发明名称 ELECTRONIC WATCH WITH AUTO-CALENDAR
摘要 PROBLEM TO BE SOLVED: To provide an electronic watch which is usable at the same time when the operation of analog hands is started, without offsetting calendar data even when the operation of the analog hands is being stopped with a crown pulled out. SOLUTION: When analog hands 112 are driven, a present hand position is detected by a hand position detection circuit 113 and, when the hand position is any position, normally at 24:00, a CPU 105 computes present calendar data to be fed one day and stores the computation result in a calendar counter 110. The CPU 105 outputs a drive command signal covering a renewed calendar data position to a date indicator drive pulse generation circuit 114. A date indicator 115 is moved to a renewed day position by a date indicator drive pulse from the date indicator drive pulse generation circuit 114. At this time, the time counter 109 is cleared to 0:00 and positioned in synchronization with the analog hands 112.
申请公布号 JPH11231071(A) 申请公布日期 1999.08.27
申请号 JP19980030118 申请日期 1998.02.12
申请人 SEIKO INSTRUMENTS INC 发明人 NOSAKA NAOKATSU
分类号 G04C3/00;G04C9/00;G04C17/00;G04G99/00 主分类号 G04C3/00
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