Accession Number:

ADA048464

Title:

Wideband Holographic Digital Recording and Reproduction

Descriptive Note:

Executive summary Jan 1973-Nov 1976

Corporate Author:

HARRIS CORP MELBOURNE FL GOVERNMENT ELECTRONIC SYSTEMS DIV

Report Date:

1977-04-01

Pagination or Media Count:

33.0

Abstract:

Techniques were investigated to apply the concept of holography to the problems of wideband digital recording and reproduction. The feasibility of recording at rates up to 2 Gbs and playback at both full-record and reduced speeds was theoretically and experimentally considered. The program was a multi- phased effort including the design, development and experimental evaluation of two Exploratory Development Models EDMs the Phase I EDM demonstrated recording at 400 Mbs and playback at 40 Mbs, and was used to guide design trade-offs for Phase II the Phase II EDM demonstrated recording at 600 Mbs playback at full-record and 0 to 1 time expanded rates with bit-error-rates better than .000001. Both full-system operational testing and parametric evaluation on component basis were performed. This report describes design and performance data at both the system and the subsystem levels for the Phase II hardware. Also a part of this program was the development of conceptual designs for potential multi-gigabit recorders. These designs are presented, along with system and subsystem level trade-offs between the various concepts, and recommendations for subsequent development. Overall, this program has made available a new, high-speed, high-capacity information storage approach offering significant advantages over more conventional recording techniques.

Subject Categories:

  • Lasers and Masers
  • Holography
  • Recording and Playback Devices
  • Military Intelligence

Distribution Statement:

APPROVED FOR PUBLIC RELEASE