DSP-based data recovery

US7656982B2 · kind B2 · utility

Assignee

• Thomson Licensing · FR

Inventors

• Klaus Gaedke · Hannover, DE
• Friedrich Timmermann · Garbsen, DE
• Axel Kochale · Springe, DE
• Ralf Schaefer · Cesson-Sévigné, FR
• Herbert Schutze · Celle, DE
• Marten Kabutz · Villingen-Schwenningen, DE

Key dates

• Filing date: Apr 27, 2004
• Grant date: Feb 2, 2010
• Expiry date: Dec 21, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B2220/2562
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A bit clock recovery apparatus for digital storage readout employing sync frames, where an oversampled readout signal is stored in memory, sync patterns are located in the signal using DSP means, distances of consecutive sync pattern locations are calculated, and bit clock is recovered from these distances and the knowledge about the data framing structure.