DE1512569C3 - Process for the secure transmission of binary coded data in blocks - Google Patents
Process for the secure transmission of binary coded data in blocksInfo
- Publication number
- DE1512569C3 DE1512569C3 DE19671512569 DE1512569A DE1512569C3 DE 1512569 C3 DE1512569 C3 DE 1512569C3 DE 19671512569 DE19671512569 DE 19671512569 DE 1512569 A DE1512569 A DE 1512569A DE 1512569 C3 DE1512569 C3 DE 1512569C3
- Authority
- DE
- Germany
- Prior art keywords
- repetition
- data
- transmitter
- character
- acknowledgment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1848—Time-out mechanisms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1657—Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L2001/125—Arrangements for preventing errors in the return channel
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Description
3. Verfahren nach Anspruch 1, dadurch ge- holmenge mitteilt, wird es dem Empfänger mögkennzeichnet, daß der Empfänger nach dem 35 lieh, bei überflüssigen Wiederholungen die wie-Empfang eines Wiederholzeichens, wenn dem derholten Datenblöcke einfach zu unterdrücken. Empfang keine Aussendung einer Falschquittung Da der Sender unmittelbar anschließend an die vorausgegangen ist, ohne darauffolgenden Emp- Wiederholungsaussendung nur dann zur laufenden fang des die Wiederholmenge abgebenden Zei- Datenübertragung übergeht, wenn er für den ersten chens eine Datenwiederholung auslöst. 40 Datenblock eine Richtigquittung erhält, und da der3. The method according to claim 1, characterized in that gel quantity informs the recipient that it is possible that the recipient borrowed after 35, if the repetitions were superfluous, the like-reception of a repetition character, if the repetitive data blocks can simply be suppressed. Reception no transmission of a false acknowledgment Since the sender immediately afterwards to the has preceded, without subsequent re-transmission only to the current one The catch of the time, which emits the repeat set, passes over data transmission if it is for the first chens triggers a data repetition. 40 data block receives a correct acknowledgment, and since the
Sender die laufende Datenübertragung nur beibehält,The transmitter only maintains the current data transmission,
wenn alle weiteren Quittungen Richtigquittungen sind, sendet der Empfänger für jeden unterdrücktenif all further receipts are correct receipts, the receiver sends for each suppressed one
Datenblock eine Richtigquittung aus. Auf diese 45 Weise bleibt das ganze Dalenüberlragungssystem inA correct acknowledgment from the data block. In this way the whole 45 Dalenüberlragungssystem remains in
seinem normalen Systemablauf, und es wird durchits normal system flow and it will go through
Die Erfindung betrifft ein Verfahren zur gesicher- eine überflüssige Wiederholung nur soviel Zeit verlöten blockweisen Übertragung binär kodierter Daten ren, wie zur Aussendung der wiederholten Datenvon einem Sender zu einem Empfänger, mit Fehler- blocke notwendig war.The invention relates to a method for securely soldering a superfluous repetition only so much time block-wise transmission of binary-coded data, such as for the transmission of the repeated data from a sender to a receiver, with error blocks was necessary.
korrektur durch Wiederholung einer der jeweiligen 5o Hat der Empfänger wenigstens eine Falschquil-Signallaufzeit der Leitungsschleife Sender—Empfän- tung ausgesendet und empfangt ei danach ein ger—Sender proportionalen oder annähernd propor- Wiederholzeichen vom Sender, so wertet er das dem tionalen Datenmenge, mit Enlscheidungsrückmel- Wiederholzeichen folgende Zeichen nicht aus und dung vom Empfänger zum Sender und bei welchem nimmt unter Beachtung der im Hauptpatent angegeder Sender zur Ankündigung einer Dateuwiederho- 55 benen Annahmebedingungen die wiederholten Dalung wenigstens ein Wiederholzeichen aussendet, tenblöcke auf. Die genannte Bedingung besteht nach Hauptpatent 1 207 425. darin, daß der erste wiederholte Datenblock mit demCorrection by repeating one of the respective 50 If the receiver has sent at least one false equilibrium signal transit time of the line loop transmitter-reception and then receives a ger-transmitter proportional or approximately proportional repeat signals from the transmitter, it evaluates the tional data volume with a decision feedback - re wood oaks following characters not and dung from the receiver to the transmitter and wherein the transmitter angegeder in the main patent to announce a Dateuwiederho- takes in compliance 55 surrounded acceptance conditions the repeated Dalung at least one re-wood oak emits tenblöcke on. According to the main patent 1 207 425, the condition mentioned is that the first repeated data block with the
Das in dem Häiiptpaleni angegebene Datenüber- letzten empfangenen übereinstimmen muß. Auf diese tragungsverfahren zwischen sich durch sehr kurze Weise wird vermieden, daß eine Datenwicderholung, Verlustzeiten im Wiederholungsfälle aus und. gestat- 6o deren Wicdeiholzeichen nach erfolgter Falschquittet somit eine optimale Ausnutzung der knappen lung beim Empfänger eintrifft, die aber nicht auf Übertragungskanäle, Die vorliegende Erfindung gibt Grund dieser Falschquittung sondern duich die Vernunmehr die Möglichkeit, diese Verlustzeiten noch fälschung einer vor ihr liegenden Richtigquittung weiter herabzudrücken, was erfindungsgemäß da- ausgelöst wurde, vom Empfänger aufgenommen werdurch geschieht, daß der Sender zwischen jedem ^5 den kann.The data about the last received data specified in the half-table must match. This transfer process between them in a very short way avoids data repetition, loss of time in repetition cases and. This allows the recipients to make optimal use of the shortage after the wrong acknowledgment has been received, but this does not affect the transmission channels That which was triggered according to the invention is recorded by the receiver, which happens because the sender can between each ^ 5 den.
Wiederholungszeichen und dem ihm folgenden Da- Im folgenden wurde der Fall behandelt, daß Stö-Repetition sign and the following there- In the following, the case was dealt with that disturbance
tcnblock ein Zeichen aussendet, aus dem die Anzahl rungen des Rückkanals zu überflüssigen Wiedcrhoder zur Wiederholung gelangenden Datenblöcke her- lungen des Senders führen. Aber auch Störungen destcnblock sends out a character from which the number of rings in the return channel becomes redundant result in data blocks that are to be repeated by the sender. But also disturbances of the
Hinkanals können dazu führen, daß ein normaler Datenblock in ein Wiederholzeichen verwandelt und als solches vom Empfänger erkannt wird. In diesem Falle· folgt dem Wiederholzeichen kein Zeichen, das eine Aussage über die Menge der wiederholten Datenblöcke macht. Diese Tatsache wertet der Empfänger als Übertragungsfehler und leitet eine normale Datenwiederholung ein. Es kann aber auch umgekehrt der Fall eintreten, daß bei einer Wiederholungssendung auf dem Hinkanal nur das die Wiederholmenge enthaltende Zeichen gestört wird. Hier erkennt der Empfänger die Störung dieses Zeichens und leitet durch das Ausgeben weiterer Faischquittungen eine nochmalige Datenwiederholung ein.Forward channels can cause a normal data block to be transformed into a repeat character and is recognized as such by the recipient. In this case, the repeat character is not followed by a character that makes a statement about the amount of repeated data blocks. The recipient evaluates this fact as a transmission error and initiates normal data repetition. But it can also be the other way around the case may arise that with a repeat transmission on the forward channel only the repetition amount containing characters is disturbed. Here the recipient recognizes the disturbance of this symbol and initiates another data repetition by issuing further confirmation receipts.
Das Wiederholzeichen und das ihm folgende Zeichen können zu einem Datenblock zusammengefaßt oder zu einem solchen durch Fehlerprüfbits ergänzt werden. Die Zusammenfassung zu einem Datenblock hat den Vorteil, daß auch die Zeichen im Blocktakt empfangen werden können, das Ergänzen mit Fehjo lerprüfbits hat den weiteren Vorteil, daß beide Zeichen gegen Fehler gesichert werden können.The repeat character and the character following it can be combined to form a data block or can be supplemented with error checking bits. The summary of a data block has the advantage that the characters can also be received in block time, supplementing with Fehjo lerprüfbits has the further advantage that both characters can be protected against errors.
Claims (2)
unterdrückt und für jeden der unterdrückten Da- 25 Dieser variablen Wiederholmenge wegen blieb tenblöcke eine Richtigquittung an den Sender ab- dem Empfänger bisher beim Feststellen einer übergibt, flüssigen Wiederholung (Empfang eines Wiederhol-Transfer from the receiver to the sender and in the event that unnecessary repetitions are caused by poking around by the sender to announce a data transfer on the repetition used for the transmission of the acknowledgment, at least one repeat character return channel. These disturbances can e.g. B. sends out, according to main patent 1207 425, there - a given by the recipient, the error-free characterized by that the transmitter 15 transmission of a data block reporting correct between each repetition character and his receipt falsify such that the transmitter sends one character as the following data block. Recognizes false acknowledgment and then sends a data from which the number of initiates repetition. A data block is thus obtained and the repetition is initiated without the recipient having given the recipient a command to do so after receiving a repetition. The amount of data blocks detected by characters when this reception is not outside a repetition is preceded by a false acknowledgment, but depends on the respective signal transit time of the loop thus differ from case to case,
suppressed and for each of the suppressed data blocks due to this variable repetition quantity, a correct acknowledgment was sent to the sender from the
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET26501A DE1207425B (en) | 1964-07-02 | 1964-07-02 | Method for the secure transmission of binary coded data |
DET0033212 | 1967-02-15 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1512569A1 DE1512569A1 (en) | 1969-05-22 |
DE1512569B2 DE1512569B2 (en) | 1974-09-05 |
DE1512569C3 true DE1512569C3 (en) | 1975-05-28 |
Family
ID=25999896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19671512569 Expired DE1512569C3 (en) | 1964-07-02 | 1967-02-15 | Process for the secure transmission of binary coded data in blocks |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1512569C3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0732387B2 (en) * | 1985-02-23 | 1995-04-10 | 株式会社日立製作所 | Data retransmission method |
-
1967
- 1967-02-15 DE DE19671512569 patent/DE1512569C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1512569B2 (en) | 1974-09-05 |
DE1512569A1 (en) | 1969-05-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
E77 | Valid patent as to the heymanns-index 1977 | ||
8340 | Patent of addition ceased/non-payment of fee of main patent |