FR2376574A1 - Systeme de radiotelephonie - Google Patents
Systeme de radiotelephonieInfo
- Publication number
- FR2376574A1 FR2376574A1 FR7738247A FR7738247A FR2376574A1 FR 2376574 A1 FR2376574 A1 FR 2376574A1 FR 7738247 A FR7738247 A FR 7738247A FR 7738247 A FR7738247 A FR 7738247A FR 2376574 A1 FR2376574 A1 FR 2376574A1
- Authority
- FR
- France
- Prior art keywords
- radiotelephony
- public
- transmission
- code
- reception
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2659622A DE2659622C2 (de) | 1976-12-30 | 1976-12-30 | Funktelefoniesystem |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2376574A1 true FR2376574A1 (fr) | 1978-07-28 |
FR2376574B1 FR2376574B1 (da) | 1980-08-22 |
Family
ID=5997076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7738247A Granted FR2376574A1 (fr) | 1976-12-30 | 1977-12-19 | Systeme de radiotelephonie |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5826864B2 (da) |
AT (1) | AT360593B (da) |
BE (1) | BE862540A (da) |
CH (1) | CH625650A5 (da) |
DE (1) | DE2659622C2 (da) |
DK (1) | DK148049B (da) |
FR (1) | FR2376574A1 (da) |
GB (1) | GB1584579A (da) |
IT (1) | IT1089194B (da) |
NL (1) | NL176823C (da) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2927885A1 (de) * | 1979-07-11 | 1981-01-29 | Bosch Gmbh Robert | Funkanlage mit einer zentralstation und mehreren, vorzugsweise mobilen sende-/empfangsstationen |
DE3150254A1 (de) * | 1981-04-13 | 1983-07-14 | Siemens AG, 1000 Berlin und 8000 München | Einrichtung zur verschluesselten digitalen informationsuebertragung |
US4549308A (en) * | 1982-07-12 | 1985-10-22 | At&T Bell Laboratories | Secure mobile radio telephony |
DE3335672A1 (de) * | 1983-09-30 | 1985-04-04 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur verschluesselten nachrichtenuebertragung |
DE3402467A1 (de) * | 1984-01-25 | 1985-08-01 | Philips Kommunikations Industrie AG, 8500 Nürnberg | Gegen leistungserschleichung gesichertes waehlverfahren fuer die teilnehmer eines funknetzes, insbesondere mobilfunknetzes |
DE3439159A1 (de) * | 1984-01-25 | 1986-04-30 | Philips Kommunikations Industrie AG, 8500 Nürnberg | Gegen leistungserschleichung gesichertes waehlverfahren |
DE3410936C2 (de) * | 1984-03-24 | 1997-09-18 | Philips Patentverwaltung | Verfahren zum Erkennen der unerlaubten Benutzung einer, einer beweglichen Funkstation zugeordneten Identifizierung in einem Funkübertragungssystem |
DE3420874A1 (de) * | 1984-06-05 | 1985-12-05 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren und anordnung zur kontrolle des netzzugangs in fernmeldenetzen |
DE3439120A1 (de) * | 1984-10-25 | 1986-05-07 | Philips Kommunikations Industrie AG, 8500 Nürnberg | Verfahren zur identifizierung einer teilnehmerstation eines fernmeldenetzes |
JPS61199342A (ja) * | 1985-02-28 | 1986-09-03 | Tamura Electric Works Ltd | コ−ドレス電話装置 |
DE4242151C1 (de) * | 1992-12-14 | 1994-03-24 | Detecon Gmbh | Verfahren zur Sicherung eines Mobilfunkgerätes gegen unerlaubte Benutzung |
DE4336995A1 (de) * | 1993-10-29 | 1995-05-04 | Sel Alcatel Ag | Verfahren und Vorrichtung zur Bestimmung der Zuordnung eines Mobilfunkgerätes zu Geräte-Listen |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2220938A1 (da) * | 1973-03-09 | 1974-10-04 | Philips Nv |
-
1976
- 1976-12-30 DE DE2659622A patent/DE2659622C2/de not_active Expired
-
1977
- 1977-12-05 CH CH1481177A patent/CH625650A5/de not_active IP Right Cessation
- 1977-12-19 FR FR7738247A patent/FR2376574A1/fr active Granted
- 1977-12-22 IT IT31081/77A patent/IT1089194B/it active
- 1977-12-26 JP JP52157173A patent/JPS5826864B2/ja not_active Expired
- 1977-12-29 DK DK585277AA patent/DK148049B/da not_active Application Discontinuation
- 1977-12-29 AT AT938977A patent/AT360593B/de not_active IP Right Cessation
- 1977-12-29 GB GB54071/77A patent/GB1584579A/en not_active Expired
- 1977-12-29 NL NLAANVRAGE7714545,A patent/NL176823C/xx not_active IP Right Cessation
- 1977-12-30 BE BE184023A patent/BE862540A/xx not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2220938A1 (da) * | 1973-03-09 | 1974-10-04 | Philips Nv |
Non-Patent Citations (1)
Title |
---|
NV8027/72 * |
Also Published As
Publication number | Publication date |
---|---|
JPS5384602A (en) | 1978-07-26 |
GB1584579A (en) | 1981-02-11 |
NL7714545A (nl) | 1978-07-04 |
IT1089194B (it) | 1985-06-18 |
DK585277A (da) | 1978-07-01 |
CH625650A5 (en) | 1981-09-30 |
ATA938977A (de) | 1980-06-15 |
BE862540A (fr) | 1978-04-14 |
NL176823C (nl) | 1985-06-03 |
DE2659622B1 (de) | 1978-05-11 |
AT360593B (de) | 1981-01-26 |
DE2659622C2 (de) | 1979-01-04 |
NL176823B (nl) | 1985-01-02 |
JPS5826864B2 (ja) | 1983-06-06 |
FR2376574B1 (da) | 1980-08-22 |
DK148049B (da) | 1985-02-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |