Address mark generation and decoding method

Details Address mark generation and decoding method Address mark generation and decoding method

1979-07-26

1981-06-02

Malzahn, David H.

Excavating

364900, G06F 1110, G06F 1300

Patent

active

042715199

ABSTRACT:
This application discloses a method for generating and detecting address marks in data fields which are not provided with readily useful clock pulse means. The method comprises inverting portions of a digital word during writing of an address mark and reinverting words during reading of a record, whereby only inverted, i.e. address mark portions, of said word provide an indication of error-free reading during a read operation provided with error detection means.

REFERENCES:
patent: 3956736 (1976-05-01), Jacques et al.
patent: 4034350 (1977-07-01), Kashio
patent: 4053944 (1977-10-01), Dixon

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