Accession Number:

AD0874304

Title:

High Density Disc Recording Development Program

Descriptive Note:

Interim technical rept. 27 Oct 1969-17 Apr 1970

Corporate Author:

GENERAL DYNAMICS/ELECTRONICS ROCHESTER NY

Personal Author(s):

Report Date:

1970-06-01

Pagination or Media Count:

81.0

Abstract:

The program objective is to apply the technology which has been employed in the General Dynamics Universal DAta Recorder, UNIDAR, system utilizing magnetic tape to the disc-type magnetic recorders. The recording technology applicable to magnetic tape and discs is similar, however, the techniques of one cannot be directly applied to the other without considerable investigation. The technology is a method of coding binary information into a format which greatly increases the equivalent packing density of data on tape. The program goal is to increase the disc recording track data density above that which is currently achieved with standard systems while maintaining an error rate of approximately one in 10 in. The report compares various encodings, identifies the UNIDAR technology code as being the best approach, and specifies the in-contract disc requirements for high density data recording. Described are three channels of UNIDAR hardware and the versatile disc test bed which have been procured. A novel error detector which has potential error correction is also described.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Computer Hardware
  • Recording and Playback Devices
  • Inorganic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE