JPH0357052A - Remote program supply selecting system - Google Patents

Abstract

PURPOSE:To reduce the communication for supply request by always repeatedly transmitting data from a transmission system to a reception system to eliminate a need of supply request from the reception system to the transmission system. CONSTITUTION:A transmission system 1a consists of a program storage part 3 where a program which can be executed in a computer system is stored, an encoding means 5 which encodes this program to a code capable of information exchange of communication, a transmitting means 6 which transmits the program encoded by the encoding means 5 to one of plural channels of a communication means 13, and a repeated program transmitting means 4 which repeatedly executes the operation of the encoding means 5 and the transmitting means 6. The executable program stored in the program storage part 3 is repeatedly transmitted by the repeated program transmitting means 4. Thus, the problem is resolved that the same request is transmitted many times by the communication means to compress the communication means from a reception system 2 to a transmission system 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote program supply selection method, and more particularly to a remote program supply selection method for supplying programs in a distributed processing system using a plurality of computers. [Prior Art] Conventionally, in order to supply programs that can be executed between multiple computer systems, the system requesting the supply requests the system supplying the program to supply the program, and then In the past, it was common for a supplying system to supply an executable program to a system that requested the supply.

[Problem to be solved by the invention]

In the conventional remote program supply selection method described above, the procedure for requesting supply is always performed, so when supplying a basic program essential to a computer system, the same request is transmitted many times using communication means. However, there was a problem in that the communication means from the receiving system to the transmitting system was overwhelmed.

Furthermore, since the program is supplied in response to a request, there is a problem in that the program cannot be supplied if the communication means is only in one direction, from the transmitting system to the receiving system. [Means for Solving the Problems] The remote program supply selection method of the present invention includes a program storage section that stores executable programs on a computer system, and a program stored in the program storage section that encodes and communicates the program. an encoding means for converting data into a format that allows information exchange by the encoding means; a transmitting means for transmitting the data converted and output by the encoding means via a communication means; and processing by the encoding means and transmitting means. at least one transmission system having a repetition program transmission means for repeatedly executing a process; and data transmitted by one of the transmission systems to be received from among the data transmitted from the transmission system via the communication means. a selection means for selecting reception of the data, a reception means for receiving the data transmitted by the transmission means, a decoding means for decoding the data received by the reception means into an executable program, and the decoding means a program storage unit that stores an executable program decrypted by the decryption unit; a storage unit storage unit that stores the executable program decrypted by the decryption unit in the program storage unit; and an execution transfer means for transferring an execution procedure to the executed executable program.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing the structure of an embodiment of the present invention, and FIG. 2 is a block diagram showing the structure of an embodiment of the present invention.
FIG. 3 is a flowchart showing the processing flow of one embodiment of the encoding means 5 in FIG. 1; FIG. 3 is a flowchart showing the processing flow of one embodiment of the repetitive program transmission means 4 in FIG. 1;
FIG. 4 is a flowchart showing the processing flow of one embodiment of the decoding means 8 in FIG. The remote program supply selection system of FIG. 1 is separated from the transmitting systems 1a-lb and the receiving system 2, which is connected to the transmitting systems 1a-1b via a communication means 13 having a plurality of channels. However, the communication means 13 has a plurality of channels from the transmitting systems 1a to 1b to the receiving system 2, and represents a communication means capable of simultaneously transmitting a plurality of communication contents. The transmission system 1a also includes a program storage unit 3 that stores executable programs in the computer system, and an encoding unit that encodes the executable programs stored in the program storage unit 3 into codes that can exchange information by communication. 5. Transmitting means 6 for transmitting the program encoded by the encoding means 5 to one of the plurality of channels of the communication means 13; Repetitive program transmitting means 4 for repeatedly executing the operations by the encoding means 5 and the transmitting means 6; It is ovalized from.

Further, the receiving system 2 includes a selection means 1 for selecting a channel to receive from among the plurality of channels of the 1,000 communication stages 13.
2. receiving means 7 for receiving the data transmitted by the transmitting means 6 via the channel selected by the selecting means 12;
a decoding stage 8 for restoring the data encoded by the encoding means 5 and received by the reception stage 7 into an executable program; and a program storage section 11 for storing the program.
, a storage unit storage unit 9 that stores the executable program decrypted by the decryption unit 8 in the program storage unit 11; It is composed of an execution migration means 10 for transferring.

Next, the operation will be explained.

In the transmission system 1, the executable program stored in the program storage unit 3 is transmitted repeatedly through 1,000 stages of program transmission 4.
It is sent repeatedly by Referring to FIG. 3, the repetitive program transmitting means 4 is realized by repeating the encoding of the program by the encoding means 5 (step 41) and the transmission of the resulting code by the 1,000 stages 6 (step 42). has been done.

In this embodiment, the encoding means 5 generates a program start code as shown in FIG. Step 53) generates a program end code (Step 54).The program start code, program code, and program end code thus generated are transmitted by the transmitting means 5 through one channel of the communication means 13. The program is then transmitted to the receiving system 2, and this is repeatedly executed by the repetitive program transmitting means 4.

In the reception system 2, the selection means 12 selects the communication stage 1.
Select one of the three channels. Then, the receiving means 7 receives the data transmitted by the transmitting means 6 to the channel selected by the selecting means 12, and notifies the decoding means 8 of the received data. As shown in FIG. 4, the decoding means 8 receives a reception notification from the reception stage 7 (step 81), and determines whether this is a program start code or not (step 82).
), if it is not the program start code, the process returns to step 81 to receive a reception notification. Since the data transmitted by the transmitting means 6 was transmitted by the repetitive program transmitting means 4, when the encoding means 5 is called again by the repetitive program transmitting means 4, a program start code is generated and decoded. The means 8 receives the program start code and proceeds to a process of receiving a reception notification (step 83). Thereafter, since the code received in step 83 is either a program code or a program end code, this is determined (step 84), and if it is not a program end code, it is a program code and is therefore rejected. Decrypt and create an executable program (step 85)
, and passes it to the storage section storage means 9, and if it is a program end code, the decoding process is completed.

The executable program decoded by the decoding means 8 is stored in the program storage unit 11 by the storage unit storage stage 9.
After that, execution is started by the execution transition means 10. As shown above, when there are multiple transmitting systems, the selecting means 12 selects the channel to be received from among the channels included in the communication means 13 shown in FIG. It is possible to select any program from among the programs sent from the sending system, receive it, and execute it. In this embodiment, the receiving system has been explained, but in general, the present invention can be practiced without changing the scope even if there are a plurality of receiving systems. In this case, the transmitting means 6 may be configured to receive signals simultaneously by the receiving means 7 of a plurality of receiving systems 2. Even in this case, the receiving means 7 of the plurality of receiving systems 2 do not interfere with each other.

In this way, because the transmitting system always repeatedly transmits data, there is no need for the receiving system to issue a supply request to the transmitting system, and the structure of the transmitting system that is the supply side and the receiving system that requests the supply is reduced. The precepts can be greatly simplified compared to the conventional method.

In addition, by applying this to programs that are supplied frequently, communication for supply requests can be reduced, and multiple receiving systems can simultaneously receive programs supplied from the transmitting system without interfering with each other. By taking an ellipse that can be received, communications for supply requests can be further reduced. Also,
Since the means of communication is used only in one direction, even in situations where only one-way communication is possible, such as a configuration consisting of a program supply station with a large supply range and a receiving system that only has the ability to disturb it, the remote program cannot be programmed. Supply becomes possible. Furthermore, by having a selection means only on the receiving system side, multiple programs can be supplied only by switching processing on the receiving system side, and the increased burden caused by switching between multiple programs is also avoided on the transmitting system. This does not apply to other receiving systems, and it has no effect on the system as a whole. Therefore, a wireless system or the like can be used as a communication means, and a program supplied from multiple high-power transmitting systems can be selected and received by an unspecified number of receiving systems. [Effects of the Invention] As explained above, the remote program supply selection method of the present invention allows the transmitting system to constantly repeatedly transmit data to the receiving system, thereby reducing the supply of data from the receiving system to the transmitting system. There is no need to issue a request, and communication for supply requests can be reduced.

Furthermore, since only one-way communication from the sending system to the receiving system is used as a communication means, situations where only one-way communication is possible from the sending system to the receiving system, such as when supplying a program with a large supply range, Even in the case of a station and a receiving system that only has the ability to receive it, it has the effect of making remote program supply possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the implementation of an embodiment of the present invention, FIG. 2 is a flowchart of the processing of the 1,000-stage encoding 5 shown in FIG. 1, and FIG. Flowchart of Processing FIG. 4 is a flowchart of decoding stage 8 of FIG. 1. 1... Transmission system, 2... Receiving system, 3...
・Program storage unit, 4... Repetitive program transmitting means, 5... Code converting means, 6... Transmitting means, 7... Receiving means, 8... Decoding means, 9... Storage unit Storage means, 1o... Execution transition means, 11... Program storage section, 12... Selection means, 13... Communication means.

Claims (1)

[Scope of Claims] A program storage unit that stores a program executable on a computer system, and a code that encodes the program stored in the program storage unit and converts it into data in a format that allows information exchange by communication. a transmitting means for transmitting the data converted and output by the encoding means via a communication means, and a repetitive program transmitting means for repeatedly executing the processing by the encoding means and the processing by the transmitting means. at least one transmission system; a selection means for selecting reception of data transmitted by one of the transmission systems to be received from among data transmitted from the transmission system via the communication means; a receiving means for receiving transmitted data; a decoding means for decoding the data received by the receiving means into an executable program; and a program for storing the executable program decoded by the decoding means. a storage unit; a storage storage unit for storing an executable program decrypted by the decoding unit in the program storage unit; and an execution unit for transferring an execution procedure to the executable program stored in the program storage unit. A receiving system having a transfer means.