摘要 |
<P>PROBLEM TO BE SOLVED: To improve convenience upon controlling portable audio equipment through external equipment. <P>SOLUTION: When a key 37 of external equipment 30 allocated to a key 16 of portable audio equipment 10 is depressed, a voltage analog signal indicating the depression of the key 37 is generated by a microcomputer 31 and a voltage converter 33 and inputted to the microcomputer 13 through a headphone terminal 19. A lighting function 13d of the microcomputer 13 determines that the key 37 of the external equipment 30 allocated to the key 16 is depressed based on the analog signal, and turns on a backlight 17 of the liquid crystal display panel 15 and an LED light 18 to illuminate surroundings of the key 16. <P>COPYRIGHT: (C)2011,JPO&INPIT |