ISO/IEC was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 17, Cards and personal identification. ISO/IEC , is an ISO standard for vicinity cards, i.e. cards which can be read from a greater ISO/IEC Identification cards — Contactless integrated circuit cards — Vicinity cards — Part 2: Air interface and initialization. ISO/IEC (E). PDF disclaimer. This PDF file may contain embedded typefaces. In accordance with Adobe’s licensing policy, this file.
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Thus both power and bi-directional communications form the air interface between the vicinity card and the coupler.
Proof sent to secretariat or Iiso ballot initiated: List of International Electrotechnical Commission standards. Monday to Friday – ISO standards by standard number. The coupler sends commands to the card by modulating the powering field and by using a modulation system known as pulse position modulation, whereby the position of a single pulse relative to a known reference point codes the value of a nibble or byte of data.
In addition, 156933-2 card can be attached to objects like bags and valuable items which can then be tracked whilst in the vicinity of a reading device. Therefore this version remains current.
The card responds to the coupler by drawing more or less power from the field and generates one or two sub-carriers of around kHz. This article relies too much on references to primary sources. These are switched on and off to provide Manchester-encoded data that are then detected by the coupler.
As the vicinity cards have to operate at a greater distance, the necessary magnetic field is less 0. This page was 155693-2 edited on 22 Novemberat The first byte of the UID should always be 0xE0. Views Read Edit View history. From Wikipedia, the free encyclopedia. Articles lacking reliable references from April All articles lacking reliable references.
The data frame delimitors are code violations, a start of frame is:. Life cycle A standard is reviewed every 5 years 00 Preliminary. The data are sent using a Manchester code. Power is coupled to the vicinity card by an isp. This allows the card to draw the maximum energy from the field almost continuously. It is the flexibility of the interface to select one or two sub-carriers when communicating from card to coupler, whilst also using slow or fast data rates 15693–2 the coupler to the card, that allows systems 15693-22 be tuned to suit different operational requirements ranging from use with high RF noise at short range to low RF noise at long range.
Please improve this by adding secondary or tertiary sources. Air interface and initialization. A vicinity card only responds when it receives a valid command that selects a single card from a possible collection of cards within range of the coupler.
When sufficient power is received by the card, it is able to respond to commands sent from the coupler. Check out our FAQs.
A logic 0 starts with eight pulses of Retrieved from ” https: Final text received or FDIS registered for formal approval. Frequency-shift keying by switching between a April Learn how and when to remove this template message. This process of collision detection and selection, also known as anti-collision, is made possible by detecting the unique identification number encoded into every card.
Such cards can normally be read out by a reader without being powered themselves, as the reader will supply the necessary power to the card over the air wireless.