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:
Mar. 24, 2015
Filed:
Jul. 22, 2010
Applicants:
Ian Edmund Munro, West Wickham, GB;
Kendall Castor-perry, London, GB;
Tarik Zukic, Vienna, AT;
Inventors:
Assignee:
Sensorcom Limited, Beckenham, GB;
Primary Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01); H04B 1/034 (2006.01);
U.S. Cl.
CPC ...
H04B 1/0343 (2013.01); H04R 25/554 (2013.01); H04R 2225/51 (2013.01); H04R 2225/55 (2013.01); H04R 2460/03 (2013.01);
Abstract
A communication system comprises a transmitter unit () arranged to be carried by or located near a user, and an earpiece including a receiver unit (), the system operating with a carrier frequency of less than 100 kHz, preferably less than 30 kHz, most preferably in the range 14 to 20 kHz. The system employs vestigial sideband modulation by cutting off part of an upper sideband. The received signal is digitized and then sampled to an envelope-tracking sampled-data root-filter square detector () configured as a digital signal processor.