Dynamic information storage or retrieval – Specific detail of information handling portion of system – Mechanical modification or sensing of storage medium
Patent
1982-07-13
1984-10-16
McElheny, Jr., Donald E.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Mechanical modification or sensing of storage medium
369173, 310313R, 310334, G11B 344, H04R 1704
Patent
active
044778929
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.
REFERENCES:
patent: 3842194 (1974-10-01), Clemens
patent: 4035590 (1977-07-01), Halter
patent: 4281407 (1981-07-01), Tosima
patent: 4434481 (1984-02-01), Toda et al.
patent: 4453242 (1984-06-01), Toda
Nishikawa Masayoshi
Tosima Soitiro
Coalter R. G.
McElheny Jr. Donald E.
Rasmussen P. J.
RCA Corporation
Whitacre E. M.
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