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:
Dec. 18, 2007
Filed:
Oct. 04, 2002
Dietmar Döttling, Leinfelden-Echterdingen, DE;
Oliver Fuchs, Esslingen, DE;
Mathias Sälzer, Reichenbach, DE;
Martin Wendler, Stuttgart, DE;
Christoph Weishaar, Weinstadt, DE;
Dietmar Döttling, Leinfelden-Echterdingen, DE;
Oliver Fuchs, Esslingen, DE;
Mathias Sälzer, Reichenbach, DE;
Martin Wendler, Stuttgart, DE;
Christoph Weishaar, Weinstadt, DE;
Pilz GmbH & Co., Ostfildern, DE;
Abstract
The present invention discloses a protective device for safeguarding a hazardous area and a method for checking the functional reliability of such a device. The protective device has an image recording unit with an image sensor which includes a large number of light-sensitive pixels. During operation, the image recording unit records an object image. The image sensor is also supplied with a defined test image in order to check the functional reliability, wherein the test image recorded by the image sensor is compared with a defined expectation. According to one aspect of the invention, the object image is specifically made dynamic by means of a testing device and the modified object image is used as the test image.