Invention Grant
- Patent Title: Read channel apparatus for asynchronous sampling and synchronous equalization
- Patent Title (中): 用于异步采样和同步均衡的通道设备
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Application No.: US12166136Application Date: 2008-07-01
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Publication No.: US07684139B2Publication Date: 2010-03-23
- Inventor: Evangelos S. Eleftheriou , Robert A. Hutchins , Glen A. Jaquette , Jens Jelitto , Sedat Oeloer
- Applicant: Evangelos S. Eleftheriou , Robert A. Hutchins , Glen A. Jaquette , Jens Jelitto , Sedat Oeloer
- 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: G11B5/035
- IPC: G11B5/035

Abstract:
A read channel and method using that read channel are disclosed. The read channel comprises an analog to digital converter which asynchronously samples at a fixed rate an analog signal formed by reading a data track, where that data track was written to a data storage medium at a symbol rate and an interpolator interconnected with the analog to digital converter. The read channel further comprises a fractionally-spaced equalizer, where the interpolator provides an interpolated signal to the fractionally-spaced equalizer at an interpolation rate, where that interpolation rate is greater than the symbol rate. The fractionally-spaced equalizer forms a synchronous equalized signal. The read channel further comprises a gain control module interconnected with the fractionally-spaced equalizer, and a sequence detector interconnected with the gain control module.
Public/Granted literature
- US20080259484A1 READ CHANNEL APPARATUS FOR ASYNCHRONOUS SAMPLING AND SYNCHRONOUS EQUALIZATION Public/Granted day:2008-10-23
Information query
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