Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Year | Description |
| 1999 | Invention patented by John Zhuang on June 31th, 1999. Abstract: A self-calibrating radial runout cancellation method for DVD optical disc media. The radial runout of an optical disc is first measured, during closed-loop tracking, for amplitude and phase. During tracking, a sine wave corresponding in phase and amplitude to the radial runout of the optical disc is synthesized. This sine wave is used in a feed-forward configuration to precompensate for the radial runout of the optical disc. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
