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:
Jun. 05, 1979
Filed:
Oct. 14, 1976
Applicant:
Inventors:
Barney D Hunts, Mountain Lakes, NJ (US);
Martin Brennan, Flanders, NJ (US);
Assignee:
The Singer Company, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
3403 / ; 200D / ; 324 / ; 3403 / ;
Abstract
A plurality of capacitive switches, which are actuated by the touch of a user, are coupled to unique pairs of conductors. The conductors are sequentially actuated, or interrogated, and simultaneously coupled to a charge rate detector that compares the capacitance associated with each conductor to a reference capacitor. Storage means coupled to the output of the charge rate detector stores an indication of whether the capacitance associated with each conductor is greater or less than the reference capacitor such that the stored indications constitute a two of N code that identifies an actuated capacitive switch.