A Video Door Phone is not only the Accessory of Your Door

As a vital part of any home, doors have undergone a metamorphosis of sorts and are nothing
like what they used to be.

A vast market exists for door handles, knobs, locks, door closure in materials ranging from
steel, acrylic, wooden, crystal etc., which are available in various shapes and sizes.
Current fittings consume less space and time for installation. You can accessorise doors in
myriad ways so as to make them storage spaces.

Doors can be made to serve many purposes based on how they are accessorised. Zicom
Electronic Security Systems’ 7” Screen video door bell combines many functions such as
verifying your visitors, digital photo frame paired with SD card and audio/video player that
supports MP3. With the digital photo frame, you can even watch movies. It is also equipped
with a remote control.

The outdoor unit has a loudspeaker that makes the users’ voice audible to the visitor and a
camera that captures image of the visitor. The infrared LED ensures clear vision during at
night, the microphone captures the voice of the visitor and the call button is used to
generate a bell sound inside the house and activate the camera.

When technology meets security, it creates an impeccable security system. Fingerprint Locks
opens by designated fingerprint(s), making the key unique and one that cannot be duplicated.
Likewise, Howard Storage World has a massive collection of door accessories which can turn
the doors into innovative storage spaces.

These are highly modern products that can save the storage space in today’s small and
compact flats. These products can be easily adjusted at the doors and include over the door
hooks, a cap rack that can hold up to 20 caps, an ironing hanger hook designed to keep the
ironed clothes, a hanging shoe storage that has optional drawers which can store around 20
pairs of shoes at a time and sweater organisers.

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Development of Digital Video Doorbell

Security through the development of the 2008 Beijing case found that all TCP / IP technology, semi-digital video door bell products are quite common. Many manufacturers of analog and digital combination of eye-catching semi-digital products, and some manufacturers have introduced a fully digital intercom products have become the development of the 2008 Beijing Security intercom series of outstanding highlight shows, digital products has become on the intercom stresses the importance of indicators of technology development manufacturers.

If the number of homes Matsumoto Smart 880 series is the all IP network transmission of digital building intercom system, door from the room extension to the machine, to the management center (PC) are using TCP / IP data transmission, IP-based networks due to network architecture, network communication with the fastest speed and call features a full range of all households, also have a very powerful system extensions.

This stage, despite the traditional analog intercom systems still account for a large market share, but its shortcomings are increasingly prominent.For example in the wiring structure, the model would signal transmission network is divided into main bus (network) and the branch bus (unit). Device from the management machine, cell door machine, door machine unit, the second confirmed tenants door machine, indoor extension form from the top-down hierarchical bus architecture. Management plane to the cell door machine, door machine is a residential unit trunk bus network, and the second unit to confirm residents door to door machine machine, indoor extension is the second branch of the bus. Both the main branch of the bus or bus, voice, video and control signal lines are required for the laying of a separate dedicated cable, the cable type and quantity will be greater, which gave the system cost and engineering trouble.

Now, half-way digital network approach has been more common, the TCP / IP networking to the cell door machine, door machine unit to the door machine and indoor household use a conventional bus mode. It is understood, the reason is that TCP / IP networking in the wiring, networking, signal transmission, system scalability, feature extensibility, system maintainability, network interference, multi-channel communication capability, etc., is very evident in advantage.

Then compare digital TCP / IP doorbell intercom system, wiring is much smaller and simpler, various signals (audio and video, control) all integrated together in just a digital cable transmission, simplifying the wiring, the installation of the system equipment , commissioning, maintenance is simple.TCP / IP network can not only achieve the sound, image, control signal transmission, but also realized the block of flats, residential intercom equipment all the network. Technology for system and network-based digital system can be used integrated audio and video codec module, ARM platform, its powerful data processing capabilities and hundreds of megabytes of bandwidth makes the original more than a single type of signal into digital signal so that signal transmission change too "simple", the signal quality significantly improved greatly improve anti-interference ability, and can achieve with the cell perimeter alarms, access control, card, and community services system for seamless integration.

Bus system with the traditional analog intercom than IP numbers highlight the feel intercom has the following characteristics: transmission distance without any geographic restriction, extension very easy to upgrade; transmission of audio and video, control signal bus is much better than the traditional way ; allows home alarm, home appliance control, remote monitoring, community service and other functions integrated; installation convenience, reducing the project cycle, saving for the project.
More info about video door bell at: http://gloria006.livejournal.com/2983.html