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:
Aug. 27, 2002
Filed:
Dec. 06, 1999
Yoshinobu Yasuno, Tokyo, JP;
Yasuhiro Riko, Midori-ku, Yokohama-shi, Kanagawa-ken 226-0021, JP;
Other;
Abstract
An acoustic pulse in size corresponding to the digit position of a digital signal pulse is generated by means of condenser speakers , that are grouped electro acoustic transducer elements corresponding to each bit that forms a digital signal employed in a communication channel. Then, an electro acoustic D/A converter for synthesizing the pulse in a cavity is composed. Further, this electro acoustic D/A converter is to be as a component, and an electro acoustic A/D converter is composed by additionally providing electric accessories as in the A/D converter comprising a general electric circuit. In this manner, a transmitter/receiver having a function for converting between an acoustic analog signal and a digital electric signal is composed.