GB1277535A - Improvements in or relating to multiple data sets - Google Patents
Improvements in or relating to multiple data setsInfo
- Publication number
- GB1277535A GB1277535A GB58588/70A GB5858870A GB1277535A GB 1277535 A GB1277535 A GB 1277535A GB 58588/70 A GB58588/70 A GB 58588/70A GB 5858870 A GB5858870 A GB 5858870A GB 1277535 A GB1277535 A GB 1277535A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- processor
- receiver
- frequency
- signals
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000003134 recirculating effect Effects 0.000 abstract 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
- H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Interface Circuits In Exchanges (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Time-Division Multiplex Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US88425169A | 1969-12-11 | 1969-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1277535A true GB1277535A (en) | 1972-06-14 |
Family
ID=25384264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB58588/70A Expired GB1277535A (en) | 1969-12-11 | 1970-12-10 | Improvements in or relating to multiple data sets |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3649759A (enExample) |
| JP (1) | JPS5225682B1 (enExample) |
| BE (1) | BE760137A (enExample) |
| DE (1) | DE2060374C3 (enExample) |
| ES (1) | ES386681A1 (enExample) |
| FR (1) | FR2073461B1 (enExample) |
| GB (1) | GB1277535A (enExample) |
| NL (1) | NL171514C (enExample) |
| SE (1) | SE367109B (enExample) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3806649A (en) * | 1969-12-01 | 1974-04-23 | Hitachi Ltd | Communication switching system provided with video signal generating means |
| US3715496A (en) * | 1971-10-21 | 1973-02-06 | Ibm | Digital band-pass filter for a single circuit full duplex transmission system |
| US3869577A (en) * | 1972-04-24 | 1975-03-04 | Gen Datacomm Ind Inc | Method and apparatus for control signaling in fdm system |
| US3967250A (en) * | 1972-05-22 | 1976-06-29 | Kokusai Denshin Denwa Kabushiki Kaisha | Control system of an electronic exchange |
| US3889062A (en) * | 1972-10-02 | 1975-06-10 | Action Communication Systems I | System and method for coupling remote data terminals via telephone lines |
| US3879579A (en) * | 1973-03-21 | 1975-04-22 | Mi 2 Inc | Automatic direct access arrangement selector |
| US3869578A (en) * | 1973-03-28 | 1975-03-04 | Action Communication Systems I | Communications processor system having a time shared communications control device and modem |
| US4425664A (en) | 1975-11-26 | 1984-01-10 | Bell Telephone Laboratories, Incorporated | Multiport programmable digital data set |
| JPS56157996U (enExample) * | 1980-04-23 | 1981-11-25 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US25911A (en) * | 1859-10-25 | Car-brake | ||
| US3133268A (en) * | 1959-03-09 | 1964-05-12 | Teleregister Corp | Revisable data storage and rapid answer back system |
| US3042752A (en) * | 1959-05-25 | 1962-07-03 | Bell Telephone Labor Inc | Failure detecting apparatus |
| US3341818A (en) * | 1964-06-30 | 1967-09-12 | Ibm | Plural line scanner |
| DE1288626B (de) * | 1966-05-28 | 1969-02-06 | Nippon Electric Co | Automatische Geraeteabschaltanordnung fuer einen Fernempfaenger |
| US3526878A (en) * | 1967-03-27 | 1970-09-01 | Burroughs Corp | Digital computer system |
| US3522381A (en) * | 1967-12-13 | 1970-07-28 | Bell Telephone Labor Inc | Time division multiplex switching system |
-
1969
- 1969-12-11 US US884251A patent/US3649759A/en not_active Expired - Lifetime
-
1970
- 1970-12-03 SE SE16366/70A patent/SE367109B/xx unknown
- 1970-12-08 DE DE2060374A patent/DE2060374C3/de not_active Expired
- 1970-12-09 ES ES386681A patent/ES386681A1/es not_active Expired
- 1970-12-10 GB GB58588/70A patent/GB1277535A/en not_active Expired
- 1970-12-10 FR FR707044598A patent/FR2073461B1/fr not_active Expired
- 1970-12-10 NL NLAANVRAGE7018057,A patent/NL171514C/xx not_active IP Right Cessation
- 1970-12-10 BE BE760137A patent/BE760137A/xx not_active IP Right Cessation
- 1970-12-11 JP JP45110016A patent/JPS5225682B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2060374A1 (de) | 1971-06-16 |
| US3649759A (en) | 1972-03-14 |
| NL7018057A (enExample) | 1971-06-15 |
| FR2073461B1 (enExample) | 1973-02-02 |
| FR2073461A1 (enExample) | 1971-10-01 |
| BE760137A (fr) | 1971-05-17 |
| ES386681A1 (es) | 1974-02-01 |
| JPS5225682B1 (enExample) | 1977-07-09 |
| DE2060374C3 (de) | 1978-11-30 |
| DE2060374B2 (de) | 1978-03-23 |
| NL171514C (nl) | 1983-04-05 |
| NL171514B (nl) | 1982-11-01 |
| SE367109B (enExample) | 1974-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4066848A (en) | Telephone ring detector circuit | |
| GB1277535A (en) | Improvements in or relating to multiple data sets | |
| US3927264A (en) | Dial pulse detector and method | |
| US4626628A (en) | Telephone line circuit having time-shared DTMF receivers | |
| US4207433A (en) | Test arrangement for communication paths in time-division multiplexed switching systems | |
| US3763324A (en) | Tone detector system | |
| US3517129A (en) | Data transmission subset | |
| JPS6117179B2 (enExample) | ||
| EP0269296B1 (en) | Dial tone detector | |
| JPS62257257A (ja) | 電話回線切換制御装置 | |
| US4286119A (en) | Arrangement for concentrating pulse code modulation processing circuits in a digital telephone office | |
| ES443673A1 (es) | Una disposicion de interconexion telefonica. | |
| US4293738A (en) | Analog access arrangement for a digital telephone office | |
| SU1676110A1 (ru) | Устройство формировани управл ющих сигналов в системах автоматической телефонной св зи | |
| JPS54158106A (en) | Incoming switch system to telephone set equipment or picture communication equipment in telephone circuit | |
| JPS6115453A (ja) | 被呼者応答検出回路方式 | |
| GB1522663A (en) | Data modems with automatic equalization drop-out detection and data echo protection | |
| CA1216690A (en) | Telephone line circuit having time-shared dtmf receivers | |
| JP2726437B2 (ja) | 電話通信機 | |
| KR880006608A (ko) | 모뎀 및 전화선을 이용한 컴퓨터 주변기기에서 통화중음 감지장치 및 방법 | |
| JPS5539410A (en) | Increasing method of transmission efficiency for data communication | |
| JPS5630355A (en) | Call selection system of terminal equipment | |
| JPS57194658A (en) | Guard terminal device | |
| JPS59160365A (ja) | 自動応答検出装置 | |
| JPS5643860A (en) | Signal discrimination system of circuit terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |