| 摘要 |
PROBLEM TO BE SOLVED: To provide an information transfer device with which the load on information processing can be reduced in a master even when the number of slaves is large. SOLUTION: In this information transferring device, information is transferred between a master (a display means (100) and a control means (101)) and external equipment 1 (121), 2 (122), and 3 (123). This information transferring device is provided with an information preserving and communicating means (a communicating means (104), a preserving means (103), and communication ports 1 (111), 2 (112), and 3 (113)) for receiving information from the external equipment 1 (121), 2 (122), and 3 (123) and outputting the past information preserved in the preserving means (103) and the information received at present, and a comparing means (102) for receiving the present information and the past information, comparing the past information with the present information, generating information indicating the difference between the past information and the present information and transmitting the difference information to the control means 101 of the master.
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