ES8306552A1 - Procedimiento para la transmision de senales acusticas comprimidas en banda de frecuencia, protegidas contra las escuchas. - Google Patents
Procedimiento para la transmision de senales acusticas comprimidas en banda de frecuencia, protegidas contra las escuchas.Info
- Publication number
- ES8306552A1 ES8306552A1 ES515967A ES515967A ES8306552A1 ES 8306552 A1 ES8306552 A1 ES 8306552A1 ES 515967 A ES515967 A ES 515967A ES 515967 A ES515967 A ES 515967A ES 8306552 A1 ES8306552 A1 ES 8306552A1
- Authority
- ES
- Spain
- Prior art keywords
- sample values
- sum signal
- transmitting
- transmitted
- protection against
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/06—Secret communication by transmitting the information or elements thereof at unnatural speeds or in jumbled order or backwards
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Time-Division Multiplex Systems (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Radar Systems Or Details Thereof (AREA)
- Manipulator (AREA)
Abstract
PROCEDIMIENTO PARA LA TRANSMISION DE SEÑALES ACUSTICAS COMPRIMIDAS EN BANDA DE FRECUENCIA, PROTEGIDAS CONTRA LAS ESCUCHAS. EL PROCEDIMIENTO UTILIZA EL PRINCIPIO VOCODER DE CANAL. EN EL EMISOR SE OBTIENEN VALORES DE EXPLORACION (K1 ... K6,X) QUE PROPORCIONAN LA POTENCIA ESPECTRAL MEDIA EN UN MIEMBRO DE ANALISIS DE LA ENERGIA DE LA SEÑAL SUBDIVIDIDA EN CANALES ESPECTRALES, ASI COMO OTROS VALORES DE EXPLORACION QUE REPRESENTAN PARAMETROS ESPECIFICOS ACUSTICOS. ESTOS VALORES SE TRANSMITEN HACIA EL RECEPTOR JUNTO CON UNA INFORMACION SINCRONIZADA (SY), EN FORMA DE SEÑAL SUMA MULTIPLEXADA (SS) POR DISTRIBUCION EN EL TIEMPO. EN EL RECEPTOR, LOS VALORES INDIVIDUALES DE LA SEÑAL SUMA MULTIPLEXADA SE DISTRIBUYEN EN LOS CANALES ESPECTRALES CORRESPONDIENTES, EN LAS ENTRADAS ADECUADAS PARA LOS PARAMETROS ACUSTICOS ESPECIFICOS, Y EN UN MIEMBRO DE ANALISIS PARA LA INFORMACION SINCRONIZADA. ESTE GENERA A CONTINUACION SINTETICAMENTE LA SEÑAL ACUSTICA ORIGINAL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813138523 DE3138523A1 (de) | 1981-09-28 | 1981-09-28 | Verfahren zur abhoersicheren frequenzbandkomprimierten uebertragung von sprachsignalen |
Publications (2)
Publication Number | Publication Date |
---|---|
ES515967A0 ES515967A0 (es) | 1983-06-01 |
ES8306552A1 true ES8306552A1 (es) | 1983-06-01 |
Family
ID=6142792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES515967A Expired ES8306552A1 (es) | 1981-09-28 | 1982-09-27 | Procedimiento para la transmision de senales acusticas comprimidas en banda de frecuencia, protegidas contra las escuchas. |
Country Status (10)
Country | Link |
---|---|
US (1) | US4550222A (es) |
EP (1) | EP0075888B1 (es) |
JP (1) | JPS58137343A (es) |
AT (1) | ATE24988T1 (es) |
AU (1) | AU538736B2 (es) |
CA (1) | CA1193668A (es) |
DE (2) | DE3138523A1 (es) |
DK (1) | DK428982A (es) |
ES (1) | ES8306552A1 (es) |
NO (1) | NO155866C (es) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4742543A (en) * | 1983-12-22 | 1988-05-03 | Frederiksen Jeffrey E | Video transmission system |
JPS6345933A (ja) * | 1986-04-15 | 1988-02-26 | Nec Corp | 秘話装置 |
US4825468A (en) * | 1986-10-24 | 1989-04-25 | Broadband Engineering, Inc. | Video noise jammer |
US4817148A (en) * | 1987-07-06 | 1989-03-28 | Wegener Communications, Inc. | Signal scrambling transmission system |
NL8720747A (nl) * | 1987-08-26 | 1989-07-03 | Vnii Radiovesh Priema Akustiki | Stelsel voor het coderen en decoderen van geluidprogrammasignalen. |
US5025452A (en) * | 1990-03-20 | 1991-06-18 | Andrew Corporation | Full-duplex, sub-band spread spectrum communications system |
DE4329010A1 (de) * | 1993-08-28 | 1995-03-02 | Sel Alcatel Ag | Funksystem |
WO2009074711A1 (en) * | 2007-12-13 | 2009-06-18 | Nokia Corporation | Speech data encryption and decryption |
US10749657B2 (en) * | 2009-12-25 | 2020-08-18 | Nokia Solutions And Networks Oy | Mapping reference signal for multi-cell transmission |
US8326338B1 (en) | 2011-03-29 | 2012-12-04 | OnAir3G Holdings Ltd. | Synthetic radio channel utilizing mobile telephone networks and VOIP |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3944745A (en) * | 1945-05-10 | 1976-03-16 | Bell Telephone Laboratories, Incorporated | Secret signaling system with means for preventing key disclosure |
BE623892A (fr) * | 1961-10-23 | Siemens Ag | Procödé pour la transmissions électrique d'informations | |
US3204034A (en) * | 1962-04-26 | 1965-08-31 | Arthur H Ballard | Orthogonal polynomial multiplex transmission systems |
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 |
US4020285A (en) * | 1972-09-29 | 1977-04-26 | Datotek, Inc. | Voice security method and system |
DE2359673C2 (de) * | 1973-11-30 | 1982-05-27 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren zum Verschleiern des Informationsinhaltes von Frequenzbändern |
DE2450727C1 (de) * | 1974-10-25 | 1979-11-29 | Siemens Ag | Anordnung zur Informationsuebertragung |
US4052565A (en) * | 1975-05-28 | 1977-10-04 | Martin Marietta Corporation | Walsh function signal scrambler |
US4011408A (en) * | 1975-12-17 | 1977-03-08 | Trw Inc. | Audio transmission protection apparatus |
NL7600932A (nl) * | 1976-01-30 | 1977-08-02 | Philips Nv | Bandcompressie systeem. |
CH607506A5 (es) * | 1976-06-01 | 1978-12-29 | Europ Handelsges Anst | |
US4159399A (en) * | 1976-09-29 | 1979-06-26 | Tokyo Shibaura Electric Co., Ltd. | Security communication system using polarity inversion |
JPS5923507B2 (ja) * | 1978-08-08 | 1984-06-02 | 富士通株式会社 | 中継台経由の専用線と内線の接続方式 |
DE2854832C2 (de) * | 1978-12-19 | 1980-11-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Empfangsschaltung in einem störunterdrückenden Nachrichtenübertragungssystem mit schmalbandiger konventioneller Nachrichtenmodulation und zusätzlicher pseudozufalliger Phasensprungmodulation |
JPS6035865B2 (ja) * | 1979-12-27 | 1985-08-16 | 株式会社東芝 | デ−タ伝送方式 |
US4383322A (en) * | 1980-05-02 | 1983-05-10 | Harris Corporation | Combined use of PN sequence for data scrambling and frame synchronization in digital communication systems |
-
1981
- 1981-09-28 DE DE19813138523 patent/DE3138523A1/de not_active Withdrawn
-
1982
- 1982-07-23 US US06/400,997 patent/US4550222A/en not_active Expired - Fee Related
- 1982-09-15 NO NO823136A patent/NO155866C/no unknown
- 1982-09-24 CA CA000412152A patent/CA1193668A/en not_active Expired
- 1982-09-24 EP EP82108849A patent/EP0075888B1/de not_active Expired
- 1982-09-24 DE DE8282108849T patent/DE3275154D1/de not_active Expired
- 1982-09-24 AT AT82108849T patent/ATE24988T1/de active
- 1982-09-27 AU AU88757/82A patent/AU538736B2/en not_active Ceased
- 1982-09-27 ES ES515967A patent/ES8306552A1/es not_active Expired
- 1982-09-27 JP JP57166767A patent/JPS58137343A/ja active Granted
- 1982-09-27 DK DK428982A patent/DK428982A/da not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO155866C (no) | 1987-06-10 |
JPS6234306B2 (es) | 1987-07-25 |
ATE24988T1 (de) | 1987-01-15 |
DE3138523A1 (de) | 1983-04-07 |
US4550222A (en) | 1985-10-29 |
DE3275154D1 (en) | 1987-02-19 |
EP0075888A2 (de) | 1983-04-06 |
DK428982A (da) | 1983-03-29 |
ES515967A0 (es) | 1983-06-01 |
NO155866B (no) | 1987-03-02 |
EP0075888B1 (de) | 1987-01-14 |
JPS58137343A (ja) | 1983-08-15 |
CA1193668A (en) | 1985-09-17 |
NO823136L (no) | 1983-03-29 |
AU538736B2 (en) | 1984-08-23 |
EP0075888A3 (en) | 1985-01-30 |
AU8875782A (en) | 1983-08-04 |
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