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Sony introduces TransferJet high speed wireless data transfer
Posted on 8-Jan-2008 12:29. | Tags Filed under: News.

Sony is announcing "TransferJet", a new Close Proximity Wireless Transfer Technology enabling the high speed transfer of large data files (photos, HD images, etc.) between electronic devices such as mobile phones, digital cameras, digital video cameras, computers and TVs.

Using this technology, data can be sent at speeds of 560Mbps (megabits per second).

TransferJet is a wireless technology which eliminates the need for complex setup and operation. For example, just touching a TV with a digital camera enables photos to be instantaneously displayed on the TV screen. Alternatively, downloaded music content can be easily enjoyed by touching a mobile phone to a portable audio player. TransferJet can be used as a Universal Interface among a wide variety of consumer electronics devices.

Sony will actively promote the use of TransferJet across the consumer electronics industry and seek to enhance the enjoyment of mobile device-based content through the introduction of various products and services based on this technology.

Users are also able to register their electronic products to enable TransferJet to recognize specific products. For example, by registering only the devices within their household, users can prevent external data leakage. The company says operation is also intuitive, and as there is no host/target relationship, data transfer can take place between mobile phones and PCs for example, as well as between mobile devices.

TransferJet's physical layer transmission rate is 560Mbps, and even allowing for error corrections and protocol overheads, the effective physical layer transmission rate is 375Mbps.

TransferJet is also capable of selecting the appropriate data transmission rate according to the wireless environment. Even if the conditions for transmission deteriorate, it will maintain the highest possible wireless connectivity by automatically lowering the data transmission rate.

As TransferJet is a close proximity wireless system which radiates very low-intensity radio waves, it causes almost no interference to other wireless systems, and there is no impact to performance even if multiple users simultaneously multiple TransferJet system.

Sony's newly developed "TransferJet Coupler" is based on electric induction field coupling to deliver propagation performance compared to conventional radiation field based antennas. It maintains high transmission gain and efficient coupling in near-field proximity, while providing sharp attenuation over longer distances to avoid interference with other wireless systems. Furthermore, as there is no antenna polarization it is possible to transmit data without any performance loss, regardless of the contact angle of the electronic devices.

The system uses the 4.48 GHz band and transmission power is -70dBm/MHz or less. Devices will communicate with each other within 3 cm.

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