GB611639A - Improvements in or relating to relaying systems for telephony, television, facsimile and like methods of transmitting intelligence - Google Patents

Improvements in or relating to relaying systems for telephony, television, facsimile and like methods of transmitting intelligence

Info

Publication number
GB611639A
GB611639A GB1305346A GB1305346A GB611639A GB 611639 A GB611639 A GB 611639A GB 1305346 A GB1305346 A GB 1305346A GB 1305346 A GB1305346 A GB 1305346A GB 611639 A GB611639 A GB 611639A
Authority
GB
United Kingdom
Prior art keywords
pulses
television
pulse
facsimile
potentials
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
GB1305346A
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
Priority to GB1305346A priority Critical patent/GB611639A/en
Priority to FR945532D priority patent/FR945532A/en
Publication of GB611639A publication Critical patent/GB611639A/en
Priority to DEC3090A priority patent/DE973139C/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Facsimiles In General (AREA)
  • Radio Relay Systems (AREA)

Abstract

611,639. Repeating systems. CINEMATELEVISION, Ltd., GRAHAM, G. E. G., and MORGAN, M. April 30, 1946, No. 13053. [Class 40 (iv)] [Also in Groups XL (b) and XL (c)] Operating conditions at an unattended station for repeating a telephonic, telegraphic, television or facsimile transmission are signalled by pulses during blank intervals in the main transmission. A television repeater comprises an amplifier 2, a modulator 3 and a transmitter 4 and the variables to be monitored are converted into potentials which are applied to the contacts a to d of a mechanical or an electronic switch 7. A pulse generator 8 triggered from a time base 6 generates five pulses 11 to 15, Fig. 2b, during each masking pulse 9, Fig. 2a, and the switch 7 is operated from the same time base 6 so that the amplitude of the pulses 12 to 15, Fig. 2c, transmitted is controlled by the potentials on the contacts a to d respectively. Pulse 11 is a standard pulse. At the receiver, the pulses in the resulting wave train (Fig. 2d) are gated and measured by suitable meters or a display panel.
GB1305346A 1946-04-30 1946-04-30 Improvements in or relating to relaying systems for telephony, television, facsimile and like methods of transmitting intelligence Expired GB611639A (en)

Priority Applications (3)

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
FR945532D FR945532A (en) 1946-04-30 1947-04-21 Improvements in relay systems for telephony, television and similar methods of transmitting messages
DEC3090A DE973139C (en) 1946-04-30 1950-10-03 Method for the transmission of monitoring signals

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
GB611639A true GB611639A (en) 1948-11-02

Family

ID=10015923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1305346A Expired 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

Country Status (3)

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

Cited By (4)

* 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
FR2022810A1 (en) * 1968-11-07 1970-08-07 Philips Nv
FR2088247A1 (en) * 1970-03-13 1972-01-07 Nederlanden Staat

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5034366B1 (en) * 1971-04-30 1975-11-07
JPS5034367B1 (en) * 1971-04-30 1975-11-07
JPS5125283B1 (en) * 1971-04-30 1976-07-30
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
SE404982B (en) * 1977-12-22 1978-11-06 Ericsson Telefon Ab L M METHOD AND DEVICE FOR TRANSMITTING DIGITAL INFORMATION IN A TELEPHONE SYSTEM
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
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
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
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 (4)

* 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
FR2022810A1 (en) * 1968-11-07 1970-08-07 Philips Nv
FR2088247A1 (en) * 1970-03-13 1972-01-07 Nederlanden Staat

Also Published As

Publication number Publication date
FR945532A (en) 1949-05-06
DE973139C (en) 1959-12-10

Similar Documents

Publication Publication Date Title
GB587405A (en) Improvements in or relating to electric signal transmission systems
GB644123A (en) Improvements in television transmission systems
GB611639A (en) Improvements in or relating to relaying systems for telephony, television, facsimile and like methods of transmitting intelligence
GB591884A (en) Pulse communication systems
ES344965A1 (en) System for transmitting information in the prescribed frequency-band
GB1350535A (en) Device for neutralizing fire-control radar
FR2438864A1 (en) Centralised system for remote surveillance of hazards - has several secondary stations connected in parallel onto unique line through interface
US2764754A (en) Electrical remote control and supervisory systems
GB635300A (en) Television transmission system
GB509820A (en) Improvements in or relating to electric signalling systems
GB638336A (en) Improvements in or relating to carrier wave communication systems employing frequency modulations
GB661554A (en) High frequency pre-emphasis for pulse code modulation
GB703247A (en) Improvements in or relating to electric pulse communication systems
GB709901A (en) Regenerative repeater for telegraph signals
FR2287820A1 (en) Telecommunication switching equipment - interconnects transmitters and receivers by generating pseudo random coded signals
GB461749A (en) Improvements in or relating to systems of radio transmission and reception
GB692456A (en) Improvements in or relating to start-stop telegraph repeaters
GB555619A (en) Improvements in electric signal transmission systems
FR1052055A (en) Installation for transmitting and receiving remote control and remote signaling pulses
GB628648A (en) Improvements in or relating to television or like systems
JPS5274788A (en) Transmitter of remote operating device
GB636928A (en) Improvements in or relating to carrier telephony systems
GB723158A (en) Improvements in or relating to non-linear amplifiers
GB362030A (en) Improvements in or relating to carrier wave television systems
GB603440A (en) Telemetering system