IT1055336B - Disposizione circuitale per comandare impianti di trasmissione di da in semiduplex - Google Patents

Disposizione circuitale per comandare impianti di trasmissione di da in semiduplex

Info

Publication number: IT1055336B
Authority: IT; Italy
Prior art keywords: semiduplex; transmission systems; commanding transmission; circuit provision; provision
Prior art date: 1975-02-24

Application number

IT20309/76A

Other languages

English (en)

Original Assignee

Siemens Ag

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.)

1975-02-24

Filing date

1976-02-19

Publication date

1981-12-21

1976-02-19 Application filed by Siemens Ag filed Critical Siemens Ag

1981-12-21 Application granted granted Critical

1981-12-21 Publication of IT1055336B publication Critical patent/IT1055336B/it

Links

230000005540 biological transmission Effects 0.000 title 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Computer Networks & Wireless Communication (AREA)
Computer Security & Cryptography (AREA)
Communication Control (AREA)
Detection And Prevention Of Errors In Transmission (AREA)
Selective Calling Equipment (AREA)
Storage Device Security (AREA)
Bidirectional Digital Transmission (AREA)

IT20309/76A 1975-02-24 1976-02-19 Disposizione circuitale per comandare impianti di trasmissione di da in semiduplex IT1055336B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2507804A DE2507804C1 (de)	1975-02-24	1975-02-24	Schaltungsanordnung zur Steuerung von Halbduplex-Datenuebertragungsanlagen

Publications (1)

Publication Number	Publication Date
IT1055336B true IT1055336B (it)	1981-12-21

Family

ID=5939620

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT20309/76A IT1055336B (it)	1975-02-24	1976-02-19	Disposizione circuitale per comandare impianti di trasmissione di da in semiduplex

Country Status (7)

Country	Link
US (1)	US4329545A (it)
DE (1)	DE2507804C1 (it)
FR (1)	FR2435174A1 (it)
GB (1)	GB1581130A (it)
IT (1)	IT1055336B (it)
NL (1)	NL7601368A (it)
NO (1)	NO144591C (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3207040A1 (de) *	1982-02-26	1983-09-08	Siemens AG, 1000 Berlin und 8000 München	Vefahren und anordnung zum uebertragen von zeichen
US4520232A (en) *	1982-04-30	1985-05-28	Wilson William J	Polygraphic encryption-decryption system
DK159508C (da) *	1982-05-11	1991-03-25	Tandem Computers Inc	Scrambler-koder med pseudotilfaeldigsekvens-generator
US4811394A (en) *	1982-07-28	1989-03-07	Communications Satellite Corporation	Variable starting state scrambling circuit

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2406829A (en) *	1942-06-27	1946-09-03	Western Union Telegraph Co	Telegraph system
US2897268A (en) *	1954-05-05	1959-07-28	Bell Telephone Labor Inc	Cipher telegraph system
US2874215A (en) *	1955-03-23	1959-02-17	Teletype Corp	Two-tape cipher system
US2898402A (en) *	1957-12-06	1959-08-04	William E Cory	Monitor for a teletypewriter
DE1076733B (de) *	1958-05-29	1960-03-03	Telefunken Gmbh	Anordnung zur Sicherstellung des Synchronlaufs der Schluessel-zeichengeneratoren aufder Sende- und Empfangsseite bei der Geheimuebertragung von kodierten Nachrichtensignalen
CH429253A (de) *	1964-01-21	1967-01-31	Europ Handelsges Anst	Mischgerät zum Verschlüsseln und Entschlüsseln von Informationen
DE1462983B2 (de) *	1966-03-11	1971-02-18	Siemens AG, 1000 Berlin u 8000 München	Fernschreibanlage fuer halbduplexbetrieb mit verschluesselten zeichen
US3506783A (en) *	1966-06-17	1970-04-14	Int Standard Electric Corp	Key material generator
US3627928A (en) *	1969-02-04	1971-12-14	Litton Systems Inc	Telegraph privacy system
NO122532B (it) *	1970-01-16	1971-07-12	Standard Tel Kabelfab As
CH506217A (de) *	1970-03-16	1971-04-15	Europ Handelsges Anst	Schaltung für Verschlüsselungsgeräte
US3878331A (en) *	1972-10-20	1975-04-15	Barrie O Morgan	Digital cryptographic system and method

1975
- 1975-02-24 DE DE2507804A patent/DE2507804C1/de not_active Expired
1976
- 1976-02-11 NL NL7601368A patent/NL7601368A/xx not_active Application Discontinuation
- 1976-02-19 IT IT20309/76A patent/IT1055336B/it active
- 1976-02-19 US US05/659,969 patent/US4329545A/en not_active Expired - Lifetime
- 1976-02-20 NO NO760567A patent/NO144591C/no unknown
- 1976-02-23 FR FR7604915A patent/FR2435174A1/fr not_active Withdrawn
- 1976-02-24 GB GB48065/75A patent/GB1581130A/en not_active Expired

Also Published As

Publication number	Publication date
FR2435174A1 (fr)	1980-03-28
NO144591C (no)	1981-09-23
US4329545A (en)	1982-05-11
NO760567L (no)	1979-07-16
GB1581130A (en)	1980-12-10
NO144591B (no)	1981-06-15
DE2507804C1 (de)	1979-11-29
NL7601368A (nl)	1979-09-28

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