AWG 64 MB MEMORY CARD FOR WII Bedienungsanleitung PDF herunterladen (Seite 14)

3.3 Description of HF RFID standards
High frequency (HF) vicinity RFID communication is specified by ISO 15693, ISO 14443 
standards. The first one, targeted for tags containing only ID and becoming popular for single 
use transport tickets is out of the project focus. ISO 14443A corresponds to tag brand Mifare 
from NXP/Philips most widely used in the world. The conventional access speed is 106kbps, 
modulation schema is 100% ASK, Miller encoding. Sony developed competitive IC under 
brand FeliCa working at 212kbps 10% ASK modulation depth with Manchester encoding. 
Both modulation schema support speeds up to 1 Mbps, access range for handheld devices is 
2-5 cm due the power supply limits. FeliCa (not ISO standardized) is widely used in Far-East. 
The most of reader ICs support both standards, meaning devices bought in Japan should work 
in Europe with European ISO14443A tags. The same IC can read ISO 15693 tags as well, 
making 13.56MHz RFID technology extremely flexible and universal. 
Joint   venture   between   NXP   and   Sony   was   established   in   2007   to   produce   universal   chips, 
showing continuation of related technology development around the world for the next years. 
Mifare   is  the   most   widely   installed   contactless   smart   card   (technically   RFID  tag   with   large 
memory and secure microcontroller) technology in the world with about 1.2 billion smart card 
chips and more than seven million reader modules sold (Contactless News, 2006). FeliCa ICs 
shipment was 170 million units in 2006 and 30 million of these are mobile FeliCa chips for use in 
mobile phones (osaifu-keytai
7
) in Japan. From instrumentation point of view those phones should 
be compatible with proposed SMARTMUSEUM tag access solution. Based on information of 
NTT DoCoMo there were over 200000 contactless payment terminals installed in Japan (Sept. 
2007) and 3.7 Milions of DCMX service subscribers. The number of RFID based contactless 
payment service subscribers increased 5 times in one year
8
. Booming of cellular RFID technology 
can   be   expected   in   Europe   as   well   creating   technological   base   for   wide   usage   of 
SMARTMUSEUM solution.
3.4 HF RFID Tag selection
The security features of HF tag access are not relevant in the present project context. The most 
essential parameter for tags to  be   selected   is   data area. Suitable tags for   SMARTMUSEUM 
include: 
1. ISO14443-A, NXP Mifare Standard 1k tags with total memory size of 1 kbyte, writable 
memory 720 characters
9
, 
2. ISO14443-A, NXP Mifare Standard 4k tags with total user memory size of 3480 bytes
10
,
3. ISO14443-A, NXP Mifare DESfire tags with total writable memory size of 7 kbytes
11
,
4. It is recommended to use tags compatible with NFC Forum 1 specification, e.g. Topaz, 
Jewel   tags   from   Innovision
12
.   So   far   the   largest   tags   available   contain   96   bytes   of 
rewritable and 6 bytes of OTP memory that is insufficient for most of SMARTMUSEUM 
applications. 
7 http://www.nttdocomo.co.jp/english/service/osaifu/index.html   
8 http://www.nttdocomo.co.jp/english/corporate/ir/binary/pdf/library/presentation/080108/all_e.pdf   
9 http://www.nxp.com/acrobat_download/other/identification/M001053_MF1ICS50_rev5_3.pdf   
10 http://www.nxp.com/acrobat_download/other/identification/M043541_MF1ICS70_Fspec_rev4_1.pdf   
11 http://www.nxp.com/acrobat_download/datasheets/MF3ICD8101_SDS_N_1.pdf   
12 http://www.innovision-group.com/products.php   
Grant Agreement Number: FP7-216923
Acronym: SMARTMUSEUM
Project title: Cultural Heritage Knowledge Exchange 
Platform
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