US3641273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple data transmission system with variable bandwidth allocation among the transmitting stations
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1969-09-22
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Granted: 1972-02-08
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Expires: 1989-09-22
Abstract
Abstract In a multiplex data transmission system including several stations connected to a common transmission path and each serving a plurality of independent users, with each user being assigned an individual channel and each station being assigned a portion of the total transmission path capacity, means are provided for varying the size of the portion available to each station in accordance with the number of its users actually desiring to use the transmission path.
Inventors
- 👤 Wolf Herold
- 👤 Horst Ohnsorge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:31
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/24; H04J3/242; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/204; H04B7/2043; H04J3/16; H04J3/1682
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
In a multiplex data transmission system including a single transmission path, a plurality of stations each having a plurality of channels for individual users, and multiplexing means having a plurality of inputs each connected to a respective station and an output connected to said transmission path for placing a respective portion of the data handling capacity of the transmission path at the disposal of each station, the improvement comprising: means in each said station for connecting to the output of its respective station only Those user channels currently being used; and a plurality of control means each connected to a respective one of said stations and to the output of said multiplexing means for detecting the absence of data transmission in a portion of such capacity and for introducing the transmission from its respective station into such portion.
Claim 2
Dependent Claim
138 words
In a multiplex data transmission system including a single transmission path, a plurality of stations each having a plurality of channels for individual users, and multiplexing means having a plurality of inputs each connected to a respective station and an output connected to said transmission path for placing a respective portion of the data handling capacity of the transmission path at the disposal of each station, the improvement comprising: means in each said station for connecting to the output of its respective station only Those user channels currently being used; and a plurality of control means each connected to a respective one of said stations and to the output of said multiplexing means for detecting the absence of data transmission in a portion of such capacity and for introducing the transmission from its respective station into such portion.
Claim 3
Dependent Claim
23 words
An arrangement as defined in claim 1 wherein one portion of the transmission path capacity is associated with each channel being currently used.
Claim 4
Dependent Claim
25 words
An arrangement as defined in claim 2 wherein said multiplexing means perform a time-division multiplexing operation and each portion is constituted by a time period.
Claim 5
Dependent Claim
73 words
An arrangement as defined in claim 3 wherein said means are connected to each station for delivering, to said transmission path, the following data during each time period: the synchronizing signals of the station containing the channel over which a transmission is initiated and of the station to which the transmission is being delivered; data signals from the transmission initiating channel and the receiving channel; and the address signal of the receiving channel.
Claim 6
Dependent Claim
55 words
An arrangement as defined in claim 3 wherein said control means are connected to said stations for placing each time period at the disposal of a respective station and for applying to said transmission path during each time period data signals from all of the channels which are currently in use at the respective station.
References Cited (Backward Citations)
US3406257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |