Optical memory card

Details Optical memory card Optical memory card

1987-04-24

1989-05-09

Pitts, Harold I.

Registers

Records

Perforated

235487, G06K 2100

Patent

active

048291684

ABSTRACT:
An optical memory card subjected to optical information recording and reproduction, comprising, a card-like card body, an optical recording portion provided on said card body, and a light-transmitting portion formed in said card body for detecting an insertion state of said optical memory card in a card reader and/or writer.

REFERENCES:
patent: 3162468 (1964-12-01), Jonker
patent: 3493730 (1970-02-01), Cilino
patent: 3562497 (1971-02-01), Gastal
patent: 4598393 (1986-07-01), Pierce
patent: 4625100 (1986-11-01), Smith
patent: 4629873 (1986-12-01), Stockburger

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