TransferJet
TransferJet is a wireless short-range communication technology developed by Sony that allows data to be transmitted at very high speed between two devices that are in contact or are very close to each other over a maximum distance of three centimeters between the coupling antennas Transfer directions.
application
This allows photos or video streams to be transferred between devices without a cable, e.g. B. between cameras with each other, from a camera to a computer, a television or a printer, or z. B. from a content provider machine to the smartphone. Devices with TransferJet technology have the TransferJet logo at the point where the inductive coupler is installed: if you want to let two devices communicate with each other, you have to bring their respective TransferJet logos as close as possible to each other, or let them touch there.
TransferJet specification
| Carrier frequency | 4.48 GHz |
|---|---|
| Bandwidth | 560 MHz |
| Transmission power | At or below -70 dBm / MHz (average)
Complies with low-intensity radio emission regulations in Japan, Taiwan, the EU, and the United States. |
| Data transfer rate | Max. 560 Mbit / s (gross) / max. 375 Mbit / s (effective throughput)
The system can adapt the transmission rate to the quality of the transmission situation. |
| modulation |
Direct Sequence Spread Spectrum (DSSS)
π / 2-shifted BPSK |
| bridgeable distance | a few centimeters (nominal) |
| Connection topology | Point-to-point |
| Antenna type | Electrical inductive coupler for longitudinal waves |
| Standardization bodies | ECMA 398, ISO / IEC 17568 |
TransferJet can be configured in such a way that a device exchanges data only with certain other TransferJet partners, or with any other device, but this only poses a limited risk, because the short range makes the process tap-proof against attackers at a distance of more than a few centimeters. The transmission speed is comparable to a fast WLAN connection and leaves other short-range communication technologies such as Bluetooth or NFC far behind.
TransferJet was first presented in January 2008 at the CES in Las Vegas, in July 2008 the TransferJet Consortium was founded. Since July 2012, this has been led by nine “promoter” companies ( Hitachi , JVC Kenwood , Nikon , Olympus , Panasonic , Pioneer , Seiko Epson , Sony , Toshiba ); By May 2013, more than 30 other electronics companies had joined as “adopters”, including Samsung , Sharp and Fujitsu . The first commercial products with TransferJet have been on the market in Japan since 2010: digital cameras, notebooks, USB adapters, FlashRAM cards from Sony. With Sony digital cameras with the TransferJet logo, please note that the TransferJet function can only be used if the TransferJet memory stick MS-JX8G, which can be purchased separately, is also in the camera.
The microSDIO cards and USB plug-in adapters presented by Toshiba at the Mobile World Congress in Barcelona in February 2013 and are now available now allow this technology to be used in a wide variety of mobile devices, and the interface chips from Toshiba, which are now also available, can be used in autumn 2013 expect more devices with integrated TransferJet technology.
Compatibility testing equipment is provided by Agilent Technologies and certification service is provided by Allion Test Labs and XXCAL Japan .
