The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1981
Filed:
Jan. 24, 1980
Georg Holzler, Moehrendorf, DE;
Jochem Knoche, Nuremberg, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
An electromechanical control device for displacing and positioning an object such as a marker on a cathode ray tube screen has at least one control column normally biased in a central rest position which is manually displaceable against the bias in directions corresponding to coordinate axes on the screen. Displacement of the column operates a slide potentiometer which supplies an input voltage to a voltage controlled oscillator which produces an output pulse train which controls movement of the object to be displaced. The object to be displaced moves to a final position with a velocity determined by the amount of displacement of the control column. The final position of the object is achieved by incremental step movements of the column, with column movement controlling velocity and direction of movement only, with magnitude being controlled by an operator. A post-connected counter maintains the object in a specified position after release of the displacement column, thereby freeing an operator's hands while still maintaining the object in the desired position.