NAVIGATION SYSTEM FOR DISABLED PERSONS, IN PARTICULAR VISUALLY IMPAIRED PERSONS
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United States of America Patent
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N/A
Issued Date -
May 21, 2009
app pub date -
Oct 26, 2005
filing date -
Oct 26, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A navigation system for disabled persons, in particular visually impaired persons. The navigation system comprises a plurality of transponders (10, 10′, 10″, 100) with RFID tags (14), said transponders (10, 10′, 10″; 100) being installed at known locations and each of said RFID tags (14) having a unique identifier. The navigation system further comprises a database (66) comprising a mapping of the unique identifiers to the known locations. This system also comprises a portable device (50) having a transceiver (40) for communication with at least one proximate transponder (10, 10′, 10″; 100), a storage means (54) for storing content of the database, a processing means (52) for determining information in accordance with the database (66) and the unique identifier of the proximate transponder (10, 10′, 10″; 100) and an interface (56) for providing the information to the disabled persons. The transponders (10, 10′, 10″; 100) are embedded in footpaths (30, 70) and/or border surfaces of footpaths. Also described is a method for providing a navigation system infrastructure and a transponder (10, 10′, 10″; 100) for use in a navigation system.
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Family
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Cited Art Landscape
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