Method and related apparatus for decoding information carried by wobble signals
US7200093B2 · kind B2 · utility
2Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2004 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Apr 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for generating a wobble clock includes an operation circuit for receiving a wobble signal and counting cycles of an oscillating signal during a cycle of the wobble signal to derive a cycle value and for comparing the cycle value with a preset cycle value to output a first protection signal, and a phase-locked loop circuit connected to the operation circuit for receiving the wobble signal, the wobble clock and the first protection signal, and determining whether the wobble clock is to be synchronized with the wobble signal according to the first protection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.