GB634292A - Regenerating system for start-stop telegraphic signals - Google Patents

Regenerating system for start-stop telegraphic signals

Info

Publication number
GB634292A
GB634292A GB10142/45A GB1014245A GB634292A GB 634292 A GB634292 A GB 634292A GB 10142/45 A GB10142/45 A GB 10142/45A GB 1014245 A GB1014245 A GB 1014245A GB 634292 A GB634292 A GB 634292A
Authority
GB
United Kingdom
Prior art keywords
received signal
fed
relay
oscillator
line
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
GB10142/45A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB634292A publication Critical patent/GB634292A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/202—Repeater circuits; Relay circuits using mechanical devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/24—Relay circuits using discharge tubes or semiconductor devices
    • H04L25/242—Relay circuits using discharge tubes or semiconductor devices with retiming
    • H04L25/245—Relay circuits using discharge tubes or semiconductor devices with retiming for start-stop signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

634,292. Type-printing telegraphy. PELLE, P. April 23, 1945, No. 10142. Convention date, Feb. 10, 1944. [Class 40 (iii)] In a regenerator for stop-start telegraph signals of two polarities, a valve oscillator starts to oscillate on the receipt of a start signal and causes short D.C. impulses to be fed to the line relay at the theoretical centre of each received signal impulse, the received signal being used to determine the polarity re-transmitted. An incoming start signal of negative polarity on line L1 energizes coil 1 of the polarized differential relay RE and moves its armature i1, i2 to contacts t1, t2. At t1, the oscillator O is caused to oscillate with a period equal to a unitary signal element, and the train of oscillations produced is passed to a triodepentode flip-flop circuit I via a phase-changing capacity-resistance net 5, 6 and 7. The pentode produces a square-wave pulse at the peak of each oscillation received, i.e. at the theoretical centre of each received signal impulse. These pulses are fed to the line-relay R via a staticrelay network 11, 12, 13, 14, the biassing of the static-relays by the received signal determining the direction in which the transmitting armature i3 moves. The pentode output pulses are also fed to an impulse counter CI where they charge condenser 3 until atthe seventh (or stop) pulse the grid potential causes the tube to discharge via coil 2 of the differential relay RE, thereby returning the armatures to their rest contacts r1, r2 and locking the oscillator O, ready for the next character.
GB10142/45A 1944-02-10 1945-04-23 Regenerating system for start-stop telegraphic signals Expired GB634292A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR989180T 1944-02-10

Publications (1)

Publication Number Publication Date
GB634292A true GB634292A (en) 1950-03-15

Family

ID=9540060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10142/45A Expired GB634292A (en) 1944-02-10 1945-04-23 Regenerating system for start-stop telegraphic signals

Country Status (5)

Country Link
US (1) US2474490A (en)
CH (1) CH256710A (en)
FR (1) FR989180A (en)
GB (1) GB634292A (en)
NL (1) NL77140C (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL80445C (en) * 1947-01-16
BE488187A (en) * 1948-04-01
GB655728A (en) * 1948-06-14 1951-08-01 British Telecomm Res Ltd Improvements in or relating to regenerative telegraph repeaters
NL88793C (en) * 1948-07-23
GB657071A (en) * 1948-10-15 1951-09-12 His Majesty S Postmaster Gener Improvements in or relating to electronic regenerative repeaters for start-stop telegraph systems
US2611034A (en) * 1948-11-26 1952-09-16 Gene L Brewer Electronic diplex keyer
US2785225A (en) * 1949-02-18 1957-03-12 Bell Telephone Labor Inc Electronic regenerative repeater
NL81591C (en) * 1949-11-29 1956-06-15
US2732428A (en) * 1950-01-17 1956-01-24 -anode valve vyb
NL85009C (en) * 1950-06-30
US2685613A (en) * 1952-01-14 1954-08-03 Rca Corp Code signal regenerator
NL175255B (en) * 1952-02-08 Corporate Foods METHOD OF MAKING MOLDED POTATO PRODUCTS.
US3246243A (en) * 1962-04-05 1966-04-12 Ericsson Telefon Ab L M Regenerative pulse transmission circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2133456A (en) * 1936-02-15 1938-10-18 Bell Telephone Labor Inc Regenerative telegraph repeater
US2357840A (en) * 1941-02-25 1944-09-12 American Telephone & Telegraph Regenerative telegraph repeater

Also Published As

Publication number Publication date
FR989180A (en) 1951-09-05
US2474490A (en) 1949-06-28
NL77140C (en)
CH256710A (en) 1948-08-31

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