Electronic clock with a device for setting calendar data at the end of the month

摘要

An electronic watch having an apparatus for automatically setting month-end calendar data, comprising: - a date dial provided with a detection pattern composed of a reflective part and a non-reflective part, both of which correspond to a date display; A date disk drive signal generating means for generating a datum disk drive signal every 24 hours; A photosensor mechanism having a light emitting part and a photo detecting part for reading the detection pattern at a time when the date dial moves; A control circuit for outputting an additional date dial drive signal required to display data of which nonexistent data is excluded at the end of the month, based on a signal from the photosensor mechanism and the information of a permanent calendar circuit when the date dial drive signal is received from the date disk driving signal generating means, and a date dial driving mechanism for driving the date dial corresponding to the date dial driving signal and the additional date dial driving signal ...