Invention Grant
- Patent Title: Methods and apparatus for performing interpolated timing recovery
- Patent Title (中): 用于执行内插定时恢复的方法和装置
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Application No.: US13285772Application Date: 2011-10-31
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Publication No.: US08395858B1Publication Date: 2013-03-12
- Inventor: Ke Han , Nitin Nangare , Zining Wu , Gregory Burd , Michael Madden
- Applicant: Ke Han , Nitin Nangare , Zining Wu , Gregory Burd , Michael Madden
- Applicant Address: BM Hamilton
- Assignee: Marvell International Ltd.
- Current Assignee: Marvell International Ltd.
- Current Assignee Address: BM Hamilton
- Main IPC: G11B5/09
- IPC: G11B5/09 ; G11B5/035

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.
Information query
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