Many projectors are now being manufactured with what
is loosely termed 'wireless' functionality. This article provides some
general information on wireless technology, who can benefit from it, and
what to look out for when buying a wireless projector.
See our range of wireless projectors
What is a wireless projector?
The term 'wireless' is used to describe how the projector receives a picture from its source. No projector is completely wireless, because it still needs a source of power, so it needs a mains cable.
What is the advantage of going wireless?
- Cabling issues are removed, therefore the projector is easier to install, tidier, and there is no signal loss over longer distances.
- Much easier to switch between multiple PC sources (especially useful if you have multiple people presenting from their own laptops)
- Presenters can be more mobile in the room - they do not have to be near the projector or near a wall socket.
What are the limitations of wireless projectors?
There is a slight delay while using a wireless projector between the source and the projector itself, due to the processing time involved in interpreting the wireless signal. This has a very minor effect for most presenters but it does limit animation.
The significant limitation, however, is that
business or education wireless projectors are currently unable to show full motion video in
real time, because they are limited by the bandwidth of the connection.
However, the next step in wireless standards will undoubtedly make full
motion video possible and wireless connections will become commonplace.
If however you want a Full HD 1080p resolution wireless home cinema projector, then Epson have the solution for you. We have tested these Epson's wireless home cinema projectors and they are very very good so much so you can not tell whether the projector is running wired or wireless images . One point to note on this is that the wireless standard Epson uses in their home cinema projectors is WiDi not WiFi. This is a direct wireless connection between source equipment (connected to a an Epson WiDi Transmitter) and the Epson home cinema projector. You can not connect the projector on to you home wireless network.
What do I need to make use of a wireless projector?
A business or education use projector itself may come with one wireless adaptor (or require an optional wireless USB wifi dongle). However, to use the projector you will also need a wireless card for each laptop you want to project from along with the proprietary wireless software from the Manufacturer of the projector you are using running on your PC or laptop. Wireless cards today are inexpensive and easy to install.
What about security?
You might have heard concerns about wireless technology and security. It's a legitimate concern - what if your competitor is sitting outside your building with a laptop? Can he pick up your presentation using a wireless card and get inside knowledge?
Fortunately you can encrypt the signal. This is a software option that comes with the projector software. You can normally choose 64-bit or 128-bit encryption. However, while this protects your data it also slows down the display refresh rate slightly, as the laptop and projector have to do more work to encode and decode the signal.
Wireless technology is rapidly gathering
momentum in the projector marketplace. Animation and video are greatly limited by bandwidth on business or educational projectors but now present for home cinema projectors producing reliable 1080p resolution video.