Mos shift register compensation system for defective tracks of d

Details Mos shift register compensation system for defective tracks of d Mos shift register compensation system for defective tracks of d

1976-01-22

1977-04-05

Thomas, James D.

Communications: electrical

Digital comparator systems

360 47, 360 54, 360 63, G06F 1100, G06F 1304, G11B 509

Patent

active

040165477

ABSTRACT:
Loss of a magnetic track on a rotating drum memory is compensated for by a erially 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.

REFERENCES:
patent: 3147462 (1964-09-01), Levinson
patent: 3387281 (1968-06-01), Peters
patent: 3689891 (1972-09-01), Kril

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