Invention Grant
US07961424B2 Multilevel pulse position modulation for efficient encoding of information into servo patterns
有权
多级脉冲位置调制，用于将信息有效地编码成伺服模式
- Patent Title: Multilevel pulse position modulation for efficient encoding of information into servo patterns
- Patent Title (中): 多级脉冲位置调制，用于将信息有效地编码成伺服模式
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Application No.: US12609053Application Date: 2009-10-30
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Publication No.: US07961424B2Publication Date: 2011-06-14
- Inventor: Giovanni Cherubini , Jens Jelitto , Robert A. Hutchins , Mark A. Lantz
- Applicant: Giovanni Cherubini , Jens Jelitto , Robert A. Hutchins , Mark A. Lantz
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Stephen Kaufman
- Main IPC: G11B5/55
- IPC: G11B5/55
Abstract:
A storage medium on which servo patterns are encoded to provide lateral and longitudinal position (LPOS) information is provided. Each of the servo patterns includes a servo frame, including first through fourth bursts, which are each independently modulated with multi-level pulse position modulation (PPM) to encode at least one independent bit per burst.
Public/Granted literature
- US20110102927A1 MULTILEVEL PULSE POSITION MODULATION FOR EFFICIENT ENCODING OF INFORMATION INTO SERVO PATTERNS Public/Granted day:2011-05-05
Information query
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