IT1193679B - Interfaccia di linee di dati - Google Patents
Interfaccia di linee di datiInfo
- Publication number
- IT1193679B IT1193679B IT19687/83A IT1968783A IT1193679B IT 1193679 B IT1193679 B IT 1193679B IT 19687/83 A IT19687/83 A IT 19687/83A IT 1968783 A IT1968783 A IT 1968783A IT 1193679 B IT1193679 B IT 1193679B
- Authority
- IT
- Italy
- Prior art keywords
- interface
- data lines
- lines
- data
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/20—Repeater circuits; Relay circuits
- H04L25/24—Relay circuits using discharge tubes or semiconductor devices
-
- 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
- H04L9/40—Network security protocols
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Power Engineering (AREA)
- Communication Control (AREA)
- Dc Digital Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Bidirectional Digital Transmission (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/359,576 US4443884A (en) | 1982-03-18 | 1982-03-18 | Data line interface |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8319687A0 IT8319687A0 (it) | 1983-02-22 |
IT1193679B true IT1193679B (it) | 1988-07-21 |
Family
ID=23414411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT19687/83A IT1193679B (it) | 1982-03-18 | 1983-02-22 | Interfaccia di linee di dati |
Country Status (7)
Country | Link |
---|---|
US (1) | US4443884A (it) |
JP (1) | JPS58170256A (it) |
BR (1) | BR8300973A (it) |
DE (1) | DE3307971A1 (it) |
FR (1) | FR2523744A1 (it) |
GB (1) | GB2118402B (it) |
IT (1) | IT1193679B (it) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4504959A (en) * | 1983-02-25 | 1985-03-12 | Johnson Service Company | Noise-neutralizing digital interface circuit |
JPH0782414B2 (ja) * | 1983-05-24 | 1995-09-06 | 日本電気株式会社 | 情報処理装置 |
BR8401869A (pt) * | 1984-04-23 | 1985-11-26 | Microlab Sa | Repetidor de frequencia de voz |
US4839802A (en) * | 1986-11-19 | 1989-06-13 | Extel Corporation | Adaptation of computer to communication operation |
US4885718A (en) * | 1987-09-11 | 1989-12-05 | Cybex Corporation | Extended communications link for keyboard and display units remotely located from a computer |
US5051980A (en) * | 1988-08-11 | 1991-09-24 | El Paso Natural Gas Company | Data communication interface device |
US4996453A (en) * | 1989-07-28 | 1991-02-26 | Dallas Semiconductor | Power down circuit for low-power circuit with dual supply voltages |
US5619722A (en) * | 1994-01-18 | 1997-04-08 | Teramar Group, Inc. | Addressable communication port expander |
US5841992A (en) * | 1996-03-25 | 1998-11-24 | Snap-On Tools Company | Network-to-serial device intelligent converter |
US6189148B1 (en) | 1999-01-28 | 2001-02-13 | Douglas G. Brown | Methods and circuits using frequency shift keying modulation to transfer data over transmission lines simultaneous with television signals |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR383165A (fr) * | 1907-10-21 | 1908-02-26 | Rowland Telegraphic Company | Mode d'équilibrage des lignes de circuits électriques, applicable en particulier aux lignes employées dans les systèmes de télégraphie «duplex» |
US3691295A (en) * | 1970-03-31 | 1972-09-12 | Ibm | Two-way communication system for video and digital data |
US4086534A (en) * | 1977-02-14 | 1978-04-25 | Network Systems Corporation | Circuit for wire transmission of high frequency data communication pulse signals |
US4277646A (en) * | 1979-08-24 | 1981-07-07 | Western Electric Company, Inc. | Apparatus and method for resetting data sets |
FR2469837A1 (fr) * | 1979-11-07 | 1981-05-22 | Trt Telecom Radio Electr | Dispositif de detection de porteuse dans un modem muni d'un annuleur d'echo |
US4317205A (en) * | 1980-06-13 | 1982-02-23 | Tcl, Inc. | Wideband transceiver with EMI suppression |
US4367374A (en) * | 1981-02-17 | 1983-01-04 | Novation, Inc. | Modem telephone interface circuit |
-
1982
- 1982-03-18 US US06/359,576 patent/US4443884A/en not_active Expired - Fee Related
-
1983
- 1983-01-20 GB GB08301561A patent/GB2118402B/en not_active Expired
- 1983-02-22 IT IT19687/83A patent/IT1193679B/it active
- 1983-02-28 BR BR8300973A patent/BR8300973A/pt unknown
- 1983-03-07 DE DE19833307971 patent/DE3307971A1/de not_active Withdrawn
- 1983-03-08 JP JP58036796A patent/JPS58170256A/ja active Pending
- 1983-03-17 FR FR8304394A patent/FR2523744A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
BR8300973A (pt) | 1983-11-16 |
DE3307971A1 (de) | 1983-09-29 |
JPS58170256A (ja) | 1983-10-06 |
GB8301561D0 (en) | 1983-02-23 |
US4443884A (en) | 1984-04-17 |
GB2118402A (en) | 1983-10-26 |
GB2118402B (en) | 1985-09-04 |
IT8319687A0 (it) | 1983-02-22 |
FR2523744A1 (fr) | 1983-09-23 |
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