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Information processing system including processing device for detecting non-conductivity of state-indicating non-conductive member and discriminating prohibit state of writing information to information writable storage medium

  • US 6,094,697 A
  • Filed: 08/28/1998
  • Issued: 07/25/2000
  • Est. Priority Date: 02/03/1995
  • Status: Expired due to Term
First Claim
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1. An information processing apparatus comprising:

  • an information storage card device including a supporting card, information writable storage medium means on the supporting card and a state-indicating conductive member on a surface of said supporting card, the state-indicating conductive member indicating a state of the storage medium means in which writing of information to the storage medium means is prohibited; and

    a processing device for receiving said information storage card device, the processing device having discriminating means for detecting the conductivity of said state-indicating conductive member to discriminate the prohibit state of writing information to the storage medium means.

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