| 摘要 |
PURPOSE:To attain an electronic timepiece with key code transmission by transmitting the emission of infrared rays or the like through a driver which is operated in accordance with a set key code due to a switch operation. CONSTITUTION:When a switch group 7 is operated, a prescribed key code is written in every determined address of an RAM5 by a control part 4 which performs the process control in accordance with the program of an ROM3. In this state, when the key code is set by the switch group 7, the set key code is flowed out from the RAM5 similarly and is impressed to the driver 10. Then, the driver 10 converts the key code to a pulse train to drive an infrared-ray LED9, and to perform infrared-ray transmission. Ultrasonic transmission is performed similary, and thus, the electronic timepiece with the key code transmission for an electronic key is attained. |
