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:
Feb. 10, 1987
Filed:
Feb. 17, 1984
Anto Rodi, Leimen, DE;
Udo Blasius, Leimen, DE;
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
A circuit arrangement for a light barrier for detecting absence or presence of an opaque object at a given location, includes an apparatus for transmitting a signal in response to the disposition of the object, an apparatus for receiving the signal, an apparatus for evaluating the received signal, and an apparatus for initiating a follow-up operation in response to the evaluation of the received signal. The transmitting and receiving apparatus is formed as a reflex light barrier, a digital filter is connected between the transmitting and receiving apparatus and the evaluating apparatus includes two parallel-connected bistable flip-flop circuits, wherein one of the flip-flop circuits has an inverted clock input.