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:
Jul. 31, 2012
Filed:
Dec. 29, 2010
James Molyneux, Portland, OR (US);
Aaron B. Weast, Portland, OR (US);
Brandon S. Burroughs, Portland, OR (US);
Scott R. Berggren, Portland, OR (US);
Clayton J. Lindsay, Portland, OR (US);
Jordan M. Rice, Portland, OR (US);
Bert B. Buxton, Issaquah, WA (US);
Edward S. Lowe, Seattle, WA (US);
James Molyneux, Portland, OR (US);
Aaron B. Weast, Portland, OR (US);
Brandon S. Burroughs, Portland, OR (US);
Scott R. Berggren, Portland, OR (US);
Clayton J. Lindsay, Portland, OR (US);
Jordan M. Rice, Portland, OR (US);
Bert B. Buxton, Issaquah, WA (US);
Edward S. Lowe, Seattle, WA (US);
NIKE, Inc., Beaverton, OR (US);
Abstract
Systems, apparatuses, and methods estimate the distance between a player and a ball by transmitting a chirp (sweep signal) to a radio tag located on the ball. During the chirp, the frequency of the transmitted signal is changed in a predetermined fashion. The radio tag doubles the transmitted frequency and returns the processed signal to a transceiver typically located on the player. The currently transmitted frequency is then compared with the received frequency to obtain a difference frequency from which an apparatus may estimate the distance. The apparatus may simultaneously receive the processed signal from the radio tag while transmitting the sweep signal.