Digital audio transmission apparatus
US5719574A · kind A · utility
5Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1995 |
| Grant date | Feb 17, 1998 |
| Priority date | — |
| Expiry date | Aug 4, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/00065
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio signal recording device having an input terminal, a modulator for modulating an input signal, a detecting circuit for detecting whether an input signal maintains a fixed value for a predetermined period of time, a signal generator for generating an idling signal, a delay circuit for delaying a modulated input signal and a switch for alternately inputting either the idling signal or modulated input signal to a recording circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.