US3906161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for switching pulse code modulated signals using time-division multiplex principles
Assignee: Siemens AG
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Filing: 1973-05-15
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Granted: 1975-09-16
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Expires: 1993-05-15
Abstract
Abstract A method is described for effecting the connection of time division multiplex trunks. Through-connecting units are used which cause time channel conversion and spatial throughconnection. These through-connecting units form with a spatial switching network a time division multiplex coupling array having the known time-space construction. If on an outgoing trunk selected for a desired connection and at the output with which a connection is to be established there is no common free time position, an adjacent time position is used. The latter is made possible by means of the timing on the spatial portion of the coupling array. An intermediate storage is used to bridge the time periods between time slots. This storage is disposed at the output of the spatial portion of the time division multiplex coupling array.
Inventors
- 👤 Max Schlichte
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; H04Q11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
A method for selecting an outgoing time channel for permitting the completion of a connection between time-division multiplex trunks transmitting pulse code modulated (PCM) signals through a time-division multiplex exchange installation having a plurality of through-connecting units, each of which has time channels having little congestion, each said throughconnecting unit including means for causing time channel conversion and spatial through-connection, said through-connecting units being coupled to a spatial switching network to form a time-division multiplex array in a timespace configuration, comprising the steps of: shifting, if on the outgoing multiplex trunk selected according to the connection desired, and at the output of a said throughconnecting unit with which a connection is to be established there is no free common time slot, the time slot of the said through-connecting unit to an adjacent time slot, by means of selecting the crosspoints of the spatial portion of the coupling array which will complete the connection through said adjacent time slot, determining the time relationship of said through-connecting unit time slot with respect to the outgoing time channel time slot to be seized and bridging the time interval between the two time slots occupied, respectively, by said through-connecting unit and said outgoing time channel by providing storage for said through-connecting unit time slot at the output of said spatial switching network.
Claim 2
Independent Claim
218 words
A method for selecting an outgoing time channel for permitting the completion of a connection between time-division multiplex trunks transmitting pulse code modulated (PCM) signals through a time-division multiplex exchange installation having a plurality of through-connecting units, each of which has time channels having little congestion, each said throughconnecting unit including means for causing time channel conversion and spatial through-connection, said through-connecting units being coupled to a spatial switching network to form a time-division multiplex array in a timespace configuration, comprising the steps of: shifting, if on the outgoing multiplex trunk selected according to the connection desired, and at the output of a said throughconnecting unit with which a connection is to be established there is no free common time slot, the time slot of the said through-connecting unit to an adjacent time slot, by means of selecting the crosspoints of the spatial portion of the coupling array which will complete the connection through said adjacent time slot, determining the time relationship of said through-connecting unit time slot with respect to the outgoing time channel time slot to be seized and bridging the time interval between the two time slots occupied, respectively, by said through-connecting unit and said outgoing time channel by providing storage for said through-connecting unit time slot at the output of said spatial switching network.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |