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:
Apr. 13, 2021
Filed:
Aug. 14, 2019
Openpath Security Inc., Culver City, CA (US);
Michael Biggs, Culver City, CA (US);
Samy Kamkar, Los Angeles, CA (US);
Alexander A. Kazerani, Santa Monica, CA (US);
OPENPATH SECURITY INC., Culver City, CA (US);
Abstract
A device may include a wire interface (e.g., port), a detection circuit and a microcontroller. The detection circuit may include a resistor, a comparator, and wiring connecting the resistor to the wire interface and to a first input of the comparator. The microcontroller may provide a test signal to the resistor, and a threshold signal to a second input of the comparator. The test signal passes through the resistor and continues to the wire connector and the comparator first input with little to no change or attenuation when the wire interface is disconnected, but is attenuated when the wire interface is connected to a wire with capacitance charging and discharging based on the test signal. The comparator may compare the voltage of a resulting signal at the wire interface to the threshold signal voltage, and depending on the comparison may detect if a wire is connected to the wire interface.