×

Information medium for communicating data and/or a selectable control transfer program between the medium end and external device

  • US 4,792,996 A
  • Filed: 09/19/1986
  • Issued: 12/20/1988
  • Est. Priority Date: 09/27/1985
  • Status: Expired due to Term
First Claim
Patent Images

1. An information system which can correctly communicate with an external device having instruction information, said system comprising:

  • receiving means for receiving the instruction information from the external device;

    transmitting means for transmitting transmission data input thereto, to the external device;

    memory means for storing data, a transfer program, and a control program;

    transfer control means for storing, as data, into said memory means the content in a data field of the instruction information received by said receiving means in a write mode in accordance with the stored transfer program, and for storing, as the transfer program, into said memory means the content in the data field in a program change mode in accordance with the stored control program; and

    discriminating means coupled to said transfer control means and said transmitting means for discriminating an enabling code in an enabling code field of the instruction information received by said receiving means, and for selectively activating said transfer control means and said transmitting means in accordance with a result discriminated by said discriminating means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×