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:
Oct. 16, 1984
Filed:
Jul. 13, 1982
Applicant:
Inventors:
Soitiro Tosima, Machida, JP;
Masayoshi Nishikawa, Machida, JP;
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; H04R / ;
U.S. Cl.
CPC ...
369132 ; 369173 ; 3103 / ; 310334 ;
Abstract
A surface acoustic wave recording device is constructed for use in recording video signals in the surface of a master substrate. The device includes a pyramidal-shaped tip having a plurality of transducer electrodes for launching surface acoustic waves on the surfaces of the device structure. Surface acoustic waves launched from the plurality of transducers are focused at the apex of the record device. A stylus, for example, of diamond, affixed to the apex of the pyramidal structure vibrates in consonance with the signal to be recorded to cut the video signals into the surface of the master substrate.