IT1043321B - TWO-WIRE DUPLEX TOTAL SYSTEM FOR DATA TRANSMISSION - Google Patents

TWO-WIRE DUPLEX TOTAL SYSTEM FOR DATA TRANSMISSION

Info

Publication number: IT1043321B
Authority: IT; Italy
Prior art keywords: data transmission; total system; wire duplex; duplex total; wire
Prior art date: 1974-10-16

Application number

IT2822575A

Other languages

Italian (it)

Original Assignee

Northern Electric Co

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.)

1974-10-16

Filing date

1975-10-13

Publication date

1980-02-20

1975-10-13 Application filed by Northern Electric Co filed Critical Northern Electric Co

1980-02-20 Application granted granted Critical

1980-02-20 Publication of IT1043321B publication Critical patent/IT1043321B/en

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Physics & Mathematics (AREA)
Spectroscopy & Molecular Physics (AREA)
Computer Networks & Wireless Communication (AREA)
Bidirectional Digital Transmission (AREA)
Synchronisation In Digital Transmission Systems (AREA)
Dc Digital Transmission (AREA)
Sub-Exchange Stations And Push- Button Telephones (AREA)

IT2822575A 1974-10-16 1975-10-13 TWO-WIRE DUPLEX TOTAL SYSTEM FOR DATA TRANSMISSION IT1043321B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA211,515A CA996691A (en)	1974-10-16	1974-10-16	Tow wire, full duplex data transmission system

Publications (1)

Publication Number	Publication Date
IT1043321B true IT1043321B (en)	1980-02-20

Family

ID=4101371

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT2822575A IT1043321B (en)	1974-10-16	1975-10-13	TWO-WIRE DUPLEX TOTAL SYSTEM FOR DATA TRANSMISSION

Country Status (8)

Country	Link
JP (1)	JPS5172201A (en)
CA (1)	CA996691A (en)
DE (1)	DE2546422C2 (en)
FR (1)	FR2331222A1 (en)
GB (1)	GB1522682A (en)
IT (1)	IT1043321B (en)
NL (1)	NL180799C (en)
SE (1)	SE402510B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5474602A (en) *	1977-11-28	1979-06-14	Hitachi Ltd	Photo delivery unit of synchronous type
JPS5814104B2 (en) *	1978-04-28	1983-03-17	株式会社東芝	Information transmission method
US4287596A (en) *	1979-11-26	1981-09-01	Ncr Corporation	Data recovery system for use with a high speed serial link between two subsystems in a data processing system
DE3261985D1 (en) *	1981-02-27	1985-03-07	Bbc Brown Boveri & Cie	Arrangement for decoding a biphase coded signal, as well as utilisation of the arrangement
JPS58151154A (en) *	1982-03-03	1983-09-08	Hitachi Ltd	Transmission system between devices
US4584719A (en) *	1984-08-24	1986-04-22	System Development Corp.	Fiber optic workstation datalink interface

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1216759A (en) *	1968-05-23	1970-12-23	Standard Telephones Cables Ltd	Subscriber subset for p.c.m. telephone system
GB1182363A (en) *	1968-07-26	1970-02-25	Standard Telephones Cables Ltd	Subscriber Subset for PCM Telephone System
GB1229149A (en) *	1969-07-28	1971-04-21
US3637939A (en) *	1970-05-07	1972-01-25	Bell Telephone Labor Inc	Line status control for electronic key telephone system

1974
- 1974-10-16 CA CA211,515A patent/CA996691A/en not_active Expired
1975
- 1975-10-03 GB GB4061475A patent/GB1522682A/en not_active Expired
- 1975-10-03 NL NL7511655A patent/NL180799C/en not_active IP Right Cessation
- 1975-10-13 IT IT2822575A patent/IT1043321B/en active
- 1975-10-15 JP JP12334975A patent/JPS5172201A/en active Pending
- 1975-10-15 FR FR7531587A patent/FR2331222A1/en active Granted
- 1975-10-16 SE SE7511637A patent/SE402510B/en not_active IP Right Cessation
- 1975-10-16 DE DE19752546422 patent/DE2546422C2/en not_active Expired

Also Published As

Publication number	Publication date
NL7511655A (en)	1976-04-21
GB1522682A (en)	1978-08-23
SE7511637L (en)	1976-04-20
FR2331222A1 (en)	1977-06-03
NL180799B (en)	1986-11-17
DE2546422A1 (en)	1976-04-22
NL180799C (en)	1987-04-16
FR2331222B1 (en)	1981-10-09
CA996691A (en)	1976-09-07
JPS5172201A (en)	1976-06-22
DE2546422C2 (en)	1986-12-18
SE402510B (en)	1978-07-03

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