发明名称 |
Time measuring system and related distance measuring system |
摘要 |
A coarse measuring circuit measures an approximate measurement object time DU based on a first reference clock CK10. The approximate measurement object time represents a duration from a measurement start time to an input time of measurement object pulse PBr. A fine measuring circuit, cooperating with the coarse measuring circuit and using a shorter reference time, measures a time difference between a change point of the first reference clock CK10 and the input time of measurement object pulse PBr as a correction time DD of the approximate measurement object time DU, thereby obtaining a precise measurement objet time DT.
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申请公布号 |
US6587187(B2) |
申请公布日期 |
2003.07.01 |
申请号 |
US20020043249 |
申请日期 |
2002.01.14 |
申请人 |
DENSO CORPORATION |
发明人 |
WATANABE TAKAMOTO;SHIRAI NORIAKI;MATSUI TAKESHI |
分类号 |
G04F10/04;B60R21/00;G01S7/493;G01S13/28;G01S13/32;G01S17/10;G01S17/32;G01S17/93;(IPC1-7):G01C3/08;G01S13/08 |
主分类号 |
G04F10/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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