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:
Nov. 01, 2011
Filed:
Nov. 25, 2008
KE Han, Fremont, CA (US);
Nitin Nangare, Santa Clara, CA (US);
Zining Wu, Los Altos, CA (US);
Gregory Burd, San Jose, CA (US);
Michael Madden, Mountain View, CA (US);
Ke Han, Fremont, CA (US);
Nitin Nangare, Santa Clara, CA (US);
Zining Wu, Los Altos, CA (US);
Gregory Burd, San Jose, CA (US);
Michael Madden, Mountain View, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
Methods and apparatus are provided for performing interpolated timing recovery using a frequency and phase estimate. An analog signal representing a sector is asynchronously sampled and stored in a storage device. A retiming circuit reads the stored samples and, based on first portions of first and second timing portions of the sector, determines phase adjustments. The retiming circuit generates a signal representing the samples at the adjusted phase and determines sample shift adjustments based on the generated signal and second portions of the first and second timing portions. The retiming circuit computes start and end indices of the sector in the buffer based on the sample shift adjustment and phase adjustment. The start and end indices may be used to compute a frequency estimate. The frequency estimate and a phase adjustment is used to interpolate the asynchronous samples at the appropriate frequency and phase.