DE1947078B2 - PROCEDURE FOR THE TRANSMISSION OF SECURE, DIGITAL SELECTIVE AND COLLECTIVE CALL COMMANDS WITH ANSWER - Google Patents

Description

3. Data transmission process after the start / stop circuit 1 is in position Claim 1 or 2, characterized in that "Stop". By a received start signal, e.g. B. to check the operational readiness of the transition from a binary 1 to a binary 0 Receiving station and / or the correct function- the start / stop circuit 1 is switched to "start" and speed of the transmission path of the command call 45 thus the control of the subsequently received contains a criterion (blind call criterion) which is initiated in the signal by the clock generator 2 free-receiver the transmission of an acknowledgment call is given. The clock signal now controls one without displaying the command. electronic step switch 3, which by its

Output signals the mechanical or electrical 50 setting of the selective call number 4 and a bit switch 5 and thus the set code number (selective call number) of this station bit for bit and using switch 6 of the

The invention relates to a binary data comparison circuit 7 feeds. Tn the comparison switching method for transmitting an address 7 is now the received signal with the and command calls of any length, in which a from th selective call number is compared bit for bit for the electronic step switch 3 to check for transmission errors. The redundancy formed by stim-address and command calls corresponds to the two signals, so the output shows that there is also transmission and the comparison circuit 7 does not have a signal for the one called. If stations differentiate the received address with one of the two compared binary characters, an output signal of the comparison circuit 7 is compared by the address assigned to the called station, which will send the called station an acknowledgment call to the start / stop j reception via the comparison block 8 emits and arrives from circuit 1, a signal is triggered that switches the calling station to transmit the entire start / stop circuit 1 to "stop". Through., _; message is repeated until the 65 the output signal of this circuit is the y called station an acknowledgment call is present. Basic position of this station assumed. -% - li

Calling methods are known in which the binary parallel to the arrival of the received signal in the

transmitted call is stored in the receiver comparison circuit 7 runs the command part, _ -,

the information in a clocked command - switched to "Start" so that the electronic

memory 9 Furthermore, the entire information step switch 3, which is now in its rest position

mation has taken over the switch 28 in the redundancy, again receives the clock signal, and

computer 10. Since the selective call number of the circuit, as in the case of reception, the setting of the selective

and thus the bmär sequence of the selective call number 5 controls call number 4 and the bit switch 5,

is known, the first part of the impulse can be during the time of querying the selective call number

telegram containing the address through which the information is sent via switch 6 to the

Comparison circuit? be checked, but not switch 22 and from there to the last switch 17,

the following characters of the practically any directly to the binary output 20. Simultaneously with the

selectable commands. After the aforementioned io through-connection of the selective call number through the

The address is also checked using the electronic step switch 3, the binary

electrical step switch 3, the comparison lock 8 output signal from switch 6 also via the

switched on, so that switch 19 and switch 28 to the redundancy

of the pulse telegram the output signal of the processor 10.

glcichsschalt7 no longer the start / stop switch 15 After querying the selective call number through device 1 can respond. With the "the step switch 3 the query of the entry of the command part of the information is command memory 9 via the memory query 24. the switch 11 is closed so that the command The switch 25 is for the time of the command memory 9 is clocked for this time. After the closed, while switch 6 is open, the entry of the last binary character of the command 20 information flow from the memory query 24 to the switch 11 is opened so that the input line of the command memory 9 via the binary output 20 and to the redundancy computer - 10 is the same as for the address. Due to the command information in the command memory query 24, the command memory 9 is stored and the Emp command display 3 written and stored in the memory 9 after the redundancy check 25 is queried and received via the matrix 12 Output pulse can be displayed. After the 'telegram, the iden table is when the entire pulse telegram enters the input pulse telegram. The calculation of the redundancy computer 10 must have a certain redundancy in a manner similar to that for the end position, provided that the information has not entered the information, both address and has been disturbed. ₃₀ command passes via the switch 28 to the right end position of the redundant computer redundancy computer 10 where it dissolves the rake 10 after running an information dissolves into the process in a known manner from. After the through-Redundanzprüftor 14 a release command for running the command part of the pulse telegram is the switch 15, the z. B. with the switching through of the switch 28 is opened, as is switch 22, while the battery voltage, the switch 23 in the command display 35 is closed. This is achieved.

13 pending information on the matrix 12 for the redundancy computer 10 for possibly Brings display. Advantageously, the following signals are blocked at the same time and the up to this signal the input of the Koromando memory 9 this time calculated binary character sequence, the Blocked until the display is deleted, thus so-called redundancy, via the output of the Any subsequent disturbed commands to the 40 redundancy computer and switch 23 to the already correctly stored command does not reach binary output 20, which leads directly to corruption can. at the end of the sending of the command combination

The release signal of the redundancy test torsion takes place. After the last one was sent out

14 the automatic receive / send-toggle redundancy bits has the electronic step switch 3 device 16 controlled and from the previous reception * S again reached its end position, which it, because the initial position to transmit position - delayed automatic receive / transmit switchover 16 in or without delay - switched back to the The process of giving the acknowledgment is initiated: Switches to the basic reception position. this happens Time of delivery of the redundancy check signal also via the start / stop circuit 1, which also the step switch 3 assumes a position. the one 50 separates the clock signal. With this process the Switching the star / stop circuit 1 causes the acknowledgment, d. H. the return of the recommented again the clock generator 2 turns off and the genen information as an acknowledgment, electronic off Step switch 3 in its basic closures.

position resets. By addressing the target, this system will now issue a command,

automatic receive / send switchover 16 becomes 55 d. H. act as a transmitting station, a similar one runs,

in this case not the basic position reception, 'signal nut off, as described for the acknowledgment,

but the basic transmission position of the circuit with the difference that in this case

taken. directly into the automatic reception / transmission

The output signal of the automatic reception / circuit 16 intervened and the transmission cycle off

Send toggle 16 controls the switches 17, 18. ^{6o is} solved. The information to be transferred in

and 19 on, which means that the binary output 20 must be in the form of a command or a message

switched and the binary input 21 separated. of course previously entered in a memory

Furthermore, the comparison will have been established by this signal. You can use the memory already

Lock 8 actuated so that any command memory 9 available from the V can use the

output signals coming in the same circuit, the 65 through a corresponding coding matrix, which is in the

Can not influence start / stop circuit 1. Figure is not shown, for the transmission case

With the output signal the automatic reversing is carried out. After the direct triggering of a

circuit is also the start / stop circuit 1 transmission cycle is determined by the basic setting of the

5 6

slectronic step switch 3 the automatic memory is transferred and from there to the

Receive / send switchover 16 is displayed in this case. A subsequent fake

»Receive« is switched, and in this position for commands is saved, but can

the time of receipt of the receipt is recorded. not be displayed because of the absence

If the 5 of the release signal of the redundancy check is acknowledged within the specified time

If the transmission is sent, the processing of the transmission into the display memory 27 does not take place.

Acknowledgment signal just like the processing of a For this case the information in the

Pulse telegram that transmit a command, command memory 9 only for the time from the end of the

target. The difference, however, is that the command input up to the redundancy check

Redundancy check signal the automatic reception / io are stored. For the rest of the time it is

Send changeover 16 affects the memory content irrelevant, which leads to the switching

repeated transmission is prevented, it can lead to paging.

the basic position »reception« is used again

took. If the acknowledgment signal arrives disturbed, it will be described in more detail. Through a collective call

if the redundancy test tor 14 does not have an enable signal 15, all or a group of receivers should be

issued, whereby after the specified time the addressed regardless of their selective call number

automatic reception / transmission switchover 16 to chen. For a decade selective call

"Send" is switched back and the number system is sent through the binary

Impulse telegram in the scheme already described, coding so-called pseudo-tetrads (digits 10

performs. 30 to 15) for each digit of the selective call number.

A circuit not shown in FIG. 1 for receiving a collective notification is one of the takes over all tasks of the deletion, e.g. comparison circuit 7 parallel evaluation of the Command display and resetting the circuit expediently for the first selective memory and the redundancy computer. As already provided for the phone number for all stations described, it is necessary that the called »5 common digit of the pseudo-tetrad addresses. Station is synchronized. To reduce For the following address mile for which the Phase errors for this purpose, the clock comparison circuit 7 is advantageously disabled, encoder 2 from an oscillator and a frequency (through the response of the pseudo-tetrad switching divider composed, with the oscillator on tion) can consist of any combination of digits Multiples, but at least the five- 3 ° are sent, preferably one digit of the times the clock frequency oscillates. It is favorable to pseudo-tetrad. The evaluation of the command to operate the oscillator in continuous operation and the redundancy takes place as described above. Start / stop circuit acts on the frequency divider when the arrangement responds to the collectors allow. number can by means of suitable switching measures

In practical operation it can happen that the acknowledgment is staggered in time sequence in the case of a collective call in the command memory of a recipient (e.g. entKommando is stored because it has not yet been deleted by the operator using the digit sequence of the call number of the operator , and a receiving station) automatically receives an acknowledgment with a new command. To avoid submitting your or your collective number,
This new command in the receiving station is also lost for the purpose of checking the quality of the function and also to prevent the station sending the transmission link and / or the ready-to-operate command from being blind to the command from the receiving station "Com, as already described, is continuously repeated (since mandos are to be transmitted to the recipient. You will not receive an acknowledgment from the called station at the sending station like normal commands), as shown in FIG. 2 reproduced 45 acts, is on the receiving station to the outside. the command memory 9 is processed by a simple imperceptible, ie it is just a display memory 27 and a release gate 26 added if a response is triggered without one. In this way, the first notification that was received was received by the recipient. These condition commands in the display memory 27 for the operator are expediently fulfilled in that the operator is still available. The new running 50 command can, after checking for correctness, write the command in the command memory 9, which is written, but not over-decoded in the matrix 12 in the command memory 9 and is therefore not displayed. although by the redundancy check signal of the

This is done in such a way that the IS in the Korn switch is closed and the acknowledgment is issued.

The command stored in the mando memory is triggered by the 55. In a circuit arrangement with

Release signal of the redundancy test gate 14 that the one display memory is the one previously transmitted

Release gate 26 is briefly released, not overwritten in the display command.

1 sheet of drawings

Claims (2)

and after the run-in for correct claims: receipt is checked. This method has the disadvantage that a transmission error only occurs after 1. Binary data transmission method for the complete incoming call to be recognized Transmission of an address and command call 5 can, which means a loss of transmission speed Length, 'with which to check for speed and readiness to receive: is connected. the end There is also no transmission error from address and British patent specification 977134 Command call formed redundancy with over-known, a check redundancy from address and will carry and with the in the called information part to be transmitted, so that in the Stations the received address with one of the IO receivers in a manner known per se an error called The address assigned to the station can be checked is like, the called station in orderly The invention is now based on the object upon receipt of an acknowledgment call emits a method for transmitting secure commands and from the calling station the outside dues optionally to individual stations (selective call) or the entire message is repeated as long as 15 to a whole group of stations (collective call) to create an acknowledgment call from the called station that has the disadvantages of the known calls, characterized in that the method does not have and nevertheless makes use of the advantages received when a selective call is placed. Address without storage with the address of the This task is performed in a method of Receiver is compared and in the case of non-20 initially mentioned type according to the invention Match at least one bit of the resolved that when a selective call is sent the Address the recipient immediately in the idle-received address without saving with the is placed in a state that a comparison is made when an address of the recipient is sent and when Collective call at least a part of the address call mismatch of at least one bit of the contains a criterion for a collective call and the address of the recipient immediately goes to sleep that when this collective call criterion is recognized it is set that when a collective call is sent in the receivers no reset in the at least part of the address call a criterion Idle state during the further information for a collective call contains and that when recognizing intake takes place and that the acknowledgment calls from this collective call criterion in the receivers are not the address of the 30 sending the acknowledgment mf reset to the idle state during the Station and a command part and one from further information inlet takes place and that the both formed redundancy exist. Acknowledgment calls from the address of the acknowledgment call 2. Data transfer procedure after the sending station and a command part and Claim 1, characterized in that there are redundancies in one of the two, Called stations delay elements before 35 Developments of the invention are included in the documents that are characterized in such a coordinated manner. are that the stations called by an advantageous arrangement for implementation proper receipt of the transmitted acknowledgment of the data transmission method according to the invention processing calls in the sending the collective call is shown in Fig. 1 and is to be used in the following in Station arrive one after the other. 40 its function will be described in more detail.