The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2018
Filed:
Jul. 06, 2017
Terng-yin Hsu, Hsinchu, TW;
Chi-hsu Chen, Hsinchu, TW;
Jung-chin Lai, Hsinchu, TW;
Hsiang-ming Yen, Hsinchu, TW;
Terng-Yin Hsu, Hsinchu, TW;
Chi-Hsu Chen, Hsinchu, TW;
Jung-Chin Lai, Hsinchu, TW;
Hsiang-Ming Yen, Hsinchu, TW;
NATIONAL APPLIED RESEARCH LABORATORIES, Hsinchu, TW;
Abstract
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.