ES458856A1 - Procedimiento, con su correspondiente dispositivo, para ci- frar, respectivamente, informacion sonora. - Google Patents
Procedimiento, con su correspondiente dispositivo, para ci- frar, respectivamente, informacion sonora.Info
- Publication number
- ES458856A1 ES458856A1 ES458856A ES458856A ES458856A1 ES 458856 A1 ES458856 A1 ES 458856A1 ES 458856 A ES458856 A ES 458856A ES 458856 A ES458856 A ES 458856A ES 458856 A1 ES458856 A1 ES 458856A1
- Authority
- ES
- Spain
- Prior art keywords
- information channel
- time
- subdivided
- sub
- sections
- 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
Links
- 230000005236 sound signal Effects 0.000 abstract 2
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
- Mobile Radio Communication Systems (AREA)
- Storage Device Security (AREA)
- Document Processing Apparatus (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
Procedimiento con su correspondiente dispositivo para cifrar y descifrar, respectivamente, información sonora, que está repartida en el eje de tiempo en bloques parciales que, de acuerdo con una información clave son cambiados entre sí, siendo repartidas las señales sonoras análogas entrantes en varias bandas de frecuencia de las que cada una determina un canal de información.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH689376A CH607506A5 (es) | 1976-06-01 | 1976-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES458856A1 true ES458856A1 (es) | 1978-03-16 |
Family
ID=4316707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES458856A Expired ES458856A1 (es) | 1976-06-01 | 1977-05-17 | Procedimiento, con su correspondiente dispositivo, para ci- frar, respectivamente, informacion sonora. |
Country Status (19)
Country | Link |
---|---|
US (1) | US4149035A (es) |
JP (1) | JPS534401A (es) |
AR (1) | AR216465A1 (es) |
AT (1) | AT363129B (es) |
BE (1) | BE854626A (es) |
BR (1) | BR7703539A (es) |
CA (1) | CA1092195A (es) |
CH (1) | CH607506A5 (es) |
DE (1) | DE2723804C2 (es) |
DK (1) | DK239177A (es) |
ES (1) | ES458856A1 (es) |
FI (1) | FI771737A (es) |
FR (1) | FR2354005A1 (es) |
GB (1) | GB1567868A (es) |
IT (1) | IT1118027B (es) |
NL (1) | NL7705062A (es) |
NO (1) | NO144722C (es) |
SE (1) | SE416604B (es) |
ZA (1) | ZA773157B (es) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4221931A (en) * | 1977-10-17 | 1980-09-09 | Harris Corporation | Time division multiplied speech scrambler |
US4232194A (en) * | 1979-03-16 | 1980-11-04 | Ocean Technology, Inc. | Voice encryption system |
US4278840A (en) * | 1979-03-23 | 1981-07-14 | Datotek, Inc. | Dynamic frequency and time voice encryption system and method |
US4443660A (en) * | 1980-02-04 | 1984-04-17 | Rockwell International Corporation | System and method for encrypting a voice signal |
DE3138523A1 (de) * | 1981-09-28 | 1983-04-07 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur abhoersicheren frequenzbandkomprimierten uebertragung von sprachsignalen |
US4433211A (en) * | 1981-11-04 | 1984-02-21 | Technical Communications Corporation | Privacy communication system employing time/frequency transformation |
US4591673A (en) * | 1982-05-10 | 1986-05-27 | Lee Lin Shan | Frequency or time domain speech scrambling technique and system which does not require any frame synchronization |
US4551580A (en) * | 1982-11-22 | 1985-11-05 | At&T Bell Laboratories | Time-frequency scrambler |
US4763357A (en) * | 1985-04-18 | 1988-08-09 | Barr William S | Method and apparatus for providing secure electronic communications |
GB2182229B (en) * | 1985-10-25 | 1989-10-04 | Racal Res Ltd | Speech scramblers |
US4893339A (en) * | 1986-09-03 | 1990-01-09 | Motorola, Inc. | Secure communication system |
EP0313029A1 (de) * | 1987-10-21 | 1989-04-26 | Siemens Aktiengesellschaft Österreich | Vorrichtung zur verschleierten Übertragung analoger Signale |
US6061449A (en) * | 1997-10-10 | 2000-05-09 | General Instrument Corporation | Secure processor with external memory using block chaining and block re-ordering |
EP1617586B1 (fr) * | 2004-07-06 | 2008-09-03 | Proton World International N.V. | Chiffrement en continu du contenu d'une mémoire externe à un processeur |
EP1615369A1 (fr) * | 2004-07-06 | 2006-01-11 | Proton World International N.V. | Chiffrement par blocs du contenu d'une mémoire externe à un processeur |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH248975A (de) * | 1946-02-04 | 1947-05-31 | Patelhold Patentverwertung | Verfahren und Einrichtung zur Verschleierung der einzelnen Gespräche einer Mehrkanalanlage. |
US3696207A (en) * | 1969-05-14 | 1972-10-03 | Philips Corp | System for the transmission of intelligence by means of scrambled audiosignals |
CH518658A (de) * | 1970-07-07 | 1972-01-31 | Patelhold Patentverwaltungs Un | Verfahren zur verschlüsselten Nachrichtenübermittlung durch zeitliche Vertauschung von Informationselementen |
US3921151A (en) * | 1971-06-21 | 1975-11-18 | Patelhold Patentwerwertungs & | Apparatus for enciphering transmitted data by interchanging signal elements of the transmitted data without overlapping or omitting any elements within the transmitted signal train |
US3798360A (en) * | 1971-06-30 | 1974-03-19 | Ibm | Step code ciphering system |
US3991271A (en) * | 1972-09-29 | 1976-11-09 | Datotek, Inc. | Voice security method and system |
-
1976
- 1976-06-01 CH CH689376A patent/CH607506A5/xx not_active IP Right Cessation
-
1977
- 1977-05-09 NL NL7705062A patent/NL7705062A/xx not_active Application Discontinuation
- 1977-05-11 AR AR267569A patent/AR216465A1/es active
- 1977-05-13 BE BE177571A patent/BE854626A/xx not_active IP Right Cessation
- 1977-05-16 AT AT0350977A patent/AT363129B/de not_active IP Right Cessation
- 1977-05-17 ES ES458856A patent/ES458856A1/es not_active Expired
- 1977-05-17 IT IT23670/77A patent/IT1118027B/it active
- 1977-05-25 ZA ZA00773157A patent/ZA773157B/xx unknown
- 1977-05-25 GB GB22007/77A patent/GB1567868A/en not_active Expired
- 1977-05-26 SE SE7706207A patent/SE416604B/xx not_active IP Right Cessation
- 1977-05-26 FR FR7716116A patent/FR2354005A1/fr active Granted
- 1977-05-26 JP JP6053577A patent/JPS534401A/ja active Pending
- 1977-05-26 DE DE2723804A patent/DE2723804C2/de not_active Expired
- 1977-05-27 CA CA279,291A patent/CA1092195A/en not_active Expired
- 1977-05-31 DK DK239177A patent/DK239177A/da not_active Application Discontinuation
- 1977-05-31 NO NO771908A patent/NO144722C/no unknown
- 1977-05-31 BR BR7703539A patent/BR7703539A/pt unknown
- 1977-06-01 US US05/802,427 patent/US4149035A/en not_active Expired - Lifetime
- 1977-06-01 FI FI771737A patent/FI771737A/fi not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
ATA350977A (de) | 1980-12-15 |
US4149035A (en) | 1979-04-10 |
CA1092195A (en) | 1980-12-23 |
GB1567868A (en) | 1980-05-21 |
FR2354005A1 (fr) | 1977-12-30 |
NO771908L (no) | 1977-12-02 |
SE416604B (sv) | 1981-01-19 |
AT363129B (de) | 1981-07-10 |
FI771737A (es) | 1977-12-02 |
FR2354005B3 (es) | 1980-04-04 |
BR7703539A (pt) | 1978-03-14 |
NL7705062A (nl) | 1977-12-05 |
BE854626A (fr) | 1977-11-14 |
DE2723804A1 (de) | 1977-12-15 |
ZA773157B (en) | 1979-01-31 |
JPS534401A (en) | 1978-01-17 |
DE2723804C2 (de) | 1986-02-27 |
IT1118027B (it) | 1986-02-24 |
NO144722B (no) | 1981-07-13 |
DK239177A (da) | 1977-12-02 |
CH607506A5 (es) | 1978-12-29 |
SE7706207L (sv) | 1977-12-02 |
NO144722C (no) | 1981-10-21 |
AR216465A1 (es) | 1979-12-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19991102 |