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:
Dec. 20, 1983
Filed:
Mar. 04, 1982
Applicant:
Inventor:
Hideyuki Kenjyo, Koganei, JP;
Assignee:
Olympus Optical Co. Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H04R / ; H04R / ;
U.S. Cl.
CPC ...
455614 ; 1791 / ; 179138 ;
Abstract
A digital microphone for directly supplying a digital signal which designates the displacement of a diaphragm is disclosed. A cylindrical reflecting mirror is provided integrally with the diaphragm and reflects a band-shaped light beam to an array of photo electro transducers. A binary code pattern is formed in the surface of the mirror. The light beam is modulated by a variation of relative position of the code pattern and the light beam. The modulated light beam is transduced into the digital signal by the array of photo electro transducers.