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ISO/IEC14443-4 标准协议
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ISO/IEC CD 14443-4
ISO (the International Organisation for Standardisation) and IEC (the International Electrotechnical Commission)
form the specialised system for worldwide standardisation. National bodies that are members of ISO or IEC
participate in the development of International Standards through technical committees established by the
respective organisation to deal with particular fields of technical activity. ISO and IEC technical committees
collaborate in fields of mutual interest. Other international organisations, governmental and non-governmental, in
liaison with ISO and IEC, also take part in the work.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote.
International Standard ISO/IEC 14443-4 was prepared by Joint Technical Committee ISO/IEC JTC1, Information
technology, Subcommittee SC17, Identification cards and related devices.
ISO/IEC 14443 consists of the following parts, under the general title Identification cards - Contactless integrated
circuit(s) cards - Proximity cards:
¾ Part 1: Physical characteristics
¾ Part 2: Radio frequency power and signal interface
¾ Part 3: Initialization and anticollision
¾ Part 4: Transmission protocol
The annexes A, B and C of this part of ISO/IEC 14443 are for information only.
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