Video Servers Bridge The Gap

Network IP solutions are touted as the answer for security problems, but analog cameras dominate most existing camera configurations. Video servers span the distance between analog and digital systems, upgrading existing systems and holding tantalizing potential for newer uses.

One benefit of digital systems is faster response time, with video servers bridging the gap between legacy analog systems and digital IP systems. The universal function of a video server is to transform analog signals into digital signalsimportant in places with existing analog frameworks. 

Video servers, sometimes known as video encoders, bridge the gap between analog CCTV surveillance systems and digital IP based systems. Video servers are a great budget conscious, transitional product for those who are looking to gain some of the features and benefits of network based solutions but, aren’t ready to make the full jump.

If you’ve installed analog cameras in the past few years they’re going to be functional for quite some time.  There’s no need to shortchange that investment.  Video servers will allow you to maintain those analog CCTV cameras while enhancing your video surveillance system to provide the benefits of IP video.

Why Use A Video Server?

So you don’t have to discard your existing analog cameras! A video server allows your functioning analog CCTV video surveillance system to be integrated with a network video system. Gain the benefits of network video without having to replace what’s bought, paid for, and still working.

Coax Cable Is Expensive

Installing coaxial cable is expensive and once installed, hard to justify re-cabling with Cat 5. And with the average lifespan of an analog camera at 5 - 7 years, what fails first are the VCR’s and DVR’s used to record the video. Video servers not only allow you to keep existing analog equipment such as analog CCTV cameras and coaxial cabling but open up a true network video system because the video is consistently sent over an IP network.

A video server connects to an analog video camera via a coaxial cable and converts analog video signals into digital video streams that are then sent over a wired or wireless IP-based network (i.g., LAN, WLAN or Internet).

Video Server Advantages

• Use of standard network and PC server hardware for video recording and management instead of DVR’s or VCR’s
• Scalability in steps of one camera at a time
• Possibility to record off site
• Ability to remotely access and control analog cameras over an IP network
• Future-proof because the system is expanded easily by incorporating IP Cameras

Video Server Components

• Analog Video Input: For connecting analog camera using coaxial cable.
• Processor: For running encoder’s operating system, networking & security functions, encoding analog video using various compression formats, and video analysis. The processor determines the performance of a video encoder measured in frames per second (FPS).
• Memory: For storing firmware (computer program) using Flash, and for buffering of video sequences (using RAM).
• Ethernet/Power over Ethernet Port: To connect to IP network for sending and receiving data, and for powering the unit and the attached camera if Power over Ethernet (PoE) is supported.
• Input/Output (I/O) Connectors: For connecting external devices such as sensors, relays, and lights.
• Audio In: For connecting a microphone or line-in equipment and audio out for connecting to speakers.

What To Consider When Choosing A Video Server

• The number of supported analog channels
• Image quality
• Compression formats
• Resolution
• Frame rate & features such as pan/tilt/zoom support
• Audio
• Event management
• Intelligent video
• Power over Ethernet (PoE)
• Security Functionally

IP Convergence

Video servers are a great problem solver when you’re faced with the challenge of migrating a large investment in analog CCTV cameras to IP video.  Next up I’ll go into more detail about a very important benefit that video servers provide - Event management and intelligent video capabilities with the ability to use advanced video monitoring software

Employment Law Versus Human Rights Law for CCTV Cameras

It comes as no surprise to many that the India has more CCTV cameras per person than anywhere else in the world; leading human rights lawyers to warn that their almost constant use in our everyday lives raises data protection and wider privacy concerns, since they can be used in an intrusive way.

But what are the limits? At the workplace, employers are permitted to monitor workers in so far as it is necessary and proportionate to the management's reasons. CCTV monitoring is often undertaken for security reasons and is thus widely viewed as reasonable. It follows that employees naturally inspire reassurance from their respective employers that they are using CCTV responsibly.

The Information Commissioner's Office (ICO) published its first CCTV Data Protection Code of Practice in 2000 to help CCTV operators comply with the Data Protection Act 1998 (DPA) and follow good practice.

The Code of Practice: Monitoring at Work gives guidance on how to avoid employees calling in the lawyers over breaching the provisions of the DPA. The Code provides that before such monitoring is introduced, an impact assessment must be carried out to determine what (if any) monitoring is justified by the benefits of that monitoring. Under the DPA, any CCTV monitoring must normally be open and backed by fulfilling reasons.

The assessment should consider targeting the monitoring only at the areas of particular risk, confining it to areas where people's expectations of privacy would be low, using video and audio monitoring separately - cases where the use of both to be justified becomes rare. Its operation should only be where deemed necessary rather than continuous - although continuous monitoring may be justified where security is at risk. Finally, whether comparable benefits can be obtained by less intrusive methods and what adverse impact it may have on workers.

In making the assessment it is advisable for the employer to consult trade unions/employee representatives.

If the monitoring is introduced to enforce certain rules and standards, the employer must ensure that the workers are aware of and understand them.

According to one employment lawyer, the use of CCTV to monitor the actions of employees has potential implications in respect of the Data Protection Act and the Human Rights Act 1998 (HRA). If the surveillance is excessive, the implications may vary depending on whether the employer is a public or private body or individual.

If the employer is a private organization or company, then direct reliance on HRA is not possible. Nevertheless, all contracts of employment contain an implied term that employers will not - without reasonable and proper cause - conduct themselves in a manner likely to destroy or seriously damage the relationship of trust between themselves and employees. Yet, it is doubtful that CCTV cameras in obvious places in the workplace would violate this implied term.

On the other hand, an employer in a public body has an obligation to respect workers right to private life under Article 8 of the European Convention on Human Rights (as enacted by HRA). However, this right is a qualified right which means that it may be interfered with for a legitimate purpose in accordance with law and is necessary in the interests of national security, public safety or the economic well-being of the country for the prevention of disorder or crime, for the protection of health or morals, or for the protection of the rights and freedoms of others. The interference must be proportionate in achieving its aim. An example of disproportionate use may arguably be where cameras are put in toilets or changing rooms.

Ultimately, it should be borne in mind that despite the points outlined there is very little scope to impede employers making recordings. Placement and retention of footage must be in accordance with regulations under DPA. As this is a relatively recent development in the law, there are very few decided cases (the DPA does not apply to individuals' private or household purposes).

Assistance for employees comes from either expressing direct concerns to the employer which is the easiest way to resolve the situation or from a union if the worker is a member.

Any personal data collected must be stored securely. Also, regard should be had to the fact that anyone who is captured on CCTV will have a right of access to that footage under the DPA.

The Inner Workings Of CCTV Cameras

With the advancement in technology criminal procedures have also become more advanced. This is why the use of CCTV as a means of security surveillance has increased in recent years. CCTV cameras are used for spy and surveillance purposes. These stealth cameras are sometimes disguised whereas at other times they are placed in obvious locations to ward of the security threat. Nonetheless it is the highly advanced low light monochrome camera that provides the ideal security back up.

Some facts about the CCTV cameras

The CCTV sends out video signals that are directly encoded and fed to a 110 volt power line. You will find all kinds of CCTV cameras out there to come with a companion decoder. This device can plugged anywhere including an ordinary television set at your home. CCTV cameras make use of line level RCA type cables which are the standard cables for all kinds of video output. One of the most advantageous facts about CCTV cameras is the use of infrared technology. This advanced technology gives CCTV cameras the ability to pick up crystal clear video images even in total darkness. The best of CCTV cameras will be able to pick up images in pitch dark up to a distance of thirty feet.

One of the things that have led to the widespread use of CCTV cameras is their durability. You will be able to find CCTV cameras that have the ability to operate when situated at a distance of up to two thousand feet from AC wiring. CCTV cameras will also be able to deliver you top quality picture even when the power lines are loaded with other heavy electronics. Another plus point of the CCTV camera collection is its ability to capture images in an incredible wide angle view.

The technology embedded in CCTV cameras enables them to pick up even the slightest of changes. They are highly sensitive and will be able to deliver you clear images even in total darkness. Some CCTV cameras give you the ability to increase their infrared capability by adding supplemental infrared floodlights.

CCTV cameras are incredibly versatile when it comes to their usability. The fact that you can directly record the captured image onto your home VCR makes it very convenient. Plus the fact that you can use your very own TV set for monitoring purposes.

The latest releases in CCTV cameras provide the ultimate security solutions for home owners and business enterprises alike.  Interested individuals can take advantage of the easy availability of CCTV cameras through the internet. There is a plethora of choices for those seeking CCTV cameras with the different models having varying features. You can check to see which CCTV camera meets your requirements and pick up a bargain deal using the internet. Rest assured you will be able to find one that meets your requirements and fits your budget.