DE69710221T2 - Drahtloses kommunikationssystem und verfahren mit mehreren wählbaren antennen - Google Patents

Drahtloses kommunikationssystem und verfahren mit mehreren wählbaren antennen

Info

Publication number
DE69710221T2
DE69710221T2 DE69710221T DE69710221T DE69710221T2 DE 69710221 T2 DE69710221 T2 DE 69710221T2 DE 69710221 T DE69710221 T DE 69710221T DE 69710221 T DE69710221 T DE 69710221T DE 69710221 T2 DE69710221 T2 DE 69710221T2
Authority
DE
Germany
Prior art keywords
transponder
antennas
wireless communication
communication system
pointers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69710221T
Other languages
English (en)
Other versions
DE69710221D1 (de
Inventor
W Wood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Micron Technology Inc
Original Assignee
Micron Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/772,173 external-priority patent/US5842118A/en
Application filed by Micron Technology Inc filed Critical Micron Technology Inc
Publication of DE69710221D1 publication Critical patent/DE69710221D1/de
Application granted granted Critical
Publication of DE69710221T2 publication Critical patent/DE69710221T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
    • H04B7/0808—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception
DE69710221T 1996-12-18 1997-12-16 Drahtloses kommunikationssystem und verfahren mit mehreren wählbaren antennen Expired - Lifetime DE69710221T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/772,173 US5842118A (en) 1996-12-18 1996-12-18 Communication system including diversity antenna queuing
US08/907,689 US6289209B1 (en) 1996-12-18 1997-08-08 Wireless communication system, radio frequency communications system, wireless communications method, radio frequency communications method
PCT/US1997/023105 WO1998027670A1 (en) 1996-12-18 1997-12-16 Wireless communication system including a plurality of selectable antennas and wireless communications methods

Publications (2)

Publication Number Publication Date
DE69710221D1 DE69710221D1 (de) 2002-03-14
DE69710221T2 true DE69710221T2 (de) 2002-09-19

Family

ID=27118565

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69710221T Expired - Lifetime DE69710221T2 (de) 1996-12-18 1997-12-16 Drahtloses kommunikationssystem und verfahren mit mehreren wählbaren antennen

Country Status (7)

Country Link
US (3) US6289209B1 (de)
EP (1) EP0950288B1 (de)
JP (1) JP3437971B2 (de)
AT (1) ATE212770T1 (de)
AU (1) AU5605098A (de)
DE (1) DE69710221T2 (de)
WO (1) WO1998027670A1 (de)

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EP0950288B1 (de) 2002-01-30
JP2001500710A (ja) 2001-01-16
JP3437971B2 (ja) 2003-08-18
EP0950288A1 (de) 1999-10-20
US6466771B2 (en) 2002-10-15
ATE212770T1 (de) 2002-02-15
US6351630B2 (en) 2002-02-26
AU5605098A (en) 1998-07-15
DE69710221D1 (de) 2002-03-14
US20020055345A1 (en) 2002-05-09
US20010016479A1 (en) 2001-08-23
US6289209B1 (en) 2001-09-11
WO1998027670A1 (en) 1998-06-25

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