Invention Grant
US07986602B2 Apparatus and method to set a rotation rate for an optical and holographic data storage medium
失效
用于设置光学和全息数据存储介质的旋转速率的装置和方法
- Patent Title: Apparatus and method to set a rotation rate for an optical and holographic data storage medium
- Patent Title (中): 用于设置光学和全息数据存储介质的旋转速率的装置和方法
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Application No.: US12030076Application Date: 2008-02-12
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Publication No.: US07986602B2Publication Date: 2011-07-26
- Inventor: Allen Keith Bates , Daniel James Winarski
- Applicant: Allen Keith Bates , Daniel James Winarski
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Quarles & Brady LLP
- Agent Dale F. Regelman
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
A method to set a rotation rate for an optical holographic data storage medium by determining if the optical storage layer comprises an alternating series of lands and grooves. If the optical storage layer does not comprise an alternating series of lands and grooves, the method rotates the optical holographic data storage medium at a rotation rate based upon a data acquisition rate for pit-recorded information. If the optical storage layer comprises an alternating series of lands and grooves and the distance between alternating grooves increases as a function of the distance from said center point, then the method rotates the optical holographic data storage medium at a constant angular velocity. If the distance between alternating grooves does not increase as a function of the distance from said center point, then the method rotates the optical holographic data storage medium at a constant linear velocity.
Public/Granted literature
- US20090201783A1 APPARATUS AND METHOD TO SET A ROTATION RATE FOR AN OPTICAL AND HOLOGRAPHIC DATA STORAGE MEDIUM Public/Granted day:2009-08-13
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