| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve secret protection in performing data transfer between information processors by using a communication line. SOLUTION: A recording medium on which the same random number sequence is recorded is mounted on a data transmitter 10 and on a data receiver 20. The data transmitter 10 sequentially operates and encodes data sent from a print data inputting means 12 and from a recording medium reading and writing means 13 to send the encoded data to the data receiver 20 through a data storing and transmitting means 15, and sequentially and respectively instructs the reading and writing means 13 to erase the contents of the recording medium and the storing and transmitting means 15 to erase the encoded data that are stored. The data receiver 20 sequentially decodes data of a data inputting means 21 based on random number data from a recording medium reading and writing means 23 to send the decoded data to a data storing means 25, decodes all of received encoded data to print the received encoded data by a printing means 26, and sequentially instructs the reading and writing means 25 to erase the contents of the recording medium and stored print data respectively.</p> |
