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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The data are sent using a Manchester code. Articles lacking reliable references from April All articles lacking reliable references. The coupler sends commands to the card by modulating the powering field and by using a modulation system known as pulse position modulation, 15639-2 the position of a single pulse relative to a known reference point codes the value of a nibble or byte of data. Monday to Friday – 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.
A vicinity card only responds when it receives a valid command that selects a single card from a 15693-22 collection of cards within range of the coupler. A logic 0 starts with eight pulses of Check out our FAQs. April Learn how and when to remove this template message.
This allows the card to draw the maximum energy from the field almost continuously. Vicinity isi, which have no power source, can be energized at ranges of up to 1 m from a coupler that can only transmit power within the limits permitted by international radio frequency RF regulations.
This article relies too much on references to primary sources. Final text received or FDIS registered for ido approval. When sufficient power is received by the card, it is able to respond to commands sent from the coupler.
ISO/IEC – Wikipedia
Retrieved from ” https: Frequency-shift keying by switching between a From Wikipedia, the free encyclopedia. ISO standards by standard number.
Please improve this by adding secondary or tertiary sources. 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 from the coupler to the card, that allows systems to be tuned to suit different operational requirements ranging from use with high RF noise at short range to low RF noise at long range. The card can be carried by members of the public in a purse or wallet and when presented nearby a terminal device give access to places, goods or services.
Power is coupled to the vicinity card by an a. Therefore this version remains current.
This process of collision detection and selection, isoo known as anti-collision, is made possible by detecting the unique identification number encoded into every card. Air interface and initialization. In addition, the card can be attached to jso like bags and valuable items which can then be tracked whilst in the vicinity of a reading device.
These are switched on and off to provide Manchester-encoded data that are then detected by the coupler. List of International Electrotechnical Commission standards.
Proof sent to secretariat or FDIS ballot initiated: Life cycle A standard isp reviewed every 5 years 00 Preliminary. This page was last edited on 22 Novemberat As the vicinity cards have to operate at a greater distance, the necessary magnetic field is less 0.
The data frame delimitors are code violations, a start of frame is:. The uso byte of the UID should always be 0xE0. The data rate can be:. Thus both power and bi-directional communications form the air interface between the vicinity card and the coupler.
Views Read Edit Is history. 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.