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 segments

Info

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
Application number
ES9100837A
Other languages
Spanish (es)
Inventor
Mazon Francisco Peran
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ENA TELECOMUNICACIONES SA
Original Assignee
ENA TELECOMUNICACIONES SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ENA TELECOMUNICACIONES SA filed Critical ENA TELECOMUNICACIONES SA
Priority to ES9100837A priority Critical patent/ES2026116A6/en
Publication of ES2026116A6 publication Critical patent/ES2026116A6/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
ES9100837A 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 Expired - Fee Related ES2026116A6 (en)

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)

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19991209