Time-axis correcting circuit for recorded data reproducing device
US4607360A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1983 |
| Grant date | Aug 19, 1986 |
| Priority date | — |
| Expiry date | Dec 12, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/893
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A time-axis correcting circuit for a recorded data reproducing device, such as a video tape player or video disc player, in which dominant and other time-axis errors are substantially completely suppressed. The reproduced signal is applied to the input of a variable delay circuit. A timing data component, such as the color burst signal, is separated from the delayed reproduced signal and applied to a flywheel oscillator, the open-loop oscillation frequency of which is set at least approximately to the frequency of a dominant time-axis error component to be suppressed. The output of the flywheel oscillator is applied through a voltage-controlled oscillator to the control input of the variable delay circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.