A portable radio terminal according to an aspect of the present invention includes a display section, a determination section, and a control section. The display section includes a display screen. The determination section determines whether data to be displayed on the display screen is text data or not. The control section sets the lightness of the display screen according to each of text data and data other than the text data, to be displayed on the display screen. A portable radio terminal according to another aspect of the present invention includes a display section that has a display screen, and a control section. The control section sets the lightness of the display screen according to each function of the portable radio terminal.

 
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> Portable telephone set for detecting radio wave interference on switched perch channels and displaying interference warning

> Apparatus and method for robust classification of audio signals, and method for establishing and operating an audio-signal database, as well as computer program
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