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:
Aug. 04, 1998
Filed:
Jun. 06, 1996
Applicant:
Inventors:
Larry Edward Hawker, Nepean, CA;
Andre John Van Schyndel, Kanata, CA;
Christopher Michael Forrester, Ottawa, CA;
Assignee:
Northern Telecom Limited, Montreal, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ; H04M / ; H04M / ;
U.S. Cl.
CPC ...
381163 ; 381188 ; 379420 ; 379428 ; 379433 ;
Abstract
A wireless terminal for personal communication systems is provided with selective handsfree or handset receive mode of operation utilizing a single transducer. The transducer is mounted within a specially designed enclosure having front and back chambers each with strategically located acoustic ports for shaping the frequency response and providing good quality audio in each mode. Electronic equalization may be employed to further adjust the amplifier gain and shape the frequency response for dual mode operation.