Write clock rephase for magnetic recording device
AssigneeMarvell International Ltd.
InventorsQiyue Zou, Supaket Katchmart, Gregory Burd
Life of this patent
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Abstract
The present disclosure includes systems and techniques relating to synchronization for writing to a recording medium. According to an aspect, an apparatus includes: circuitry configured to measure a timing difference based on a servo detect pulse and a write pulse, wherein the servo detect pulse comes from a detection of servo data from a recording medium including pre-defined data positions, and wherein the write pulse comes from a write clock signal used with the recording medium; and circuitry configured to control an adjustment to a phase of the write clock signal based on the timing difference to align the write clock signal with at least a portion of the pre-defined data positions.
Claims20
An apparatus comprising:
- circuitry configured to measure a timing difference based on a servo detect pulse and a write pulse, wherein the servo detect pulse comes from a detection of servo data from a recording medium comprising pre-defined data positions, and wherein the write pulse comes from a write clock signal used with the recording medium;
- and
- circuitry configured to control an adjustment to a phase of the write clock signal based on the timing difference to align the write clock signal with at least a portion of the pre-defined data positions.
A method comprising:
- obtaining (i) a servo detect pulse from a detection of servo data from a recording medium comprising pre-defined data positions and (ii) a write pulse from a write clock signal used with the recording medium;
- measuring a timing difference based on the servo detect pulse and the write pulse;
- and
- controlling an adjustment to a phase of the write clock signal based on the timing difference to align the write clock signal with at least a portion of the pre-defined data positions.
Dependencies are inferred from the claim text.