| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To eliminate inconvenience of using cookware 6 taking account of its setting position. <P>SOLUTION: A plurality of infrared LEDs 39 are mounted on the cookware 6, and a plurality of the infrared LEDs 39 forms an infrared transmission region of 360°connecting in an annular form in a set state of the cookware 6. With such constitution, an infrared receiving circuit 48 falls within the infrared transmission region at whatever angle the cookware 6 is set, and it becomes unnecessary to care about a set angle of the cookware 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
