| 摘要 |
<p>PROBLEM TO BE SOLVED: To surely prepare a radio wave data table by retriving an index data storage means based on specified retrieval conditions, extracting a pertinent radio wave name and extracting pertinent radio wave data from a data base storing radio wave information based on the extracted radio wave name. SOLUTION: The range of the coordinate data of X-Y in a region ring the reception of radio waves is inputted from a keyboard 2 and an index data extraction circuit 7 retrieves the pertinent radio wave data from an index data storage memory 6 based on the inputted retrieval conditions and extracts a pertinent radio wave data number. The radio wave data number is unitarily managed in a data candidate extraction circuit 8 as the candidate of the desired radio wave data and outputted to a data extraction circuit 4. The data extraction circuit 4 successively extracts the radio wave data pertinent to the radio wave data number from a radio wave data storage memory 1 and outputs them to a storage medium 5. Thus, the radio wave data table is surely prepared.</p> |
