US3593279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and circuit therefor for evaluation of received coded messages
Assignee: Siemens AG
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Filing: 1967-09-28
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Granted: 1971-07-13
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Expires: 1987-09-28
Abstract
Abstract A method and circuit therefor to evaluate successive received individual coded information signals identified by predetermined combinations of signals selected from a plurality of fixed frequency signals. Hold signals are transmitted between successive individual coded information signals and are evaluated at the receiver which, in the absence thereof, produces a corresponding error indication signal that may be applied to the transmitter. The hold signals comprise a particular combination of signals selected from said plurality of fixed frequency signals, and individual signals comprising said particular combination also comprise some of the predetermined combinations of signals corresponding to the individual coded information signals.
Inventors
- 👤 Gerhard Pumpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:20
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/02; H04L27/00; H04L27/26; H04L27/30
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
111 words
A method for determining the correctness of coded information signals produced by a transmitter comprising: transmitting successive individual coded information signals identified by the simultaneous transmission of at least two predetermined signals (group I, group II) selected from a group of signals (f1-f4) of different frequencies to a receiver; transmitting hold signals identified by the simultaneous transmission of at least two predetermined signals (f1) each of which may be simultaneously transmitted with other signals selected from the group of signals of different frequencies to identify individual coded information signals to the receiver; evaluating received signals; producing an error indicating signal when the transmitted coded information signals are evaluated to be incorrect.
Claim 2
Independent Claim
111 words
A method for determining the correctness of coded information signals produced by a transmitter comprising: transmitting successive individual coded information signals identified by the simultaneous transmission of at least two predetermined signals (group I, group II) selected from a group of signals (f1-f4) of different frequencies to a receiver; transmitting hold signals identified by the simultaneous transmission of at least two predetermined signals (f1) each of which may be simultaneously transmitted with other signals selected from the group of signals of different frequencies to identify individual coded information signals to the receiver; evaluating received signals; producing an error indicating signal when the transmitted coded information signals are evaluated to be incorrect.
Claim 3
Dependent Claim
28 words
The method recited in claim 1 further comprising: applying the error indicating signal to the transmitter; indicating at the transmitter the application thereto of an error indicating signal.
Claim 4
Dependent Claim
26 words
The method recited in claim 2 further comprising: blocking the transmission of further coded information signals when an error indicating signal is applied to the transmitter.
Claim 5
Dependent Claim
36 words
The method recited in claim 1 further comprising: transmitting a series of coded information signals corresponding to a predetermined format; producing an error indicating signal when the received coded information signals deviate from the predetermined format.
Claim 6
Dependent Claim
46 words
The method recited in claim 4 further comprising: transmitting a predetermined number of coded information signals correspoNding to the predetermined format; counting the received coded information signals; producing an error indicating signal when the counted received coded information signals do not correspond to the predetermined number.
Claim 7
Dependent Claim
28 words
The method recited in claim 5 further comprising: applying the error indicating signal to the transmitter; indicating at the transmitter the application thereto of an error indicating signal.
Claim 8
Dependent Claim
20 words
The method recited in claim 2 further comprising: indicating acoustically at the transmitter the application of an error indicating signal.
Claim 9
Dependent Claim
20 words
The method recited in claim 7 further comprising: indicating visually at the transmitter the application of an error indicating signal.
Claim 10
Independent Claim
127 words
A method for determining the correctness of transmitted individual coded information signals comprising: transmitting successive individual coded information signals identified by the simultaneous transmission of at least two predetermined signals (group I, group II) selected from a group of signals (f1-f4) of different frequencies to a receiver; transmitting hold signals identified by the simultaneous transmission of at least two predetermined signals (f1) each of which may be simultaneously transmitted with other signals (f2-f4) selected from the group of signals of different frequencies (f1-f4) to identify individual coded information signals to the receiver; evaluating a series of two successively received signals; producing an error indicating signal at the receiver when one of the two successively received signals of the series is not evaluated to be a hold signal.
Claim 11
Independent Claim
127 words
A method for determining the correctness of transmitted individual coded information signals comprising: transmitting successive individual coded information signals identified by the simultaneous transmission of at least two predetermined signals (group I, group II) selected from a group of signals (f1-f4) of different frequencies to a receiver; transmitting hold signals identified by the simultaneous transmission of at least two predetermined signals (f1) each of which may be simultaneously transmitted with other signals (f2-f4) selected from the group of signals of different frequencies (f1-f4) to identify individual coded information signals to the receiver; evaluating a series of two successively received signals; producing an error indicating signal at the receiver when one of the two successively received signals of the series is not evaluated to be a hold signal.
Claim 12
Dependent Claim
28 words
The method recited in claim 9 further comprising: applying the error indicating signal to the transmitter; indicating at the transmitter the application thereto of an error indicating signal.
Claim 13
Dependent Claim
26 words
The method recited in claim 10 further comprising: blocking the transmission of further coded information signals when an error indicating signal is applied to the transmitter.
Claim 14
Dependent Claim
245 words
In a telecommunication system for the transmission of coded message signals, each of which comprises one of at least two groups of predetermined modulation characteristics whereby between each message signal, as well as in pauses between transmissions, a rest signal consisting of one modulation characteristic of each of the at least two groups of modulation characteristics is transmitted, and wherein in the transmission system there is, for each modulation characteristic, a transmission contact, and in the receiving system there is a supervisory system for carrying out a check for contact errors of the transmission contacts on the transmission side through supervision of the modulation characteristics of the received signals, and having a signalling means adapted to be actuated upon the determination of an error, the improvement comprising: means connecting the transmission contacts for message signals pertaining to a group of modulation characteristics with one another in a circuit so that the transmitter for the modulation characteristics of this group is actuated only for the rest signal when all transmission contacts are in their normal positions, and in such a way that for the existence of a contact error the transmission contact of another modulation characteristic is activated, and a receiver means having therein a supervisory system for evaluating the rest signals received between message signals, said supervisory systems including means for producing an error signal when at least one modulation characteristic assigned to a message signal is sent to thereby indicate erroneous transmission contact operation.
Claim 15
Dependent Claim
245 words
In a telecommunication system for the transmission of coded message signals, each of which comprises one of at least two groups of predetermined modulation characteristics whereby between each message signal, as well as in pauses between transmissions, a rest signal consisting of one modulation characteristic of each of the at least two groups of modulation characteristics is transmitted, and wherein in the transmission system there is, for each modulation characteristic, a transmission contact, and in the receiving system there is a supervisory system for carrying out a check for contact errors of the transmission contacts on the transmission side through supervision of the modulation characteristics of the received signals, and having a signalling means adapted to be actuated upon the determination of an error, the improvement comprising: means connecting the transmission contacts for message signals pertaining to a group of modulation characteristics with one another in a circuit so that the transmitter for the modulation characteristics of this group is actuated only for the rest signal when all transmission contacts are in their normal positions, and in such a way that for the existence of a contact error the transmission contact of another modulation characteristic is activated, and a receiver means having therein a supervisory system for evaluating the rest signals received between message signals, said supervisory systems including means for producing an error signal when at least one modulation characteristic assigned to a message signal is sent to thereby indicate erroneous transmission contact operation.
Claim 16
Dependent Claim
120 words
The circuit arrangement according to claim 12, wherein: said transmission contacts are arranged so that in each case after assignment of a modulation characteristic, said contacts return to the rest position and connect the modulation characteristics corresponding to the rest conditioN to the transmission path, said contacts being in an operative position upon the occurrence of disturbances in the transmission contacts whereby the modulation characteristics corresponding to the rest condition will no longer be communicated to the transmission path, and further comprising: a logical connection circuit in said receiver means which evaluates two directly successive signals, of which one must correspond to the rest condition, and means for transmitting an error indication signal in the absence of a rest condition.
Claim 17
Dependent Claim
39 words
The circuit arrangement according to claim 13 having a means for reproducing an error indication signal upon the sensing of a disturbance by the logical connection circuit and means for providing an indication responsive to said error indication signal.
Claim 18
Dependent Claim
25 words
The circuit arrangement according to claim 13, wherein said transmission contacts produce a rest signal when all of said contacts are in an open condition.
Claim 19
Dependent Claim
22 words
The circuit arrangement according to claim 14, wherein said transmission contacts produce a rest signal when all of said contacts are closed.
Claim 20
Dependent Claim
43 words
The circuit arrangement according to claim 14 comprising in addition a counter means for counting the number of signals transmitted in a predetermined format as said signals are received and for producing an error indication when said count varies from a predetermined value.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |