GB2006574B - Method of and device for jointly transmitting telephone and video signal on digitaltelephone lines - Google Patents

Method of and device for jointly transmitting telephone and video signal on digitaltelephone lines

Info

Publication number
GB2006574B
GB2006574B GB7839748A GB7839748A GB2006574B GB 2006574 B GB2006574 B GB 2006574B GB 7839748 A GB7839748 A GB 7839748A GB 7839748 A GB7839748 A GB 7839748A GB 2006574 B GB2006574 B GB 2006574B
Authority
GB
United Kingdom
Prior art keywords
digitaltelephone
lines
video signal
transmitting telephone
jointly transmitting
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
Application number
GB7839748A
Other versions
GB2006574A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telecom Italia SpA
Original Assignee
CSELT Centro Studi e Laboratori Telecomunicazioni SpA
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.)
Filing date
Publication date
Application filed by CSELT Centro Studi e Laboratori Telecomunicazioni SpA filed Critical CSELT Centro Studi e Laboratori Telecomunicazioni SpA
Publication of GB2006574A publication Critical patent/GB2006574A/en
Application granted granted Critical
Publication of GB2006574B publication Critical patent/GB2006574B/en
Expired legal-status Critical Current

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
    • H04M11/064—Data transmission during pauses in telephone conversation
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Television Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
GB7839748A 1977-10-20 1978-10-09 Method of and device for jointly transmitting telephone and video signal on digitaltelephone lines Expired GB2006574B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69348/77A IT1091286B (en) 1977-10-20 1977-10-20 PROCEDURE AND DEVICE FOR JOINT TRANSMISSION OF TELEPHONE SIGNALS AND VIDEO SIGNALS ON NUMERICAL TELEPHONE LINES

Publications (2)

Publication Number Publication Date
GB2006574A GB2006574A (en) 1979-05-02
GB2006574B true GB2006574B (en) 1982-02-10

Family

ID=11311934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7839748A Expired GB2006574B (en) 1977-10-20 1978-10-09 Method of and device for jointly transmitting telephone and video signal on digitaltelephone lines

Country Status (6)

Country Link
JP (1) JPS5821460B2 (en)
DE (1) DE2845023C2 (en)
FR (1) FR2406920A1 (en)
GB (1) GB2006574B (en)
IT (1) IT1091286B (en)
SE (1) SE439564B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330858A (en) * 1979-06-29 1982-05-18 International Business Machines Corporation Time domain supervisory channel for data terminal equipments
DE3044657A1 (en) * 1980-11-27 1982-07-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt "SERVICE-INTEGRATED DIGITAL TRANSMISSION SYSTEM"
US4528659A (en) * 1981-12-17 1985-07-09 International Business Machines Corporation Interleaved digital data and voice communications system apparatus and method
JPS60172852A (en) * 1984-02-17 1985-09-06 Nec Corp Multiplex system
GB2162022B (en) * 1984-07-17 1988-03-02 Stc Plc Data transmission system
JPS62144658U (en) * 1986-03-07 1987-09-11
JPS637047A (en) * 1986-06-27 1988-01-12 Nec Corp Multimedia cummunication method and its transmitter/ receiver
EP0258514B1 (en) * 1986-08-27 1992-05-06 International Business Machines Corporation Optimized bandwidth allocation apparatus between circuit slots and packet bit stream in a communication network
EP0257168B1 (en) * 1986-08-27 1992-06-03 International Business Machines Corporation Pseudo synchronous transportation apparatus in a communication network
JPH0639490U (en) * 1992-11-02 1994-05-27 谷川商事株式会社 Writing instrument having a seal and a correction stamp
FI103700B (en) 1994-09-20 1999-08-13 Nokia Mobile Phones Ltd Simultaneous transmission of voice and data in mobile telecommunication systems
GB2294614B (en) 1994-10-28 1999-07-14 Int Maritime Satellite Organiz Communication method and apparatus
JP3043348U (en) * 1997-05-12 1997-11-18 清二 大田 Stamp with correction stamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2157143A5 (en) * 1971-10-19 1973-06-01 Queffeulou Jean Yves
JPS5232804B2 (en) * 1972-09-04 1977-08-24
CH577253A5 (en) * 1974-05-17 1976-06-30 Ibm

Also Published As

Publication number Publication date
SE439564B (en) 1985-06-17
IT1091286B (en) 1985-07-06
JPS5462706A (en) 1979-05-21
FR2406920A1 (en) 1979-05-18
FR2406920B1 (en) 1982-04-16
GB2006574A (en) 1979-05-02
DE2845023A1 (en) 1979-05-03
JPS5821460B2 (en) 1983-04-30
DE2845023C2 (en) 1982-09-09
SE7810581L (en) 1979-04-21

Similar Documents

Publication Publication Date Title
JPS535926A (en) Method and device for transmitting and*or recording color television signal
JPS53114413A (en) Method and device for transmitting or recording digital signal
GB1553591A (en) Device for and method of determining the transmission quality of received signals
JPS54105904A (en) Method of and device for distributing telephone call
GB2007465B (en) Method and device for extruding a synchronizing signal from an incoming pcm signal
JPS5757056A (en) Method and device for synchronizing digital signal
JPS546411A (en) Method of and circuit for transmitting distress call signal and information
JPS542613A (en) Method of and device for cancelling interference between signals
JPS5433610A (en) Method of and device for transmitting in signal and fleming types of tdm communication system
GB2006574B (en) Method of and device for jointly transmitting telephone and video signal on digitaltelephone lines
JPS542614A (en) Method of and device for reducing interference between signals
JPS5461914A (en) Video signal recording method and device
JPS54100624A (en) Method of and device for converting video signal
GB2008892B (en) Video signal recording and reproding and apparatus and metthod
JPS54100208A (en) Device for and method of preliminarily connecting digital signal transmission line
JPS5430386A (en) Method of and device for transmitting data
JPS57122586A (en) Method and device for transmitting signal
JPS54118209A (en) Method of and device for recording video signal
JPS53115123A (en) Method of and device for transmitting facsimile picture
JPS53114412A (en) Method and device for transmitting and recording digital signal
JPS53142817A (en) Method of and device for digitizing video signal
JPS5525898A (en) Method and device for recording video signal
JPS5550789A (en) Method of and device for transmitting television audio signal
JPS5797283A (en) Signal transmitting method and device used therefor
JPS5597769A (en) Method of and device for talking via plural different telephone sets

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee