Development of an Optical Disc Recorder

Abstract

Twenty tellurium air sandwiches were assembled in a new dedicated clean room. Preliminary tests of the sandwiches indicate acceptable characteristics for digital recording. The recorder prototype is now operational. The Philips Research Laboratories (PRL) recorder has been used for routine materials evaluation. No degradation of tellurium films has been observed after 3,000 hours at 90 C. The backup turntable and sled assembled from commercially available components were tested and found acceptable for digital recording applications. The tasks of data modulation and error encoding/decoding are proceeding well.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1977
Accession Number
ADA040659

Entities

People

  • A. Milch
  • Ding Lou
  • F. Zernike
  • George Kenney
  • M. Giebler

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Bearings
  • Coders
  • Coding
  • Damping
  • Decoding
  • Detectors
  • Digital Information
  • Electric Motors
  • Frequency
  • Frequency Response
  • Materials
  • Prototypes
  • Quality Control
  • Tellurium
  • Test And Evaluation
  • Transducers
  • Transfer Functions

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Materials Science and Engineering.