JP2001125789A - Program download method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent complication in management on the side of a managing device and the malfunction of a program on the side of a terminal in the case of revising the task program of the terminal on the basis of download. SOLUTION: When revising the task program of the terminal (I/F device 5, for example), a managing device 4 initializes an area 43A corresponding to this terminal, stores all programs including the revise task program, performs check sum operation concerning all data in the area 43A and downloads all the programs and the result of the check sum operation to the terminal. After a receiving area 55A is initialized, the terminal writes the download program and simultaneously writes all the data of the area 55A in a memory 54. After this write is completed, the terminal performs check sum operation concerning all the data in the memory 54, compares the result with the result of the check sum operation on the side of the managing device and discriminates whether download is right or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program download method for downloading a program to be executed on a terminal such as a public telephone to the terminal.

[0002]

2. Description of the Related Art A terminal such as a public telephone of this type is connected to a management device via a telephone line. The management device that manages each terminal stores a program executed in each terminal in its own database. Here, if it is necessary to update the program on the terminal, first update the program of the terminal in the database, download the updated program in the database to the terminal via the telephone line, and download the program of the terminal. Rewrite.

[0003] Since such a terminal program is composed of a plurality of task programs, it is necessary to individually download each task program to the terminal and update the corresponding task program of the terminal to a new version of the task program. Is being considered.

[0004]

However, when each task program of a terminal is individually downloaded and updated, a plurality of task programs having different versions are mixed for each terminal on the management device side. There is a problem that management on the side becomes complicated. In addition, a malfunction may occur on the terminal side due to a mixture of a downloaded new version of the task program and an undownloaded old version of the task program. For this reason, there is a demand for a download method that can prevent the management device from becoming complicated in management and prevent a malfunction caused by a mixture of a downloaded program and a non-downloaded program on the terminal side. Therefore, an object of the present invention is to prevent management of the management apparatus from becoming complicated when updating a task program of a terminal based on download, and to prevent a malfunction on the terminal side.

[0005]

In order to solve the above-mentioned problems, the present invention comprises a plurality of terminals and a management device. The terminals have a first memory and are stored in the first memory. The management device has a plurality of second memories in which the respective programs of the plurality of terminals are respectively stored. Download the revision program for the second memory and download the first
In the system for updating a program in the memory of the above, when a request for revision of at least one task program among the plurality of task programs constituting the program of the first memory of the terminal occurs, the management device causes the A step of revising the task program of the second memory; a step of accessing the terminal to be revised from the management device after the revision of the task program; and all tasks including the task of revising the second memory to the accessed terminal to be revised. It is characterized by having a download step of downloading a program and an update step of updating all task programs in the first memory of the terminal to be updated with the downloaded task program.

In this case, the revision step includes a step of initializing a second memory corresponding to the terminal to be revised when a request for a task program revision of the terminal occurs, and a step of updating the task in the initialized second memory. Storing each task program including a program in each of them, and performing a checksum operation on all data including the task program in the second memory, and the downloading step includes a second step. A step of downloading the task program and the checksum calculation result in the memory to the terminal to be updated, and the updating step includes, when receiving the downloaded task program, a first memory having the same capacity as the second memory.
Initializing the memory, and writing the receiving task program to the initialized first memory;
When the receiving task program is written in the first memory, a step of performing a checksum operation on all data in the first memory, a comparison between the checksum operation result and the downloaded checksum operation result, and a comparison result Is returned to the management device. Also,
The updating step includes, upon receiving the downloaded task program, initializing a third memory having the same capacity as the second memory, and writing the receiving task program into the initialized third memory. And sequentially writing all data in the third memory to the first memory having the same capacity as the third memory.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a system to which a program download method according to the present invention is applied.

As shown in FIG. 1, the present system manages a public telephone 1, a central office 2, and a public telephone 1, which are terminals to which programs (program data) are to be downloaded. When a program of the public telephone 1 which is arranged between the telephone station 2 and the management apparatus 4 and downloaded from the management apparatus 4 is received, the received program is transmitted to the public telephone 1 via the telephone station 2. An I / F device (interface device) 5 for rewriting the program of the public telephone 1 is provided. The I / F device 5 is also a terminal to which the program is to be downloaded, and upon receiving a program directly downloaded from the management device 4 and directed to itself, rewrites its own program.

[0009] Here, the management device 4 controls outgoing / incoming calls between the control unit 41 for controlling the whole of the management device 4 and each public telephone via the I / F device 5, and also controls the I / F device. 5, a serial I / F 42 for performing data communication with the public telephone 5 and a database 43 for storing data such as program data of each public telephone and program data of the I / F device 4.
It comprises a display unit 44, an input unit 45 such as a keyboard, a printer 46, and a power supply unit 47 for supplying power to the above units.

The management device 4 manages a plurality of public telephones as described above. In response to an incoming call based on an outgoing call of each public telephone, the management device 4 is stored in a memory of each public telephone and communicates with the public telephone. The usage data at the time is input and stored in the database 43, and the failure data by the self-diagnosis of the public telephone itself is inputted and stored in the database 43, and each public telephone is managed based on the storage state of the database 43.

The database 43 of the management device 4 stores programs and parameters (setting data) of each public telephone, and when a program is revised in each public telephone, the management device 4 uses the I / F. When the public telephone is called by the device 5 and the public telephone responds, the program data of the public telephone and the parameters of the public telephone are read out from the database 43 and read from the I / O.
The program is sent to the F device 5, and the I / F device 5 transmits the program data and the like to the corresponding public telephone so that the program of the corresponding public telephone is rewritten with a new program. The database 43 of the management device 4 also stores the program of the I / F device 5, and when the program is revised in the I / F device 5, the revised program is stored in the database 4.
3 and read to the I / F device 5 to download the I / F
The program of the device 5 is updated.

FIG. 2 is a block diagram of a public telephone 1 constituting the present system. In FIG. 2, a public telephone 1, which is a terminal, is connected to the telephone station 2 as described above, and can make a call using the IC card 3.
As shown in FIG. 2, the public telephone 1 includes a CPU 11 and a C
A flash memory 12 in which a program executed by the PU 11 is stored and which can be electrically written and erased;
, A line interface 14, a communication circuit 15, a handset 16, a display unit 17, a display control circuit 18, a keyboard 19 such as a dial key, and an IC card reader for reading and writing data from and to the IC card 3. Writer 20
(Hereinafter, referred to as a card reader 20).

Here, when the user inserts the IC card 3 into a card insertion slot (not shown) of the card reader 20, the card reader 20 detects the insertion of the IC card 3 and notifies the CPU 11. In this case, the CPU 11 controls the card reader 20 based on the execution of the program in the flash memory 12 to read the frequency data (value information) stored in the memory (not shown) of the IC card 3.

If the IC card 3 has a residual number, the CPU 11 controls the line interface 14 to capture the line. If the telephone is off-hook at this time, the dial tone from the telephone station 3 is transmitted to the line interface 14,
It is transmitted to the handset 16 via the communication circuit 15 and is listened to by the user. Here, when the user dials the other party number by operating the dial keys on the keyboard 19, the CPU 11 detects this and sends it out to the line interface 14 and sends it out as a dial signal from the line interface 14 to the telephone station 2. As a result, the call of the other party is made, and when the other party answers the call, a call is started between the user and the other party. At the start of the call and during the continuation of the call, the frequency data is subtracted from the memory of the IC card 3 by the arrival of the charging signal from the telephone station 2 or the well-known autonomous charging process inside the public telephone 1.

The use data such as the number of the IC card and the frequency of the call when the user makes a call is stored in the RAM 13 of the public telephone 1 as described above, and the CP of the public telephone 1 is used.
U <b> 11 periodically transmits the usage data stored in the RAM 13 to the management device 4 and stores the usage data in the database 43. When receiving its own program data downloaded from the management device 4 via the I / F device 5, the CPU 11 rewrites the program in the flash memory 12 with the received new program.

FIG. 3 is a block diagram showing the configuration of the I / F device 5 provided between the telephone station 2 and the management device 4. I /
The F device 5, as shown in FIG.
And a plurality of sub-control units 60 connected to the main control unit 50 and performing outgoing / incoming call control and data communication for each of the plurality of lines accommodated in the line group Ln. Each sub-control unit 60
Controls three line I / Fs, respectively. Note that two lines are accommodated in one line I / F.

As shown in FIG. 3B, the main control unit 50 includes a CPU 51, a mask ROM 52 storing a loading program executed by the CPU 51, and the like.
Serial I for performing serial data communication with the management device 4
/ F53 and main control unit 50 executed by CPU 51
Flash memory 54 in which a program for the main control unit 50 is stored and a program for the main control unit 50 is temporarily stored, which is downloaded from the management device 4. And an LED control circuit 56 for lighting an LED that is not
51, flash memory 54, RAM 55, etc.
It is connected to the.

On the other hand, the sub-control unit 60 is connected to the main control unit 50 via the bus BUS1 and temporarily stores data transferred to and from the main control unit 50;
CPU 62, a mask ROM 63 in which a loading program executed by the CPU 62 is stored, a flash memory 64 in which a program for the sub-control unit 60 is stored and which can be electrically written and erased, and downloaded from the management device 4 A CPU 65, a flash memory 64, a RAM 65 and a RAM 65 for temporarily storing a program and the like for the sub-control unit 60, and an LED control circuit 66 for lighting an LED (not shown) during data communication.
Are connected to the dual port RAM 61 via the bus BUS2. Under the control of the CPU 62, the bus BUS2 includes a relay control unit 71 for controlling a line relay (not shown) for responding to an outgoing call to each public telephone or an incoming call from each public telephone via the accommodated line. 81, DT detectors 74 and 84 for detecting a tone such as dial tone (DT) from each line, modems 73 and 83 for performing data communication via each line, and serial I / Fs 72 and 82 are connected. I have.

(A) First Embodiment (Download of Program from Management Device 4 to Public Phone 1) The database 43 of the management device 4 stores the program of each public telephone as a terminal as described above. If it becomes necessary to update the program of the public telephone, the program of the public telephone in the database 43 is revised and stored. The control unit 41 reads out the stored program from the database 43, attaches an identification code thereto, and, together with the telephone number of the corresponding public telephone, a serial I / F 42.
To the I / F device 5 via the.

CPU 51 of main control unit 50 of I / F device 5
Receives the program data via the serial I / F 53 by executing the program in the mask ROM 52 and recognizes the program data as a program for a public telephone based on the identification code of the received program data. 60 dual port RAMs 61
Write to. The CPU 62 of the sub control unit 60 controls the mask RO
By executing the program of M63, the program data written in the dual port RAM 61 is sequentially read and written in the RAM 65.

Here, the CPU 62 recognizes the program stored in the RAM 65 as the program of the public telephone from the identification code, and indicates the download destination transmitted from the main control unit 50 via the dual port RAM 61 to the public telephone. When a telephone number is input, the corresponding public telephone is called by controlling one of the relay control units to capture the line and sending the telephone number as a dial signal to the captured line. When the public telephone responds to the call, the program data is sequentially read from the RAM 65 and output to one of the modems, so that the program data is downloaded from the modem to the public telephone via the corresponding serial I / F. Is rewritten with new program data.

Here, the program in the flash memory 12 of the public telephone 1 is divided into a plurality of task programs, and each task program can be revised. When revising a certain task program of a public telephone, the management device 4 temporarily saves each task program in the program area of the public telephone to be revised in the database 43 to a work area in the database 43, and then stores the corresponding program area in the data “ Initialize with FF "H (hexadecimal). Thereafter, the revised task program is stored in the corresponding program area, and the task program not to be revised is taken out of the work area and stored in another area of the corresponding program area.

Next, a checksum operation is performed on all data including the data “FF” H in the corresponding program area, and the checksum data and all program data in the corresponding program area are sent to the I / F device 5. . Upon receiving the download data from the management device 4, the I / F device 5 downloads the received data to the revision target public telephone as described above. In this case, the CPU 11 of the public telephone 1, which is the telephone targeted for the revision, executes the loading program in an area different from the download target program in the flash memory 12, so that the program reception area of the RAM 13 first stores the data "FF" H Initialize with

Thereafter, the received task program data is received and sequentially written in the reception area of the RAM 13, and at the same time, all data in the reception area of the RAM 13 is transferred to the program area of the flash memory 12. When all the program data has been written to the RAM 13 and all the data written to the RAM 13 has been transferred to the program area of the flash memory 12, the public telephone performs a checksum operation on all the data in this program area, and this operation result Is compared with the checksum calculation result received from the management device 4 side.
Then, when the two calculation results match, it is considered that the program has been normally downloaded, and the processing by the new program in the flash memory 12 is executed thereafter.

Here, the capacity of the receiving area of the RAM 13 and the program area of the flash memory 12 of the public telephone 1 in which the program is downloaded from the management device 5 and the program is written are the same. 43 is the same as the capacity of the public telephone program area. Also, the RA of the public telephone 1
M13 includes, in addition to the reception area, a write pointer indicating a write address of program data for the reception area;
An area for storing a reception pointer indicating an address of a reception area written to the flash memory 12 and a pointer indicating a write address of the flash memory 12 is provided. The CPU 11 executes the loading program of the flash memory 12 to write the program into the reception area of the RAM 13 according to the value of each pointer of the RAM 13 and, at the same time, sequentially starts from the data of the start address of the reception area of the RAM 13 To transfer data to

As described above, the database 4 of the management device 4
When the public telephone task program 3 is revised and downloaded to the flash memory 12 of the public telephone, all task programs including the revised task program are downloaded. As a result, the management device can manage a plurality of task programs of different versions as one program, so that the management of the management device can be prevented from becoming complicated, and all the task programs can be collectively stored in the public telephone 1. Since the program is downloaded, the public telephone 1 can prevent a malfunction caused by a mixture of the downloaded program and the non-downloaded program.

When each of the task programs for the public telephone is downloaded to the public telephone 1, the management device 4
Then, the corresponding program area of the database 43 is initialized with data “FF” H, and the initialized database 43 is initialized.
While storing all the task programs to be downloaded in the program area, performing checksum calculation on all data in the program area, and transmitting each task program and the checksum calculation result to the public telephone 1, 1, when a task program is received, a reception area of the RAM 13 having the same size as the corresponding program area of the database 43 is stored in the data [FF].
H, writing the received program data into the initialized receiving area, and simultaneously writing all the data in the receiving area into the flash memory 12 and performing a checksum operation on all the written data.
This is compared with the checksum calculation result from.

As a result, the management device 4 does not need to download all data in the corresponding program area of the database 43, and can download only each task program data, thereby reducing the download time. Further, since a plurality of task programs are managed by one checksum, centralized management of the programs becomes possible. Furthermore, after downloading, the correctness of the version number of the program can be confirmed by checking the checksum. In the first embodiment, the program data from the management device 4 is once written in the RAM 13 of the public telephone 1 and then the program data in the RAM 13 is transferred to the flash memory 12. After initializing the 12 program areas, the management device 4
May be written directly into the flash memory 12.

(B) Second Embodiment (Download of Program from Management Device 4 to Sub-Control Unit 60 of I / F Device 5) The database 43 of the management device 4 stores, in addition to the program of the public telephone, As described above, the program for the I / F device 5 is also stored as a program for the terminal to be downloaded. Here, the I / F device 5 is provided with the main control unit 50 and the sub control unit 60 as described above. Therefore, the main control unit program stored in the flash memory 54 of the main control unit 50 and executed by the CPU 51, and the CP stored in the flash memory 64 of the sub control unit 60
The sub-control unit program executed by U62 is also a download target program, and these main control unit and sub-control unit programs are stored in the database 43.
Is stored in In the second embodiment, the management device 4
Download of the sub-control unit program from the sub-controller to the sub-control unit 60 of the I / F device will be described.

When it is necessary to update the program of the sub-control unit 60 of the I / F device 5, the management device 4 similarly revises the program for the sub-control unit in the database 43 and stores it in the database 43. The control unit 41 reads out the stored program from the database 43, attaches the identification code thereto, and transmits the program to the I / F device 5 via the serial I / F.

CPU 51 of main controller 50 of I / F device 5
Receives the program data through the serial I / F 53 by executing the program in the mask ROM 52 and recognizes the program data as a sub-control unit program based on the identification code of the received program data. The data is written to the dual port RAM 61 of the unit 60. The CPU 62 of the sub control unit 60 has a mask ROM 6
By executing the program No. 3, the program data written in the dual port RAM 61 is sequentially read out and written in the RAM 65. Here, the CPU 62 determines that R
When the program stored in the AM 65 is recognized as the program for itself (that is, for the sub control unit) from the identification code, the program data is sequentially read from the RAM 65 and written to the flash memory 64.

Here, the program of the flash memory 64 of the sub-control unit 60 is also composed of a plurality of task programs like the program of the public telephone, and can be revised for each task program. When the management device 4 updates a certain task program of the sub-control unit program,
Similarly, after each task program of the sub-control unit program to be updated in the database 43 is temporarily saved in the work area, the corresponding program area is initialized with data “FF” H. Thereafter, the revised task program is stored in the corresponding program area, and the task program not to be revised is taken out of the work area and stored in another area of the corresponding program area.

Thereafter, the management device 4 performs a checksum operation on all data including the data “FF” H in the corresponding program area, and compares the checksum data and all the program data in the corresponding program area with I / O.
The program is downloaded to the sub control unit 60 via the main control unit 50 of the F device 5. In this case, the CPU 62 of the sub control unit 60 executes the program of the mask ROM 63 to first set the program reception area of the RAM 65 to the data “FF”.
Initialize with H.

Thereafter, the received task program data is received and sequentially written to the reception area of the RAM 65, and all data in the reception area of the RAM 65 is simultaneously transferred to the program area of the flash memory 64. When all the program data is written to the RAM 65 and the data in the RAM 65 is transferred to the program area of the flash memory 64, the CP of the sub-control unit 60
U62 performs a checksum operation on all the data in the program area, and compares the result of the operation with the result of the checksum operation received from the management device 4. If the checksum calculation results match, the program is considered to have been downloaded successfully,
Thereafter, the processing by the new program of the flash memory 64 is executed.

Here, the capacity of the receiving area of the RAM 65 in the sub-control unit 60 is the same as the capacity of the flash memory 64, and the capacity of these memories is the program area for the sub-control unit in the database 43 of the management device 4. And the same capacity. The RAM 65 of the sub-control unit 60 includes, in addition to the reception area, a write pointer indicating the write address of the program data for the reception area, a reception pointer indicating the address of the reception area to be written to the flash memory 64, and a flash memory. An area for storing a pointer indicating a write address of the memory 64 is provided. The CPU 62 of the sub control unit 60 executes the program of the mask ROM 63 to write the program into the reception area of the RAM 65 according to the value of each pointer of the RAM 65, and at the same time, sequentially starts from the data at the start address of the reception area of the RAM 65. The transfer writing to the flash memory 64 is performed.

As described above, the database 4 of the management device 4
The task program for sub-control unit 3 is revised and sub-control unit 6
In the case of downloading to the flash memory 64 of No. 0, all task programs including the revised task program are downloaded. As a result, the management device can manage a plurality of task programs of different versions as one program, so that the management of the management device can be prevented from becoming complicated, and all the task programs are collectively stored in the sub-control unit 60. Therefore, the sub-control unit 60 can prevent a malfunction caused by a mixture of the downloaded program and the non-downloaded program beforehand.

When each of the task programs for the sub-control unit is downloaded to the sub-control unit 1, the management unit 4 stores the corresponding program area of the database 43 in the data "F".
F "H", all task programs to be downloaded are stored in the initialized program area of the database 43, and checksum calculation is performed on all data in the program area to perform checksum calculation with each task program. While transmitting the result to the sub-control unit 60, the sub-control unit 60, upon receiving the task program, initializes a reception area of the RAM 65 having the same size as the corresponding program area of the database 43 with data [FF] H and initializes. At the same time as writing the reception program data to the received reception area, all the data in the reception area is written to the flash memory 12, a checksum operation is performed on all the written data, and the result is compared with the checksum operation result from the management device. It was made.

As a result, the management device 4 does not need to download all data in the corresponding program area of the database 43, and can download only each task program data, thereby reducing the download time. Further, since a plurality of task programs are managed by one checksum, centralized management of the programs becomes possible. Furthermore, after downloading, the correctness of the version number of the program can be confirmed by checking the checksum. In the second embodiment, the program data from the management device 4 is once written in the RAM 65 of the sub-control unit 60, and then the program data in the RAM 65 is transferred to the flash memory 64. After initializing the program area of the flash memory 64, the management device 4
May be directly written into the flash memory 64.

(C) Third Embodiment (Download of Program from Management Device 4 to Main Control Unit 50 of I / F Device 5) The database 43 of the management device 4 stores the program of the public telephone 1 and the I / F In addition to the program of the sub-control unit 60 of the F device 5, the program of the main control unit 50 of the I / F device 5 is stored as a download target terminal program as described above. Here, when it becomes necessary to update the program of the main control unit 50, the management device 4 similarly updates and stores the main control unit program in the database 43. The control unit 41 of the management device 4 reads out the stored program from the database 43, attaches an identification code thereto, and transmits the program to the I / F device 5 via the serial I / F.

CPU 51 of main controller 50 of I / F device 5
Receives the program data via the serial I / F 53 by executing the program in the mask ROM 52 and recognizes it as a program for itself (that is, for the main control unit) based on the identification code of the received program data. Then, the program data is written into the RAM 55. Then, the main control unit programs written in the RAM 55 are sequentially read and written in the flash memory 54.

Here, the program in the flash memory 54 of the main control unit 50 is also composed of a plurality of task programs, and can be revised for each task program. When revising a certain task program of the main control unit program, the management device 4
After temporarily saving each task program of the main control unit program in the work area, the corresponding program area is initialized with data "FF" H. After that, while storing the revised task program in the corresponding program area,
The task program not to be revised is taken out of the work area and stored in another area of the program area.

Thereafter, the management device 4 performs a checksum operation on all data including the data "FF" H in the corresponding program area, and converts the checksum data and all program data in the corresponding program area into a serial I / F 42. To the I / F device 5 via the. In this case, the CPU 51 of the main control unit 50
By executing the program of M52, first the RAM
The program receiving area 55 is initialized with data "FF" H. After that, each task program data transmitted via the serial I / F 53 is received and the
, And simultaneously transfer all data in the reception area of the RAM 55 to the program area of the flash memory 54.

When all the program data has been written to the RAM 55 and the data in the RAM 55 has been transferred to the program area of the flash memory 54, the main control unit 50
CPU 51 performs a checksum operation on all data in the program area,
Compare the checksum calculation result received from the side. Then, when the two calculation results match, it is regarded that the program has been normally downloaded, and the processing by the new program in the flash memory 54 is executed thereafter.

Here, the R of the main control unit 50 to which the program for the main control unit is downloaded from the management device 5 is written.
AM 55 reception area 55A and flash memory 54
Are the same 128K as shown in FIG.
The main control unit program area in the database 43 of the management device 4 has the same capacity of 128 Kbytes.

Further, in the RAM 55 of the main control unit 50, in addition to the reception area 55A, as shown in FIG. 4, an area 55B in which a write pointer RP indicating a write address of program data to the reception area 55A is stored. And an area 55C in which a reception pointer WP indicating an address of the reception area 55A written in the flash memory 54 is stored.
Pointer F indicating write address of flash memory 54
An area 55D in which P is stored is provided. Then, according to each value of each pointer RP, WP, FP, R
The writing of the main control unit program into the reception area 55A of the AM 55 and the transfer writing of the program of the reception area 55A to the flash memory 54 are performed.

FIG. 5 is an explanatory diagram showing an operation of downloading one task program of the main control unit task programs stored in the database 43 of the management device 4 to the RAM 55 and the flash memory 54 of the main control unit 50. is there. The operation of the main part of the present invention will be briefly described with reference to this explanatory diagram. As described above, the main control unit program is divided into a plurality of task programs and stored in the database 43 of the management device 4. Here, when the task program is revised and stored in the database 43, the program area 43A (second memory) is initialized with data "FF" H before storing the program data, as described above, and then the program data is stored. Write. FIG. 5 shows an example in which the program data is written in the area 43A2, and the area 43A in which the program data is not written.
1, the area 43A3 has data "FF" as shown in FIG.
H is stored.

The control unit 41 of the management device 4 includes the I / F device 5
When downloading the task program, only the program data in the task program area 43A2 is downloaded together with the start address of the area without downloading all data including the free area in the program area 43A. In the example of downloading one task program shown in FIG. 5, the management device 4 stores the address “1 + N”.
The task program in the area 43A2 located between the address “1” and the address “N1 + N2” is added to the start address “1+
The data is downloaded to the I / F device 5 with "N1" appended thereto, and the data ("FF" H) of the free area 43A1 between address 1 and address N1 and the free area 43A3 between address "1 + N1 + N2" and address "N1 + N2 + N3". Data is not downloaded. Such downloading is similarly performed for each task program area. Then, the checksum data obtained as a result of performing the checksum operation on all the data in the program area in which all the main control unit programs are stored in advance is added to the program data in the task program area to be downloaded last. Send.

The main control unit 50 initializes the reception area 55A (third memory) of the RAM 55 with data "FF" H before downloading the program data to the RAM 55. Thereafter, when the task program is transmitted from the management device 4, the start address (that is, "1 + N")
1 ") and the read pointer RP is stored in the area 55B.
The task program is sequentially written from the area of the receiving area 55A indicated by the read pointer RP, and the read pointer RP is incremented by one for each write. As a result, the address “1+
The task program is stored in the area 55A2 from the address “N1” to the address “N1 + N2”, the area 55A1 between the address 1 and the address N1 and the address “1+
An area 55A3 between addresses "N1 + N2" and "N1 + N2 + N3" is a free area without storing program data, and stores data "FF" H at the time of initialization.

The CPU 51 of the main control unit 50
When the data at the start address of the task program is received from the
After setting the write pointer WP of C to the start address of the reception area 55A and setting the pointer FP of the area 55D to the start address of the flash memory 54, the data of the area indicated by the pointer WP in the reception area 55C is read. Writing to the area of the flash memory 54 (first memory) indicated by the pointer FP, and the pointers WP, F
The process of setting P to the next address is sequentially executed. By performing such processing, in the I / F device 5,
The task programs from the management device 4 are sequentially received in the reception area 5
From the area of address “1 + N1” of address 5, the address “N”
At the same time as writing to the area of the address "1 + N2", data in the reception area 55 is sequentially read from the head area and written to the flash memory 54.

When the task program is sequentially written in the receiving area 55A, and the data is sequentially read from the head area of the receiving area 55A and written in the flash memory 54, the area 54A of the flash memory 54 becomes the area of the receiving area 55A. The data “FF” H of 55A1 is written, and the program data of the area 55A2 of the receiving area 55A is written in the area 54B of the flash memory 54. After that, the I / F device 5 continues the reception area 5
The data “F” in the area 55A3 from the address “1 + N1 + N2” of 5A to the address “N1 + N2 + N3”
F "H are sequentially written to the area 55C of the flash memory 54. When all data is written to the flash memory 54, the data in the reception area 55A and the data in the flash memory 54 match.

Thus, all the task programs for the main control unit can be written in the flash memory 54. When the data writing to the flash memory 54 is completed, the CPU 51 of the main control unit 50 performs a checksum operation on all the data in the flash memory 54, and compares the calculation result with the checksum operation transmitted from the management device 4 side. Compare. Then, when both the checksum calculation results match, it is determined that the task data has been normally downloaded to the flash memory 54.

As described above, the database 4 of the management device 4
In the case where the main control unit task program in 3 is revised and downloaded to the flash memory 54 of the main control unit 50,
All the task programs including the revised task program are downloaded. As a result, on the management device side, a plurality of task programs having different versions are stored in one.
Management can be avoided as one program, so that the management on the management device side can be prevented from being complicated, and all task programs are collectively downloaded to the main control unit 50. And malfunctions caused by the mixture of programs that are not downloaded.

When each of the task programs for the main control unit is downloaded to the main control unit 50, the corresponding program area 43A of the database 43 and the reception area 55A of the RAM 55 having the same size as this program area are stored as data "FF" H. Initialize, store all the task programs to be downloaded in the initialized program area 43A of the database 43, perform checksum calculation on all data in the program area 43A, and calculate each task program and the checksum calculation result. While transmitting the task program to the main control unit 50, the main control unit 50
A, at the same time as writing to A, all data in the receiving area 55A is written to the flash memory 54, and a checksum operation is performed on all the written data, and the management device 4
This is compared with the checksum calculation result from.

As a result, the management device 4 does not need to download all data in the corresponding program area 43A of the database 43, and can download only each task program data, thereby reducing the download time. Further, since a plurality of task programs are managed by one checksum, centralized management of the programs becomes possible. Furthermore, after downloading, the correctness of the version number of the program can be confirmed by checking the checksum. In the above-described example, the program data from the management device 4 is once written in the RAM 55, and then the program data in the RAM 55 is transferred to the flash memory 54. After the flash memory 54 is initialized, May be written directly into the flash memory 54.

Next, FIG. 6 shows that each task program for the main control unit in the database 43 of the management device 4 is stored in the I / F device 5.
FIG. 4 is an explanatory diagram showing an operation of a main part when downloading to the flash memory 54 of the main control unit 50 of FIG. The operations of the management device 4 and the main control unit 50 will be described with reference to this explanatory diagram. When revising and downloading each task program for the main control unit in the database 43 of the management device 4, the management device 4 first saves each task program in the corresponding program area to another area as described above, and then, The program area is initialized with data "FF" H. Then, the data sorting of step (1) of storing all the programs including the revised task program in each area of the corresponding program area is executed. Next, in step (2), checksum calculation is performed on all data in the corresponding program area, and in step (3), the start of download is notified to the main control unit 50.

When the main control unit 50 receives the download start notification from the management device 4 by executing the communication process, the main control unit 50 executes the communication process to execute the communication process in step (4).
A is initialized with data “FF” H. Next, in step (5), the reception pointer WP and the write pointer FP are initialized to write data in the flash memory 54. Thus, in step (6), the reception pointer WP is set to the start address of the reception area 55A, and the write pointer FP is set to the start address of the flash memory 54. The main control unit 50 controls each pointer WP,
After the initial setting of the RP, a response to the above-described download start notification is returned to the management device 4 in step (7).

In response to the download start notification response, the management device 4 downloads one record of the task program to be downloaded first in the corresponding program area of the database 43B in step (8) together with the start address of the program. Upon receiving the downloaded program, the main control unit 50 sets the start address of the received program in the write pointer RP, and in step (9), sets the reception area 5
5A, the receiving program is sequentially written from the area indicated by the pointer RP, and the process of incrementing the write pointer RP to the RAM is performed. Further, the main controller 50 issues a write request to the flash memory 54 in step (10).

When the write request is made, the write pointer RP and the receive pointer WP do not match, and the main control unit 50 determines in step (11) that the area of the receive area 55A of the RAM 55 indicated by the receive pointer WP. Is written to the area of the flash memory 54 indicated by the write pointer FP, and the value of each of the pointers WP and FP is incremented by the RAM write pointer R.
The process is continued until the value of P matches the value of the reception pointer WP.

Thus, the downloading of the program from the management device 4 to the main control unit 50 and the writing of the downloaded program to the receiving area 55A are sequentially performed. When one task program is written to the receiving area 55A, The management device 4 downloads one record of the task program to be downloaded next together with the start address of the program. As a result, the next task program is written in the area next to the reception area 55A, and the data in the reception area 55A is subsequently written in the flash memory 54.

As described above, when the last record of the last task program is downloaded from the management device 4 in step (12), the main control unit 50 proceeds to step (1).
In the same manner, the data is written in the reception area 55A in the step 3), and a write request to the flash memory 54 is issued in the step (14). Thus, the last record of the program is written to the flash memory 54. After transmitting the last record of the program to the main control unit 50, the management device 4 notifies the main control unit 50 of the end of the download in step (15). At the time of this download end notification, the checksum calculation result calculated by the management device 4 is added. Upon receiving the end notification, the main control unit 50 stores the RAM write pointer RP in the reception area 5 in step (16).
Set to the last address (bottom) of 5A.

The main control unit 50 continues the flash write process until the value of the RAM write pointer RP matches the value of the receive pointer WP as described above, and finally, the final address of the RAM write pointer RP is When the value of the reception pointer WP matches and all the data in the reception area 55A has been written to the flash memory 54, the end of writing is notified in step (17). In the communication process of the main control unit 50, the main control unit 50 confirms that the write pointer RP is set to the last address by the write end notification, and proceeds to step (1).
In step 8), a checksum operation is performed on all data in the flash memory 54, and the check result with the checksum data received from the management apparatus 4 is transmitted to the management apparatus 4 in step (19). When the management device 4 receives the checksum check result from the main control unit 50 in step (20), if the check result is correct, the management device 4 recognizes that the download has been normally performed, and if the checksum check result is incorrect. If a download error occurs, the download is performed again.

FIGS. 7 and 8 are flowcharts showing the download operation described in FIG. 6 in more detail. First, the operation of the management device 4 will be described according to the flowchart of FIG. When downloading each task program in the database 43 of the management device 4, the management device 4 initializes the corresponding program area with data "FF" H, and then includes a revised task program so that each task program can be downloaded sequentially. A sort process for storing all programs individually in each area of the corresponding program area is executed (step S1). Next, a checksum calculation is performed for all data in the corresponding program area (step S2), and then the start of download is notified to the main control unit 50 (step S3).

When the main control unit 50 returns a download start notification response to the download start notification and “start OK” in step S 4 becomes “Y”, the management apparatus 4 starts from the top address of the corresponding program area in the database 43. The task program for one record is read (step S5), and the read program data is created as transmission data (step S6). Then, the created transmission data for one record is downloaded to the main control unit 50 (step S7). Such downloading of program data is sequentially executed for all task programs.

When all the task programs in the corresponding program area in the database 43 have been downloaded to the main control unit 50, “End” in step S8 becomes “Y”. In this case, the management device 4 transmits download end notification information to which the checksum calculation result is added to the main control unit 50 (step S9). In response to the download completion notification, the main control unit 50 performs a checksum operation on all data including all the task programs written in the flash memory 54, and transmits the operation result and the operation result from the management device 4. A check process for comparing and comparing the checksum calculation result is performed. Then, the check processing result is returned to the management device 4.

When receiving the check processing result from the main control unit 50, the management device 4 determines that “result reception” in step S10 is “Y”, the check result is correct, and “OK” in step S11 is “OK”. If "Y", it is recognized that the download has been completed normally (step S1).
2). If the check result from the management device 4 is not correct, error processing is performed (step S13).

The main control unit 50 responding to the above operation of the management apparatus 4 determines whether there is a notification of the download start from the management apparatus 4 in the communication processing of FIG. 8A (step S21). Here, when the start of download is notified from the management device 4, the reception area 55 of the RAM 55 is received.
A is initialized with data "FF" H (step S2)
2). Thereafter, in the flash writing process of FIG.
The RAM write pointer RP and the reception pointer WP of C are respectively set to the head address of the reception area 55A, and the write pointer FP of the area 55D of the RAM 55 is set to the head address of the flash memory 54 (step S).
41).

Next, the main control unit 50 returns a response to the download start notification from the management device 4 to the management device 4 (step S23). When the task program is downloaded from the management device 4 by returning the download start notification response, the start address of the program received from the management device 4 is set to the write pointer RP (step S26), and The received program data is set in an area of the reception area 55A indicated by the write pointer RP, and the write pointer R
A process of incrementing P and sequentially setting subsequent reception data in a subsequent area of the reception area 55A is executed (step S26).

When the start address of the program received from the management device 4 is set in the write pointer RP,
In the flash writing process of (b), “WP = RP” in step S42 becomes “N”. In this case, the main control unit 5
0 indicates that 250 bytes of data are sequentially read from the area of the reception area 55A indicated by the reception pointer WP and the flash memory 5 indicated by the flash write pointer FP.
In order to sequentially write data in the area No. 4, “F
A request is made to P for writing 256 bytes after the address indicated by WP, and every time one byte is written, the process of setting the next address for WP and RP in step S44 is executed. Thus, when the writing of the 256-byte RAM data to the flash memory 54 is completed, and the determination in step S45 is “Y”, the main control unit 50 compares the reception pointer WP with the RAM write pointer RP in step S46. Then, when the mismatch is confirmed, the processes of steps S43 and S44 are sequentially performed, and the next 256-byte data of the reception area 55A is written to the next area of the flash memory 54.

On the other hand, when the main control unit 50 receives the end notification from the management device 4 after all the task programs have been downloaded from the management device 4, the main control unit 50 proceeds to step S2.
7 is determined as “Y” for “end notification reception”. in this case,
The main control unit 50 sets the write pointer RP to the last address (bottom) of the reception area 55A (step S2).
8). By setting this write pointer RP to the last address of the reception area 55A, in the flash write processing of FIG. 8B, “WP = RP” in step S42 becomes “N”, and as a result, the main control unit By 50, each processing of steps S43 and S44 is executed. This step S
43 and S44, the reception area 55A
Of the free area after the program data area
F "H are sequentially read out to the final address and written to the flash memory 54. Thereby, step S4
Since "WP = RP" of No. 6 becomes "Y", the writing completion is notified (step S47).

By this writing end notification, the "writing end notification" in step S29 of the communication process in FIG. 8A becomes "Y". In this case, when confirming in step S30 that the reception pointer WP is the last address of the reception area 55A, the main control unit 50 performs a checksum operation on all data in the flash memory 54 (step S3).
1) In addition, the calculation result is compared and checked with the checksum calculation result of the management device 4 received from the management device 4 at the time of receiving the end notification, and the check result is sent to the management device 4. Notify (step S32). When the management device 4 determines that the check result is correct based on the notification of the check result, it recognizes that the download has been completed normally, and when the management device 4 determines that the check result from the management device 4 is not correct, Perform error handling.

In the first to third embodiments described above, the program is sent from the management device 4 to the public telephone 1, the sub-control unit 60 of the I / F device 5, and the main control unit 50 of the I / F device 5, respectively. Although the example of downloading has been described, the present invention can be applied to any terminal provided with a flash memory as a terminal to be downloaded.

[0072]

As described above, according to the present invention, a plurality of terminals and a management device are provided, and the terminals have a built-in first memory and execute a program stored in the first memory. The management device has a plurality of second memories in which the programs of the plurality of terminals are respectively stored. For a terminal to be revised in which the program needs to be revised, a revision of the second memory corresponding to the terminal to be revised is performed. In a system for downloading a program and updating a program in a first memory of a terminal to be revised, when a request for a revision of at least one task program among a plurality of task programs constituting the program in the first memory of the terminal occurs. ,
The management device updates the task program in the second memory corresponding to the terminal to be updated, and after the task program is updated, accesses the terminal to be updated from the management device and executes the task program for updating the second memory to the terminal to be updated. Since all the task programs including the different versions are downloaded and all the task programs in the first memory of the terminal to be revised are updated, the management device can manage a plurality of task programs having different versions as one program. In addition, the management of the management device can be prevented from becoming complicated, and a plurality of task programs can be downloaded to the terminal at one time. This prevents malfunctions caused by a mixture of downloaded and undownloaded programs on the terminal. Can be prevented.

Further, when a request for a task program revision of the terminal occurs, the second memory corresponding to the terminal to be revised is initialized, and all the task programs including the revised task program are individually stored in the initialized second memory. While storing, the checksum calculation is performed on all data including the task program in the second memory, and the task program and the checksum calculation result in the second memory are downloaded to the terminal to be revised, while the downloaded data is downloaded. When the task program is received, the first memory having the same capacity as the second memory is initialized, the reception task program is written in the initialized first memory, and the reception task program is written in the first memory. And performs a checksum operation on all data in the first memory. Since the checksum calculation result is compared with the downloaded checksum calculation result and the comparison result is returned to the management device, it is possible to accurately identify whether the program has been normally downloaded to the terminal, and Since only the program data is transmitted at the time of downloading, the download time can be reduced. Further, when the downloaded task program is received, the third memory having the same capacity as the second memory is initialized, and the received task program is written into the initialized third memory, and at the same time, all of the third memory is written. Is sequentially written to the first memory having the same capacity as the third memory, so that accurate downloading to the terminal can be performed and the download time can be similarly reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a system to which a program download method according to the present invention is applied.

FIG. 2 is a block diagram of a public telephone constituting the system.

FIG. 3 is a block diagram of an I / F device constituting the system.

FIG. 4 is a diagram showing a configuration of a RAM and a flash memory of an I / F device to which a program is downloaded.

FIG. 5 is an explanatory diagram showing a state of a memory when a program is downloaded.

FIG. 6 is an explanatory diagram showing a program download operation.

FIG. 7 is a flowchart illustrating an operation of a management device that downloads a program.

FIG. 8 is a flowchart showing an operation of an I / F device to which a program is downloaded.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Public telephone, 2 ... Telephone office, 3 ... IC card, 4 ... Management device, 5 ... I / F device, 11, 51, 62 ... CPU,
12, 54, 64 ... flash memory (first memory), 13, 55, 65 ... RAM (third memory), 4
DESCRIPTION OF SYMBOLS 1 ... Control part, 43 ... Database, 43A ... Program area (2nd memory), 50 ... Main control part, 60 ... Sub-control part.

Claims (3)

[Claims] 1. A terminal comprising: a plurality of terminals; and a management device, wherein the terminal has a built-in first memory and executes a program stored in the first memory; Each of the programs has a plurality of second memories stored therein, and for a terminal to be revised in which the program needs to be revised, a revised program in the second memory corresponding to the terminal to be revised is downloaded. In a system for updating a program in a first memory of a terminal to be updated, when a request to update at least one task program among a plurality of task programs constituting a program in a first memory of the terminal occurs, the management is performed. A revision step of revising a task program in a second memory corresponding to the revision target terminal by a device; Accessing the terminal to be updated from the management device after updating the system, a download step of downloading all task programs including the updated task program in the second memory to the accessed terminal to be updated, An updating step of updating all the task programs in the first memory of the target terminal to the downloaded task programs. 2. The method according to claim 1, wherein the updating step includes: when a request for updating the task program of the terminal occurs.
Initializing a second memory corresponding to the terminal to be updated; storing all task programs including the updated task program in the initialized second memory; Performing a checksum operation on all data including the task program of (a), and the downloading step downloads the task program in the second memory and the checksum operation result to the terminal to be updated. And an updating step, upon receiving the downloaded task program, initializing the first memory having the same capacity as the second memory; and Writing a receiving task program to the memory; Performing the checksum operation on all the data in the first memory, and comparing the checksum operation result with the downloaded checksum operation result and returning the comparison result to the management device. And a program download method. 3. The method according to claim 1, wherein the step of updating includes: when a request for updating the task program of the terminal occurs.
Initializing a second memory corresponding to the terminal to be updated; storing all task programs including the updated task program in the initialized second memory; Performing a checksum operation on all data including the task program of (a), and the downloading step downloads the task program in the second memory and the checksum operation result to the terminal to be updated. Receiving the downloaded task program, initializing a third memory having the same capacity as the second memory; and updating the initialized third memory. And write the receiving task program to all the data in the third memory. Sequentially writing to the first memory having the same capacity as the third memory; and performing checksum operation on all data in the first memory when all data is written to the first memory. And a step of comparing the checksum calculation result with the downloaded checksum calculation result, and returning the comparison result to a management device.