Time-axis correcting circuit for recorded data reproducing device
US4631600A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 24, 1984 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Apr 24, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/953
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A time-axis correcting circuit for a recorded data reproducing device such as a video disc player in which, even when a dominant time-axis error component is not a single-frequency component, suppression thereof is sufficiently achieved with a relatively simple circuit configuration. The time-axis correcting circuit includes first and second time-axis correcting circuits, each of which has a flywheel oscillator servo loop. The oscillation frequency of the first flywheel oscillator servo loop is set close to the lowest frequency of the dominant time-axis error component to be suppressed while that of the second time-axis correcting circuit is set close to the highest frequency of the dominant time-axis error component to be suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.