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:
Mar. 29, 1977
Filed:
Mar. 17, 1976
Dietlind Pekau, Taufkirchen, DT;
Eckhard Storck, Munich, DT;
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Abstract
A process for recording low-frequency, wide-band signals on a thermoplastic storage medium to obtain an improved signal-to-noise ratio characterized by exposing the thermoplastic storage medium with the information to be recorded and either simultaneously or in a sequential relation imposing a lattice signal onto the storage medium. In one embodiment of the process, the lattice signal is obtained by utilizing an optical grating which modulates light passing therethrough with the lattice signal. If the lattice signal is to be imposed simultaneously with the exposing of the information, the light containing the information is passed through the optical grating to have the lattice signal imposed thereon. In another embodiment, the lattice signal is imposed on the storage medium electronically by utilizing spaced electrode pairs which are energized either simultaneously with the exposing of the thermoplastic or in a sequential relation therewith.