Optical card having an identifier for identifying track construc

Details Optical card having an identifier for identifying track construc Optical card having an identifier for identifying track construc

1988-02-04

1992-05-12

Weinhardt, Robert

Registers

Coded record sensors

Particular sensor structure

235494, 3692753, 369 58, 369 47, G06K 710, G11B 7013

Patent

active

051130610

ABSTRACT:
An optical card for storing a large amount of data in an optically readable manner, including a plurality of tracks formed in a data record layer in parallel with each other, each track being divided into a data record area and an address record area, and identifiers each recorded in address record areas of respective tracks. By optionally reading the identifier from the optical card, it is possible to recognize automatically the track construction denoting the number of sectors per track and the number of bytes per sector.

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patent: 4862295 (1989-08-01), Tanaka et al.
patent: 4910725 (1990-03-01), Drexler et al.

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