| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a large amount of information to be efficiently transferred between substrates with low noise. <P>SOLUTION: An electronic circuit device has multiple connectors 19 arranged on a backboard 12 of a rectangular-shaped shelf, multiple electronic circuit boards 21 to 28 detachably supported by the respective connectors, and a bonnet 13 attached at a front opening of the shelf and composing a closed space, wherein a mirror face 18 is prepared at the back of the bonnet, and optical transmission and receiving elements LED and PD are prepared at the bonnet side of each electronic circuit board so that optical communication may be performed using light reflection on the mirror face. <P>COPYRIGHT: (C)2008,JPO&INPIT |
