GB1016382A - Improvements in or relating to electrical signalling systems - Google Patents

Improvements in or relating to electrical signalling systems

Info

Publication number
GB1016382A
GB1016382A GB4121862A GB4121862A GB1016382A GB 1016382 A GB1016382 A GB 1016382A GB 4121862 A GB4121862 A GB 4121862A GB 4121862 A GB4121862 A GB 4121862A GB 1016382 A GB1016382 A GB 1016382A
Authority
GB
United Kingdom
Prior art keywords
pulses
tuned circuit
relating
oct
capacitor
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
GB4121862A
Inventor
Geoffrey Francis Croft
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.)
British Telecommunications PLC
British Telecommunications Research Ltd
Original Assignee
British Telecommunications PLC
British Telecommunications Research 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 British Telecommunications PLC, British Telecommunications Research Ltd filed Critical British Telecommunications PLC
Priority to GB4121862A priority Critical patent/GB1016382A/en
Publication of GB1016382A publication Critical patent/GB1016382A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/04—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback
    • H03K3/05—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback
    • H03K3/06—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback using at least two tubes so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/12—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback using at least two tubes so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/13—Bistables with hysteresis, e.g. Schmitt trigger
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

1,016,382. Transistor circuits. BRITISH TELECOMMUNICATION RESEARCH Ltd. Oct. 23, 1963 [Oct. 31, 1962], No. 41218/62. Heading H3T. An arrangement for extracting the basic repetition frequency from a variable binary input having one binary value represented by discrete pulses, and the other by absence of pulses, comprises a capacitor C1 charged at a substantially linear rate in the absence of pulses, and discharged through a tuned circuit L, C during the presence of pulses, whereby the amplitude of oscillation produced is dependent on the interval between pulses. As described, the tuned circuit L, C is arranged to resonate at the expected repetition frequency and the capacitor C1 is discharged through the tuned circuit by applying the pulses at IP to switch on transistor VT.
GB4121862A 1962-10-31 1962-10-31 Improvements in or relating to electrical signalling systems Expired GB1016382A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4121862A GB1016382A (en) 1962-10-31 1962-10-31 Improvements in or relating to electrical signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4121862A GB1016382A (en) 1962-10-31 1962-10-31 Improvements in or relating to electrical signalling systems

Publications (1)

Publication Number Publication Date
GB1016382A true GB1016382A (en) 1966-01-12

Family

ID=10418665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4121862A Expired GB1016382A (en) 1962-10-31 1962-10-31 Improvements in or relating to electrical signalling systems

Country Status (1)

Country Link
GB (1) GB1016382A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404341A1 (en) * 1977-09-26 1979-04-20 Philips Nv DATA PULSE RECEIVER DEVICE
WO1990013177A1 (en) * 1989-04-18 1990-11-01 Boral Johns Perry Industries Pty. Ltd. Circuits with switching protection and parts therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404341A1 (en) * 1977-09-26 1979-04-20 Philips Nv DATA PULSE RECEIVER DEVICE
WO1990013177A1 (en) * 1989-04-18 1990-11-01 Boral Johns Perry Industries Pty. Ltd. Circuits with switching protection and parts therefor
AU631861B2 (en) * 1989-04-18 1992-12-10 Boral Johns Perry Industries Pty Ltd Circuits with switching protection and parts therefor

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