FR945532A - Improvements in relay systems for telephony, television and similar methods of transmitting messages - Google Patents

Improvements in relay systems for telephony, television and similar methods of transmitting messages

Info

Publication number
FR945532A
FR945532A FR945532DA FR945532A FR 945532 A FR945532 A FR 945532A FR 945532D A FR945532D A FR 945532DA FR 945532 A FR945532 A FR 945532A
Authority
FR
France
Prior art keywords
telephony
television
similar methods
transmitting messages
relay systems
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
Other languages
French (fr)
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.)
Cinema Television Ltd
Original Assignee
Cinema Television Ltd
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 Cinema Television Ltd filed Critical Cinema Television Ltd
Application granted granted Critical
Publication of FR945532A publication Critical patent/FR945532A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/17—Ground-based stations employing pulse modulation, e.g. pulse code modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/084—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only
FR945532D 1946-04-30 1947-04-21 Improvements in relay systems for telephony, television and similar methods of transmitting messages Expired FR945532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1305346A GB611639A (en) 1946-04-30 1946-04-30 Improvements in or relating to relaying systems for telephony, television, facsimile and like methods of transmitting intelligence

Publications (1)

Publication Number Publication Date
FR945532A true FR945532A (en) 1949-05-06

Family

ID=10015923

Family Applications (1)

Application Number Title Priority Date Filing Date
FR945532D Expired FR945532A (en) 1946-04-30 1947-04-21 Improvements in relay systems for telephony, television and similar methods of transmitting messages

Country Status (3)

Country Link
DE (1) DE973139C (en)
FR (1) FR945532A (en)
GB (1) GB611639A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003009A2 (en) * 1977-12-22 1979-07-11 Telefonaktiebolaget L M Ericsson A method and an apparatus for transferring digital information in a telephone system

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028176B (en) * 1955-07-04 1958-04-17 Deutsche Bundespost Procedure for the operational control of unmanned radio transmission systems with only one or a few transmission channels
DE1112146B (en) * 1957-06-29 1961-08-03 Rafena Werke Radeberg Vorm Veb Process for the production of two additional telephone channels in television radio links
US3534160A (en) * 1968-11-07 1970-10-13 Philips Corp Color television camera system
NL151874B (en) * 1970-03-13 1976-12-15 Nederlanden Staat CONNECTION SYSTEM FOR TRANSFERRING A BROADBAND SIGNAL FROM A TRANSMITTER TO A RECEIVER.
JPS5034366B1 (en) * 1971-04-30 1975-11-07
JPS5125283B1 (en) * 1971-04-30 1976-07-30
JPS5034367B1 (en) * 1971-04-30 1975-11-07
US3900887A (en) * 1973-01-18 1975-08-19 Nippon Steel Corp Method of simultaneous multiplex recording of picture and data and of regenerating such record and apparatus therefor
DE19544582A1 (en) * 1995-11-30 1997-06-05 Deutsche Telekom Ag Transmission of additional information in unused lines of video signal

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575775C (en) * 1927-04-21 1933-05-03 Siemens & Halske Akt Ges Device for automatic control of the efficiency of transmission systems, especially for picture telegraphy
DE540615C (en) * 1927-04-21 1931-12-23 Siemens & Halske Akt Ges Process for the automatic regulation of the efficiency of transmission systems, especially for wireless telephony
DE700257C (en) * 1929-12-13 1940-12-16 Aeg Pulse frequency method
FR729606A (en) * 1931-01-17 1932-07-28 Siemens Ag Coupling arrangement for automatic adjustment of the electrical level in transmission systems, using control currents transmitted at times
GB460488A (en) * 1935-05-24 1937-01-28 Telefunken Gmbh Improvements in or relating to directional radio receivers
GB470495A (en) * 1935-11-14 1937-08-16 Alan Dower Blumlein Improvements in or relating to multiplex signalling systems
US2106806A (en) * 1936-07-08 1938-02-01 Rca Corp Relay system
US2269692A (en) * 1937-08-31 1942-01-13 Bell Telephone Labor Inc Alarm signaling system
GB509820A (en) * 1937-11-19 1939-07-19 Edmond Maurice Deloraine Improvements in or relating to electric signalling systems
US2287044A (en) * 1940-05-15 1942-06-23 Rca Corp Radio relaying system
BE465456A (en) * 1944-07-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003009A2 (en) * 1977-12-22 1979-07-11 Telefonaktiebolaget L M Ericsson A method and an apparatus for transferring digital information in a telephone system
EP0003009A3 (en) * 1977-12-22 1979-07-25 Telefonaktiebolaget L M Ericsson A method and an apparatus for transferring digital information in a telephone system

Also Published As

Publication number Publication date
GB611639A (en) 1948-11-02
DE973139C (en) 1959-12-10

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