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:
Apr. 24, 2007
Filed:
Jan. 26, 2004
Keiichi Kobata, Machida, JP;
Tetsuya Tsuruoka, Kawasaki, JP;
Keiichi Kobata, Machida, JP;
Tetsuya Tsuruoka, Kawasaki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Herein disclosed is a wireless headphone apparatus, comprising: a plurality of light signal receiving units each for receiving a light signal to produce an electric signal having a signal level; a plurality of light signal limiting units respectively connected with the plurality of light signal receiving units in one to one relationship, each of the light signal limiting units operative to allow only an electric signal having a signal level lower than a predetermined threshold value to pass therethrough and delete an electric signal having a signal level equal to or greater than the predetermined threshold value; a signal synthesizing unit for synthesizing the electric signals passed through the light signal limiting units to produce a synthesized electric signal; and speaker means for outputting a sound in response to the synthesized electric signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile