Accession Number : ADD002795

Title :   Read-Only Optical Memory System.

Descriptive Note : Patent,


Personal Author(s) : Williams,Donald N

Report Date : 20 Apr 1976

Pagination or Media Count : 6

Abstract : The patent relates to an improved read-only optical memory system comprising a mask having a plurality of discrete increments of recorded information defined by variations in opacity and a suitable light source positioned to illuminate the mask so that the mask transmits recorded information in the form of light energy in accordance with the opacity of the illuminated discrete increments. A multiple element photo responsive charge coupled device is positioned to receive the light energy transmitted by the illuminated mask and has its elements arrayed for developing a charge at each element position commensurate with the photo energy transmitted by an optically aligned discrete increment of the mask. Accordingly, the charges of the multiple elements are representative of the recorded information defined by variations in opacity of the mask and means for transferring the charges out of the charge coupled device is provided.

Descriptors :   *Optical storage, *Read only memories, *Patents, Charged coupled devices, Electrooptics, Masks

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE