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:
Jan. 25, 2000
Filed:
Jan. 13, 1997
Applicant:
Inventor:
Achim Degenhardt, Germering, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455561 ; 455462 ;
Abstract
A telephone system includes a mobile telephone set having a signal processing unit which is coupled through an amplifier unit to a microphone and at least one speaker. The telephone system also includes a stationary base station for communicating with the mobile telephone set. The signal processing unit has a digital signal processor with an associated memory. A hands-free function is accomplished through the use of the additional signal processor. An echo suppressor or echo compensation function realized by the digital signal processor can be reduced or turned off.