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:
Jul. 12, 2016
Filed:
May. 16, 2011
Applicants:
James Johnson, Savage, MN (US);
Richard Nelson, Chanhassen, MN (US);
Inventors:
James Johnson, Savage, MN (US);
Richard Nelson, Chanhassen, MN (US);
Assignee:
Rosemount Inc., Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/08 (2006.01); G06F 3/147 (2006.01);
U.S. Cl.
CPC ...
H03F 3/08 (2013.01); G06F 3/147 (2013.01); G09G 2330/021 (2013.01); G09G 2360/144 (2013.01); Y10T 307/773 (2015.04);
Abstract
A field device comprises a transducer, a photodetector, a display, and a display controller. The transducer controls or monitors process variable, and the display shows information relating to the process variable. The photodetector detects a light level. The display controller is capable of switching the display on and off in response to changes in the light level detected by the photodetector.