Dr. Johannes Heidenhain Gmbh

Daniel Schenzinger

Stephan Kreuzer

Michael Walter

Bernhard Beaury

Markus Mooshammer

Thomas Fleischmann

A method for reading a serial data stream in a piece of automation technology equipment includes encoding the data stream to include at least two symbols which are distinguishable by a time interval between two successive signal edges. The data stream is delivered to a read unit including a symbol recognition unit which associates a time sequence of the signal edges with a respective one of the symbols taking into account a period of time including a current symbol duration of one of the symbols to be currently associated and at least one old symbol duration of a preceding one of the symbols.

Method and device for reading a serial data stream

A method for serial data transmission between a position-measuring device and subsequent electronics over a bidirectional data channel includes transmitting data in data frames and in encoded form in accordance with a data transmission code. The data transmission in each case is initiated by an interface unit at a transmitter end with a start sequence having an encoding scheme that at least partially differs from an encoding scheme of a remainder of the data frames. After a reversal of data direction, an interface unit at a receiver end detects a beginning of the data transmission in each case by detection of the start sequence.

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Munich, Georgia

Daniel Schenzinger