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:
Sep. 13, 2011
Filed:
May. 07, 2009
Fred Schleifer, Prior Lake, MN (US);
Christopher Alan Dums, Neenah, WI (US);
Alejandro Ruiz Sanchez, Newark, CA (US);
John Drinkard, Foster City, CA (US);
Fred Schleifer, Prior Lake, MN (US);
Christopher Alan Dums, Neenah, WI (US);
Alejandro Ruiz Sanchez, Newark, CA (US);
John Drinkard, Foster City, CA (US);
Omron Scientic Technologies, Inc., Fremont, CA (US);
Abstract
Zone selection logic in an area monitoring device increases the number of unique monitoring zone selections that can be selected using a limited number of discrete zone selection inputs, without compromising the safety critical operation of zone selection. The device monitors the logical state of each input in a set of individual inputs and recognizes each unique logical combination of zone selection inputs as a different zone selection. For example, each of two or more configured monitoring zones is associated with a different combinatorial zone selection pattern of asserted zone selection input signals. Correspondingly, a control circuit within the area monitoring device is configured to monitor the discrete zone selection inputs and activate a given one of the configured monitoring zones based on recognizing the associated combinatorial zone selection pattern of asserted zone selection signals.