Distortion reduction circuit for video playback
US4789908A · kind A · utility
2Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 1987 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | May 5, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/9315
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The correction of broadband signals reproduced from magnetic tape are corrected for distortion by three stages in cascade, which the first serves to correct distortion in the group propagation time through the system of playback magnetic head and playback preamplifier, the second directs for amplitude distortion including a 90.degree. phase rotation and the third stage provides equilization to compensate for high frequency losses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.