发明名称 Timepiece testing apparatus
摘要 An apparatus for testing the accuracy of a timepiece comprising a television camera for converting the time displayed into an electrical signal, a means for converting the electrical signal into a digital signal, and a processing means for storing the digital signal and comparing the digital signal to a signal corresponding to a time standard. In operation, the time displayed on the timepiece is compared to the time standard at two different times and the difference between the time standard and the time displayed of the two measurements is compared.
申请公布号 US4030338(A) 申请公布日期 1977.06.21
申请号 US19760694574 申请日期 1976.06.10
申请人 CITIZEN WATCH CO., LTD. 发明人 EBIHARA, HEIHACHIRO
分类号 G04D7/00;G04D7/12;(IPC1-7):G04B17/00 主分类号 G04D7/00
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