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| Тема |
 Техническа информация [re: Cherniq] |
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| Автор |
Чepнorлaв (рекордьор) |
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| Публикувано | 27.09.02 11:00 |
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Техническа информация
:: Информация относно радиацията излъчвана от различните телефони
:: Информация за нивата на излъчвана радиация от някои модели телефони
и
:: Информация относно батерии
:: Служебни съобщения при набиране на номер от Мобилтел
:: Инструкции за мобилни телефони
Какво означават въпросните съкращения
AMPS — Advanced Mobile Phone System. Analog transmission technology that operates in the 800MHz frequency band.
TDMA — Time Division Multiple Access. Digital transmission technology that operates in either 800MHz or 1900MHz frequency bands. The frequency band is split into a number of channels, so that several calls or data can share a single channel without interfering with one another.
CDMA — Code Division Multiple Access. Digital transmission technology that operates in the 800MHz or 1900MHz frequency bands. CDMA spreads the information contained in a particular signal over a much greater bandwidth than the original signal.
GSM — Global System for Mobile communications. Digital transmission technology that operates in the 900MHz and 1800MHz frequency bands in Asia and Europe, and 1900MHz in the U.S. GSM is currently the dominant digital mobile phone standard for Europe and Asia. While not originally popular in the U.S., many carriers are beginning to switch to GSM technology.
STN (Super Twisted Nematic) LCD — Moderate in price and easy on power consumption. These displays have a low data-reaction rate that can cause an afterimage, making it difficult to view moving pictures and graphics or move quickly through the menu. STN LCDs are used mainly for low-priced color mobile phones. Displays 256 colors, 4,096 colors, and 65,000 colors.
TFT (Thin Film Transistor) LCD — These offer strikingly clear images and high data-reaction rates. TFT LCDs are also used for high-end products like laptop computers and LCD monitors. Their weak point is a high power consumption that can lead to a frequent battery recharge/exchange. Displays 4,096 colors, 65,000 colors, and 260,000 colors.
TFD (Thin Film Diode) LCD — An improvement over existing STN LCDs. TFD LCDs have the image quality and resolution equivalent to those of TFT LCD, and also offer relatively higher data-reaction rate. Power consumption is as low as the STN LCD, which makes battery recharge/exchange less frequent. Displays 65,000 colors.
OELD (Organic Electro Luminescence Display)— Unlike the existing displays, OELD has its own lighting elements without the need of a back light. Sporting a high data-reaction rate and low power consumption, it is considered the next-generation cellular phone LCD. However, compared to other displays, current OELD has a short lifespan, approximately 10,000 hours. Displays 1 color, 4 colors, and 256 colors.
:: Обзор системы GSM
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На руски, pdf формат, 258 стр.
XoлдънРедактирано от Чo :) на 25.09.07 10:01.
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