| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that it is disadvantageous in a high speed and a cost to transmit information data by wireless between one device processing a large volume of information and the other device not needing a large volume of receiving, when transmitting the information data in interconnection for performing data processing. SOLUTION: A data transmission system is provided with a first transmitting and receiving means at the large volume and high speed in a data transmission route directed to an upstream to one device for processing the large volume of the information, and a second transmitting and receiving means at a small volume and a middle and low speed in the data transmission route directed to a downstream to the other device not needing receiving of the large volume of the information. In the state of maintaining high speed transmission of the information data, the data transmission system is constituted at a low cost. COPYRIGHT: (C)2004,JPO&NCIPI
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