Technique for transmission of voice communications and apparatus useful therein
US4825451A · kind A · utility
7Cited by
14References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1984 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Apr 19, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/1688
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Apparatus for transmission of communications including apparatus for transmitting samples of an analog signal by conversion of such samples from their original frequencies to lower frequencies, extrapolating from the samples at the lower frequencies and reconverting the extrapolated samples to the original frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.