DK52682A - PROCEDURES FOR REPLACING DELBAND - Google Patents

PROCEDURES FOR REPLACING DELBAND

Info

Publication number: DK52682A
Authority: DK; Denmark
Prior art keywords: delband; replacing; procedures; replacing delband
Prior art date: 1981-02-13

Application number

DK52682A

Other languages

Danish (da)

Inventor

H Goeckler

Original Assignee

Licentia Gmbh

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.)

1981-02-13

Filing date

1982-02-08

Publication date

1982-08-14

1982-02-08 Application filed by Licentia Gmbh filed Critical Licentia Gmbh

1982-08-14 Publication of DK52682A publication Critical patent/DK52682A/en

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)
Compression, Expansion, Code Conversion, And Decoders (AREA)
Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Position Fixing By Use Of Radio Waves (AREA)
Synchronisation In Digital Transmission Systems (AREA)

DK52682A 1981-02-13 1982-02-08 PROCEDURES FOR REPLACING DELBAND DK52682A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19813105214 DE3105214A1 (en)	1981-02-13	1981-02-13	"SUB-TAPE EXCHANGE PROCEDURE"

Publications (1)

Publication Number	Publication Date
DK52682A true DK52682A (en)	1982-08-14

Family

ID=6124771

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK52682A DK52682A (en)	1981-02-13	1982-02-08	PROCEDURES FOR REPLACING DELBAND

Country Status (7)

Country	Link
EP (1)	EP0058318B1 (en)
CA (1)	CA1186380A (en)
DE (2)	DE3105214A1 (en)
DK (1)	DK52682A (en)
ES (1)	ES8302387A1 (en)
FI (1)	FI820393L (en)
PT (1)	PT74410B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS6424648A (en) *	1987-07-21	1989-01-26	Fujitsu Ltd	Privacy call equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2408692A (en) *	1942-04-29	1946-10-01	Rca Corp	Signaling system
CH248975A (en) *	1946-02-04	1947-05-31	Patelhold Patentverwertung	Process and device for disguising the individual calls in a multi-channel system.
DE1273002B (en) *	1963-09-11	1968-07-18	Siemens Ag	Device for the encrypted transmission of voice signals by interchanging subbands
DE2652607A1 (en) *	1976-11-19	1978-05-24	Licentia Gmbh	Analogue information signal encoder - includes array of ring modulators and stores time and frequency multiplexed elements in digital form

1981
- 1981-02-13 DE DE19813105214 patent/DE3105214A1/en not_active Withdrawn
1982
- 1982-01-29 EP EP82100607A patent/EP0058318B1/en not_active Expired
- 1982-01-29 DE DE8282100607T patent/DE3260506D1/en not_active Expired
- 1982-02-05 CA CA000395659A patent/CA1186380A/en not_active Expired
- 1982-02-08 DK DK52682A patent/DK52682A/en not_active Application Discontinuation
- 1982-02-08 FI FI820393A patent/FI820393L/en not_active Application Discontinuation
- 1982-02-10 PT PT74410A patent/PT74410B/en unknown
- 1982-02-12 ES ES509565A patent/ES8302387A1/en not_active Expired

Also Published As

Publication number	Publication date
CA1186380A (en)	1985-04-30
FI820393A7 (en)	1982-08-14
ES509565A0 (en)	1982-12-16
PT74410B (en)	1983-10-28
EP0058318B1 (en)	1984-08-08
EP0058318A1 (en)	1982-08-25
FI820393L (en)	1982-08-14
PT74410A (en)	1982-03-01
ES8302387A1 (en)	1982-12-16
DE3105214A1 (en)	1982-09-09
DE3260506D1 (en)	1984-09-13

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Legal Events

Date	Code	Title	Description
1989-04-03	ATS	Application withdrawn