Accession Number : ADD004071

Title :   MOS Shift Register Compensation System for Defective Tracks of Drum Storage System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Page,Robert E

Report Date : 05 Apr 1975

Pagination or Media Count : 4

Abstract : Loss of a magnetic track on a rotating drum memory is compensated for by a serially connected shift register. Since replacement of an entire magnetic drum is a costly venture, it usually is not warranted when only one or two or several tracks have become corroded or otherwise scored. The shift register is provided with an appropriate amount of stages to handle the data otherwise stored on a damaged magnetic drum track. Provision is made in the inventive concept herein disclosed for providing index and clock signals in event of the failure of the index and clocking tracks in the memory drum. (Author)

Descriptors :   *Patents, *Shift registers, *Magnetic drums, *Data storage systems, Metal oxide semiconductors, Compensation, Tracks, Defects(Materials)

Subject Categories : Electrical and Electronic Equipment
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE