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US3670248A
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Method and apparatus for converting multi-pulse commands into command units for transmission
Assignee: Airbus Defence and Space GmbH
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Filing: 1969-07-09
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Granted: 1972-06-13
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Expires: 1989-07-09
Abstract
Abstract In a method of transmitting cyclically formed commands, in the form of individual pulses, over a transmission channel which is restricted in its transmission capacity, security against interference, or both, the individual pulses are combined to form larger command units which units are cyclically transmitted. The balance of pulses remaining within a transmission cycle, during formation of the larger command units, is transferred to the respective following transmission cycle. The apparatus includes an input buffer providing an output command in the form of a number of individual pulses related to a certain time period. A first gate circuit connects the buffer with the forward-counting input of a forward-backward counter, and the counter is connected, through a second gate circuit and an output amplifier, with a transmitter forming the input of a transmission channel. The output of the second gate circuit is connected, through a restoring buffer, with the backward-counting input of the counter. The two buffers and the two gate circuits are controlled by a common timing stage, with the respective timing sequences for the individual components being coordinated in a selected manner.
Inventors
- 👤 Fritz Hofmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:56
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/30; F41G7/301; F41G7/306; G; G08; G08C; G08C19/00; G08C19/16; G08C19/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
218 words
A method of transmitting cyclically formed commands, in the form of individual pulses, over a transmission channel which is restricted in its transmission capacity, security against interference, or both, comprising the steps of forming each command as a series of pulses each having a unit command value and whose total number represents the command; uniformly distributing the series of pulses in each of successive equal length scanning cycles each having the same possible maximum number of pulses and with the number of pulses of such series in each scanning cycle being not greater than such possible maximum number; transmitting commands over successive equal length transmission cycles whose length is less than that of the scanning cycles; counting the number of scanning cycle pulses appearing during a transmission cycle; responsive to the number of pulses counted in a transmission cycle attaining a first preset number, forming and transmitting a command unit whose command value weight is equal to that of a second preset number of the series of pulses; and subtracting said second preset number from the number of counted pulses while continuing counting of the scanning cycle pulses; whereby, during each transmission cycle, a command unit is transmitted only if the number of pulses counted during the transmission cycle is at least equal to such first preset number.
Claim 2
Independent Claim
218 words
A method of transmitting cyclically formed commands, in the form of individual pulses, over a transmission channel which is restricted in its transmission capacity, security against interference, or both, comprising the steps of forming each command as a series of pulses each having a unit command value and whose total number represents the command; uniformly distributing the series of pulses in each of successive equal length scanning cycles each having the same possible maximum number of pulses and with the number of pulses of such series in each scanning cycle being not greater than such possible maximum number; transmitting commands over successive equal length transmission cycles whose length is less than that of the scanning cycles; counting the number of scanning cycle pulses appearing during a transmission cycle; responsive to the number of pulses counted in a transmission cycle attaining a first preset number, forming and transmitting a command unit whose command value weight is equal to that of a second preset number of the series of pulses; and subtracting said second preset number from the number of counted pulses while continuing counting of the scanning cycle pulses; whereby, during each transmission cycle, a command unit is transmitted only if the number of pulses counted during the transmission cycle is at least equal to such first preset number.
Claim 3
Dependent Claim
46 words
A method of transmitting cyclically formed commands, as claimed in claim 1, in which the balance of scanning cycle pulses remaining within a transmission cycle after formation of a larger command unit is added to the number of pulses counted in the respective following transmission cycle.
Claim 4
Dependent Claim
31 words
A method of transmitting cyclically formed commands, as claimed in claim 1, in which the scanning cycle pulses appearing during a transmission cycle are distributed substantially uniformly throughout such transmission cycle.
Claim 5
Independent Claim
241 words
An apparatus for transmitting cyclically formed commands, in the form of individual pulses, over a transmission channel which is restricted in its transmission capacity, security against interference, or both, comprising, in combination, first means forming each command as a series of pulses each having a unit command value and whose total number represents the command; cyclically operable second means connected to said first means and uniformly distributing the series of pulses in each of successive equal length scanning cycles each having the same possible maximum number of pulses and with the number of pulses of said series and each scanning cycle being not greater than such possible maximum number; a counter connected to said second means and continuously counting said pulses throughout transmission of the command; cyclically operable third means connected to said counter and providing successive equal length transmission cycles whose length is less than that of said scanning cycles; fourth means connected to said counter and operable, responsive to the number of pulses counted in a transmission cycle attaining a first preset number, to form and transmit a command unit whose command value weight is equal to that of a second preset number of said series of pulses whereby, during each transmission cycle, a command unit is formed only if the number of pulses counted during the transmission cycle is at least equal to said first preset number; and means transmitting said command units to a command transmission channel.
Claim 6
Independent Claim
241 words
An apparatus for transmitting cyclically formed commands, in the form of individual pulses, over a transmission channel which is restricted in its transmission capacity, security against interference, or both, comprising, in combination, first means forming each command as a series of pulses each having a unit command value and whose total number represents the command; cyclically operable second means connected to said first means and uniformly distributing the series of pulses in each of successive equal length scanning cycles each having the same possible maximum number of pulses and with the number of pulses of said series and each scanning cycle being not greater than such possible maximum number; a counter connected to said second means and continuously counting said pulses throughout transmission of the command; cyclically operable third means connected to said counter and providing successive equal length transmission cycles whose length is less than that of said scanning cycles; fourth means connected to said counter and operable, responsive to the number of pulses counted in a transmission cycle attaining a first preset number, to form and transmit a command unit whose command value weight is equal to that of a second preset number of said series of pulses whereby, during each transmission cycle, a command unit is formed only if the number of pulses counted during the transmission cycle is at least equal to said first preset number; and means transmitting said command units to a command transmission channel.
Claim 7
Dependent Claim
35 words
An apparatus foR transmitting cyclically formed commands, as claimed in claim 4, in which said first means includes an input buffer; said second means comprising a first gate circuit; said counter being a forward-backward counter.
Claim 8
Dependent Claim
43 words
An apparatus for transmitting cyclically formed commands, as claimed in claim 5, in which said input buffer is connected to the forward-counting input of said counter; said fourth means including a second gate circuit connected to said counter and to said transmitting means.
Claim 9
Dependent Claim
84 words
An apparatus for transmitting cyclically formed commands, as claimed in claim 6, including an output amplifier connected between such second gate circuit and said transmitting means; a restoring buffer connecting the output of said second gate circuit with a backward-counting input of said counter; and a common timing stage controlling said input buffer, said first gate circuit, said second gate circuit and said restoring buffer; the timing sequences supplied to the individual components being geared down relative to each other in a predetermined manner.
Claim 10
Dependent Claim
33 words
An apparatus for transmitting cyclically formed commands, as claimed in claim 7, in which said command transmission channel is a wireless channel for transmitting guiding signals from a ground station to a missile.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |