Method and apparatus for automatic address setting for recording and replay
US5157729A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1989 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Jun 13, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2027/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for address setting for speech recording and replay, includes an apparatus for storing a direct current (DC) voltage with a high frequency signal in the dynamic random access memory (DRAM) as an index for replay. During recording, the user can enter speech of different durations. During replay, the system automatically repeats the exact contents without any other background noise or noise speech at the end of the desired message. The apparatus includes a wave clearer, a direct current voltage generator, a high frequency signal generator, a DC voltage detecting and time setting circuit, a resetter, and a recording and replay signal generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.