Invention Grant
- Patent Title: Automatic forward sense calibration for writing systems
- Patent Title (中): 写入系统的自动前向校准
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Application No.: US14030380Application Date: 2013-09-18
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Publication No.: US08854936B1Publication Date: 2014-10-07
- Inventor: Gary Christopher Maul , Tom Geukens
- Applicant: Marvell International Ltd.
- Applicant Address: BM Hamilton
- Assignee: Marvell International Ltd.
- Current Assignee: Marvell International Ltd.
- Current Assignee Address: BM Hamilton
- Main IPC: G11B7/12
- IPC: G11B7/12 ; G11B7/0045

Abstract:
Embodiments of optical disc drives are described that perform automatic forward sense calibration of write laser power using a sample and hold sampling strategy that is automatically determined based on an automatically selected write strategy. Embodiments of the described optical disc drive may be dynamically configured to support any optical disc media, any write mode, and any write strategy. The write strategies supported may include dynamically changing write speeds and/or write power levels across the respective optical media tracks. As the optical drive is automatically configured for a selected write media/write mode/write strategy, the sample and hold sampling delays used to control the sampling of a forward sense feedback signal are also automatically configured, thereby allowing each forward sense sampling point to be aligned with an area of the forward sense feedback signal that corresponds to a power level of interest and that avoids distortion in the feedback signal.
Information query
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