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:
Feb. 18, 2014
Filed:
May. 27, 2010
Ronald Petrus Nicolaas Duisters, Eindhoven, NL;
Sriram Srinivasan, Eindhoven, NL;
Cornelis Pieter Janse, Eindhoven, NL;
Ronald Petrus Nicolaas Duisters, Eindhoven, NL;
Sriram Srinivasan, Eindhoven, NL;
Cornelis Pieter Janse, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
An earphone arrangement comprises a microphone () which generates a microphone signal and a sound transducer () which radiates a first sound component to a user's ear () in response to a drive signal. An acoustic channel () is further provided for channeling external sound so as to provide a second sound component to the user's ear (). An acoustic valve () allows the attenuation of the acoustic channel () to be controlled in response to a valve control signal. A control circuit () generates the valve control signal in response to the microphone signal to provide a variable attenuation resulting in a mixed sound of the first sound component and the second sound component reaching the user's ear (). The combined use of acoustic and e.g. electric signal paths allows improved performance and in particular allows a dynamic trade-off between open and closed earphone design characteristics with respect to external sounds.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile