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:
Mar. 25, 2003
Filed:
Jul. 27, 2000
Mathew A. Nieberger, Rocklin, CA (US);
Kristie Amanna, Roseville, CA (US);
Terry W. Smith, Rescue, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A display apparatus for selectively and independently controlling the illumination of two visual indicators with a single control line. The apparatus includes two visual indicators connected in parallel with the cathode to anode direction of one indicator being opposite the other indicator, and a logic circuit having two signal inputs and the control line. The control line couples to a first end of the two indicators. An inverter couples between the control line and a second end of the two indicators. A combination of signals applied to the two inputs selectively illuminates one of the two indicators with one signal from the control line.