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US3632885A
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Means for automatically shifting channel allocations between individual stations of a multiplex transmission system
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1969-10-24
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Granted: 1972-01-04
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Expires: 1989-10-24
Abstract
Abstract In a multiplex transmission system composed of a plurality of ground stations each normally allocated an equal number of the data channels available in the system, means for determining when all of the channels assigned any given ground station are not being utilized and for permitting other ground stations to utilize those channels.
Inventors
- 👤 Wolf Herold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:10
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/204; H04B7/212; H04B7/2121
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
138 words
In a system for the multiplex transmission of binary-coded data between n ground stations, which system has a total capacity of C channels divided equally among the ground stations, each ground station transmitting information from each of its channels in a cyclic sequence, all ground stations transmitting simultaneously with their cyclic sequences in synchronism, the information in each channel being modulated by a respective binary-coded address word which is repeated during each cyclic sequence, and each ground station detecting the information directed to it by correlating all of the transmitted data with its assigned address word, the improvement comprising means operatively associated with all ground stations for enabling any ground station whose channel capacity is being fully utilized to transmit data over unoccupied channels normally assigned to another ground station, which data is modulated by a special address.
Claim 2
Dependent Claim
138 words
In a system for the multiplex transmission of binary-coded data between n ground stations, which system has a total capacity of C channels divided equally among the ground stations, each ground station transmitting information from each of its channels in a cyclic sequence, all ground stations transmitting simultaneously with their cyclic sequences in synchronism, the information in each channel being modulated by a respective binary-coded address word which is repeated during each cyclic sequence, and each ground station detecting the information directed to it by correlating all of the transmitted data with its assigned address word, the improvement comprising means operatively associated with all ground stations for enabling any ground station whose channel capacity is being fully utilized to transmit data over unoccupied channels normally assigned to another ground station, which data is modulated by a special address.
Claim 3
Dependent Claim
80 words
An arrangement as defined in claim 1 wherein each ground station that utilizes only a fraction k of its available number of channels C/n; where k< 1, reduces the bit timing rate of its address words by k and wherein all ground stations which utilize one of the unused channels also reduce the bit timing rate of the associated address words by k and transmit those words in the signal gaps between the address words of the first-mentioned ground station.
Claim 4
Dependent Claim
66 words
An arrangement as defined in claim 1 wherein each ground station which utilizes only a fraction k of the available number of channels C/n, employs an intermediate storage and transmits data without interrUption for k/1-k) time frames and leaves the subsequent time frame unoccupied, and wherein this subsequent empty time frame is occupied by other ground stations wishing to utilize it for previously stored data transmissions.
Claim 5
Dependent Claim
30 words
An arrangement as defined in claim 1 further comprising a master station acting as a central office for assigning the unoccupied channels of one ground station to other ground stations.
Claim 6
Dependent Claim
24 words
An arrangement as defined in claim 1 wherein the special address is produced as a time function in phase quadrature to the original address.
Claim 7
Dependent Claim
32 words
An arrangement as defined in claim 1 wherein each ground station which occupies unoccupied channels of another ground station synchronizes the signals involved with the bit timing of the other ground station.
Claim 8
Dependent Claim
38 words
An arrangement as defined in claim 1 wherein a plurality of ground stations can occupy the unoccupied channels of another ground station and one ground station can occupy the unoccupied channels of a plurality of other ground stations.
References Cited (Backward Citations)
US3517312A
Cited
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 |