Invention Grant
- Patent Title: Prediction based digital control for fractional-N PLLs
- Patent Title (中): 用于分数N PLL的基于预测的数字控制
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Application No.: US14496643Application Date: 2014-09-25
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Publication No.: US09225348B2Publication Date: 2015-12-29
- Inventor: Herschel A. Ainspan , Mark A. Ferriss , Daniel J. Friedman , Alexander V. Rylyakov , Bodhisatwa Sadhu , Alberto Valdes Garcia
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Tutunjian & Bitetto, P.C.
- Agent Anne V. Dougherty
- Main IPC: H03L7/06
- IPC: H03L7/06 ; H03L7/099 ; H03L7/085 ; H03L7/197

Abstract:
Methods and systems for phase correction include determining a phase error direction and generating a prediction for the phase error based on a sigma-delta error. It is determined whether the prediction agrees with the determined phase error direction. If the prediction does not agree, a phase correction is adjusted in accordance with the predicted phase error.
Public/Granted literature
- US20150200676A1 PREDICTION BASED DIGITAL CONTROL FOR FRACTIONAL-N PLLS Public/Granted day:2015-07-16
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