AR216465A1 - Aparato para cifrar y descifrar informacion sonora - Google Patents

Aparato para cifrar y descifrar informacion sonora

Info

Publication number
AR216465A1
AR216465A1 AR267569A AR26756977A AR216465A1 AR 216465 A1 AR216465 A1 AR 216465A1 AR 267569 A AR267569 A AR 267569A AR 26756977 A AR26756977 A AR 26756977A AR 216465 A1 AR216465 A1 AR 216465A1
Authority
AR
Argentina
Prior art keywords
decrypting
encrypting
sound information
sound
information
Prior art date
Application number
AR267569A
Other languages
English (en)
Spanish (es)
Original Assignee
Europ Handelsges Anst
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 Europ Handelsges Anst filed Critical Europ Handelsges Anst
Application granted granted Critical
Publication of AR216465A1 publication Critical patent/AR216465A1/es

Links

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)
AR267569A 1976-06-01 1977-05-11 Aparato para cifrar y descifrar informacion sonora AR216465A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH689376A CH607506A5 (nl) 1976-06-01 1976-06-01

Publications (1)

Publication Number Publication Date
AR216465A1 true AR216465A1 (es) 1979-12-28

Family

ID=4316707

Family Applications (1)

Application Number Title Priority Date Filing Date
AR267569A AR216465A1 (es) 1976-06-01 1977-05-11 Aparato para cifrar y descifrar informacion sonora

Country Status (19)

Country Link
US (1) US4149035A (nl)
JP (1) JPS534401A (nl)
AR (1) AR216465A1 (nl)
AT (1) AT363129B (nl)
BE (1) BE854626A (nl)
BR (1) BR7703539A (nl)
CA (1) CA1092195A (nl)
CH (1) CH607506A5 (nl)
DE (1) DE2723804C2 (nl)
DK (1) DK239177A (nl)
ES (1) ES458856A1 (nl)
FI (1) FI771737A (nl)
FR (1) FR2354005A1 (nl)
GB (1) GB1567868A (nl)
IT (1) IT1118027B (nl)
NL (1) NL7705062A (nl)
NO (1) NO144722C (nl)
SE (1) SE416604B (nl)
ZA (1) ZA773157B (nl)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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 (nl) 1977-12-02
FR2354005B3 (nl) 1980-04-04
ES458856A1 (es) 1978-03-16
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 (nl) 1978-12-29
SE7706207L (sv) 1977-12-02
NO144722C (no) 1981-10-21

Similar Documents

Publication Publication Date Title
NL7809878A (nl) Magnetische opneem- en reproductie-inrichting.
IT8022413A0 (it) Apparato per registrazioni e/o riproduzioni magnetiche.
PL202937A1 (pl) Urzadzenie do laserowego zapisu danych i znakow
NL7704921A (nl) Magnetische registratie- en weergeefinrichting.
FR2343307A1 (fr) Appareil de lecture de disque notamment electrophone
AR216465A1 (es) Aparato para cifrar y descifrar informacion sonora
IT1115327B (it) Trasduttore perfezionata per dischi di registrazione magnetici
AT356914B (de) Geraet zum aufzeichnen und/oder wiedergeben
IT991970B (it) Apparecchiature di registrazione e oppure riproduzione magnetica
NL7704780A (nl) Magnetische opneem- en weergeefinrichting.
IT1085626B (it) Apparato di riproduzione
NL7711724A (nl) Magnetisch registratiemedium.
IT1029752B (it) Apparecchio di registrazione e oppure riproduzione magnetica
IT1079313B (it) Apparecchio di registrazione e oppure riproduzione magnetica
SE396824B (sv) Forfarande for att astadkomma sekretessbelagd information
IT999494B (it) Apparato magnetico di registrazione e.o di riproduzione
IT1077429B (it) Apparato di riproduzione
NL7711403A (nl) Magnetische opneem- en weergeefinrichting.
IT1164502B (it) Dispositivo per la registrazione e la riproduzione magnetica,particolarmente per sussidi didattici autiovisivi
SE7601519L (sv) Forfarande och anordning for programstyrd formedling av data
SE405515B (sv) Anordning for inmatning och kodning av datatecken
IT1040129B (it) Dispositivo e procedimento per registrabe e riprodurre radio grafie
ES494252A0 (es) Procedimiento y dispositivo para codificar y descodificar informacion
BR7608803A (pt) Meio de gravacao pregravado e processo para sua fabricaca
IT1083714B (it) Procedimento e dispositivo di registrazione radiografica