Contactless IC card

It conbines recognition technology of the radio frequency and IC card technology together successfully.Have finished having no sourcing(there is no power in card) and avoiding being exposed to this difficult problem.It is a great break-through of the electronic device field.Card in will certainly close to read surface of writing etc. from range (usually for 5-10mm).Finish reading the operation of writing of the data through the transmission of the radiowave.

1. Untouchable IC card and media reader is it write operating to read to finish to come through radiowave.The communication between the two is 13.56MHZ.The untouchable IC card itself is a passive card.The signal of reading the writing device and sending out is superposed by two parts and made up:A part power signal, signal this after receiving by card , produce energy is it supply with chip work to come one twinkling of an eye with L/C of its elf.Another part is order and data signal.Command chip finish to read , fix , store data.Return signal is it read person who write to give , finish once read and write operating.Reading the writing device generally by the one-chip computer, special-purpose intelligent object and aerial make up.Furnished with with the communication interface of PC, types the mouth, I/O mouth ,etc., in order to apply to different fields.

2. Dividing area within the untouchable intelligent card Divided into two parts within the untouchable intelligent card: Systematic user district of district (CDF ) (ADF) Systematic district: Used by card manufacturer and system developer and hairpin organization. User district: For preserving the holder's relevant data information.

3. Comparing with the contact-type IC card, the non- contact-type card has the following advantage:

i) Dependability is high With read writing device there is no machinery to keep in touch contact-type IC card non.Have avoided various kinds of troubles that are produced because of contacting and studying in writing. For example: Because rude to insert the card, does not nip the other thing to insert in , the dust or the greasy dirt cause and contact the bad trouble that causes.In addition, the non- contact-type card surface has not uncovered the chip.Needn't be afraid the chip comes off.The static is punctured , crooked question of damaging etc. Since benefit cards to print , improve the use dependability of the card.

ii) Easy to operate Because does not contact the communication.Reading the writing device can operate the card within the range of 10CM.So needn't insert and set aside the card , help users use very much.There is no directionality when being used in the non- contact-type card.The card can skim over and read the writing device surface in the wanton direction , can already finish operating. This has improved the speed used each time greatly.

iii) Defend the conflict

Defend the conflict mechanism fast in the non- contact-type card.Can prevent interfering the data between cards.So read person who write can deal with many pieces of contact-type IC card non- " at the same time ".Improve the running side by side used, improve the speed of system work virtually.

iv) Can be suitable for many kinds of application

The sequence number of the non- contact-type card is only.Before the products are dispatched from the factory already this sequence number solidification manufacturer. Can't alter again.The non- contact-type card is with adopting the two-way mechanism of proving while reading the writing devices.Legitimacy of the IC card that namely read the writing device to prove.At the same time the IC card proves that the legitimacy of the writing device is studied in too.Non- contact-type to block before not dealing with wanting and reading writing device not to carry on the mutual authentication three times.And all data are encrypted in the course of communication.In addition card all sector have own operation password and visit terms.The memory structure characteristic of the contact-type card makes its one calorie multi-purpose.Can apply to different systems , users can establish different passwords and visit condition according to different application. v) It is of good performance to encrypt

Contactless the products dailily and have:Mifare 1 S50 / Mifare 1 S70 / FM11RF08

◆Chip: Philips Mifare　1 S50

◆Memory capacity:8Kbit, 16 area, two groups of passwords of each fen area

◆Operating frequency: 13.56MHZ

◆Speed of communication:106Kboud

◆Read and write the distance:2.5-10CM

◆Read and write timel;1-2MS

◆Working temperature : -20℃-85℃

◆Wipe and write the number of times:

◆The data are kept:>10years

◆Specification:0. 87*85. 5*54 /

◆Encapsulation material:PVC ,

◆Encapsulation craft:Ultrasonic wave plants the line / touches and welds automatically automatically

◆Make the standard:ISO 14443, ISO 10536