Teknologian Tutkimuskeskus Vtt

Valtion Teknillinen Tutkimuskeskus

Teknologian Tutkimuskeskus Vtt Oy

Pekka Pursula

Ville Viikari

Ville J Ollikainen

Mervi Hirvonen

Tero Kiuru

Janne Hakli

Otto Korkalo

Paul Kemppi

Christer Bäckström

Henrik Forsten

Ossi Arasalo

A portable electronic navigational aid () e.g. for the blind (), comprising a radio frequency, preferably millimeter wave, radar () with at least one transmitting (TX) channel and a plurality of receiving (RX) channels, at least one orientation sensor () configured to obtain data indicative of the orientation of the radar, and a processing element () configured to adaptively control () the beamforming of the radar based on the data provided by the orientation sensor. A corresponding method is presented. An accessory, such as a replaceable cover, containing a radio frequency radar for attaching to an electronic host device is presented.

Navigational aid with adaptive radar

The invention relates to a method for ranging a radio frequency tag, comprising measuring the modulated backscattering response of the tag at a plurality of frequencies using reader and determining the dispersive properties of the tag from the amplitude of the measured backscattering response. Further, the method comprises determining a position parameter of the tag from the measured modulated backscattering response and the determined dispersive properties of the tag.

Method, system and computer program product for ranging RFID tags

The invention is especially intended for visually impaired persons who are not able to read text printed on products or product containers. With the invented method at least a part of a product description, which corresponds to a bar code read and which is fetched from a product information database, is stored in at least one memory accessible to the terminal. After this, in response to a command ordered by a user of the terminal, the RFID identifier attached to the terminal is read and the product description is presented in speech format so that the information readable in the memory and the RFID identifier is utilized in the presentation. The terminal is preferably a mobile station equipped with a speech synthesizer. A visually impaired person can point with the terminal to one or more products and listen via an audio system of the terminal to the product descriptions related to them. When RFID identifiers are attached to the product, the products need to be pointed to as precisely when reading bar codes. The products are, for example, foodstuff or medicine.

Method and terminal for presenting in speech format product descriptions attachable to products

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Espoo, Finland

Pekka Pursula