Method of magnetically recording coded digital video signals and an apparatus therefor
US4670797A · kind A · utility
1Cited by
6References
34Claims
0Family size
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Key dates
| Filing date | Feb 19, 1985 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Feb 19, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/804
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved 8-8 mpping table system in digitally and magnetically recording video signals. Video signals coded into natural binary codes consisting of 8 bits are converted into different binary codes consisting of 8 bits constituted by patterns in which a continuous number of the 1's or the 0's does not exceed a predetermined number. In these codes, the continuous number of the 1's or the 0's is so limited that a maximum magnetization interval is reduced in magnetically recording the signals. Therefore, erroneous code is prevented from occurring in reproducing the signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.