Process and device to transmit data between a read/write device

Details Process and device to transmit data between a read/write device Process and device to transmit data between a read/write device

1998-10-13

2000-03-28

Hoff, Marc S.

Data processing: measuring, calibrating, or testing

Calibration or correction system

Signal frequency or phase correction

342100, 342174, 331 41, 331 44, G08B 2900

Patent

active

060443332

ABSTRACT:
The invention relates to a device and process for data transmission. The data is transmitted by changes in the field strength of an electromagnetic or magnetic field, and then the times between at least two sequential field strength changes are evaluated. A frequency serving as the time base for evaluating the times between the field strength changes is calibrated at least at the beginning of data transmission so that it has a set relationship to the cycle duration of the field strength changes.

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patent: 5889491 (1999-03-01), Minter

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