GB703247A - Improvements in or relating to electric pulse communication systems - Google Patents

Improvements in or relating to electric pulse communication systems

Info

Publication number
GB703247A
GB703247A GB1245150A GB1245150A GB703247A GB 703247 A GB703247 A GB 703247A GB 1245150 A GB1245150 A GB 1245150A GB 1245150 A GB1245150 A GB 1245150A GB 703247 A GB703247 A GB 703247A
Authority
GB
United Kingdom
Prior art keywords
pulse
channel
carrier
frequency
pulses
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
GB1245150A
Inventor
Charles William Earp
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority to NL87566D priority Critical patent/NL87566C/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1245150A priority patent/GB703247A/en
Priority to FR1047174D priority patent/FR1047174A/en
Publication of GB703247A publication Critical patent/GB703247A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0617—Systems characterised by the synchronising information used the synchronising signal being characterised by the frequency or phase

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

703,247. Multiplex pulse signalling. STANDARD TELEPHONES & CABLES, Ltd. May 18, 1950, No. 12451/50. Drawings to Specification. Class 40 (5) A pulse train, comprising a plurality of interlaced channel pulse trains, frequency modulates a carrier wave which is periodically interrupted at the channel pulse recurence frequency to provide synchronizing signals. In the transmitter described, a delay line distributer provides channel pulses which are subsequently amplitude modulated, combined and used to frequency modulate a carrier. The distributer also produces synchronizing pulses which are used to block an amplifier between the modulated carrier source and the output stages of the transmitter, Fig. 1 not shown). At a receiver adapted to select any one channel signal, a carrier rectifier provides a pulse for each gap in the incoming carrier wave, the pulse being passed through a delay device having suitable manual settings, to unblock a normally blocked amplifier preceding the discriminator circuit at times appropriate to the channel pulses selected, Fig. 2 (not shown). Specifications 600,272 and 703,254 are referred to.
GB1245150A 1950-05-18 1950-05-18 Improvements in or relating to electric pulse communication systems Expired GB703247A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL87566D NL87566C (en) 1950-05-18
GB1245150A GB703247A (en) 1950-05-18 1950-05-18 Improvements in or relating to electric pulse communication systems
FR1047174D FR1047174A (en) 1950-05-18 1951-05-18 Electrical impulse communication systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1245150A GB703247A (en) 1950-05-18 1950-05-18 Improvements in or relating to electric pulse communication systems

Publications (1)

Publication Number Publication Date
GB703247A true GB703247A (en) 1954-02-03

Family

ID=10004842

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1245150A Expired GB703247A (en) 1950-05-18 1950-05-18 Improvements in or relating to electric pulse communication systems

Country Status (3)

Country Link
FR (1) FR1047174A (en)
GB (1) GB703247A (en)
NL (1) NL87566C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985834A (en) * 1954-07-12 1961-05-23 Int Standard Electric Corp Amplitude sampling arrangement for pulse code modulation
EP0369917A2 (en) * 1988-11-18 1990-05-23 France Telecom Method for broadcasting digital data, especially towards mobile stations, with a high bit rate, with time-frequency interleaving and analogous synchronisation
US5191576A (en) * 1988-11-18 1993-03-02 L'Etat Francais and Telediffusion de France S.A. Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985834A (en) * 1954-07-12 1961-05-23 Int Standard Electric Corp Amplitude sampling arrangement for pulse code modulation
EP0369917A2 (en) * 1988-11-18 1990-05-23 France Telecom Method for broadcasting digital data, especially towards mobile stations, with a high bit rate, with time-frequency interleaving and analogous synchronisation
FR2639495A1 (en) * 1988-11-18 1990-05-25 France Etat METHOD FOR DIFFUSION OF DIGITAL DATA, IN PARTICULAR FOR HIGH-SPEED MOVING BROADCAST, TIME-FREQUENCY INTERLACING, AND ANALOG SYNCHRONIZATION
EP0369917A3 (en) * 1988-11-18 1990-11-28 Etat Francais Represente Par Le Ministre Des Ptt (Centre National D'etudes Des Telecommunications) Method for broadcasting digital data, especially towards mobile stations, with a high bit rate, with time-frequency interleaving and analogous synchronisation
US5191576A (en) * 1988-11-18 1993-03-02 L'Etat Francais and Telediffusion de France S.A. Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization

Also Published As

Publication number Publication date
FR1047174A (en) 1953-12-11
NL87566C (en)

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