ES2026116A6 - Protection system for spoken data transmitted by telephonic channel by means of combining techniques of frequency inversion and pseudo-random time permutation of voice segments - Google Patents
Protection system for spoken data transmitted by telephonic channel by means of combining techniques of frequency inversion and pseudo-random time permutation of voice segmentsInfo
- Publication number
- ES2026116A6 ES2026116A6 ES9100837A ES9100837A ES2026116A6 ES 2026116 A6 ES2026116 A6 ES 2026116A6 ES 9100837 A ES9100837 A ES 9100837A ES 9100837 A ES9100837 A ES 9100837A ES 2026116 A6 ES2026116 A6 ES 2026116A6
- Authority
- ES
- Spain
- Prior art keywords
- pseudo
- protection system
- data transmitted
- random time
- voice segments
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
Protection system for spoken data transmitted by telephone channel by means of combining techniques of frequency inversion and pseudo-random time permutation of voice segments, which consists of an assembly of electronic devices which effect transformations of the electric signal carrying the speech data and which are inserted between the telephone terminal connector and the connection rosette to the line, preventing undesired listening in and at the end of the line there being installed similar equipment which effects the reverse transformations, the original signal being obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9100837A ES2026116A6 (en) | 1991-03-26 | 1991-03-26 | Protection system for spoken data transmitted by telephonic channel by means of combining techniques of frequency inversion and pseudo-random time permutation of voice segments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9100837A ES2026116A6 (en) | 1991-03-26 | 1991-03-26 | Protection system for spoken data transmitted by telephonic channel by means of combining techniques of frequency inversion and pseudo-random time permutation of voice segments |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2026116A6 true ES2026116A6 (en) | 1992-04-01 |
Family
ID=8271919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9100837A Expired - Fee Related ES2026116A6 (en) | 1991-03-26 | 1991-03-26 | Protection system for spoken data transmitted by telephonic channel by means of combining techniques of frequency inversion and pseudo-random time permutation of voice segments |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2026116A6 (en) |
-
1991
- 1991-03-26 ES ES9100837A patent/ES2026116A6/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19991209 |