| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable the button operation of portable telephony equipment surely even for a person having difficulty in sight. SOLUTION: On the surface of transparent fore band 12 of carrying case corresponding to braille, a braille sheet is formed corresponding to all the buttons of portable telephony equipment or any buttons with the high frequency of use. For example, the braille corresponding to a power source button 'P' and a function button 'F' is formed on a braille sheet 19 on the top stage, the braille corresponding to a call originate button 'O' is formed on a braille sheet 20 on the 2nd stage, the braille corresponding to a speak end button 'square' is formed on a braille sheet 21, and the braille corresponding to numerals from '0' to '9' is formed after the 3rd stage.</p> |
