EP 1068738 A1 20010117 - SYNCHRONIZATION METHOD FOR RFID SYSTEM INCLUDING TAGS HAVING DIFFERENT MEMORY SIZES
Title (en)
SYNCHRONIZATION METHOD FOR RFID SYSTEM INCLUDING TAGS HAVING DIFFERENT MEMORY SIZES
Title (de)
SYNCHRONISATIONSVERFAHREN FÜR RFID SYSTEM MIT ETIKETTEN MIT UNTERSCHIEDLICHEN SPREICHERGRÖSSEN
Title (fr)
PROCEDE DE SYNCHRONISATION POUR UN SYSTEME HFID COMPRENANT DES ETIQUETTES PRESENTANT DES CAPACITES DE MEMOIRE DIFFERENTES
Publication
Application
Priority
- US 9904860 W 19990304
- US 7798798 P 19980313
- US 25659199 A 19990223
Abstract (en)
[origin: WO9946940A1] A synchronization method for an RFID system (10) including tags (40-1 to 40-n) having different memory sizes, employs a convention wherein sync words and sync bits are stored in tag memory (407) among data bits so that a reader (30) may readily identify the sync word on an RF signal (408) transmitted by a tag (40-1) and serially modulated by repetitions of the contents of the tag memory (407). After identifying the sync word, an RFID reader (30) reads data bits following the identified sync word until a next sync word is received, while ignoring the sync bits interspersed among the data bits.
IPC 1-7
IPC 8 full level
G06F 11/10 (2006.01); G06K 7/00 (2006.01); G06K 17/00 (2006.01); G06K 19/07 (2006.01); G07C 9/00 (2006.01); G08G 1/017 (2006.01)
CPC (source: EP KR)
G06K 7/0008 (2013.01 - EP); G06K 19/0723 (2013.01 - EP); G07C 9/28 (2020.01 - EP); G08G 1/017 (2013.01 - EP); H04Q 1/00 (2013.01 - KR)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9946940 A1 19990916; AU 2896699 A 19990927; BR 9908714 A 20001121; CA 2322152 A1 19990916; CN 1313011 A 20010912; EP 1068738 A1 20010117; EP 1068738 A4 20020703; IL 137749 A0 20011031; JP 2003532935 A 20031105; KR 20010052206 A 20010625
DOCDB simple family (application)
US 9904860 W 19990304; AU 2896699 A 19990304; BR 9908714 A 19990304; CA 2322152 A 19990304; CN 99803980 A 19990304; EP 99909858 A 19990304; IL 13774999 A 19990304; JP 2000536204 A 19990304; KR 20007010095 A 20000909