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:
Oct. 13, 2015
Filed:
May. 03, 2012
Brian Eugene Elwell, Tyrone, GA (US);
Brian Eugene Elwell, Tyrone, GA (US);
Cooper Technologies Company, Houston, TX (US);
Abstract
Multiple signals are received from multiple receivers in a motion sensor. Each signal is amplified and undergoes a gain adjustment individually to generate multiple preamplified received ultrasonic signals. A separate demodulator circuit receives a different preamplified received ultrasonic signal and generates a sum of the demodulated signals and a difference between the demodulated signals. A low pass filter corresponding to a demodulator circuit removes the sum of the demodulated signals. The mixer circuit combines the difference between the demodulated signals to generate an integrated circuit. The gain of each preamplifier may be adjusted based on a sensitivity setting, target levels of the preamplifier, and a level of a preamplified ultrasonic signal, resulting in an integrated motion sign that originated from multiple signals to different receivers in the sensor housing.