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 card responds to the coupler by drawing more or less power from the field and generates one or two sub-carriers of around kHz. Please improve this by adding secondary or tertiary sources.
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 ixo to a known reference point codes the value of a nibble or byte of data. This allows the card to draw the maximum energy from the field almost continuously. A vicinity card only responds when it receives a valid command that selects a single card from a possible collection of iiso within range of the coupler.
These are switched on and off to provide Manchester-encoded data that are then detected by the coupler. Air interface and initialization. ISO standards by standard number.
Views Read Edit View history. Frequency-shift keying by switching between a Monday to Friday – 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.
ISO/IEC – Wikipedia
The data are sent using a Manchester code. In addition, the iiso can be attached to objects like bags and valuable items which can then be tracked whilst in the vicinity of a reading device.
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. The first isso of the UID should always be 0xE0. The data frame delimitors are code violations, a start of frame is:.
Therefore this version remains current. Retrieved from ” https: Articles lacking reliable references from April All articles lacking reliable references.
This article relies too much on references to primary sources. It is the flexibility of the interface to select one or two 156933-2 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.
A logic 0 starts with eight pulses of When sufficient power is received by the card, it is able to respond to commands sent from the coupler.
April Learn how and when to remove this template message. Thus both power and bi-directional communications form the air interface between the vicinity card and the coupler.
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. Life cycle A standard is reviewed every 5 years 00 Preliminary. Vicinity cards, which have no power 156932- 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.
Final text received or FDIS registered for formal approval. List of International Electrotechnical 15693-22 standards.
From Wikipedia, the free encyclopedia. This page was last edited on 22 Novemberat Check out our FAQs. As the vicinity cards have to operate at a greater distance, the necessary magnetic field is less sio.