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. 01, 2000
Filed:
Aug. 20, 1996
Yuji Yamada, Tokyo, JP;
Kiyofumi Inanaga, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A headphone device having the function of detecting the head turning angle, in which attempts to realize sound image localization in the forward direction and that in the rear direction simultaneously does not result in the impulse response processing becoming voluminous. If a headphone 7 experiences a rotary movement, a rotational angular velocity sensor 8, mounted on a headband 7a, outputs a voltage proportionate to the angular velocity. The output voltage is filtered by a bandwidth limiting filter 9 and encoded by an A/D converter 10 to enter a micro-processor 11. The output signal of the A/D converter 10, entering the micro-processor 11, is sampled at a pre-set time interval and integrated so as to be converted into angular data. A rotational angle for actually localizing the sound image is calculated from the angular data and corresponding signal processing data is transmitted to a digital signal processing circuit 4.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile