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:
Jul. 10, 2018
Filed:
Aug. 23, 2016
Mediatek Inc., Hsin-Chu, TW;
Yun-Chen Chuang, Hsinchu, TW;
Ang-Sheng Lin, Kaohsiung, TW;
MEDIATEK INC., Hsin-Chu, TW;
Abstract
A time-to-digital system and associated frequency synthesizer are provided. The time-to-digital system receives a reference clock and a variable clock. The time-to-digital system includes a supplement circuit and a time-to-digital converter (TDC). The supplement circuit generates a delayed reference clock signal and at least one pulse of a variable clock ahead of a transition of the delayed reference clock signal. The delayed reference clock signal is generated according to a delay control signal and the reference clock signal. The delay control signal is determined in response to transitions of the variable clock, and frequency of the variable clock is significantly higher than frequency of the reference clock signal. Being coupled to the supplement circuit, the TDC receives the delayed reference clock signal and the at least one pulse of the variable clock and accordingly produces a TDC signal.