Magnetic tape recorder/reproducer for ratio recording with synchronized internal and external clock rates
US4127878A · kind A · utility
8Cited by
2References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1976 |
| Grant date | Nov 28, 1978 |
| Priority date | — |
| Expiry date | Jun 28, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4904
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data processing system which synchronizes an internal clock with an external clock. The system can be incorporated as part of a magnetic reproducer apparatus or magnetic recorder apparatus. The recorder/reproducer apparatus utilizes ratio encoding schemes to convert conventional data into encoded data to be recorded onto a magnetic medium. It can also read the encoded data from a magnetic medium and convert it back into conventional data. In either case, the synchronized internal clock is utilized as the time base for the ratio encoding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.