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OPTICAL MEMORY DEVICE FOR WRITING IN AND READING FOR INFORMATION

  • US 3,860,917 A
  • Filed: 05/09/1973
  • Issued: 01/14/1975
  • Est. Priority Date: 05/12/1972
  • Status: Expired due to Term
First Claim
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1. Optical memory device for writing in and reading-out information items consisting of M groups of N binary digits stored in a photosensitive support building up the data plane of said optical memory device, said device comprising:

  • optical display means controlled by the information items pertaining to anyone of said groups for supplying a first pattern of optical data, multiple imaging means projecting onto said data plane M adjacent images of said first pattern arranged for forming a further pattern of M adjacent storage areas, shutter means for selectively limiting to anyone of said storage areas, the writing in of said informating items, photoelectric read-out means arranged in accordance with said first pattern, illuminating means arranged in accordance with said further pattern for selectively illuminating anyone of said storage areas, and optical reflecting means optically conjugating the sensitive face of said photoelectric read-out means with the emissive face of said optical display means.

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