| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a trend display apparatus for avoiding the concentration of a load on a web server by embodying functions of: plotting a trend graph by giving only latest data from a web screen management means to a real-time trend display means (1); allowing the display period of the trend graph not dependent on the data preservation period of the web server (2); and simplifying the processing structure of the web server (3). <P>SOLUTION: The trend display apparatus includes the web server and a web browser means. The web server receives a display request from the web browser means. Collection data for a prescribed period with the latest collection data added thereto are given to the web browser means and displayed. The apparatus comprises: a buffer means for adding the latest collection data to preceding display data to be returned from the web browser means; and a trend display means for giving the content of the buffer means to the web browser means. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
