JPS61165173A - State information management method between systems - Google Patents

Abstract

PURPOSE:To offset no processing load reducing effect of each processor realized by a dispersion processing, by always updating and holding the contents of a storage means by the same latest state information at the same time, and retrieving the contents of the storage means, in case when a processor detects a state in other system. CONSTITUTION:A processor checks a state of an input/output apparatus in an input/output part 2 at a prescribe time interval. The state of the input/output apparatus is collated with the contents of a sense memory 26 by an instruction of a state managing part 25 in order of a retrieval, and if there is no difference in this case, the check is shifted to the next input/output apparatus, and if there is a difference, state information of the input/output apparatus concerned of the sense memory 26 is rewritten. In case when this rewrite has been executed, the process 11 reports it to a processor 3 by an instruction of the state managing part 25. Based on this report, the processor 3 makes a state managing part 23 execute rewrite of state information of the input/output apparatus concerned of a sense memory 24.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a system that is independently controlled by processors in a master-slave relationship, and particularly to a system that can reduce the burden on the processors that control each system. The present invention relates to a state information management method.

Recently, when controlling a terminal device etc. with a program, instead of using one processor to control the entire device, the device is divided into multiple systems by acid function, and each system is controlled by one processor. In many cases, the configuration is such that multiple processors share the processing, reducing the processing load on each processor and coordinating control.

In this case, each system is controlled by an independent processor, but these processors are in a master-slave relationship.
A plurality of slave processors are often controlled by a master processor. That is, a plurality of slave systems are often connected to a main system, and an interface is provided for mutual transmission of control signals, operational status reports, and the like.

In order to control the slave system, the processor of the master system needs to know the status of the slave system, and usually causes the processor of the slave system to report the status of the slave system via the interface. In this case, the burden on the processors of the slave system increases, and it is necessary to perform distributed processing to avoid canceling out the effect of reducing the processing load on each processor.

[Conventional technology]

FIG. 2 is a block diagram showing an example of a circuit of a conventional portable terminal device.

The operating section 1 and the input/output section 2 constitute a system, and are controlled by independent processors 3 and 11. In this case, the operation section 1 is usually provided with a control function so that it can perform comprehensive functions as a portable terminal device, and the input/output section 2
The equipment is equipped with functions that are specialized in controlling input/output equipment.

The processor 3 reads a program stored in the ROM 9 and operates, and operates the program from the keyboard 8 to the keyboard control section 7.
The commands and data that enter through the RAM 4 are stored in the RAM 4 and then outputted, and the display control unit 5 is controlled as necessary to display the display unit 6.
The content is displayed on the interface control unit 1.
The command is given to the processor 11 via the interface controller 14 and the interface controller 14.

The program 4111 reads the program stored in the ROM 12 and operates it, stores this instruction in the RAM 13, then outputs it and processes according to the instruction. For example, data on the magnetic stripe of a bankbook inserted into the inserter 18 via the inserter control unit 17 is read. It also reads data from a card inserted into the card reader 20 via the card reader control section 19.

The processor 11 temporarily stores these read data in the RAM 13, and then transmits the data via the telephone line via the acoustic coupler control unit 21 and the acoustic coupler 22, and stores the received data in the RAM 13.

Then, if necessary, transfer these data to the printer control unit 1.
5 and then sent to the printer 16 for printing.

Further, if necessary, the data is sent to the inserter 18 and written on a magnetic stripe.

The processor 3 of the operation section 1 is the processor 11 of the input/output section 2.
The printer 16 and inserter 1 of the input/output section 2
8. When controlling input/output devices such as the card reader 20 and the acoustic coupler 22, it is necessary to know the status of the input/output devices.

Conventionally, in order to know the status of this input/output device, Brosenona 3
The normal method is to request the processor 11 to send status data via the interface control units 10 and 14, and the processor 11 responds.

Therefore, for example, if print data is given to the printer 16 in order to print on a passbook inserted into the inserter 18,
It is necessary to insert a passbook into the inserter 18, but if the operator is waiting for when to insert the passbook,
The processor 3 requests the processor 11 to send status data via the interface control units 10 and 14, and the state in which the processor 11 responds to this request continues until the passbook is inserted.

[Problem that the invention seeks to solve]

As described above, while the main system waits for a change in the state of the slave system, it will continue to send out requests to send state data via the interface until a change in state occurs. At this time, if the processor of the slave system is performing other processing, for example, if the processor 11 is storing data input from the acoustic coupler 22 in the RAM 13, the load on the processor of the slave system will be the same as that of the main system. There is a problem in that the number of requests increases rapidly due to the response to the request, and processing may not be completed in time.

[Means for solving problems]

The above problem is caused by the following:1. and a means for always updating the status information of the storage unit with the latest information, and a unit that always updates the contents of the storage unit in the system and other systems with the same latest status information at the same time. This problem is solved by the system for managing state information between systems according to the present invention, in which the processor retrieves the contents of the storage means when the processor detects the state in another system.

[Effect]

That is, each system is provided with a sense memory that stores state information and a state management unit that manages the contents of the sense memory so that the contents are always up-to-date. is managed so that they always match.

For this reason, the statuses of the input/output devices in each system are periodically searched, the contents are compared with the contents of the sense memory, and if they are the same, the search proceeds to the status of the other input/output devices.

If different, the contents of the sense memory are rewritten and the contents are notified to other systems.

The notified other systems update their own sense memory with the notified contents. In this way, the latest state information 91 is stored in the sense memory of each system.

When a processor in each system wants to know the status of another system, it refers to its own sense memory. Therefore, data is only transmitted on the interface when there is a change in the state of the input/output device, which reduces the burden on the processor.

〔Example〕

, FIG. 1 is a block diagram of a circuit showing one embodiment of the present invention.

In FIG. 1, a state management section 23 and a sense memory 24 are added to the operation section 1 of FIG. 2, and a state management section 25 and a sense memory 26 are added to the input/output section 2. printer 16 and inserter 1, which are the input/output devices of
8. The state information of the card reader 20 and the acoustic coupler 22 is stored, and the state management section 23 manages the contents of the sense memory 24 so that the information is always the latest information.

Also, the sense memory 26 records status information of the input/output devices of the input/output unit 2. (a) The state management unit 25 manages the contents of the sense memory 26 so that it always has the latest information.

The processor 11 checks the status of the input/output equipment in the input/output section 2 at predetermined time intervals. That is, the status of the printer 16 is determined through the printer control unit 15, the status of the inserter 18 is determined through the inserter control unit 17, the status of the card reader 20 is determined through the card reader control unit 19, and the status of the acoustic coupler 22 is determined through the acoustic coupler control unit 21. Check each condition.

The states of the input/output devices are sequentially retrieved one by one and sent to the state management section 25 and the sense memory 26, and are compared with the contents of the sense memory 26 according to instructions from the state management section 25. If there is no difference, the process moves to the next input/output device, and if there is a difference, the status information of the corresponding input/output device in the sense memory 26 is rewritten.

When this rewriting is performed, the processor 11 reports it to the processor 3 via the interface control units 14 and 10 according to the instruction from the state management unit 25.

Based on this report, the processor 3 sends the status management unit 23 the following information:
The status information of the corresponding input/output device in the sense memory 24 is rewritten.

When the processor 3 wants to know the status of the input/output equipment of the input/output section 2, it searches the sense memory 24 and does not request a report from the processor 11 via the interface control section 10.14.

In this embodiment, since the main system is the operation unit 1 and the slave system is the input/output unit 2, it is not necessary to store the status information of the input/output devices of the operation unit 1 in the sense memory 24, but for example, the processor 11 When the processor 3 requires state information of the keyboard 8, the processor 3 checks the state of the keyboard 8 at predetermined time intervals, and similarly stores the information in the sense memory 2.
The latest information is stored in 4.

Then, according to an instruction from the state management section 23, the information is reported to the processor 11 via the interface control section 10.14, and the processor 11 causes the state management section 25 to rewrite the state information of the keyboard 8 in the control memory 26.

〔Effect of the invention〕

As explained above, when the present invention reduces the load on each processor by distributing processing to a plurality of processors, it is possible to prevent the load reduction from being canceled out due to mutual information exchange.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a circuit showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a circuit of a conventional portable terminal device. In the figure, 1 is an operation unit, 2 is an input/output unit, 3.11 is a processor, and 4.13 is a RAM. 5 is a display control section; 6 is a display section; 7 is a keyboard control section; 8 is a keyboard; 9 and I2 are ROMs. 10 and 14 are interface control units, 15 is a printer control unit, 16 is a printer, 17 is an inserter control unit, 1B is an inserter, 19 is a card league control unit, 20 is a card reader, 21 is an acoustic coupler control unit, 2
2 is an acoustic coupler 1, 23.25 is a state management section, 24.
26 is a sense memory.

Claims (1)

[Claims] In an apparatus comprising a plurality of systems each independently controlled by a processor, and in which data is exchanged between the processors via an interface between the systems, a storage means for storing state information of the own system and other systems; Each system is provided with a means for updating the state information of the means, and when the processor of each system detects a change in the state of its own system, it updates the contents of its own storage means to the latest state information, and also updates the state change. An inter-system state information management method characterized in that the processor of the other system is configured to notify the other system, and the processor of the other system updates the state information held in its own storage means based on the notified state change information. .