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:
Dec. 28, 2010
Filed:
Dec. 13, 2007
Lawrence J. Karr, Santa Monica, CA (US);
Joseph H. Schulman, Santa Clarita, CA (US);
Howard H. Stover, Pasadena, CA (US);
Lawrence J. Karr, Santa Monica, CA (US);
Joseph H. Schulman, Santa Clarita, CA (US);
Howard H. Stover, Pasadena, CA (US);
Alfred E. Mann Foundation For Scientific Research, Santa Clarita, CA (US);
Abstract
Communication techniques are described that can improve signal reception from an implanted wireless device to a main control unit (MCU) while in the presence of a narrowband interferer. The implanted wireless device can be any appropriate device such as a microtransponder, microstimulator, a sensor device or a drug delivery device. The MCU captures samples of signals emanating from the wireless device during an expected transmission time interval. The captured samples are evaluated and transformed into a series of spectral terms that are then evaluated to identify narrowband interference signals. The identified narrowband interference terms can be initialized to a null value to remove the signal spectrum resulting from the communication, and an inverse transformation can be used to generate a time domain signal that is free from interference. Overlapping windows and other signal processing techniques can also be applied to improve overall communications.