DOS compatible dictation and voice mail system
US5699411A · kind A · utility
16Cited by
4References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 17, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Jan 17, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A hardware add-on including an interface to external I/O, a voice processor, and a micro-controller along with a terminate and stay resident program allow a digital dictation and voice mail system to run transparently on a PC operating under DOS. A hardware DTMF transceiver and software template files which equate strings representing DTMF tone signals to DOS commands permits dictation through a touch-tone phone. Voice sampling and playback speed are controlled with a reference signal and a feedback loop to an oscillator controlling the sampling rate of the voice processor. Dictation, template, and message files are DOS formatted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.