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:
Dec. 30, 2003
Filed:
May. 10, 2002
Abstract
A data recovery circuit and a method thereof, which are capable of reducing locking time and jitter, are provided. The data recovery circuit includes a frequency-locked loop, a locking detector, a delay-locked loop, and a data determination circuit. The frequency-locked loop locks the frequency of an internal clock signal fed back thereto in response to an input signal with the frequency of the input signal and generates a frequency locking signal representing that the input signal is frequency-locked with the internal clock signal. The locking detector determines whether the frequency of the internal clock signal is in a predetermined frequency range of the input signal in response to the frequency locking signal and generates a phase control signal. The delay-locked loop is controlled by the phase control signal, locks the phase of the internal clock signal with the phase of the input signal, and generates a recovery locking signal. The data determination circuit receives the recovery locking signal as a clock signal, receives the input signal in response to the clock signal, and outputs the input signal as output data.