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US2747023A - Marker impulse generator for signalling systems - Google Patents

Marker impulse generator for signalling systems Download PDF

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Publication number
US2747023A
US2747023A US30164752A US2747023A US 2747023 A US2747023 A US 2747023A US 30164752 A US30164752 A US 30164752A US 2747023 A US2747023 A US 2747023A
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switching means
terminals
group
impulse
groups
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Hagenhaus Kurt
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Siemens and Halske AG
Siemens AG
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Siemens AG
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
    • C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
    • C07D239/47—One nitrogen atom and one oxygen or sulfur atom, e.g. cytosine
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
    • C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
    • C07D239/48—Two nitrogen atoms
    • C07D239/49—Two nitrogen atoms with an aralkyl radical, or substituted aralkyl radical, attached in position 5, e.g. trimethoprim
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/04—Distributors combined with modulators or demodulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation

Definitions

  • This invention is concerned with an impulse generator for producing successive current impulses serving as marker impulses in a signalling system, for example, in a telephone system.
  • One of the objects of the invention is to provide a marker impulse generator device which has a relatively small number of circuit closure or switching means as compared with t e number of outlets serving for the utilization of the ma her impulses produced.
  • This object is a. Zed by the coordinate cooperation of successively operable circuit closure or switching means combined t a first group, which are repeatedly operable in a certain time sequence, with a second group of circuit closure or switching means which are successively operated, each during a cycle of operation of the means of the first group, for the purpose of connecting potentials to outlets or impulse receiving terminals serving for receiving the corresponding marked impulses.
  • the circuit closure or switching means may be contacts or electr nic tubes.
  • a coincidence circuit may be connected with each impulse receiving terminal comprising, for example, a rectifier, for producing an impulse at the corresponding terminal upon coincident actuation of the switching means in said first and said second groups.
  • the impulse generator illustrated in Pig. 1 comprises a first group of contacts P1 P23, only four of these contacts being shown for convenience, which are suitably actuated, for example, by cams on a rotating shaft (not shown), and a second group of similarly actuated contacts Pzi Pz1s, of which only five are shown for convenience.
  • the contacts P1 P23 in the first group are in a predetermined rhythm actuated from their normal positions in which they are shown to their operated positions, while the contacts Pzi Pa: in the second group are similarly actuated, but in another rhythm.
  • the time t contact closure is such that the contacts P1 P23 are successively actuated to their operated positions, each contact once, du ing the time when any one contact PZl Pzis is l its operated position.
  • contacts P1 .Pzs will be successively actuated. This cycle is repeated with contact P22 in operated position after restoration of contact Pz1, etc.
  • the contacts are connected in a. working circuit over the impulse receivin terminals and cooperate in coordinate fashion.
  • Such current impulses will therefore occur at the rker impulse outlet or receiving terrninals or points P11 P123 coincident with the successive actuation of the contacts P1 P23, and thereafter in the indicated rhythm also at the marker impulse outlet or receiving terminals or points Pll1 PXlllzs responsive to successive operation of the contacts Pza Pzis.
  • a potential of ten volt-s will thus be connected in impulse fashion to the marker impulse receiving points or terminals P11 PXIIIzs, each at a difierent instant, thus matting available 299 marker impulses.
  • the numer of outlets or impulse receiving points or terminals is equal to the product of the number of contacts in the first group and the number of contacts in the second group.
  • the marker impulse receiving terminals are subdivided into a number of groups which corresponds to the number of contacts in the second group.
  • the impulse generator shown in Fig. 2 has electronic circuit closure or switching means in place of the contacts l 1 P23 of the embodiment of Fig. 1, namely, the tubes R01 R023.
  • the inlet leads E1 E23 connect with a suitable impulse device (not shown) which is adapted to transmit 23 impulses which are displaced as to time.
  • the contacts Pz1 Pan with their associated marker impulse outlets are multipled, and each multiple is switched in successively by auxiliary contacts such as Pm PWlO.
  • the number of marker impulse outlets or r DCvin terminals can in this fashion be increased to .rPii .rPXlllas.
  • the tubes R01 R023 Upon becoming conductive responsive to receiving the initiating impulses over their associated leads E1 E23, the tubes R01 R023 deliver successive impulses over their respective coating transformers T1 T23 which are connected to the anode circuits thereof for blocking the rectifiers in the corresponding circuits in the same manner as such blocking was effected by the cam-controlled contacts P1 P23 of Fi l. Successive current impulses are therefore produced at the marker impulse receiving terminals P11 xPXll'lzs just like in the embodiment according to Fig. 1. Corresponding marker impulse receiving terminals of the various groups of Fig. 2 are connected over auxiliary rectifiers Gz. If such rectifiers were not provided, there would occur an undesirably great load on account of the rectifiers Ga which are in parallel circuit on the marker impulse outlets.
  • switching means or similar language as used in the appended claims is intended to embrace contact means such as the contact shown in Fig. l and also switching means including electronic means such as shown in Fig. 2.
  • An impulse generator comprising a plurality of ups of impulse receiving terminals each group comprising several terminals, a plurality of first switching means corresponding in number to the number of terminals in each group of terminals, circuit means for connecting several of said terminals with each of said first switching means, said circuit means comprising current control means for each terminal, a plurality of second switching means corresponding in number to the number of groups or" said terminals, each of said second switching means being individual to one of said group of terminals, resistor means connected with each terminal in each group of terminals, means for connecting said resistor means in each group of terminals in multiple to the second switching means which is individual thereto, means for repeatedly sequentially and cyclically operating said first switching means, and means for actuating one of said second switching means during each cyclic operation of all of said first switching means for coordinating the operations of said first switching means with the operation of said second switching means to produce successively individual impulses at said impulse receiving terminals.
  • An impulse generator comprising a plurality of groups of impulse receiving terminals each group comprising several terminals, a plurality of first switching means corresponding in number to the number of terminals in each group of terminals, circuit means for connecting several of said terminals with each of said first switching means, said circuit means comprising current control means for each terminal, a plurality of second switching means corresponding in number to the number of groups of said terminals, each of said second switching means being individual to one of said group of terminals, resistor means connected with each terminal in each group of terminals, means for connecting said resistor means in each group of terminals in multiple to the second switching means which is individual thereto, means for repeatedly and cyclically operating said first switching means, and means for actuating one of said second switching means during each cyclic operation of all of said first switching means for coordinating the operations of said first switching means with the operation of said second switching means, said second switching means connecting a predetermined potential over said multipled resistor means to the respectively associated impulse receiving terminals and said first switching means connecting an opposing potential to said impulse receiving terminal
  • An impulse generator comprising a plurality of groups of impulse receiving terminals each group comprising several terminals, a plurality of first switching means corresponding in number to the number of terminals in each group of terminals, circuit means for connecting several of said terminals with each of said first switching means, said circuit including rectifier means for each terinal, a plurality of second switching means corresponding in number to the number of groups of said terminals, each of said second switching means being individual to one of said group of terminals, resistor means connected with each terminal in each group of terminals, means for connecting said resistor means in each group of terminals in multiple to the second switching means which is individual thereto, means for repeatedly and cyclically operating said first switching means, and means for actuating one of said second switching means during each cyclic Operation of all of said first switching means for coordinating the operations of said first switching means with the operation of said second switching means, said second switching means connecting a predetermined potential over said multipled resistor means to the respectively associated impulse receiving terminals and said first switching means connecting an opposing potential to said impulse receiving
  • An impulse generator comprising a plurality of groups of impulse receiving terminals each group comprising several terminals, a plurality of first switching means corresponding in number to the number of impulse receiving terminals in each of said groups of terminals, a plurality of second switching means corresponding in numher to the number of groups of said terminals, each of said second switching means being individual to one of said group of terminals, resistor means connected with each terminal in each group of said terminals, means for connecting said resistor means in each group of terminals in multiple to the second switching means which is individual thereto, rectifier means connected with each terminal in each group of said terminals, circuit means for connecting with each of said first switching means at least one terminal in each of said groups of terminals over the rectifier means respectively associated therewith, means tor successively individually operating each of said second switching means for a predetermined time interval to connect during such interval a predetermined potential to the resistor means respectively multiply connected with the corresponding second switching means, and means for successively operating all of said first switching means during each operating interval of said second switching means to connect a
  • An impulse generator according to claim 1, comprising electronic switching means constituting said first switching means.
  • An impulse generator comprising a plurality of groups of impulse receiving terminals disposed subdivided in a plurality of groups each comprising a predetermined number of terminals, a plurality of electronic switching means constituting first switching means in number corresponding to the number of terminals in each of said groups, circuit means for connecting corresponding terminals of different of said groups with predetermined individual electronic switching means, rectifier means in said circuit means, a plurality of second switching means respectively individual to said groups of terminals, means for connecting the respective second switching means with the corresponding groups of terminals, means for repeatedly sequentially and cyclically operating said electronic switching means, and means for actuating one of said second switching means during each cyclic operation of said electronic switching means for coordinating the operations of said electronic switching means in timed relation to the operation of said second switching means to produce successively individual impulses at said impulse receiving terminals.
  • An impulse generator comprising a first group and a second group of switching means each group comprising a plurality of individual switching means, a plurality of impulse receiving terminals, coincidence circuit control means connected with each terminal, means for interconnecting each of the switching means in said first group with each of the switching means in said second group over paths each including one of said impulse receiving terminals and coincidence circuit control means connected therewith, means for repeatedly sequentially and cyclically actuating the switching means in said first groups, and means for actuating one of the individual switching means in said second group during each cyclic operation of all of the switching means in said first group to produce by operative actuation of each switching means in said first group and coincident operative actuation of one of the switching means in said second group successive impulses at said impulse receiving terminals under the control of the coincidence circuit control means respectively connected therewith.
  • An impulse generator according to claim 8, wherein the number of impulse receiving terminals is equal to the product of the number of switching means in said first group and the number of switching means in said second group.
  • An impulse generator comprising third switching means for controlling the operatively effective actuation of the switching means in said first and second groups.
  • An impulse generator wherein said impulse receiving terminals are subdivided in a plurality of groups corresponding in number to the number of switching means in said second group, each group of impulse receiving terminals having a number of terminals corresponding to the number of switching means in said first group.
  • An impulse generator according to claim 8 wherein 5 6 electronic switching means constitute the switching means References Cited in the file of this patent m Sald t group UNITED STATES PATENTS 13.
  • An impulse generator according to clann 8, comprising rectifier means constituting said coincidence cir- 2117639 Watson May cuit control means connected with each impulse receiving 5 2541932 Melhose 195 terminaL 2,664,467 Den Hertog Dec. 29, 1953

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Rectifiers (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Amplifiers (AREA)
  • Electrotherapy Devices (AREA)

Description

2 Sheets-Sheet l K. HAGENHAUS MARKER IMPULSE GENERATOR FOR SIGNALLING SYSTEMS May 22, 1956 Filed July 50, 1952 HH M A ikvezzjox' j Z%QZZ6.
May 22, 1956 K. HAGENHAUS 2,747,023
MARKER IMPULSE GENERATOR FOR SIGNALLING SYSTEMS Filed July so, 1952 2 Sheets-Sheet 2 w J u m m MN gx x |IMWNQQM ENK IMWNRLW F H AYWMN w 3 h F u a K K a k -w #N mvlxqqib m ir'zmszzr #752455 672%.2u5.
nited States Fatent Application .luly 39, @532, Serial N 391,647
(Claims priority, application Germany August 13, 12 51.
13 Claims. (Cl. 179-lfi) This invention is concerned with an impulse generator for producing successive current impulses serving as marker impulses in a signalling system, for example, in a telephone system.
One of the objects of the invention is to provide a marker impulse generator device which has a relatively small number of circuit closure or switching means as compared with t e number of outlets serving for the utilization of the ma her impulses produced.
This object is a. Zed by the coordinate cooperation of successively operable circuit closure or switching means combined t a first group, which are repeatedly operable in a certain time sequence, with a second group of circuit closure or switching means which are successively operated, each during a cycle of operation of the means of the first group, for the purpose of connecting potentials to outlets or impulse receiving terminals serving for receiving the corresponding marked impulses. The circuit closure or switching means may be contacts or electr nic tubes. A coincidence circuit may be connected with each impulse receiving terminal comprising, for example, a rectifier, for producing an impulse at the corresponding terminal upon coincident actuation of the switching means in said first and said second groups.
Two examples of the invention are diagrammatically illustrated in the accompanying drawings, Figs 1 and 2.
The impulse generator illustrated in Pig. 1 comprises a first group of contacts P1 P23, only four of these contacts being shown for convenience, which are suitably actuated, for example, by cams on a rotating shaft (not shown), and a second group of similarly actuated contacts Pzi Pz1s, of which only five are shown for convenience. The contacts P1 P23 in the first group are in a predetermined rhythm actuated from their normal positions in which they are shown to their operated positions, while the contacts Pzi Pa: in the second group are similarly actuated, but in another rhythm. The time t contact closure is such that the contacts P1 P23 are successively actuated to their operated positions, each contact once, du ing the time when any one contact PZl Pzis is l its operated position. For example, during the time when the contact Pzi is in its operating position, contacts P1 .Pzs will be successively actuated. This cycle is repeated with contact P22 in operated position after restoration of contact Pz1, etc. The contacts are connected in a. working circuit over the impulse receivin terminals and cooperate in coordinate fashion.
if it is, for example, assumed that only contact P11 is in its operated position, current will flow from the volt battery over all resistors connected with contact Pzi also over the rectifiers disposed in series with these resistors (coincidence circuit control means) to ground over the contacts E 1 P23 which happen to be in normal position. if con act P1 is now actuated to its operated position, an opposing current from the -volt battery will be connected to the associated circuit, which will block the corresponding rectifiers in such circuit. Accordingly, at the point P11, which is one of the many ice marker impulse outlets or impulse receiving points or terminals of the generator, there will momentarily occur a potential of ten volts. Such current impulses will therefore occur at the rker impulse outlet or receiving terrninals or points P11 P123 coincident with the successive actuation of the contacts P1 P23, and thereafter in the indicated rhythm also at the marker impulse outlet or receiving terminals or points Pll1 PXlllzs responsive to successive operation of the contacts Pza Pzis.
A potential of ten volt-s will thus be connected in impulse fashion to the marker impulse receiving points or terminals P11 PXIIIzs, each at a difierent instant, thus matting available 299 marker impulses. The numer of outlets or impulse receiving points or terminals is equal to the product of the number of contacts in the first group and the number of contacts in the second group. The marker impulse receiving terminals are subdivided into a number of groups which corresponds to the number of contacts in the second group.
The impulse generator shown in Fig. 2 has electronic circuit closure or switching means in place of the contacts l 1 P23 of the embodiment of Fig. 1, namely, the tubes R01 R023. The inlet leads E1 E23 connect with a suitable impulse device (not shown) which is adapted to transmit 23 impulses which are displaced as to time. The contacts Pz1 Pan with their associated marker impulse outlets are multipled, and each multiple is switched in successively by auxiliary contacts such as Pm PWlO. The number of marker impulse outlets or r ceivin terminals can in this fashion be increased to .rPii .rPXlllas. Upon becoming conductive responsive to receiving the initiating impulses over their associated leads E1 E23, the tubes R01 R023 deliver successive impulses over their respective coating transformers T1 T23 which are connected to the anode circuits thereof for blocking the rectifiers in the corresponding circuits in the same manner as such blocking was effected by the cam-controlled contacts P1 P23 of Fi l. Successive current impulses are therefore produced at the marker impulse receiving terminals P11 xPXll'lzs just like in the embodiment according to Fig. 1. Corresponding marker impulse receiving terminals of the various groups of Fig. 2 are connected over auxiliary rectifiers Gz. If such rectifiers were not provided, there would occur an undesirably great load on account of the rectifiers Ga which are in parallel circuit on the marker impulse outlets.
The designation switching means, or similar language as used in the appended claims is intended to embrace contact means such as the contact shown in Fig. l and also switching means including electronic means such as shown in Fig. 2.
Changes may be made within the scope and spirit of the appended claims.
I claim:
1. An impulse generator comprising a plurality of ups of impulse receiving terminals each group comprising several terminals, a plurality of first switching means corresponding in number to the number of terminals in each group of terminals, circuit means for connecting several of said terminals with each of said first switching means, said circuit means comprising current control means for each terminal, a plurality of second switching means corresponding in number to the number of groups or" said terminals, each of said second switching means being individual to one of said group of terminals, resistor means connected with each terminal in each group of terminals, means for connecting said resistor means in each group of terminals in multiple to the second switching means which is individual thereto, means for repeatedly sequentially and cyclically operating said first switching means, and means for actuating one of said second switching means during each cyclic operation of all of said first switching means for coordinating the operations of said first switching means with the operation of said second switching means to produce successively individual impulses at said impulse receiving terminals.
2. An impulse generator comprising a plurality of groups of impulse receiving terminals each group comprising several terminals, a plurality of first switching means corresponding in number to the number of terminals in each group of terminals, circuit means for connecting several of said terminals with each of said first switching means, said circuit means comprising current control means for each terminal, a plurality of second switching means corresponding in number to the number of groups of said terminals, each of said second switching means being individual to one of said group of terminals, resistor means connected with each terminal in each group of terminals, means for connecting said resistor means in each group of terminals in multiple to the second switching means which is individual thereto, means for repeatedly and cyclically operating said first switching means, and means for actuating one of said second switching means during each cyclic operation of all of said first switching means for coordinating the operations of said first switching means with the operation of said second switching means, said second switching means connecting a predetermined potential over said multipled resistor means to the respectively associated impulse receiving terminals and said first switching means connecting an opposing potential to said impulse receiving terminals over said current control means to produce successively individual impulses at said terminals.
3. An impulse generator comprising a plurality of groups of impulse receiving terminals each group comprising several terminals, a plurality of first switching means corresponding in number to the number of terminals in each group of terminals, circuit means for connecting several of said terminals with each of said first switching means, said circuit including rectifier means for each terinal, a plurality of second switching means corresponding in number to the number of groups of said terminals, each of said second switching means being individual to one of said group of terminals, resistor means connected with each terminal in each group of terminals, means for connecting said resistor means in each group of terminals in multiple to the second switching means which is individual thereto, means for repeatedly and cyclically operating said first switching means, and means for actuating one of said second switching means during each cyclic Operation of all of said first switching means for coordinating the operations of said first switching means with the operation of said second switching means, said second switching means connecting a predetermined potential over said multipled resistor means to the respectively associated impulse receiving terminals and said first switching means connecting an opposing potential to said impulse receiving terminals over said rectifier means to produce successively individual impulses at said terminals.
4. An impulse generator comprising a plurality of groups of impulse receiving terminals each group comprising several terminals, a plurality of first switching means corresponding in number to the number of impulse receiving terminals in each of said groups of terminals, a plurality of second switching means corresponding in numher to the number of groups of said terminals, each of said second switching means being individual to one of said group of terminals, resistor means connected with each terminal in each group of said terminals, means for connecting said resistor means in each group of terminals in multiple to the second switching means which is individual thereto, rectifier means connected with each terminal in each group of said terminals, circuit means for connecting with each of said first switching means at least one terminal in each of said groups of terminals over the rectifier means respectively associated therewith, means tor successively individually operating each of said second switching means for a predetermined time interval to connect during such interval a predetermined potential to the resistor means respectively multiply connected with the corresponding second switching means, and means for successively operating all of said first switching means during each operating interval of said second switching means to connect a predetermined opposing potential successively to said rectifier means for the purpose of successively producing individual impulses at said impulse receiving terminals.
5. An impulse generator according to claim 1, comprising electronic switching means constituting said first switching means.
6. An impulse generator according to claim 1, comprising contact means constituting said first switching means.
7. An impulse generator comprising a plurality of groups of impulse receiving terminals disposed subdivided in a plurality of groups each comprising a predetermined number of terminals, a plurality of electronic switching means constituting first switching means in number corresponding to the number of terminals in each of said groups, circuit means for connecting corresponding terminals of different of said groups with predetermined individual electronic switching means, rectifier means in said circuit means, a plurality of second switching means respectively individual to said groups of terminals, means for connecting the respective second switching means with the corresponding groups of terminals, means for repeatedly sequentially and cyclically operating said electronic switching means, and means for actuating one of said second switching means during each cyclic operation of said electronic switching means for coordinating the operations of said electronic switching means in timed relation to the operation of said second switching means to produce successively individual impulses at said impulse receiving terminals.
8. An impulse generator comprising a first group and a second group of switching means each group comprising a plurality of individual switching means, a plurality of impulse receiving terminals, coincidence circuit control means connected with each terminal, means for interconnecting each of the switching means in said first group with each of the switching means in said second group over paths each including one of said impulse receiving terminals and coincidence circuit control means connected therewith, means for repeatedly sequentially and cyclically actuating the switching means in said first groups, and means for actuating one of the individual switching means in said second group during each cyclic operation of all of the switching means in said first group to produce by operative actuation of each switching means in said first group and coincident operative actuation of one of the switching means in said second group successive impulses at said impulse receiving terminals under the control of the coincidence circuit control means respectively connected therewith.
9. An impulse generator according to claim 8, wherein the number of impulse receiving terminals is equal to the product of the number of switching means in said first group and the number of switching means in said second group.
It). An impulse generator according to claim 8, comprising third switching means for controlling the operatively effective actuation of the switching means in said first and second groups.
11. An impulse generator according to claim 8, wherein said impulse receiving terminals are subdivided in a plurality of groups corresponding in number to the number of switching means in said second group, each group of impulse receiving terminals having a number of terminals corresponding to the number of switching means in said first group.
12. ,An impulse generator according to claim 8, wherein 5 6 electronic switching means constitute the switching means References Cited in the file of this patent m Sald t group UNITED STATES PATENTS 13. An impulse generator according to clann 8, comprising rectifier means constituting said coincidence cir- 2117639 Watson May cuit control means connected with each impulse receiving 5 2541932 Melhose 195 terminaL 2,664,467 Den Hertog Dec. 29, 1953
US30164752 1951-08-13 1952-07-30 Marker impulse generator for signalling systems Expired - Lifetime US2747023A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308433A (en) * 1963-01-10 1967-03-07 Rca Corp Switching matrix
DE3045512A1 (en) * 1980-12-03 1982-07-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Switching circuit for switching through cable TV and radio programs - has numerous switches each comprising two or more series diodes
US9349288B2 (en) 2014-07-28 2016-05-24 Econolite Group, Inc. Self-configuring traffic signal controller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1003272B (en) * 1957-06-26 1957-02-28 Siemens Ag Numeric transmitter with a pick-up which searches for marking points marked by memory contacts to determine the number of pulses in a series of pulses, especially for telephone systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2117639A (en) * 1935-08-07 1938-05-17 Fay G Johnson Traffic signal
US2541932A (en) * 1948-05-19 1951-02-13 Bell Telephone Labor Inc Multiplex speech interpolation system
US2664467A (en) * 1949-07-29 1953-12-29 Int Standard Electric Corp Cyclic pulse controlled telecommunication selection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2117639A (en) * 1935-08-07 1938-05-17 Fay G Johnson Traffic signal
US2541932A (en) * 1948-05-19 1951-02-13 Bell Telephone Labor Inc Multiplex speech interpolation system
US2664467A (en) * 1949-07-29 1953-12-29 Int Standard Electric Corp Cyclic pulse controlled telecommunication selection system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308433A (en) * 1963-01-10 1967-03-07 Rca Corp Switching matrix
DE3045512A1 (en) * 1980-12-03 1982-07-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Switching circuit for switching through cable TV and radio programs - has numerous switches each comprising two or more series diodes
US9349288B2 (en) 2014-07-28 2016-05-24 Econolite Group, Inc. Self-configuring traffic signal controller
US9978270B2 (en) 2014-07-28 2018-05-22 Econolite Group, Inc. Self-configuring traffic signal controller
US10198943B2 (en) 2014-07-28 2019-02-05 Econolite Group, Inc. Self-configuring traffic signal controller
US10991243B2 (en) 2014-07-28 2021-04-27 Econolite Group, Inc. Self-configuring traffic signal controller

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FR69952E (en) 1959-01-30
GB718155A (en) 1954-11-10
BE513500A (en) 1952-08-30
BE545026A (en) 1959-10-09
FR1090934A (en) 1955-04-05
DE897853C (en) 1953-11-26
DE951458C (en) 1956-10-31

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