JPH09311790A - Data processor and exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute the IPL(initial program loading) of mass programs and data to a work memory circuit in a short time and to easily back up and store data in the work memory circuit. SOLUTION: Application programs from a magnetic disk device 5 and standard station data e stored in nonvolatile manner in a flash memory circuit 4. A MPU 1 loads and stores standard station data from the flash memory circuit 4 on a DRAM circuit being the work memory circuit. The MPU 1 temporarily stores work data in the DRAM circuit 3 by using the application program of the flash memory circuit 4 and standard station data of the DRAM circuit 3 and executing a work operation, and controls a line exchange circuit 6. Standard station data against the storage terminal of the DRAM circuit 3 is updated by update station data from a maintenance personal computer PC at need and station data after update is backed up and stored in the flash memory circuit 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing device and a switching device, and more particularly to updating data.

[0002]

2. Description of the Related Art In recent years, various types of private branch exchanges (PBX) have been developed and are widely used, from small capacity to large capacity. These PBXs have, for example, an apparatus configuration for performing program processing in order to efficiently perform circuit switching processing.

For example, FIG. 2 shows a PB having a very simple structure.
It is a schematic block diagram of X. In FIG. 2, PBX is
It is composed of a microprocessor circuit (MPU) 1, a work memory circuit 8, a ROM circuit 9, and a circuit switching circuit 6. The ROM circuit 9 stores a main program, application programs, standard station data, and the like in a nonvolatile manner in advance. This application program is a program for controlling circuit switching. The standard station data is stored in the circuit switching circuit 6 by a terminal (for example,
This is, for example, extension telephone number data of a station that is equipped as standard when the PBX is installed with the telephone as a station. When power is supplied to this PBX, the IPL (Initi
A program, standard station data, and the like stored in the ROM circuit 9 in a non-volatile manner are read out by the al Program Load) and stored in the work memory circuit 8.

The work memory circuit 8 is composed of a DRAM having a large storage capacity, and temporarily stores programs, standard station data, work data and the like. The work memory circuit 8 may be composed of SRAM as one method, but since the capacity is smaller than that of DRAM, the program,
If the storage capacity of standard station data, work data, etc. is large, the SRAM circuit is not suitable because the circuit scale becomes large. The MPU 1 uses the program of the work memory circuit 8 to control the circuit switching with respect to the circuit switching circuit 6. Further, the standard station data of the work memory circuit 8 is changed as station data in accordance with the operating environment in which the extension number, service class (local departure, extension service, international telephone service) and the like are changed.

Therefore, when the operation is started, the standard station data in the work memory circuit 8 is changed. The work memory circuit 8 needs to store and retain the changed data as station data and back up the storage and retention in case of power supply interruption. Since it is necessary to periodically rewrite and refresh the existing information, it is not possible to maintain the memory retention by a battery, a capacitor or the like even when the power supply is cut off. In addition, backup storage from the work memory circuit 8 to the ROM circuit 9 is also impossible because it is a read-only memory.

Therefore, FIG. 3 is a schematic block diagram of the PBX for enabling the changed station data in the work memory circuit 8 to be backed up and stored. This figure 3
At the PBX, the MPU 1, the circuit switching circuit 6,
It comprises a work memory circuit 8 and a magnetic disk device 5. A program and standard station data are stored in the magnetic disk device 5 in advance in a nonvolatile manner.
Thus, the program and the standard station data are stored in the work memory circuit 8 composed of the DRAM circuit. The standard station data is changed to station data by the start of operation. The changed station data can be stored in the magnetic disk device 5 for backup. Therefore, even if the power supply to the work memory circuit 8 is cut off, the station data can be backed up in a non-volatile manner by the magnetic disk device 5.

[0007]

However, in the configuration of FIG. 3, since the IPL is performed from the magnetic disk device 5 to the work memory circuit 8, it takes a long time to load when the information amount of the program or the standard station data is large. There is a problem that it takes time. Further, since the standard station data is changed as necessary when the operation is started, the changed station data must be backed up and stored. Therefore, if the station data is a large capacity PBX that exceeds 10,000 lines,
There is also a problem that it takes a long time to store the changed station data in the magnetic disk device 5.

From the above, the realization of the data processing device and the exchange device in which the large-capacity program and the data can be IPLed to the work memory circuit in a short time and the data of the work memory circuit can be easily backed up and stored. Has been requested.

[0009]

Accordingly, a first aspect of the present invention provides
Standard memory for starting the operation of the device, and a flash memory means for storing a program in a nonvolatile manner in advance,
A central control means for controlling the operation of starting the operation using the program with the start of power supply to the own device, reading the standard data, and storing the standard data in the work memory means,
It is a data processing device comprising work memory means for volatilely storing the standard data read from the flash memory means, and external data fetching means for fetching external data. Then, the central control means generates generated data by the standard data stored in the work memory means by an execution operation using the program of the flash memory means and the standard data of the work memory means, or the external data. The above problem is solved by performing control to update any of the external data taken in by the data taking-in means and storing the updated data in the flash memory means as backup.

With such a configuration, the load time can be shortened by downloading only the standard data excluding the program from the flash memory means to the work memory means at the start of the operation of the apparatus. Further, when the standard data first downloaded and set in the work memory means is updated to either generated data or external data fetched from the outside, the updated data is backed up and stored in the flash memory means. Because you can
The latest data can always be saved, and since backup work is performed from the work memory means to the flash memory means, the time required for backup can be shortened compared to saving to the magnetic disk device. .

A second aspect of the present invention is an exchange apparatus for accommodating a plurality of terminals and performing an exchange operation, wherein standard data for accommodating terminal setting for starting operation of the apparatus and a program are stored in a nonvolatile manner in advance. Central control for controlling the flash memory means and the program to be started by starting the power supply to the device itself, reading the standard data for accommodating terminal setting, and storing it in the work memory means. Means, work memory means for volatilely storing the read standard data for accommodating terminal setting, and external data fetching means for fetching external data. The central control means executes the accommodation terminal setting standard data stored in the work memory means using the program of the flash memory means and the accommodation terminal setting standard data of the work memory means. Control is performed to update either the generated data generated by the operation or the external data captured by the external data capturing means, and the updated accommodation terminal setting data is backed up and stored in the flash memory means after being updated. .

With such a configuration, when the setting data (for example, extension number or service class) of many terminals is managed without downloading the program to the work memory means, the work memory is changed from the flash memory means. The load time to the means can be shortened.

When the standard data for accommodating terminal setting is updated to the accommodating terminal setting data, the latest data can always be saved, and the backup storage from the work memory means to the flash memory means is possible. It can be done in a short time.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described with reference to the drawings. Therefore, in the present embodiment, a preferred example in which the present invention is applied to a switching device will be shown. FIG. 1 is a functional configuration diagram of the exchange apparatus according to the present embodiment. In FIG. 1, the exchange device includes MPU 1 and RO.
The M circuit 2, the DRAM circuit 3, the flash memory circuit 4, the magnetic disk device 5, the circuit switching circuit 6, the input / output circuit 10, and the maintenance personal computer PC are connected by a bus line 7. ing.

The ROM circuit 2 stores a basic program, which is the most basic for operating the exchange apparatus.
This basic program does not change,
Used by access from U1 and also used to control other circuits. The magnetic disk device 5 stores application programs, standard station data, and the like in advance, and when power is supplied to the entire switching device, MP
When the IPL command is received by the command from U1, the stored application program, standard station data, etc. are read and stored in the flash memory circuit 4. Further, the magnetic disk device 5 backup-stores the station data after updating the standard station data from the flash memory circuit 4 and the updated application program.

The flash memory circuit 4 is a memory circuit composed of a flash memory element. DRA
While M is a read / write memory that requires a memory holding operation at any time, this flash memory can hold data without storing power once the data is stored. Compared with an SRAM, which is an unnecessary write / read memory, it has an advantage that it has a simple structure and can be manufactured at a very low cost. Such a flash memory circuit is disclosed, for example, in Oki Electric Research and Development, January 1996, No. 169, Vol. 63, N
o. 1, page 21-24 "3.3V single power supply 16M
It is also possible to use the one shown in "Bit Flash EEPROM".

The flash memory circuit 4 includes an MPU 1
The application program and the standard station data are stored by the IPL from the magnetic disk device 5 according to the command from the. Further, the flash memory circuit 4 is an MPU.
In response to the instruction from 1, the stored application program and standard station data are stored in the DRAM circuit 3 as a work memory circuit. Also, the updated station data from the DRAM circuit 3 is backed up and stored by an instruction from the MPU 1. Further, the flash memory circuit 4 controls the circuit switching circuit 6 by using the application program by the access from the MPU 1.

The DRAM circuit 3 takes in the standard station data from the flash memory circuit 4 and stores the standard station data, as well as the MPU 1
The work data obtained by the program processing of is temporarily stored. This standard station data is composed of, for example, extension number data, service class data, etc., as shown in FIG. 4, so that it is updated at any time when the operation of the present switching device is started. Specifically, for standard station data, for example, the telephone number assigned to a certain terminal (station) line can be changed, or an outside line call can be made when a certain terminal (station) is provided only as an extension call service. The service class is changed to and the data is managed and stored in the DRAM circuit 3 as station data. This station data is stored in the DRAM circuit 3
Inside, it is stored and managed in a separate storage area of work data obtained by executing the MPU 1, the basic program, and the application program.

The circuit switching circuit 6 accommodates a telephone line, a facsimile line, etc. as a terminal (station), receives control for connecting to a necessary line under the control of the MPU 1, and also executes by executing an application program of the MPU 1. , The standard station data for each terminal (station) is updated and set as station data, and the updated station data itself is managed and stored in the DRAM circuit 3.

The input / output circuit 10 is an interface circuit for connecting the maintenance personal computer PC to the bus line 7 inside the exchange, and is mainly used for maintenance personal computer PC to update standard station data. To create the updated station data, and
It is stored in the RAM circuit 3 and updated. Further, the maintenance personal computer PC can not only create the updated station data, but also the application program change data when a part of the content of the application program is desired to be changed. It is given to the flash memory circuit 4 through the circuit 10 and a part of the application program is changed.

(Operation): Next, the operation of the exchange apparatus of FIG. 1 will be described. First, when power is supplied to the exchange device, the MPU 1 uses the basic program stored in the ROM circuit 2 in a non-volatile manner to store the application program and the standard station data stored in the magnetic disk device 5. Etc. are IPLed and stored in the flash memory circuit 4.

The IPL from the magnetic disk device 5 to the flash memory circuit 4 is an IPL that needs to be performed once when the present switching device first starts operating, and once the application program and the standard station data are stored in the flash memory circuit 4. When the power supply to the present switching device is cut off and then the power is re-supplied after is stored, the application program of the flash memory circuit 4 and the standard station data or station data are already stored in a non-volatile manner. Re-I from the magnetic disk device 5 to the flash memory circuit 4
PL is unnecessary. When the power supply to the exchange is started for the second time or later, the standard station data is updated and stored and managed in the flash memory circuit 4 as station data.

Next, when the application program and standard station data are stored in the flash memory circuit 4,
Next, the MPU 1 uses the basic program stored in the ROM circuit 2 in a non-volatile manner, and uses the flash memory circuit 4
The standard station data is loaded from the DRAM circuit 3 to the DRAM circuit 3 and stored in a predetermined storage area of the DRAM circuit 3.
The application program stored in the flash memory circuit 4 in a non-volatile manner receives an access request from the MPU 1 while being stored in the flash memory circuit 4 without being loaded into the DRAM circuit 3.

By doing so, it becomes unnecessary to load the flash memory circuit 4 to the DRAM circuit 3. Further, even when the content of the application program is changed, it can be changed in the flash memory circuit 4 based on the change instruction from the MPU 1.

When the standard station data is stored in the DRAM circuit 3, the MPU 1 performs an operation using the basic program stored in the ROM circuit 2, and the intermediate data in the middle of the operation is used as work data in the DRAM circuit 3 In the work area, generates a necessary circuit switching control command, and gives it to the circuit switching circuit 6 for control. In this circuit switching circuit 6,
First, specifications of a terminal station (for example, a telephone) accommodated in the DRAM circuit 3 are set based on standard station data stored and managed, and a call signal from the terminal station is processed to perform a line connection operation. Done.

When the data of the terminal station stored and managed in the DRAM circuit 3 as standard station data is changed in response to a request from the terminal station accommodated therein or a request from an administrator who manages the present switching device, , The changed station data is given to the input / output circuit 10, and the DRAM circuit 3 stores and manages it. The updated station data is created, for example, by a maintenance personal computer PC, and this station data is applied to the input / output circuit 10 to update the standard station data stored and managed in the DRAM circuit to the station data. .

The station data updated in this way is DR
When stored in the AM circuit 3, the MPU 1 gives a backup storage instruction to the DRAM circuit 3 and the flash memory circuit 4 so that the station data is backed up in the flash memory circuit 4. This is to prevent the updated station data stored in the DRAM circuit 3 from disappearing due to the interruption of the power supply to the exchange.

The backup storage from the DRAM circuit 3 to the flash memory circuit 4 is faster than the storage speed in the magnetic disk device 5 because the access speed of the flash memory circuit 4 is faster than that of the magnetic disk device 5. It can be carried out. Moreover, even if the power supply is cut off, the contents stored in the flash memory circuit 4 are not lost, and therefore the updated station data is not wasted. Therefore, it is preferable that the MPU 1 promptly store the updated station data in the DRAM circuit 3 in the flash memory circuit 4 as a backup as soon as the station data is updated. Even if the updated station data is frequently backed up and stored as described above, the access time is short and the frequency of hindering other processing is low.

The updated station data stored in the flash memory circuit 4 does not interfere with the execution of the application program, and is backed up and stored in the magnetic disk device 5 in a time zone as needed, so that the flash memory circuit 4 can be stored. Even if the internal data disappears due to a failure, the updated station data will not be lost.

(Effects of the Embodiments of the Present Invention) According to the above-described embodiments of the present invention, the flash memory circuit 4 after the application program and the standard station data or the station data are stored in the flash memory circuit 4. The download from the DRAM circuit 4 to the DRAM circuit 3 can be performed in a shorter time than the download from the magnetic disk device 5 and more quickly.

The station data updated from the standard station data to the station data in the DRAM circuit 3 can be easily backed up from the DRAM circuit 3 to the flash memory circuit 4, and can be stored in the conventional magnetic disk device 5. Backup storage time can be shortened compared to backup storage. Further, the station data in the DRAM circuit 3 is easily updated to the latest contents by giving the updated station data created by the maintenance personal computer PC to the DRAM circuit 3 from the input / output circuit 10.

Furthermore, the contents of the DRAM circuit 3 can be easily back-up stored in the flash memory circuit 4, and the backup storage time can be shortened as compared with the conventional backup storage in the magnetic disk device 5. Further, the application program stored in the flash memory circuit 4 can be changed by the maintenance personal computer PC.

Further, since the DRAM circuit 3 is adopted as the work memory circuit, it is easy to realize a large capacity, and it is suitable for realizing a switching device for switching circuits of many terminals. .

(Other Embodiments) (1) In the above-described embodiments, the application program stored by the IPL in the flash memory circuit 4 from the magnetic disk device 5 is not downloaded to the DRAM circuit 3. , The flash memory circuit 4 is configured to be accessed by the MPU 1. However, as another embodiment, for example, the application program is downloaded to the DRAM circuit 3 in the same manner as the standard station data is downloaded to the DRAM circuit 3. Memory management to MPU
It may be configured to access the application program of the DRAM circuit 3 from 1.

(2) Further, the DRAM of the above-mentioned embodiment
The circuit 3 is suitable for use as a work memory circuit because it is easy to increase the capacity and has a high access speed.
A RAM circuit may also be used.

(3) Further, the MPU 1 of the above-mentioned embodiment
It is also preferable to form the flash memory circuit 4 and the flash memory circuit 4 in an integrated LSI package to form a CPU for miniaturization. One of the construction methods is disclosed, for example, in Oki Electric Research and Development, January 1996, No. 169, Vo. l6
3, No. 1. "MCU with built-in flash EEPROM"
Is shown in

(4) Further, the configuration of the above embodiment is
By applying to the central processing unit of the invention of the "double redundant system for information processing and the exchange system" described in the specification and drawings of Japanese Patent Application No. 8-31931, a functional information processing system and high reliability can be obtained. A switching system can also be implemented. In addition, the configuration of the present embodiment will be described in Japanese Patent Application No. 8-64019.
It is also possible to realize a central processing system having a high processing capacity by applying it to the central processing unit of the invention of "central processing system" described in the specification and drawings of the publication.

(5) Further, in the configuration of FIG. 1, an example in which it is applied to a switching device has been described, but as another simpler configuration, the MPU 1 and the DRA as a work memory circuit are used.
The data processing device including the M circuit 3 and the flash memory circuit 4 downloads standard data from the flash memory circuit 4 to the DRAM circuit 3,
The data updated by the M circuit 3 can be easily backed up and stored.

[0039]

As described above, according to the first aspect of the invention, the flash memory means stores in advance non-volatile standard data and programs for starting the operation of the apparatus, and the central control means
By controlling the standard data stored in the work memory means to the generated data or the external data and storing the updated data in the flash memory means as backup, the IPL time can be shortened and the latest data can be obtained. Backup can be stored easily with a simple structure.

Further, according to the second aspect of the invention, it is possible to shorten the IPL time of the switching device that accommodates and exchanges a plurality of terminals, improve the backup storage performance, and improve the performance of the switching device.

[Brief description of drawings]

FIG. 1 is a functional configuration diagram of a switching device according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a conventional exchange device.

FIG. 3 is a schematic configuration diagram of a conventional exchange device.

FIG. 4 is an explanatory diagram of standard station data and station data according to the embodiment.

[Explanation of symbols]

1 ... MPU, 2 ... ROM circuit, 3 ... DRAM circuit, 4 ...
Flash memory circuit, 5 ... Magnetic disk device, 6 ... Circuit switching circuit, 7 ... Bus line, 10 ... Input / output circuit, PC
… A personal computer for maintenance.

Claims (2)

[Claims] 1. Standard data for starting operation of the apparatus,
A flash memory means that stores a program in a non-volatile manner in advance, and an operation is started using the program when the power supply to the device is started, and the standard data is read out and stored in the work memory means. A data processing device comprising: a central control means for performing control to perform the above; a work memory means for volatilely storing the standard data read from the flash memory means; and an external data fetching means for fetching external data. The central control means may generate the standard data stored in the work memory means by the execution operation using the program of the flash memory means and the standard data of the work memory means, or the external data. Control to update to any of the external data captured by the data capture means, and update A data processing device characterized in that new data is backed up and stored in the flash memory means. 2. In a switching device which accommodates a plurality of terminals and performs a switching operation, standard data for accommodating terminal setting for starting the device operation,
A flash memory means for storing a program in a non-volatile manner in advance, and the operation is started by using the program when the power supply to the device is started, and the standard data for setting the accommodation terminal is read out to Central control means for controlling to store in the memory means, work memory means for volatilely storing the read standard data for accommodating terminal setting, and external data fetching means for fetching external data are provided. Means generates the accommodating terminal setting standard data stored in the work memory means by an execution operation using the program of the flash memory means and the accommodating terminal setting standard data of the work memory means. Control to update to either data or external data captured by the external data capture means An exchange device, which stores the updated accommodation terminal setting data in the flash memory means as a backup.