When I was a kid, it was easy to know who the geek was. They are children in pocket protective caps in shirt pockets. Times have changed. The slide rules and pocket protector are missing, and the cool kid comes with a pocket projector instead of a pocket protector. Many of these new devices are as small as playing cards, thinner than cigarettes, and are everywhere at the Las Vegas Consumer Electronics Show in January. Many people were promised on the spring ship date. Now that spring is on the rise, we should look forward to any day they have on store shelves and online merchants. Please click here for more photos. Click here for FOXNews. Personal Technology Center. Is there a technical problem? Ask our experts at Fox News. com\'s Tech Q&A. The Pocket Projector is the result of two developments. In terms of technology, it is the development of two projections. Display technology for big initially TV screen. Texas Instruments has developed big-DLP chips. Screen display, after use A few years ago, we saw projection technology on many large-screen high-definition TVs. The technology was cheaper than the big ones. Plasma screen and LCD screen. But now the price of these technologies has dropped and DLP is no longer popular. DLP actually uses a deformed micromirror during image creation. A competitive technology, liquid crystal on silicon, or LCoS, is also large- Screen projection device, but failed to catch up. The price of LCD and plasma screens has dropped, both of which have been effectively eliminated. Now both have found new life leases on pocket projectors. Another driver of pocket projector development is the sudden explosion of personal video players, especially Apple\'s iPod. But many other small screen devices from ideas, SanDisk, Microsoft and others. Pocket projectors make it easier to watch movies from these devices in dormitories, hotel rooms, and even places behind air seats. After all, 2 inch of the screen does have its limitations, especially when you use 50-inch or 60-inch screen. Most pocket projectors use DLP Pico chips from Texas Instruments, and many devices actually use the name of the chip. Including the first $399 Pico PK-101 from Optoma. The battery life on Optoma is about an hour and a half, as advertised. You may need additional batteries for serious users. Images can be seen in any range from 10 inch to about 10 feet, although the brighter the room, the whiter the projected surface, the more scattered the 480x640 image will be. The Pico chip also has models from Toshiba and Samsung. Toshiba\'s Pico is also expected to be available in the second quarter and is expected to sell for $399. The pre- The production model we see is not very smooth, but has the same internal structure, roughly the same as the internal structure of Optoma ( I think they may come from the same assembly line). Toshiba also has another DLP projector, TDP- F10, a larger version of boxier, suitable for room use Size demo. But unlike the smaller Pico projector, it\'s not a battery Power, more like a scale. More down versions of traditional projectors. It uses standard VGA cable input and the image is brighter and clearer than the pocketsized versions. The last time we heard that the price could be between $499 and $599, it was about to be shipped in April. As mentioned earlier, the resolution of the pocket projector is VGA quality, so this is obviously not an exciting movie viewing experience. But it will do the job if you understand its limitations. It\'s true whether it\'s a personal watch or a circle of children. Limited battery life. Most use universal USB charging wires. They are equipped with a variety of connectors available, including standard AV-to-video out. Some come with iPod adapters. The audio is processed by a separate channel. All the devices I saw were built in- In a speech hardly worth disturbing. Headphones are more useful. You can also drive external speakers using the headphone connector on your iPod. Some products, such as Optoma, come with an adapter so you can install the projector on your desktop tripod. The Z10 unit of Nextar uses LCoS instead of the TI Pico chip with its own tripod and available screen. The estimated price is $299. The portable screen costs $39 extra. 99. Toy maker WowWee has launched a version called Cinemin Swivel that allows you to tilt a portion of the projector 90 degrees and show the film on the ceiling. It\'s useful, believe me. This technology is developing in a variety of packaging methods. Samsung is bringing Pico projectors and phones together to the market, but so far the company is only planning to sell in South Korea. Toy maker Alex Pacific has launched a low The market-oriented version of the EyeClops mini is expected to cost less than $100. This is just the beginning of the list. It seems that everyone and his brothers are entering the market, including 3 m, Microvision, Aiptek, Aaxa, epq, Beambox and Samsung. This makes you wonder if anyone can gain enough market share to make everything worthwhile. The bottom line is that they are interesting. They do have a purpose. But the \"wow\" factor may be more than the \"useful\" factor. They can be used to do desktop presentations to three or four people on your computer. They watched the movie on the ceiling in the dark hotel room. But even though a dozen companies are bringing them to market, I don\'t know how big the market will be. Of course, I like to travel with Optoma, take it out of my backpack, hang it on my iPod, and say, \"Hey, take a bunch of this \". Although on my Metro North commuter road you will find me watching a movie with Vuzix glasses as my hood is pulled or on Archos media player. But next week I will try to project the video to the seat back of the plane. In any case, it must be better than the cabin movie.
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