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Advanced Security Surveillance
Remote Monitoring and Digital Transmission
Network Broadcasting



Advanced Security Surveillance
Since the introduction of DVR surveillance recorder in the early 2000s, applications of DVR system had increased with each passing year. The technology continued to develop, distribute and improve. Nowadays, enterprises, casinos, large retail shops, freight centers, franchises and most government buildings worldwide use DVR surveillance systems to deter crime and aid in criminal investigation.

The technology is developed on computer system, namely Digital Video Recorder DVR, all the captured images, video and audio are stored in computer hardisk, we call it - "Storage Buffer". This advantage provide much more storage space than VHS so that one system built-in "Storage Buffer" provides adequate storage capacity up to one month. As all the records are stored at "Storage Buffer" temporarily, Day 1 records will be erased automatically for future replacements - Day 31. At the same time, user can use the CD-Recorder in VisionNet Network DVR system to burn important data/record to CDR or CDRW for permanent storage during the month. And as each day record will stay in the DVR system up to one month, that's why we call it "Buffer". System user don't need to worry about changing or forgetting to change tapes in time-lapse recorders. Any old unwanted images can be erased automatically. Using Compact disc technology, records preservation and duplication become more easier and cheaper, and yet quality is superior than tapes.

1. Record 24-hour a day, complete coverage of every days, every weeks.
2. Storage Buffer provides up one month storage capacity.
3. Auto recycling and erasing records from the beginning if capacity is used up.
4. Remote clients can access into Network DVR for records retrieval, replaying,
    downloading or changing internal settings of the DVR.

Multiple maintenance-free security recording
VisionNet typical Network DVR system supports 3 different recording modes for user to choose:
24-hour a day Continuous Recording
As the storage capacity is much larger than before, system don't need user to change tapes frequently, don't need them to keep so many tapes for record storage. therefore, maintenance-free 24-hour a day recording is possible. System operator don't need to erase, check, store records because all of them are to be done automatically.
Time-Scheduled Recording
System user can define the recording time period on each day or each week. For instance, ABC Book store set the Network DVR to record only from morning 9:00 to night 10:00 from Monday to Friday, but on Saturday, they set it to record from morning 6:00 to night 11:00.
Motion Detection Recording
As VisonNet Video Camera supports Motion Detection. User can manipulate each camera for detection area and motion sensitivity. When Motion Detection is triggered, recording starts. This function is particularly useful during night time.

Remote Network Security
Network surveillance system is network based, this advanced functionality makes it highly suited to the mission critical applications involved in security surveillance. Armed with the above revolutionary technology, protection of people, property, assets from accident and crime have been greatly enhanced ever than before. Even more, with greatly compatibility with traditional CCTV Cameras, DVR is a very attractive option for those companies wanted to renew their currently using CCTV surveillance system.

False Alarm Prevention
False alarms present a big problem to security systems. Video Camera and Network DVR enable alarms to be checked from anywhere before action is taken. When motion is triggered or suspected event happened, a security guard who as been alerted to a break-in, can get a view of the room or building where the break-in has occurred by checking video images immediately in the Network DVR [Network DVR supports Records Playback without affecting normal recording] or other online computer. This way, he knows whether or not it is safe to enter, or any actions have to be taken, such as calling police.

Remote Monitoring and Digital Transmission
As VisionNet Network DVR systems are based on existing computer network, users can monitor anything remotely and with mobile at any place by computer notebook, or home desktops through Internet, WAN/LAN, or even telephone lines, so that authorized viewer can gather information at all key points in real-time. This makes it ideal for monitoring working equipment, scientific experiments, traffic, people, or any places both locally or at a distance. It helps to keep store owners better informed, prevent theft and makes store management easier and more efficient. Such a system is particularly appreciated as knowing that their property can be observed remotely increases peace of mind.

By the help of digital transmission, all the captured images, records stored in Network DVR distribute over the Internet, user can monitor and access from anywhere at any time. In some cases, particularly where network bandwidth is limited, it may be desirable to store video images locally onto a network DVR, and access them by downloading.

Network Broadcasting
All the video captured can also be used to broadcast over the Internet, providing viewer or audience with real-time information about sporting competitions, business conference, weather or traffic conditions, or used as a business tool to show promoting products or services to customers.

This function is particularly useful for business promoting event, or building company homepage to introduce products features to customers. The Network DVR automatically transmit every live images, with every hour, minute or even second to remote user through computer network or Internet.


For more information:
Video Camera Selection Guide - White Paper

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