Mobile phone as a small, portable digital devices, with portable, powerful, etc., but the storage capacity is not big enough, often need to interact with the computer, which data transmission interface problems. Data transmission interface with personal computers and other mobile devices to connect to the interface. By virtue of interfaces and other devices can be achieved between uploading and downloading, data synchronization. Common data transfer interface with a USB port, infrared port and Bluetooth interface, here for everyone to do a brief introduction:
According to leading market research firm, said a survey report isuppli, 2010, the world will sell 764 million handsets, with its low cost, simple and quick connection, compatibility and strong, has good scalability and speed, etc. , USB interface will remain the most dominant of the data transfer interface. However, based on WLAN (wireless local area network) technology Bluetooth and WiFi will seize a larger market share.
Bluetooth is a literal translation comes from the Bluetooth is a short-range wireless communication technology, electronic devices to each other and connected via Bluetooth, eliminating the traditional wires. Through a wireless receiver on a chip, equipped with Bluetooth technology, electronic products can be 10 meters distance from each other connected, the transmission speed of up to 1 megabyte per second. Bluetooth is used for short-range wireless personal area network transmission, and has a low cost, the main goal is to provide a wireless transmission environment prevailing around the world, through radio waves to achieve all of the information transmission between the mobile device service.
WiFi's full name is Wireless Fidelity, also known as the 802.11b standard. Its biggest advantage is that higher transmission speed up to 11Mbps, while its effective range is also very long while and have a variety of 802.11DSSS devices. Different with Bluetooth technology, WiFi has a greater reach and higher transmission rates, so the current WiFi mobile phone has become the fashion industry. Because the WiFi band worldwide is without any telecom operator license free band, so a WLAN wireless devices can be used worldwide, the cost is extremely low and extremely high-bandwidth wireless data air interface.WiFi coverage area, users can quickly browse the Web within, at any time to answer calls, then no need to worry about slow and costly problems.
Ultra-wideband (UWB) wireless communication technology in recent years has become a short-range, high-speed wireless network of the most popular physical layer technologies.Many world famous companies, research institutions, standardization organizations are actively involved in ultra-wideband wireless communications technology research, development and standardization work. South Korean mobile operator SK Telecom and broadband IC design in the United States of support, plans to become the world's first launch of ultra-wideband (UWB) services companies. Mid-2007, SK Telecom is expected to launch a new mobile phone prototype ultra-wideband, the first UWB-enabled mobile phones will work in the 3.1GHz ~ 4.7GHz frequency band; in the near future, SK Telecom will launch commercial UWB products and services. |
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