发明名称 ELECTRONIC TIMEPIECE WITH CALENDAR MONTH-END NON-CORRECTION DEVICE
摘要 <p>An electronic timepiece provided with a month-end non-correction device for a simple calendar in which date can be read positively in a short time. A date detection pattern (71) consisting of a reflection part and a non-reflection part is formed on the rear surface of a date plate (70), a transition across the boundary is read by a photosensor (81) when the date plate (70) rotates and the number of days required by a control circuit (20) is decided by a permanent calendar circuit to drive a date plate drive mechanism (51, 52).</p>
申请公布号 WO1999034264(P1) 申请公布日期 1999.07.08
申请号 JP1998005903 申请日期 1998.12.25
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