computer can be programmed to automatically erase old images and make space for new images. There are a large number of professional security systems managing the complete security application available on the market today.

IP Camera Compression Techniques and Image Resolution

The IP camera of the digital Image resolution is measured in pixels. The more detailed an image is, the more data, and therefore the more pixels, it contains. Detailed images require more space on a hard disk and more bandwidth for transmission.

For storing and transmitting images over the Network, the data must be compressed or it will consume too much disk space or bandwidth. If bandwidth is limited, lowering the frame rate or accepting a lower image quality will radically reduce the amount of information being sent. A number of compression standards exist that deal with the tradeoff between frame rate and image quality in different ways. Of the more common standards, both JPEG and MPEG transmit high-quality video, while the H-standards, normally used in Video conferencing, do not generate clear images of fast-moving objects.


IP camera Light Requirements

The most common reason for poor image quality is insufficient light. With too low a light level the colors will be dull and the images blurry. The light level is measured in Lux. Strong sunlight is approximately 100,000 Lux, full day light is 10,000 Lux and candle light is 1 Lux. Usually at least 200 Lux is required to capture good quality images.

Bright areas should be avoided, as images might become over-exposed and objects appear too dark. This problem typically arises when trying to capture an object in back light. A WH IP camera adjusts the exposure to obtain good average light level for the image, but the contrast of colors between the object and the background influences the exposure. To avoid this problem, small dark object should be displayed towards a dark background to achieve correct contrast and color.

Does IP camera requested High-Speed Internet Connection?

Yes, a dial up connection does not provide a wide enough bandwidth for streaming video. The video will be transmitted as a static group of still images that will be of little use. When you use your WH IP camera with a High-Speed Internet Connection, you can easily view the action as through it were a movie.

What is the difference between an IP camera and a Web camera?

An WH IP camera is a networking device with a built in computer chip sometimes referred to as a web server. An WH IP camera has its own "intelligence," and does not need to be connected to a PC to establish a network connection, and can be viewed from virtually any Web Browser. A Web camera on the other hand, must be plugged directly into a computer (usually via a USB Port). Web cameras are only accessible by the host computer and cannot be shared across a Network.

Does my computer need to be on all the time if I use an IP cameras?

No, once the WH IP cameras is installed and configured, the cameras is independently accessible from any Web Browser without your home computer being on. the IP camera is an independent entity, with its own IP Address, just like your home computer.


Resource:

• IP camera Full Review
• IP camera Last News
• PTZ camera full review
• PTZ camera last News