LU65853A1 - - Google Patents
Info
- Publication number
- LU65853A1 LU65853A1 LU65853A LU65853DA LU65853A1 LU 65853 A1 LU65853 A1 LU 65853A1 LU 65853 A LU65853 A LU 65853A LU 65853D A LU65853D A LU 65853DA LU 65853 A1 LU65853 A1 LU 65853A1
- Authority
- LU
- Luxembourg
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2139546A DE2139546B2 (de) | 1971-08-06 | 1971-08-06 | Schaltungsanordnung für Fernsprechanlagen mit zusätzlichem Datenverkehr zwischen den einzelnen Teilnehmerstellen und einer zentraler! Datenverarbeitungsanlage |
| US27751072A | 1972-08-03 | 1972-08-03 | |
| US05/549,497 US4001507A (en) | 1971-08-06 | 1975-02-12 | Method and apparatus for telephone systems for facilitating data traffic between the subscriber stations and a central data processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU65853A1 true LU65853A1 (sv) | 1973-01-15 |
Family
ID=27183618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU65853A LU65853A1 (sv) | 1971-08-06 | 1972-08-04 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4001507A (sv) |
| AT (1) | AT323814B (sv) |
| BE (1) | BE787246A (sv) |
| CH (1) | CH549915A (sv) |
| DE (1) | DE2139546B2 (sv) |
| FR (1) | FR2149804A5 (sv) |
| GB (1) | GB1393777A (sv) |
| LU (1) | LU65853A1 (sv) |
| NL (1) | NL7210469A (sv) |
| SE (1) | SE389407B (sv) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253157A (en) * | 1978-09-29 | 1981-02-24 | Alpex Computer Corp. | Data access system wherein subscriber terminals gain access to a data bank by telephone lines |
| JPS561653A (en) * | 1979-06-19 | 1981-01-09 | Hitachi Ltd | Aural reply system |
| US4652700A (en) * | 1979-11-26 | 1987-03-24 | Vmx, Inc. | Electronic audio communications system with versatile user accessibility |
| EP0187945B1 (de) * | 1985-01-17 | 1991-03-20 | Siemens Aktiengesellschaft | Verfahren zur Zeichenübertragung zwischen einer Datenverarbeitungsanlage und einer Fernsprechvermittlungsanlage, insbesondere einer Fernsprechnebenstellenanlage |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3153121A (en) * | 1960-09-01 | 1964-10-13 | Automatic Elect Lab | Airport multi-language announcing system |
| US3344401A (en) * | 1963-03-15 | 1967-09-26 | Burroughs Corp | Inquiry system |
| US3431362A (en) * | 1966-04-22 | 1969-03-04 | Bell Telephone Labor Inc | Voice-excited,bandwidth reduction system employing pitch frequency pulses generated by unencoded baseband signal |
| US3507997A (en) * | 1966-08-22 | 1970-04-21 | Robert H Weitbrecht | Frequency-shift teletypewriter |
| US3529088A (en) * | 1967-05-02 | 1970-09-15 | Werner Hauer | Multiplex voice and data transmission system |
| US3732541A (en) * | 1970-04-27 | 1973-05-08 | Licentia Gmbh | Method and apparatus for evaluating repetitively transmitted signals |
| US3641500A (en) * | 1970-06-30 | 1972-02-08 | Ibm | Voice entry system |
| US3694811A (en) * | 1971-01-04 | 1972-09-26 | Technitrend Inc | Query and response system with audio message synthesizing |
-
0
- BE BE787246D patent/BE787246A/xx unknown
-
1971
- 1971-08-06 DE DE2139546A patent/DE2139546B2/de not_active Ceased
-
1972
- 1972-07-10 CH CH1032572A patent/CH549915A/xx not_active IP Right Cessation
- 1972-07-14 AT AT610672A patent/AT323814B/de not_active IP Right Cessation
- 1972-07-28 NL NL7210469A patent/NL7210469A/xx not_active Application Discontinuation
- 1972-08-01 FR FR7227649A patent/FR2149804A5/fr not_active Expired
- 1972-08-04 SE SE7210217A patent/SE389407B/sv unknown
- 1972-08-04 LU LU65853A patent/LU65853A1/xx unknown
- 1972-08-07 GB GB3675972A patent/GB1393777A/en not_active Expired
-
1975
- 1975-02-12 US US05/549,497 patent/US4001507A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4001507A (en) | 1977-01-04 |
| BE787246A (fr) | 1973-02-05 |
| SE389407B (sv) | 1976-11-01 |
| AT323814B (de) | 1975-07-25 |
| DE2139546A1 (de) | 1973-02-15 |
| DE2139546B2 (de) | 1974-04-18 |
| CH549915A (de) | 1974-05-31 |
| FR2149804A5 (sv) | 1973-03-30 |
| NL7210469A (sv) | 1973-02-08 |
| GB1393777A (en) | 1975-05-14 |