| 摘要 |
PURPOSE:To prohibit delivery of switch signal when a crown is rotated inadvertently with the crown pushed in by outputting with delay the opening and closing signals as the crown is rotated. CONSTITUTION:When a crown is pulled out and rotated to the right, a switch 3 is opened and closed and the signal is added to D type FF7 through an OR gate 6, and shifted by clock signal CL. The output of D type FF9 at the final stage is differentiated at a gate 10. The signal that is differentiated is output as correction signal, because an inhibiting gate 11 is in the state of continuity with the crown pulled out. If the crown is inadvertently rotated when it is phsed in, the inhibiting gate 11 outputs nothing. Accordingly there occurs no mistaken correction. |
