Apparatus and method for reproducing video signals
US4180833A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Feb 15, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/78263
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an apparatus for reproducing video signals which are recorded as modulations of a carrier on a record medium, such as a magnetic tape, in successive, abutting parallel record tracks, with the signals being recorded in alternating tracks with different first and second azimuth angles, first and second magnetic heads are provided for sequentially scanning the tracks in which signals are recorded with the first and second azimuth angles, respectively, and the first and second magnetic heads having azimuth angles corresponding to the first and second azimuth angles of the respective tracks to be scanned thereby. Each of the magnetic heads is dimensioned and guided in the direction transverse to the direction along the respective track being scanned so as to overlap an adjacent track by a distance .DELTA.W=n.lambda./tan .theta.(n=1,2, . . .), in which .lambda. is the wavelength of the carrier as modulated by synchronizing signal portions of the video signals recorded in such adjacent track, and .theta. is the difference between the first and second azimuth angles of the heads. In this manner, cross-talk from the adjacent track is substantially attenuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.