| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve the operability of a terminal device by using key backlights of the terminal device to assist inputting of keys. <P>SOLUTION: The terminal device includes: a plurality of input keys for detecting depression; a plurality of key backlights that issue a plurality of luminous colors per key and illuminates the input keys; a backlight control section that independently controls the colors issued by the key backlights for each of the key backlights; and a means that, when the input key detects the depression of key, illuminates the key backlight in a first color, and, when the status of the depression of the key gets into a prescribed condition, changes the luminous color issued by the key backlight corresponding to the input key that accepts the depression of the key, from the first color to a second color. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
