Erhardt Leimer Gmbh

Erhart + Leimer Gmbh

Jurgen Brau

Jurgen Eisen

Hans Seibold

Martin Zeh

Gunter Franz

The travel of a fabric web is corrected by an image acquisition from a region thereof including a guidance criterium which can be interrupted to produce a single row of image points, the signals of which are digitalized and compared with a reference signal by relative shifting of the stored signals in two shift registers. The number of shifts required to bring about correlation is determined as a measure of the actual position of the web and compared to a setpoint position for operation of an effector restoring the web to its set point position.

Method of and apparatus for controlling lateral deviations of a

A device for reading code lines on a moving carrier in which the lines extend transverse to the direction of movement. The reading head extends across the web and has a row of sensors subdivided into groups. The sensors of each group have a length equal to the maximum length of the coding traces and the total row has a substantially greater length so that the sensors are subdivided along the row into groups. The signals from sensors of preceding groups in a direction of signal flow along the row are summed e.g. at operational amplifiers before being summed with the corresponding sensor outputs of subsequent groups.

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Augsburg, Germany

Jurgen Brau