Accession Number : AD0698523

Title :   WRITING BINARY INFORMATION INTO OPTICAL STORAGES IN INFORMATION SYSTEMS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Brodolin,L. I.

Report Date : 13 AUG 1969

Pagination or Media Count : 18

Abstract : A survey of large-capacity optic memory systems is presented. These systems for storing binary information use the following data carriers: silver halide, Kal'var (a polyethylene teraphthalate layer 75 mu m thick), and thermoplastic and photochromic layers. Maximum resolution for these materials is 1000-2000 lines/mm, and storage duration is for years. Holographic laser systems are also cited. These use either of the above carriers, with writing speeds reaching 100,000 bits/sec., or 3-dimensional data carriers which are being closely studied by researchers, although it is not known whether data may be modified in this type of carrier. A Soviet contribution to the art of storing a large amount of data by optic mean, is the so-called raster photoscopic store, for which two patents were issued in 1961. The system uses a photographic plate and a lens raster to record an image (e.g., a punched card) on a section of film directly behind each lens of the lens raster.

Descriptors :   (*DATA STORAGE SYSTEMS, OPTICAL EQUIPMENT), PHOTOGRAPHY, INPUT OUTPUT DEVICES, REVIEWS, USSR

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE