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:
Sep. 11, 2018
Filed:
Jun. 01, 2017
Mstar Semiconductor, Inc., Hsinchu Hsien, TW;
MSTAR SEMICONDUCTOR, INC., Hsinchu Hsien, TW;
Abstract
A bandwidth adjusting method for a phase-locked loop (PLL) unit of a phase recovery module includes: adjusting an operating bandwidth of the PLL unit to a first bandwidth; measuring multiple first phase errors between a compensated input signal, which is generated according to an input signal and a phase compensating signal that the PLL unit generates, and a reference clock signal, and obtaining a first statistical value of the first phase errors; adjusting the operating bandwidth of the PLL unit to a second bandwidth; measuring multiple second phase differences between the compensated input signal and the reference clock signal, and obtaining a second statistical value of the second phase differences; and adjusting the operating bandwidth according to the first statistical value and the second statistical value. The first bandwidth and the second bandwidth are obtained by interpolating an upper bandwidth limit and a lower bandwidth limit.