Magnetic tape recording signal level adjustment device
US4831466A · kind A · utility
4Cited by
2References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Jul 27, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic tape recording signal level automatic adjustment device includes: a reproduced signal level attenuator responsive to an attenuation changeover instruction for attenuating the level of a reproduced signal from a PCM audio signal reproduction device by a predetermined quantity; and an attenuation controller responsive to a sampling instruction for comparing the reproduced signal level with a reference value and outputting the attenuation changeover instruction when the reproduced signal level exceeds the reference value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.