Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06K
GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
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7/00
Methods or arrangements for sensing record carriers,; e.g. for reading patterns;
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G06K7/10
by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
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G06K7/10009
sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
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G06K7/10237
the reader and the record carrier being capable of selectively switching between reader and record carrier appearance, e.g. in near field communication [NFC] devices where the NFC device may function as an RFID reader or as an RFID tag
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G06K7/10247
issues specific to the use of single wire protocol [SWP] in NFC like devices
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G06K7/10247

Method and Device for Managing Information Exchange Between a Main Element, for Example a NFC Controller, and a Set of at Least Two Auxillary Elements
20180279104 · 2018-09-27 ·

A device, including a main element (ME) and a set of at least two auxiliary elements (SEi), said main element including a master SWP interface (MINT), each auxiliary element including a slave SWP interface (SLINTi) connected to said master SWP interface of said NFC element through a controllably switchable SWP link (LK) and management means (PRM, CTLM, AMGi) configured to control said SWP link switching for selectively activating at once only one slave SWP interface on said SWP link.

Method and Device for Managing Information Exchange Between a Main Element, for Example a NFC Controller, and a Set of at Least Two Auxillary Elements
20180192273 · 2018-07-05 ·

A device, including a main element (ME) and a set of at least two auxiliary elements (SEi), said main element including a master SWP interface (MINT), each auxiliary element including a slave SWP interface (SLINTi) connected to said master SWP interface of said NFC element through a controllably switchable SWP link (LK) and management means (PRM, CTLM, AMGi) configured to control said SWP link switching for selectively activating at once only one slave SWP interface on said SWP link.

Antenna loop configuration for more efficiently surrounding the high intensity area of the magnetic field produced by an IC card
09870493 · 2018-01-16 · ·

A communication device including a device-side antenna 30 for wireless communication with an IC card 10 including a card-side antenna 11 wound in a rectangular form. The antenna 30 is formed in one or multiple loops. During the wireless communication with the IC card 10 having an inner perimeter with a long dimension of 69 mm and a short dimension of 38 mm at a distance of 25 mm, an inner perimeter of the antenna 30 is formed at a position at which intensity H of a magnetic field produced by the card-side antenna 11 in a direction perpendicular to a surface on which the antenna 30 is disposed is in a range expressed by inequation (1):
0.037I/4<H<0.063I/4(1)
where I is a current of the card-side antenna [A] and is pi.

METHOD AND DEVICE FOR MANAGING INFORMATION EXCHANGE BETWEEN A MAIN ELEMENT, FOR EXAMPLE A NFC CONTROLLER, AND A SET OF AT LEAST TWO AUXILIARY ELEMENTS
20170048658 · 2017-02-16 ·

Device, comprising a main element (ME) and a set of at least two auxiliary elements (SEi), said main element including a master SWP interface (MINT), each auxiliary element including a slave SWP interface (SLINTi) connected to said master SWP interface of said NFC element through a controllably switchable SWP link (LK) and management means (PRM, CTLM, AMGi) configured to control said SWP link switching for selectively activating at once only one slave SWP interface on said SWP link.

Techniques for activating single wire communications
09554331 · 2017-01-24 · ·

Aspects disclosed herein relate to activating a single wire protocol (SWP) interface with a circuit card. A single wire protocol (SWP) activation procedure is initiated with a circuit card. During the SWP activation procedure, an unexpected frame may be received, and a different SWP activation procedure may be initiated with the circuit card based at least in part on receiving the unexpected frame during the SWP activation procedure.