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:
Feb. 18, 2025
Filed:
Apr. 16, 2021
Curbell Medical Products, Inc., Orchard Park, NY (US);
Daniel J. MacDonald, East Amherst, NY (US);
Curbell Medical Products, Inc., Orchard Park, NY (US);
Abstract
The present disclosure provides a method for determining a presence of a relay in a pillow speaker, including sampling a voltage of a relay drive line to detect a first feedback state; providing a control signal to activate the relay drive line; sampling a voltage of the relay drive line during activation to detect a second feedback state; and comparing the first feedback state and the second feedback state to detect a presence of a relay. In another aspect, a pillow speaker relay circuit includes a relay drive line with a relay terminal configured to connect to a relay such that current flows through the relay when the relay drive line is activated; a control circuit operable to activate the relay drive line, and a feedback detection circuit configured to detect a voltage of the relay drive line; and a controller to perform any of the disclosed methods.