SE409798B - Forfarande for forvrengning av talsignaler - Google Patents
Forfarande for forvrengning av talsignalerInfo
- Publication number
- SE409798B SE409798B SE7605731A SE7605731A SE409798B SE 409798 B SE409798 B SE 409798B SE 7605731 A SE7605731 A SE 7605731A SE 7605731 A SE7605731 A SE 7605731A SE 409798 B SE409798 B SE 409798B
- Authority
- SE
- Sweden
- Prior art keywords
- distortion
- procedure
- number signals
- signals
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Facsimile Transmission Control (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2523828A DE2523828C2 (de) | 1975-05-30 | 1975-05-30 | Verfahren zur Verschleierung von Sprachsignalen mit Hilfe orthogonaler Matrizen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7605731L SE7605731L (sv) | 1976-12-01 |
| SE409798B true SE409798B (sv) | 1979-09-03 |
Family
ID=5947713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7605731A SE409798B (sv) | 1975-05-30 | 1976-05-20 | Forfarande for forvrengning av talsignaler |
Country Status (11)
| Country | Link |
|---|---|
| AT (1) | AT351603B (sv) |
| AU (1) | AU501272B2 (sv) |
| BE (1) | BE842316A (sv) |
| CH (1) | CH613575A5 (sv) |
| DE (1) | DE2523828C2 (sv) |
| DK (1) | DK139408C (sv) |
| FR (1) | FR2312895A1 (sv) |
| GB (1) | GB1522062A (sv) |
| NL (1) | NL171003C (sv) |
| SE (1) | SE409798B (sv) |
| ZA (1) | ZA763090B (sv) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2811635A1 (de) * | 1978-03-17 | 1979-09-20 | Tekade Felten & Guilleaume | Pseudozufaellige erzeugung von orthogonalen matrizen fuer verschluesselungszwecke |
| CH649181A5 (de) * | 1980-02-01 | 1985-04-30 | Schweiz Eidgenossenschaft | Verfahren und schaltungsanordnung zur gesicherten uebertragung von sprachsignalen. |
| JP3724676B2 (ja) * | 1997-03-10 | 2005-12-07 | ソニー株式会社 | 通信方法及び送信装置並びに受信装置 |
| JPH1168696A (ja) * | 1997-08-19 | 1999-03-09 | Sony Corp | 通信方法及び送信装置及び受信装置並びにセルラー無線通信システム |
| CN110489989A (zh) * | 2019-08-27 | 2019-11-22 | 深圳市道通智能航空技术有限公司 | 数据加密/解密方法、其加密/解密芯片及其无人机 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH232786A (de) * | 1939-07-14 | 1944-06-15 | Patelhold Patentverwertung | Einrichtung zur geheimen Nachrichtenübermittlung. |
| CH237094A (de) * | 1939-07-26 | 1945-03-31 | Patelhold Patentverwertung | Verfahren und Einrichtung zur Übermittlung von geheimzuhaltenden Nachrichten. |
| BE455172A (sv) * | 1943-04-05 | |||
| CH246844A (de) * | 1945-09-15 | 1947-01-31 | Patelhold Patentverwertung | Verfahren und Einrichtung zur Verschleierung von elektrisch übermittelten Sprachnachrichten. |
| FR1582036A (sv) * | 1968-03-15 | 1969-09-26 |
-
1975
- 1975-05-30 DE DE2523828A patent/DE2523828C2/de not_active Expired
-
1976
- 1976-03-22 NL NLAANVRAGE7602959,A patent/NL171003C/xx not_active IP Right Cessation
- 1976-03-31 DK DK155076A patent/DK139408C/da not_active IP Right Cessation
- 1976-05-06 GB GB18567/76A patent/GB1522062A/en not_active Expired
- 1976-05-20 SE SE7605731A patent/SE409798B/sv not_active IP Right Cessation
- 1976-05-24 CH CH654276A patent/CH613575A5/xx not_active IP Right Cessation
- 1976-05-25 ZA ZA00763090A patent/ZA763090B/xx unknown
- 1976-05-27 AU AU14372/76A patent/AU501272B2/en not_active Expired
- 1976-05-28 BE BE167410A patent/BE842316A/xx unknown
- 1976-05-28 AT AT391676A patent/AT351603B/de not_active IP Right Cessation
- 1976-05-31 FR FR7616295A patent/FR2312895A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DK155076A (da) | 1976-12-01 |
| ATA391676A (de) | 1979-01-15 |
| AU1437276A (en) | 1977-12-01 |
| BE842316A (fr) | 1976-09-16 |
| GB1522062A (en) | 1978-08-23 |
| AT351603B (de) | 1979-08-10 |
| ZA763090B (en) | 1978-01-25 |
| NL7602959A (nl) | 1976-12-02 |
| CH613575A5 (en) | 1979-09-28 |
| FR2312895A1 (fr) | 1976-12-24 |
| SE7605731L (sv) | 1976-12-01 |
| DK139408B (da) | 1979-02-12 |
| NL171003C (nl) | 1983-01-17 |
| AU501272B2 (en) | 1979-06-14 |
| DE2523828C2 (de) | 1982-08-12 |
| DE2523828B1 (de) | 1976-11-25 |
| DK139408C (da) | 1979-07-30 |
| NL171003B (nl) | 1982-08-16 |
| FR2312895B1 (sv) | 1982-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
Ref document number: 7605731-4 Effective date: 19900518 Format of ref document f/p: F |