Time-to-digital converter using time residue feedback and related method |
|||||||
申请号 | US15643465 | 申请日 | 2017-07-06 | 公开(公告)号 | US09904253B1 | 公开(公告)日 | 2018-02-27 |
申请人 | Terng-Yin Hsu; Chi-Hsu Chen; Jung-Chin Lai; Hsiang-Ming Yen; | 发明人 | Terng-Yin Hsu; Chi-Hsu Chen; Jung-Chin Lai; Hsiang-Ming Yen; | ||||
摘要 | A method and apparatus for measuring an elapsed time from a starting signal to an ending signal in a time-to-digital converter. Primarily, the invention calculates an amount of complete cycles from the starting signal to a starting edge of a next clock cycle or the next Nth clock cycle (N is a natural number great than one) after the clock cycle corresponding to the ending signal. The amount is multiplied by a cycle time of the coarse clock to obtain a coarse time value. A time residue is calculated from the ending signal to the starting edge. Finally, the time residue is subtracted from the coarse time value to obtain a required time. | ||||||
权利要求 | |||||||
说明书全文 |