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1. CA2644537 - SIGNALISATION DANS UN APPAREIL D'IDENTIFICATION ELECTROMAGNETIQUE

Office
Canada
Numéro de la demande 2644537
Date de la demande 02.03.2007
Numéro de publication 2644537
Date de publication 07.09.2007
Type de publication A1
CIB
G06K 7/00
GPHYSIQUE
06CALCUL; COMPTAGE
KRECONNAISSANCE DES DONNÉES; PRÉSENTATION DES DONNÉES; SUPPORTS D'ENREGISTREMENT; MANIPULATION DES SUPPORTS D'ENREGISTREMENT
7Méthodes ou dispositions pour la lecture de supports d'enregistrement
H04L 1/00
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
1Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
CPC
G06K 7/0008
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers, ; e.g. for reading patterns;
0008General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
G06K 7/10297
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers, ; e.g. for reading patterns;
10by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
10009sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
10297arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
H04L 25/493
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
38Synchronous or start-stop systems, e.g. for Baudot code
40Transmitting circuits; Receiving circuits
49using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; ; Baseband coding techniques specific to data transmission systems
493by transition coding, i.e. the time-position or direction of a transition being encoded before transmission
H04L 27/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
02Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
Déposants WAVETREND TECHNOLOGIES LIMITED
Inventeurs VAN NIEKERK, CHICOT
GOOSEN, STEFAN EBEN
REDDY, DES
NEUHOFF, CHARL
EVANGELIDIS, ANDREW
SCHOEMAN, ERICH
Données relatives à la priorité 0604342.6 03.03.2006 GB
Titre
(EN) SIGNALLING IN ELECTROMAGNETIC IDENTIFICATION APPARATUS
(FR) SIGNALISATION DANS UN APPAREIL D'IDENTIFICATION ELECTROMAGNETIQUE
Abrégé
(EN)
There is provided a method of signalling in an RFID network comprising active transponders and networked reader units deployed to receive communications from t transponders. The method comprises employing amplitude shift keying to encode data base on transitions between a high and a low signal according to a scheme in which respective ones of a plurality of bit combinations of binary numbers are transmitted as different predetermined delays between signal transitions.

Également publié en tant que
KR1020087024452
MXMX/a/2008/011293