US3858007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for synchronizing pulse bursts
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1973-01-23
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Granted: 1974-12-31
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Expires: 1993-01-23
Abstract
Abstract A circuit arrangement for synchronizing pulse bursts and pulse frames in the transmission of pulse coded data. The data is transmitted via directional transponders of a communication satellite using time division multiplexing. A main transponder in a satellite is associated with an antenna which supplies signals received from ground stations thereto and radiates signals, including synchronizing information signals to the ground stations. Circuits are provided at each ground station which respond to the received synchronizing information signals as well as the individual station''s own burst signals, these circuits being effective to control the pulse repetition rate (frequency) and the phase of the transmitted pulse bursts at each respective ground station.
Inventors
- 👤 H Ganssmantel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:46
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/185; H04B7/1853; H04B7/18532; H04B7/18534; H04B7/204; H04B7/212; H04B7/2125; H04J; H04J3/00; H04J3/02; H04J3/06; H04L; H04L7/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
In a circuit arrangement, for synchronizing pulse bursts and pulse frames in the transmission of pulse coded data between ground stations via directional transponders of a communication satellite using time division multiplexing, the satellite having spot beam directional antennas covering at least two spatially separated ground stations each disposed within the radiation range and pattern of a respective one of the directional antennas, the improvement comprising: main transponder means in said satellite; an additional antenna having a radiation range and pattern which covers at least the radiation ranges and patterns of said directional antennas, said additional antenna being coupled to said main transponder means for supplying received signals from said ground stations thereto and for radiating signals received therefrom, including synchronizing information signals to said ground stations; and means at each said ground station responsive to received synchronizing information signals and to its own received distinctive pulse bursts for controlling the repetition rate and phase of its distinctive pulse bursts; whereby all said stations participate in the synchronous bit timing operation within the range of the antennas with a given time format.
Claim 2
Dependent Claim
182 words
In a circuit arrangement, for synchronizing pulse bursts and pulse frames in the transmission of pulse coded data between ground stations via directional transponders of a communication satellite using time division multiplexing, the satellite having spot beam directional antennas covering at least two spatially separated ground stations each disposed within the radiation range and pattern of a respective one of the directional antennas, the improvement comprising: main transponder means in said satellite; an additional antenna having a radiation range and pattern which covers at least the radiation ranges and patterns of said directional antennas, said additional antenna being coupled to said main transponder means for supplying received signals from said ground stations thereto and for radiating signals received therefrom, including synchronizing information signals to said ground stations; and means at each said ground station responsive to received synchronizing information signals and to its own received distinctive pulse bursts for controlling the repetition rate and phase of its distinctive pulse bursts; whereby all said stations participate in the synchronous bit timing operation within the range of the antennas with a given time format.
Claim 3
Dependent Claim
50 words
A circuit arrangement as defined in claim 1, wherein said means for controlling the repetition rate and position of the pulse bursts includes a clock pulse generator and a phase comparator, said clock pulse generator having its input coupled to said phase compArator and being responsive to output signals therefrom.
Claim 4
Dependent Claim
68 words
A circuit arrangement as defined in claim 2, wherein said means for controlling the repetition rate and position of the pulse bursts includes signal evaluating means for deriving signaling information signals at each ground station to develop a control signal output, and burst phase control circuit means coupled to said signal evaluating means and responsive to its control signal output for regulating the phase of the pulse bursts.
References Cited (Backward Citations)
US3678387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |