Sensor head of a code reader
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United States of America Patent
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Issued Date -
Jun 22, 2006
app pub date -
Dec 20, 2004
filing date -
Dec 20, 2004
priority date (Note) -
Abandoned
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Abstract
A sensor head of a code reader for reading an at least partly conductive code, which said sensor head comprises a reading electrode, whose tip is arranged to couple to the code in a capacitive manner, as well as a measuring electronics. The measuring electronics is arranged to input signal to said reading electrode as well as to measure the response of said signal from the reading electrode in order to determine a change in the impedance between the reading electrode and its surroundings. In addition, the invention relates to a corresponding method, code reader, electronic device and mobile device.
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