US3706856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for supervision of the control of telecommunications switching networks
Assignee: GPT INTERNATIONAL Ltd
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Filing: 1971-03-31
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Granted: 1972-12-19
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Expires: 1991-03-31
Abstract
Abstract A switching network formed by a succession of link-connected stages of crosspoint matrix switches A, B, C and D and having marking means, for marking salient points of any connection required to be established over the network, in which the control equipment includes or has associated with it a separate detecting means for each stage of the network and each of these detecting means is connected to all marking conductors from which marking diodes of all inlets of matrix switches of the particular stage are branched and in which the marking means appropriate to a required inlet of a matrix switch of that stage is only rendered operative as a result of said detecting means responding to a valid signal emanating over particular ones of the marking diodes and resulting solely from the application of a significant source of potential to the marking/holding conductor of the matrix switch outlet to which said inlet is required to be connected.
Inventors
- 👤 Brian Grundy
- 👤 Peter Samuel Hampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:48
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
242 words
A switching network and control means of the kind wherein the network comprises a succession of marking-controlled stages of identically-oriented relay-type matrix switches having a marking diode for each crosspoint thereof and an inlet marking conductor for corresponding inlets of all switches of each stage individually, and for each stage each inlet marking conductor extends over marking diodes to individual operate coils of the crosspoint relays of a corresponding inlet of each of the switches and wherein the establishment of any connection over the network as a result of said control means effecting the marking of the pertinent marking conductors of said stages is brought about by the sequential operation of a crosspoint relay in one switch of each stage, characterized in that the control means includes a separate detecting device for each stage of the network and each said detecting device is connected to all the inlet marking conductors of the pertinent stage and is responsive to a signal emanating over some of said marking diodes and produced solely by application of a source of outlet-marking potential to the marking conductor of the matrix switch outlet to which said inlet is required to be connected and said control means also includes for each stage a separate marking device for each inlet marking conductor of the stage, one of said marking devices being rendered operative by said control means as a result of the response of the detecting device of the stage.
Claim 2
Dependent Claim
242 words
A switching network and control means of the kind wherein the network comprises a succession of marking-controlled stages of identically-oriented relay-type matrix switches having a marking diode for each crosspoint thereof and an inlet marking conductor for corresponding inlets of all switches of each stage individually, and for each stage each inlet marking conductor extends over marking diodes to individual operate coils of the crosspoint relays of a corresponding inlet of each of the switches and wherein the establishment of any connection over the network as a result of said control means effecting the marking of the pertinent marking conductors of said stages is brought about by the sequential operation of a crosspoint relay in one switch of each stage, characterized in that the control means includes a separate detecting device for each stage of the network and each said detecting device is connected to all the inlet marking conductors of the pertinent stage and is responsive to a signal emanating over some of said marking diodes and produced solely by application of a source of outlet-marking potential to the marking conductor of the matrix switch outlet to which said inlet is required to be connected and said control means also includes for each stage a separate marking device for each inlet marking conductor of the stage, one of said marking devices being rendered operative by said control means as a result of the response of the detecting device of the stage.
Claim 3
Dependent Claim
125 words
A switching network with control means as claimed in claim 1 and in which said control means includes (a) a resettable timing device actuable to attain a state defining a maximum period for establishment of each connection through the network and arranged to be reset when such a connection is established within a said period and (b) a separate monitoring device for each stage of the network and which is connected to the marking devices of all inlets of the matrix switches of the relevant stage, said monitoring devices being collectively controlled upon the said timing device attaining its said state to institute a signal indicative of each stage (if any) of the network at which the operation of an inlet marking device is evident.
Claim 4
Dependent Claim
109 words
A matrix switch employing marking diodes between Its inlet marking leads and the crosspoint relay coils characterized in that the inlet-marking leads are connected to individual inlet-marking devices and over isolating diodes to a common detecting device, and the inlet-marking device of an inlet of the switch is rendered operative to apply an inlet-marking potential to the related inlet-marking lead as a result of actuation of the detecting device by a signal emanating over some of the marking diodes solely due to application of a source of outlet-marking potential to the marking conductor of that outlet of the matrix switch to which said inlet is required to be connected.
Claim 5
Dependent Claim
109 words
A matrix switch employing marking diodes between Its inlet marking leads and the crosspoint relay coils characterized in that the inlet-marking leads are connected to individual inlet-marking devices and over isolating diodes to a common detecting device, and the inlet-marking device of an inlet of the switch is rendered operative to apply an inlet-marking potential to the related inlet-marking lead as a result of actuation of the detecting device by a signal emanating over some of the marking diodes solely due to application of a source of outlet-marking potential to the marking conductor of that outlet of the matrix switch to which said inlet is required to be connected.
References Cited (Backward Citations)
US3462653A
Cited
US3480913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |