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Electronic timepiece with calendar month-end non-correction device
Electronic timepiece with calendar month-end non-correction device
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机译:带有日历月末非校正装置的电子表
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摘要
An electronic timepiece is provided with a device for automatically adjusting month-end calendar dates capable of reading dates simply, quickly, and reliably.;A date detection pattern 71 composed of reflective and non-reflective sections is formed on the rear surface of a date dial 70. When the date dial 70 rotates, a change in the boundary between the reflective part and the non-reflective part is read by a photo sensor 81, the necessary number of dates is determined by a control circuit 20 by use of a perpetual calendar circuit, driving a date dial driving mechanisms 51 and 52. 展开▼