Method and device for coding and/or decoding and securing data

Details Method and device for coding and/or decoding and securing data Method and device for coding and/or decoding and securing data

1980-08-20

1982-07-13

Atkinson, Charles E.

Excavating

235382, 235437, G06F 1110

Patent

active

043398200

ABSTRACT:
A method of securing data on a data support and means for performing the method are provided. In the method, the data of successive data units forming a coded text are rearranged and recorded on the data support in coded form. Coding is performed in accordance with a variable code. The variable code is determined by a given number contained in the text and individually characterizing the data support. Decoding of data recorded in accordance with the method is governed by an instruction number controlling the coding and/or decoding device.

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patent: 3845470 (1974-10-01), Schuller
patent: 3846622 (1974-11-01), Meyer
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patent: 3892948 (1975-07-01), Constable
patent: 3990558 (1976-11-01), Ehrat
patent: 4198619 (1980-04-01), Atalla
patent: 4245308 (1981-01-01), Hirschman et al.
patent: 4268715 (1981-05-01), Atalla

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