人往高处走，水往低处流: A projector is also office equipment

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What would you categorize as office equipment? A desk and a chair? Of course. A telephone? Definitely. A bookshelf? Yes. A filing cabinet to keep your documents organized?

Well, it depends on how many documents you have to keep. A document shredder? Maybe. A PC? That sounds so 2005! Today, people would be happier if their boss provides them with a notebook instead. A printer? Certainly, but, please, it should be a multifunction printer that can also scan loose pages, send and receive faxes. Internet connection? Nat|rich! Today, Internet is just like the air that we breath. Take it away from us, and we'll die.

What's still missing? If you look around, you'll realize that people are no longer willing to spend too much time on trying to understand what you're telling them. That's why Microsoft's PowerPoint has become a must for professionals working in a team. And, what better way to share PowerPoint slides among team members than a projector?

That's also why in the last few years projectors have been selling in increasing numbers. An engineer needs a projector to present his breakthrough design. A salesperson needs one to take along with his notebook as he tries to make convincing sales offers. A marketing director needs one to present his business ideas to the rest of the company's board. Everybody needs a projector.

And those in the training and education services also need a projector more than ever. Gone are the days when they just jot down their thoughts on transparencies placed on the bed of an overhead projector (OHP). Unless you use a PowerPoint presentation with a bright projector connected to your notebook, you are stuck in the last century.

A projector now comes in different flavors. There are models intended more for business presentations. These projectors are usually bulkier in size, may use the more expensive LCD technology and produce the best image quality. But, business presentation nowadays can also incorporate video playback. So, the line between business and home use is blurring.

There are also the portable ones, the models that traveling trainers and salesmen usually carry in their bags. These models may use the cheaper DLP technology instead of the LCD. Then there are the high-end, niche projectors such as Sony's true HD capable VPLVW50. Be warned, though, that the real high-end projector can cost almost as much as a new Toyota Avanza.

Incidentally, the smallest projector is perhaps BumbleBee from Boxlight Corporation. It weighs less than half a kilogram and is around 12 cm wide. The most interesting thing is that this projector can run on batteries such as Toshiba PA3291U-1BAS Battery,? just like a notebook computer. There are compromises, understandably. For example, you wouldn't in your right mind ever try to use it to give a presentation in a bright room to an audience of 400 people.

Surely a home theater will not be complete without a projector. However, the emphasis is not on brightness. Just like what you'd expect from a movie theater, the images on the screen should be as realistic as possible, and this means that the colors should be as close as they can be to the real world objects.

Some of the basic specifications that you need to check out when shopping for a new projector include the brightness level of the reflected image and the contrast ratio. The brightness level is measured in terms of ANSI Lumens, while the contrast ratio is the comparison between the blackest and the whitest spot on the screen.

Because it uses battery-powered light emitting diodes (LEDs), the BumbleBee produces only 150 ANSI Lumens. It's a far cry from the minimum brightness level a mainstream projector offers.

Daniel Rustandi, Head of Product Marketing Department, Acer Indonesia, agrees. ""Currently, what we'd consider the low-end of the mainstream projector should be able to produce at least 2400 ANSI Lumens,"" he said. His company, which is also the top leader in notebook market in Indonesia, has also been selling projectors for some time.

As to the contrast ratio, 2000:1 is probably still the common norm. A higher contrast will improve image details.

A notebook and a portable projector make a very good combination. That's why a lot of computer makers-Acer, Dell, NEC, Sharp, Sony, Toshiba, etc.-also make and sell projectors. There are also companies that make excellent projectors but not notebooks. InFocus, for example, is a very familiar name as projectors go. Other popular makers include Barco, BenQ, Canon, Epson, Panasonic, Plus and Sanyo. The list is almost as long as the list of targets compiled by our Commission for Corruption Eradication.

What have these company done to improve the capabilities of their products? Plus, for example, reduces colors to grayscale to increase brightness. When displaying a spreadsheet or an X-Ray photo, we don't need color. So, this approach really makes sense.

Acer has also introduced a number of innovations to improve the performance of their projectors. Its ColorBurst technology, for example, will help you get the most faithful color by using six color wheels and an advanced lamp illumination technology. Thanks to this feature, the colors on the screen will be closer to what you see on your notebook's screen.

The light bulb inside a projector is no different from any other light bulb. It has a limited lifespan--around 4,000 hours. It can actually be many long years if you use your projector sparingly for a couple of hours a day on average. However, when it dies an untimely death, you'll usually have to take it to a service center to have it replaced. But not with the new Acer projectors. ""Our Top Load Lamp Design makes it very easy for the users to take out the lamp assembly and replace the bulb themselves,"" said Daniel. This can be a great help if the projector is fixed to the ceiling.

Acer has also raised ease-of-use to a new level. If you don't have a whiteboard, you can use a blackboard as the screen. There is a special one-touch setting for use with a blackboard, so even the schools in the rural areas could now use the projectors.

And there's an internal clock, too. Most speakers habitually exceed their allotted time, and this usually creates a scheduling nightmare. The timer inside Acer's projectors can be set to remind the speaker whenever his time is up.

Like many other projectors, you can also capture your company logo or your name in Acer's latest projectors, and it will appear on the screen as you boot up your notebook. It gives additional aura of professionalism.

Acer calls these features eViewing Management, eTimer Management and eOpening Management. However, a far more important feature is its Instant Pack. In order to extend the life of the bulb and other heated electronic components, most other projectors require that you let them cool down before unplugging the power cable. Unfortunately, this can take a few minutes, and you may already be late for another appointment. Acer's Instant Pack allows you to quickly unplug the projector, put it in its bag and rush to your next presentation. It's truly a nifty feature.

Other things that you should look at are features such as resolution (the 800x600 SVGA as opposed to the higher 1024x758 XGA), aspect ratio (4:3 as opposed to the wide format 16:9), the ability to automatically detect the input format, keystone correction (to maintain perfect display rectangle), availability of the S-Video input port and a low noise level. More demanding users may check out whether the projectors have DVI port for digital sources.

There are a lot of choices on the market. As usual, you will need to read the latest reviews before making your final purchase decision.

人往高处走，水往低处流

2012年3月2日星期五

A projector is also office equipment

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