US3632883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telecommunication exchange with time division multiplex
Assignee: US Philips Corp
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Filing: 1969-07-02
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Granted: 1972-01-04
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Expires: 1989-07-02
Abstract
Abstract A telecommunication exchange with time-division multiplex for conducting information received on a channel of a timemultiplexed communications trunk to a selected channel of a second time-multiplexed communications trunk. The information from all channels is sequentially stored in a cyclic storage register in fixed relationships with cyclic code numbers generated by a local clock generator. At a clock instant determined by the address of an output channel the address of an input channel is serially introduced into a second cyclic register. The output of the second cyclic register is decoded and used to switch the output of the first cyclic register corresponding to the selected input channel to an output line.
Inventors
- 👤 Einar Andreas Aagaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:53
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
378 words
An arrangement for a telecommunication exchange comprising a first line member connected to a first multiplex line through which are transmitted in the incoming direction of transmission channel information originating from a plurality of first transmission channels each comprising a plurality of words in time-division multiplex in first-channel time intervals individually associated with said first transmission channels of a repetitive first cycle of channel time intervals and comprising a second line member connected to a second multiplex line through which are transmitted in the outgoing direction words of channel information intended for a plurality of second transmission channels in time-division multiplex in second-channel time intervals individually associated with said second transmission channels of a repetitive second cycle of channel time intervals, the cycle time of the second cycle of channel time intervals being equal to that of said first cycle, and furthermore comprising an internal transmission path within the arrangement connecting said first line member to said second line member and including at least one switching gate, the first line member comprising a cyclic storage member having a storage cycle time equal to the duration of a cycle of second-channel time intervals, and comprising for every word of said first transmission channels a storage location in which a word of channel information can be stored, said arrangement comprising furthermore first control means for storing words of channel information from every transmission channel in a storage location of the cyclic storage member individually associated with said first transmission channel, said first line member comprising means for supplying, during each storage cycle, the words of channel information stored in the cyclic storage member to said internal transmission path, characterized in that, the arrangement comprises second control means for controlling said switching gate into the conductive state during and for the duration of a selected second-channel time interval of every said second cycle of channel time intervals, third control means to supply the address of a selected storage location of said cyclic storage member to said second line member at a time associated with said selected second-channel time interval, and the second line member comprises selection means for selecting, during the said selected second-channel time interval the word of the channel information originating from the storage location identified by said address.
Claim 2
Dependent Claim
378 words
An arrangement for a telecommunication exchange comprising a first line member connected to a first multiplex line through which are transmitted in the incoming direction of transmission channel information originating from a plurality of first transmission channels each comprising a plurality of words in time-division multiplex in first-channel time intervals individually associated with said first transmission channels of a repetitive first cycle of channel time intervals and comprising a second line member connected to a second multiplex line through which are transmitted in the outgoing direction words of channel information intended for a plurality of second transmission channels in time-division multiplex in second-channel time intervals individually associated with said second transmission channels of a repetitive second cycle of channel time intervals, the cycle time of the second cycle of channel time intervals being equal to that of said first cycle, and furthermore comprising an internal transmission path within the arrangement connecting said first line member to said second line member and including at least one switching gate, the first line member comprising a cyclic storage member having a storage cycle time equal to the duration of a cycle of second-channel time intervals, and comprising for every word of said first transmission channels a storage location in which a word of channel information can be stored, said arrangement comprising furthermore first control means for storing words of channel information from every transmission channel in a storage location of the cyclic storage member individually associated with said first transmission channel, said first line member comprising means for supplying, during each storage cycle, the words of channel information stored in the cyclic storage member to said internal transmission path, characterized in that, the arrangement comprises second control means for controlling said switching gate into the conductive state during and for the duration of a selected second-channel time interval of every said second cycle of channel time intervals, third control means to supply the address of a selected storage location of said cyclic storage member to said second line member at a time associated with said selected second-channel time interval, and the second line member comprises selection means for selecting, during the said selected second-channel time interval the word of the channel information originating from the storage location identified by said address.
Claim 3
Dependent Claim
83 words
An arrangement as claimed in claim 1, characterized in that the second and third control mEans are together formed by a cyclic control storage member having a storage cycle time equal to the cycle time of said first and second cycles, said cyclic storage member having a storage location for every second-channel time interval, in which the address of the switching gate and the address of a storage location of the cyclic storage member included in the first line member, can be stored.
Claim 4
Dependent Claim
93 words
An arrangement as claimed in claim 2, characterized in that it comprises a cyclic address generator whose generator cycle time is equal to a second-channel time interval, said generator producing in every generator cycle the address of the storage locations from which emanate the channel informations transmitted by the first line member to the second line member, while the second line member has associated with it a comparison device for comparing the storage location address supplied by the cyclic control storage member with the storage location addresses produced by the cyclic address generator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |