Storage Management White Papers
EFMPlus Data Recovery Circuit With a Fast Locking Scheme for 12X Speed DVD-ROM Drivers
Overview This paper proposes an EFMplus (Eight to Fourteen Modulation plus code) data recovery circuit for 12X speed DVD-ROM drivers. This data recovery circuit consists of a Frequency Locking Loop (FLL) and a Phase Locking Loop (PLL). The frequency locking loop in the proposed data recovery circuit has the characteristic of a variable system transfer function, depending on the number of frequency errors. For large frequency errors, the FLL increases the loop gain to achieve fast locking while for small frequency errors, this FLL decreases the loop gain to reduce the settling time. Also, this FLL has a function that adaptively controls the loop bandwidth according to the input frequencies.
| Publisher | Korea University | File Format | |
|---|---|---|---|
| Date Published | April 2002 | ||
| Format | White Papers | ||
| Topics | |||
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