JPH02211727A - Mobile radio equipment - Google Patents

Abstract

PURPOSE:To prevent wrongful rewrite of contents of a nonvolatile memory by enabling a control part to execute the test mode processing only at the time when the discrimination code stored in the discrimination code storage means of an operation part actually attached to a mobile radio equipment main body is related to the test mode processing. CONSTITUTION:A microcomputer (MCPU) 4 connected to a one-chip microcomputer (SCPU) 7 or 9 of an operation part 2 or an operation part 3 (for test) actually attached to a mobile radio equipment main body 1 requests the operation part 2 or 3 to send the discrimination code, and at the time of receiving the discrimination code as the response, the MCPU 4 discriminates whether this discrimination code is a discrimination code ID 2 related to the operation part 3 for test or not. Only when it is the discrimination code related to the test mode processing, the MCPU 4 in the mobile radio equipment main body 1 is enabled to execute the test mode processing. Thus, a danger that contents of the non-volatile memory is wrongfully rewritten is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mobile radio device used in car phones, mobile phones, and the like.

[Prior Art] This type of mobile radio generally includes a main body of the mobile radio including a control section, a radio section, etc., and an operation section on which operation keys such as dial keys are mounted.

In addition, the telephone number of the own station, regional information, etc. are stored in an electrically rewritable non-volatile memory and can be accessed from the control unit.

By the way, at the time of shipping a mobile radio device, a shipping test is performed that includes processing to set data such as telephone numbers and regional information according to each mobile radio device in the above-mentioned non-volatile memory.
Even after actual use, various tests are conducted for maintenance, repair, etc. purposes. Such tests could have been carried out using a special device called a testing channel designation machine, which consisted of a personal computer and an ink face box, but the channel designation machine was a very expensive device. , the fourth method does not require the use of such special equipment.
A mobile radio device having a configuration as shown in the figure has been proposed.

In FIG. 4, 40 is a main body of a mobile radio, 41 is an operating section such as a handset, and 42 is an antenna.These constitute the mobile radio. The mobile radio main body 40 includes a control section 400. It includes a wireless section 401, an EEPROM 402 which is an electrically rewritable non-volatile memory, and is also provided with a test terminal 403. Operation unit 4J
has an operation key 410 such as a dial key, and the code 4
4 and a connector 45 to the mobile radio main body 40. As shown in the flowchart of FIG.
If it is not at the HD) level, normal mode processing (S51) is executed, and if it is at GND level, test mode processing (S52) is executed.
). Here, the normal mode processing refers to the processing related to the original operation of the mobile radio such as calling operation and receiving operation, and the test mode processing refers to the processing related to the original operation of the mobile radio such as calling operation and incoming call operation. refers to such processing. In such a configuration, when the power is turned on,
If the level of the test terminal 403 is not at the GND level, the control unit 400 executes normal mode processing (S51), and interprets the data from the operation key 410 mounted on the operation unit 41 in the original meaning of the mobile radio device operation. Process. On the other hand, GN
If the level is D, test mode processing (S52) is executed, and the data from the operation key 410 is interpreted and processed as having a meaning exclusively for testing.
When the rewriting operation in step 2 is performed, processing for rewriting the contents of the EEPROM 402 is executed accordingly. That is, the operating section 41 functions as an operating section for the user to operate the mobile radio during normal mode processing, and functions as an operating section for testing the mobile radio by a maintenance person during test mode processing.

[I1 Problem to be Solved by the Invention] According to the conventional configuration shown in FIG. Tests including rewriting are possible. However, this has the following drawbacks. In other words, if the test terminal is set to the GND level, the mobile radio will function in test mode, so if you know how to rewrite the contents of the non-volatile memory using the operation unit, it will be extremely easy to illegally rewrite the contents of the non-volatile memory. It's something that happens.

The present invention has been made in view of these circumstances,
The purpose is to provide a mobile wireless device that can rewrite the contents of a non-volatile memory without using expensive equipment, and that reduces the risk of the contents being illegally rewritten.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a mobile radio device having a mobile radio device main body including a control section that selectively executes normal mode processing and test mode processing, and an operation section in which operation keys are mounted. wherein the operating section is provided with an identification code storage means for storing an identification code, and the identification code stored in the identification code storage means of the operating section actually attached to the mobile radio main body is the identification code for the test mode processing. Only when this is the case, the control unit is brought into a state in which it can execute the test mode process.

[Effect]

In the mobile radio device of the present invention, the identification code storage means in the operation unit in which the operation keys are mounted stores the identification code,
Only when the identification code storage means in the operation section currently installed in the mobile radio device main body is an identification code related to test mode processing, the control section in the mobile radio device main body is in a state where it can execute the test mode processing. .

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2 are block diagrams of main parts of an embodiment of the present invention, and FIG. 1 shows a normal operating section 2 connected to a mobile radio main body
FIG. 2 shows a state in which the operating section 3 for testing is attached to the mobile radio main body 1 and in use.

In the same figure, a normal operating section 2 can be attached to or removed from the mobile radio main body 1 using a cord or connector (not shown), and when attached to the mobile radio main body 1 as shown in FIG. By operating the operating unit 2, a telephone call can be made from the mobile radio. This operating section 2 is equipped with a keyboard 6 having tire keys and special keys for function function as required, and a keyboard 6 which stores an identification code IDI indicating a normal operating section.
Chip microcomputer (hereinafter referred to as 5CPU) 7
Built-in. This 5CPU 7 starts operating when the operation unit 2 is attached to the mobile radio main body 1 and power is supplied through it, and transmits information related to keys pressed on the keyboard 6 to the mobile radio main body 1, etc. In addition to carrying out the normal processing of
Perform the process of returning the .

On the other hand, the test operating section 3 can be attached to the mobile radio main body 1 using a cord or connector (not shown) instead of the normal operating section 2, and can be removed. When attached to the mobile radio main body 1 as shown in Figure 2,
By operating this operation unit 3, it is possible to make a call from the mobile radio, and also to test the mobile radio. The configuration of this operating section 3 is the same as that of the normal operating section 2, except that the identification code stored in the 5CPU 9 is an identification code ID2 indicating a test operating section.

In addition, the mobile radio main body 1 is an electrically rewritable non-volatile device that stores telephone numbers, local information, etc.
-IJ For example, EEPROM5 and 1. :: EEPROM
5 and an operating section 2 or 3 which is connected to a radio section (not shown) and which is actually attached to the mobile radio main body l.
The microcomputer (hereinafter referred to as MCPU) 4 is connected to the 5 CPU7 or 5CPU9.

FIG. 3 shows the flow of an example of processing performed by the MCPU 4.

As shown in the figure, when the MCPU4 is powered on,
After performing the initialization process Sl, the operation unit 2 connected to itself
Alternatively, send a request to send an identification code to the operating section 3 (S2), and when receiving the identification code as a response, determine whether or not it is the identification code JD2 for the operating section 3 for testing (S3). ), and the identification code ID for the normal operation section 2 instead of the identification code ID2.
In the case of I, it is determined that the normal operation section 2 is currently connected, and normal mode processing (S4) is executed.

On the other hand, when the identification code is D2, the test operation section 3
is currently connected and proceeds to normal mode processing S5, and during that processing it is determined whether or not an operation related to transition to the test mode has been performed from the operation unit 3 (S6),
If such an operation is performed, test mode processing (S
Execute 7).

Note that if an operation related to transition to normal mode is performed from the operation unit 3 during test mode processing, normal mode processing S
The process moves to step 5 (S8).

Next, the operation of the mobile radio device of this embodiment configured as described above will be explained.

When the mobile radio main body 1 is powered on with the normal operation unit 2 attached to the mobile radio main body 1 as shown in FIG. 1, the MCPU 4 starts the process shown in FIG. First, as part of the initialization process Sl, the MCPU4
The phone number 5 of the own station and the area information of the own station are read out from the OM5 and stored internally. Next, the operation unit 2 that is currently connected
An identification code sending request is issued to (S2). When the 5CPU 7 of the operation unit 2 receives this request, it sends the identification code +01 set for itself to the MCPU 4. The MCPU 4 receives this identification code I in process S3 of FIG.
If it is determined that DI is not an identification code for a test operation section, normal mode processing S4 is executed. In this normal mode processing S4, various processes necessary for the mobile radio to achieve the original functions of the mobile radio, for example, processing related to a calling operation, a call receiving operation, a ROAMING operation, etc., are performed. That is, when a telephone number of the other party is inputted from the keyboard 6 of the operation unit 2 as part of a call operation by the user, it is encoded by the 5CPU 7 and sent to the MCP.
The information is transmitted to U4, and MCPU4 judges the transmitted content, creates predetermined transmission data, and performs a predetermined calling operation such as transmitting it to the outside via a wireless section (not shown). Also, when received data is sent from the radio section, the telephone number in the received data is compared with the telephone number of the own station, and if they match, an incoming call response signal is added to the transmitted data and the radio In addition, the received data is processed and the regional information in the received data is compared with the regional information of the own station, and if there is a discrepancy, the predetermined The ROAMING operation is performed.

Next, when testing such a mobile radio, the normal operating section 2 attached to the mobile radio main body 1 is removed, and in its place, a test operating section 3 is installed as shown in FIG.
Attach it to the mobile radio main body 1. Thereafter, when the power is turned on, the process shown in FIG. 3 by the MCPU 4 is started. After performing the initialization process S1 in the same manner as described above, the MCPU 4 issues an identification code sending request to the currently connected operating unit 3 (S2), and the 5 CPUs 9 of the operating unit 3 respond to this request to send an identification code to the operating unit 3 that is set to itself. Since the identification code ID2 is returned, the MCPU 4 recognizes from the identification code ID2 that the currently connected operating section is the test operating section 3. As a result, the MCPU 4 proceeds from process S3 to process S5, and once executes normal mode process S5. Note that this normal mode processing S5 is the normal mode processing S4.
is the same as After that, when the operation to shift to the test mode is performed on the keyboard 8 of the operation unit 3, the 5CPU
9 to the MCPU 4 and is determined there (S
6) The MCPU 4 moves from normal mode processing S5 to test mode processing S7.

This allows a maintenance person or the like to operate the operation unit 3 to test the mobile radio device. Note that the test operation section 3 has almost the same structure as the normal operation section 2, so when a key in the same position as the keyboard 6 is pressed on the keyboard 8, the same code is transmitted from the 5CPU 9 to the MCP.
This will be transmitted to U4, but since MCPU4 is executing test mode processing, it will not necessarily interpret it in the same way as in normal times, but will change it to a test-only function.

As a result, the operation section 3 functions as an operation section equipped with test functions. In particular, as mentioned above, EE
The contents of the FROM 5 include the telephone number of the own station, regional information of the own station, etc., which can be changed by operating the operating section 3 in the test processing mode. For example, to set the phone number of your own station, if you perform predetermined key operations including the key manual key of the phone number of your own station that you want to set, on the keyboard 8 of the operation unit 3, those key manual information will be encoded by the 5 CPU 9. The phone number is transmitted to the MCPU 4, and the MCPU 4, which is running the test processing mode, sends the phone number to the EEP.
This is written in the area in the ROMS where the telephone number of the own station is stored.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various other additions and changes are possible. For example, the present invention is also applicable to a mobile radio device such as a mobile phone in which the main body of the mobile radio device and the operating section are integrated. In this case, the control section of the mobile radio device is provided with an interface for a test operation section in addition to the interface with the normal operation section, and even if only one operation section has an identification code related to test mode processing. Once connected, the control unit may be in a state where it can execute the test processing mode.

[Effects of the Invention] As explained above, in the mobile radio device of the present invention, the identification code stored in the identification code storage means of the operation unit actually attached to the main body of the mobile radio device is the identification code for test mode processing. Only in certain cases, the control unit within the mobile radio device will be in a state where it can execute test mode processing, so normally the mobile radio device has built-in identification code storage means that stores an identification code that causes the control unit to execute only normal mode processing. By attaching the operation section and connecting it instead or in addition to it during testing, an operation section with a built-in identification code storage means that stores the identification code for test mode processing can be used as a rewritable non-volatile memory. Tests including rewriting of stored phone numbers, etc. can be performed. In addition, the operating section used for testing can have the same configuration as the operating section normally used, except that the identification code storage means stores a different identification code. It can be manufactured at extremely low cost. Furthermore, compared to the method of lowering the test terminal of the mobile radio device itself to the CND level, it is much more difficult to manufacture an operating unit that stores the identification code for testing, so the contents of non-volatile memory may be illegally rewritten. It is possible to reduce the risk of getting caught.

[Brief explanation of the drawing]

1 and 2 are block diagrams of essential parts of an embodiment of the present invention, FIG. 3 is a flowchart of an example of processing by the MCPU4, FIG. 4 is a block diagram of a conventional example, and FIG. 5 is a block diagram of a conventional example. 4 is a flowchart of an example of processing by the control unit 400. In the figure, l...Mobile radio main body 2...Normal operation section 3...Test operation section 4...MCPU (microcomputer) 5...E
EPROM 68...Keyboard 7.9...5 CPU (1 chip microcomputer) ID2...Identification code DI

Claims (1)

[Scope of Claim] A mobile radio having a main body of the mobile radio including a control unit that selectively executes normal mode processing and test mode processing, and an operation unit having operation keys, which stores an identification code. provided with an identification code storage means in the operation section, and only when the identification code stored in the identification code storage means of the operation section actually attached to the main body of the mobile radio is an identification code related to the test mode processing, A mobile radio device, wherein the control unit is in a state where it can execute the test mode process.