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:
Jan. 20, 2015
Filed:
Oct. 18, 2010
Ehsan Azarnasab, Salt Lake City, UT (US);
Erik Alfonso Nilsen, McKinney, TX (US);
Ehsan Azarnasab, Salt Lake City, UT (US);
Erik Alfonso Nilsen, McKinney, TX (US);
Blackrock Microsystems, LLC, Salt Lake City, UT (US);
Abstract
In an embodiment, an electrical-line-noise canceller includes a phase detector, a phase lock loop, a zero-crossing detector, and an adaptive filter. The phase detector is configured to receive a composite input signal including an input neural signal combined with electrical line noise and to detect a phase of the electrical line noise. The phase lock loop is coupled to the phase detector and is configured to lock to the phase of the electrical line noise. The zero-crossing detector is coupled to the phase lock loop and is configured to detect zero crossings of an output of the phase lock loop. The adaptive filter is coupled to the zero-crossing detector and is configured to remove the electrical line noise from the composite input signal and output a filtered neural signal that is substantially similar to the input neural signal.