| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform a guide display from which a key to be depressed is intuitively easy to predict, and which is also interesting to look at. <P>SOLUTION: A two-dimensional display means is provided near a keyboard consisting of a plurality of keys, and a key to operate is displayed to the operation timing on the two-dimensional display means. In this case, after leaving a position near the key to be currently depressed once with time, displaying is performed to draw a given two-dimensional trajectory approaching to a position near a key to be depressed next. Thus, a human player can readily intuitively predict the key to be next depressed and depression timing of the next key, in accordance with the display drawing a so-called bouncing ball that appears as if a ball were bouncing. Further, with a performance guide by the non-conventional bouncing-ball-like two-dimensional trajectory display, the human player can enjoy continuing to play the keyboard, without getting bored, as if the player were following the bouncing ball. <P>COPYRIGHT: (C)2007,JPO&INPIT |
