 Simple Operation by Just Bringing
Two Devices Close Together |
|
"TransferJet" resolves issues such as complex
connection settings and unstable data transfer
states that existing wireless technologies suffer
from and is a wireless technology that supports
high-speed data transfers over the wireless
segment at up to 560 Mbps (with a maximum
effective rate of 375 Mbps at the protocol level).
"TransferJet" adopts an intuitive interface in
which communication can be performed simply
by bringing the equipment units that you want to
communicate close to each other. Furthermore, it
does not require the complex connection settings
or access points that are required by current
wireless systems. It is hoped that "TransferJet"
will become a universal interface for a wide
variety of applications that can allow, for
example, a still image from a digital camera to
be displayed on a TV screen simply by bringing
the camera up to the TV, or music files to be
transferred simply by bringing a cellular phone
up to the audio equipment. |
| Two Interfaces Provided to Match
Different Product Needs |
|
Sony has now developed two new devices
to allow "TransferJet" functionality to be
included in a wide variety of products. One,
the CXD3267AGG, includes a PCI/Mini PCI
interface for use in stationary equipment, and
the other, the CXD3268AGW, includes an SDIO
interface for use in mobile equipment. (See table
1, figure 1, and figure 2.) |
High Effective Throughput
|
|
In these ICs, Sony achieved a frequency offset
tolerance of 100 ppm by using broadband
communication and using unique Sony-developed
signal-processing technologies. Figure
3 shows the file-transfer throughput vs. frequency
offset characteristics. By using a high-sensitivity
CMOS RF circuit and a high-performance
analog front end, these ICs achieve a wireless
communications speed of 522 Mbps at a distance
of over 3 cm in the reference kit. Figure 4 shows
the transmission separation characteristics at
room temperature (25°C). |
Interference Mitigating Functions for
Mounting in Miniature Equipment
|
|
While there are already a large variety of wireless
systems, such as wireless LANs and Bluetooth*2
available in the market, the CXD3267AGG and
CXD3268AGW were designed from the start
with the influence of these wireless systems in
mind. As a result, these designs are appropriate for
mounting in miniature equipment. (See figure 5.)
*2 Bluetooth is a registered trademark of Bluetooth
SIG, Inc. Sony has acquired permission to use
this trademark. |
Development Environment Available to
Support a Wide Range of Applications
|
|
To allow these devices to be included in a wide variety of electronic equipment, such as cellular
phones, digital video camera, digital still camera,
personal computer, and hard disk recorders,
Sony provides a reference kit and a software
development kit (SDK). (A license is required to
receive the SDK.) |
Extensive Module Lineup
|
|
Sony will be adding modules that include these ICs to their product line. These modules will include miniature modules for mobile equipment, PCI Express Mini Card modules for notebook PCs, and USB connection modules. (See photograph 1.) |
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TransferJet Consortium |
|
| |
The TransferJet Consortium was established
on July 1, 2008. The TransferJet Consortium
establishes the specifications to ensure
interoperability between "TransferJet" products
and aims to develop and promote products and
services applying "TransferJet" technology. As
of November 30, 2009, the consortium consists
of 19 promoters and 22 adopters. |
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Sony Corporation Global Headquarters
The World's First TransferJet™ Compliant
Close Proximity Wireless Transfer ICs
Vol.59