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:
Jun. 08, 2010
Filed:
May. 02, 2005
Chun-cheng Kuo, Taipei, TW;
Li-ren Huang, Taipei, TW;
Chun-Cheng Kuo, Taipei, TW;
Li-Ren Huang, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A clock and data recovery circuit comprising a phase detection circuit, first and second oscillators, and a flip-flop. The phase detection circuit outputs a detection signal according to a significant transition of an input signal. Each oscillator receives the detection signal and operates alternately in a clock and data recovery mode and a phase-locked mode. When the first oscillator operates in the clock and data recovery mode and outputs a first clock to control the flip-flop to output an output signal, the second oscillator operates in the phase-locked mode to adjust a frequency of a second clock. Before switching to the clock and data recovery mode, the second oscillator synchronizes the second clock with the first clock.