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ENA TELECOMUNICACIONES SA
Original Assignee
ENA TELECOMUNICACIONES SA
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Filing date
Publication date
Application filed by ENA TELECOMUNICACIONES SAfiledCriticalENA TELECOMUNICACIONES SA
Priority to ES9100834ApriorityCriticalpatent/ES2026113A6/en
Publication of ES2026113A6publicationCriticalpatent/ES2026113A6/en
System for the protection of spoken information transmitted via the telephone channel using techniques of digital encoding on a voice encoded at low speed, which is formed as an assembly of electronic devices which provide services such as telephone terminal, generating conversations on the electrical signal which conveys the speech information, preventing said information from being listened to in an undesired manner, having, at the other end of the line, similar equipment for the purpose of carrying out the reverse conversions and obtaining the original signal, the conversions consisting basically in digitizing the voice signal at low speed, carrying out digital encoding and transmitting them by means of modem.
ES9100834A1991-03-261991-03-26System for the protection of spoken information transmitted via the telephone channel
Expired - LifetimeES2026113A6
(en)
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