公开(公告)号：US20060138233A1

公开(公告)日：2006-06-29

申请号：US11024035

申请日：2004-12-29

申请人： Antti Kemppainen ,  Esko Strommer ,  Heikki Huomo ,  Raimo Korhonen

发明人： Antti Kemppainen ,  Esko Strommer ,  Heikki Huomo ,  Raimo Korhonen

IPC分类号： G06K7/08

CPC分类号： G06K19/067 ,  G06K7/081

摘要： A method for reading a code, which code comprises code elements and the first part of the code elements is substantially conductive and the conductivity of the second part is substantially different from that of the first part, in which method the reader couples to the code in a capacitive manner, in which case the signal level of the signal formed by the reader varies according to the conductivity of the code element, and a correction factor is determined of at least one code element for correcting the signal. In addition, the invention relates to a code reader and electric ink.

公开(公告)号：US20060131411A1

公开(公告)日：2006-06-22

申请号：US11015647

申请日：2004-12-20

申请人： Heikki Huomo ,  Esko Strommer

发明人： Heikki Huomo ,  Esko Strommer

IPC分类号： G06K7/08 ,  G06K7/10

CPC分类号： G06K7/089 ,  G06K7/081

摘要： 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.

摘要翻译： 用于读取至少部分导电代码的代码读取器的传感器头，所述传感器头包括读取电极，其尖端布置成以电容方式耦合到代码以及测量电子器件。 测量电子设备被布置成将信号输入到所述读取电极，并且测量来自读取电极的所述信号的响应，以便确定读取电极及其周围环境之间的阻抗的变化。 此外，本发明涉及相应的方法，代码阅读器，电子设备和移动设备。