Patent ID: 7199725
Filing Date: 2007-04-03
Classification: G09B

Abstract:
1. A method for radio frequency identification aiding the visually impaired, the method comprising: storing a recording of a sound representing at least one attribute of an object having associated with the object a radio frequency identification (“RFID”) tag, wherein the recording includes timing information for synchronous playback; wherein the timing information comprises a playback rate; activating the RFID tag with an electronic travel aid (“ETA”) for the visually impaired including receiving information from the RFID tag; retrieving the recording from storage; and playing the recording synchronously through an audio interface of the ETA including: measuring elapsed playback time; selecting a start time in advance of a current elapsed playback time; identifying, in dependence upon the selected start time and the playback rate, a start point in the recording that corresponds to the selected start time; and when the elapsed playback time matches the selected start time, beginning playback of the recording from the start point.