JP6176829B2 - Communication device and wireless communication module - Google Patents

Description

  The present invention relates to a communication device such as a mobile phone terminal capable of handling SMS (Short Message Service), and more particularly to a communication device capable of dealing with limited input data.

[Conventional technology]
Recent communication devices such as mobile phone terminals include general mobile phones or smartphones equipped with a display and a keyboard.
[Conventional mobile phone device: FIG. 6]
A conventional mobile phone device will be described with reference to FIG. FIG. 6 is a configuration block diagram of a conventional mobile phone device.
As shown in FIG. 6, a conventional mobile phone device 1 includes a communication processing LSI (Large Scale IC) 101, a wireless communication processing unit 102, a memory 103, an antenna 104, an application LSI 105, a keyboard 106, and a microphone. 107, a speaker 108, and a display 109.

  In the conventional cellular phone device 1, a communication processing LSI data input / output path (serial interface) 201 for connecting the communication processing LSI 101 and the application LSI 105, and an audio signal input path (audio) for connecting the microphone 107 to the communication processing LSI 101. Interface) 202, an audio signal output path (audio interface) 203 for connecting the communication processing LSI 101 to the speaker 108, and a radio signal input / output path 204 for connecting the radio communication processing unit 102 and the antenna 104.

  Specifically, in the conventional cellular phone device 1, in addition to the communication processing LSI 101 that realizes communication processing, images and characters are displayed on the display 109, or input from the keyboard 106 is interpreted and processing is performed. By installing the application LSI 105, not only voice communication via the microphone 107 and the speaker 108 but also Web display and data (packet) communication for executing the same are performed, SMS transmission / reception, mail transmission / reception, application ( It can support various functions such as realization of calculators and notepads. In other words, high functionality has been realized, such as functions that have been realized using a PC (Personal Computer) so far can be implemented by a single mobile phone device.

[Wireless communication module: Fig. 7]
Next, a conventional wireless communication module will be described with reference to FIG. FIG. 7 is a configuration block diagram of a conventional wireless communication module.
As shown in FIG. 7, the conventional wireless communication module 2 does not include a display or a keyboard, includes a communication processing LSI 101, a wireless communication processing unit 102, and a memory 103, and performs AT commands or data transmission / reception as a user interface. A minimum communication interface such as a serial interface 201 and voice interfaces 202 and 203 are prepared to perform basic communication processing.

  The communication module 2 is incorporated into a product that the user wants to develop, and cannot be realized only by a general mobile phone or smartphone, for example, via a wireless communication module in response to a change in input data from an external device. An industrial communication device using a mobile phone network, such as reporting (transmitting) collected data, can be realized.

As a method for transmitting information by the wireless communication module, voice, data communication, SMS communication, and the like can be considered. As a method for transmitting collected data, communication methods other than voice communication can be used from the viewpoint of transmission and storage of information. Appropriate, data communication and SMS transmission are conceivable.
In the case of data communication, the wireless communication module only exchanges data wirelessly with the mobile phone network, and the protocol and system for correctly transmitting and receiving data are supported on the user side, that is, the communication device side, and the system is constructed. There is a need to.
On the other hand, in the case of SMS transmission, by sending data to be transmitted in the AT command format to the wireless communication module inside the device, even a general mobile phone as a communication destination via the mobile phone network can be transmitted from the communication device. Therefore, there is an advantage that the system can be easily constructed.

  Since the wireless communication module 2 is made on the premise that it is incorporated in a device on the user side, it needs to be made smaller than a general mobile phone. In order to make it compact, it is made only with the minimum necessary components for communication, for example, the communication processing LSI 101, the wireless communication processing unit 102, the memory 103, and the interface units 301 to 304 for inputting / outputting data, voice, and wireless signals by the user, It is common to achieve miniaturization.

  As the communication processing LSI 101, a communication processing LSI developed for a general mobile phone or smartphone is generally commonly used for a wireless communication module.

  As a data input / output unit with the communication processing LSI 101, a USB (Universal Serial Bus) or UART (Universal Asynchronous Receiver Transmitter) serial interface is used as the physical interface (201) in consideration of convenience of PC connection. In many cases, AT commands (command transmission / reception mode) and data (data transmission / reception mode) are used as input / output formats.

  The data handled by the AT command only needs to be able to exchange symbols and alphanumeric characters defined in ASCII code. Data that is a control character in ASCII code (eg, NULL, 0x00 in hexadecimal as a data value) is processed. Therefore, in order to eliminate convenience and unnecessary processing, the communication processing LSI 101 may be software processing that ignores some input data assigned as control characters in ASCII code.

  When such a communication processing LSI 101 is used as a component of a general mobile phone or smartphone, control characters are handled by a keyboard 106 or a display 109 provided as a user interface corresponding to processing in the application LSI 105. Since there is no need, an operation in which some input data is ignored by the communication processing LSI 101 is not a problem.

However, when the communication processing LSI 101 is used for the wireless communication module, the data input / output means 201 with the communication processing LSI 101 becomes a user interface as it is, and there is a problem that there are characters (data values) that cannot be input / output.
If the data value “0x00” defined as “NULL” in the ASCII code becomes the input data of the communication processing LSI 101 and the software processing ignores the data, the character code GSM (registered trademark) ( Data value “0x00” is assigned as “@” in the Global System for Mobile Communication (7-bit default alphabet) (hereinafter referred to as character code GSM7), and the wireless communication module temporarily supports SMS transmission with character code GSM7. In this case, there is a restriction that some definition characters cannot be transmitted due to the restriction of input data. When the character code GSM7 is used, the correspondence is incomplete, which is convenient for the user. The problem of going down occurs.

[Related technologies]
As related prior art, Japanese Patent Laid-Open No. 2007-025120 “Wireless Terminal Device” (Hitachi, Ltd.) [Patent Document 1], Japanese Patent Laid-Open No. 2003-066732 “Mail data including special characters can be displayed. There is a “mobile phone terminal and a mobile phone terminal having a special character processing function” (Hitachi Application Co., Ltd.) [Patent Document 2].

  In Patent Document 1, in a wireless terminal device, character font data of a frequently used character type is stored in a storage unit in advance, a character code is acquired from a received message, and a character font corresponding to the acquired character code is provided. If it is in the storage unit, it is converted, and if not, the corresponding character font is downloaded from the base station.

  In Patent Document 2, a mobile phone terminal includes a plurality of special character code tables. When one or a plurality of special character code tables are selected, mail data is encoded / selected based on the selected special character code table. Decoding is shown.

JP 2007-025120 A JP 2003-066732 A

  As described above, in a conventional mobile phone device that supports SMS, there is a restriction that the communication processing LSI adopted to realize the SMS support cannot accept some input data, and the input is restricted. When data is assigned as a transmission character code to be transmitted as SMS, the wireless communication module has a problem that a character code that cannot be transmitted by SMS is generated, and the convenience of the user is lowered.

  The present invention has been made in view of the above-mentioned circumstances. The restricted character code, which is an input restriction, is converted into another code and input, and after input, the SMS processing is performed after reverse conversion to the original restricted character code. By implementing, it aims at providing the communication apparatus which can also transmit the data which could not be transmitted as SMS transmission as an SMS message.

  The present invention for solving the problems of the above-described conventional example includes a restriction table for storing restricted character codes whose use is restricted in the communication device, and refers to the restriction table for input data to obtain the restricted character code. If applicable, the restriction character code is converted to another character code and output. If the restriction character code is not applicable, the input data is output, and the data output from the communication module control part is input. And a wireless communication module that detects another character code, reversely converts the other character code into a restricted character code before conversion, and performs communication processing.

  The present invention provides a communication module control unit that outputs data including a restricted character code whose use is restricted in a communication device, and a restriction table that stores the restricted character code, and the data output from the communication module control unit A data conversion unit that refers to the restriction table, converts the restriction character code to another character code when it falls under the restriction character code, and outputs data when it does not fall within the restriction character code, and data A wireless communication module that inputs data output from the conversion unit, detects another character code, reversely converts another character code to a restricted character code before conversion, and performs communication processing; And

  The present invention is characterized in that, in the above communication device, processing for converting a restricted character code into another character code and processing for reversely converting another character code into a restricted character code are performed by arithmetic processing.

  The present invention performs the process of converting a restricted character code into another character code and the process of inversely converting another character code into a restricted character code using the conversion table and the inverse conversion table in the communication device. It is characterized by.

The present invention is a wireless communication module that ignores a restricted character code when a restricted character code whose use is restricted is input, and performs communication processing of the character code when a character code that is not a restricted character code is input. When another character code converted from the restricted character code is input, the wireless communication module detects the other character code, reversely converts the other character code to the restricted character code, and performs communication processing. and wherein the TURMERIC line.

  According to the present invention, the communication module control unit includes a restriction table that stores restricted character codes that are restricted in use, and refers to the restriction table for input data. The code is converted to another character code and output. If the character code does not correspond to the restricted character code, the input data is output. The wireless communication module inputs the data output from the communication module control unit. By detecting and reversely converting another character code into a restricted character code before conversion, the communication apparatus performs communication processing. Therefore, there is an effect that data that could not be transmitted conventionally can be transmitted as a message.

  According to the present invention, the communication module control unit outputs data including a restricted character code whose use is restricted, and the data conversion unit includes a restriction table that stores the restricted character code, and is output from the communication module control unit. Refer to the restriction table for the received data, and if the restriction character code corresponds to the restriction character code, the restriction character code is converted into another character code and output. The communication module inputs the data output from the data conversion unit, detects another character code, reversely converts another character code to a restricted character code before conversion, and performs a communication process. Therefore, there is an effect that data that cannot be transmitted conventionally can be transmitted as a message.

1 is a configuration block diagram of a first communication device according to an embodiment of the present invention. It is the schematic of a restriction table. It is the schematic which shows a 1st control flow. It is a structure block diagram of the 2nd communication apparatus which concerns on embodiment of this invention. It is the schematic which shows a 2nd control flow. It is a block diagram of a conventional mobile phone device. It is a block diagram of a conventional wireless communication module.

Embodiments of the present invention will be described with reference to the drawings.
[Outline of the embodiment]
In the first communication apparatus according to the embodiment of the present invention, the communication module control unit stores a restricted character code that is restricted in use when there is a restriction due to input data in the input unit of the wireless communication module. A table is provided, referring to the restriction table for input data, when the restriction character code is applicable, the restriction character code is converted to another character code and output, and when the restriction character code is not applicable, the input data is outputted. Then, the wireless communication module inputs the data output from the communication module control unit, detects another character code, reversely converts the other character code to the restricted character code before conversion, and performs SMS communication processing. Therefore, data that could not be transmitted as SMS transmission can also be transmitted as an SMS message.

  In the second communication device according to the embodiment of the present invention, the communication module control unit includes a restricted character code whose use is restricted when there is a restriction due to input data in the input unit of the wireless communication module. The data conversion unit is provided with a restriction table for storing the restricted character code, and the data is output from the communication module control unit with reference to the restricted table. Is converted to another character code and output, and when the character code does not correspond to the restricted character code, the input data is output, and the wireless communication module inputs the data output from the data converter and detects another character code. Since another character code is converted back to the restricted character code before conversion and SMS communication processing is performed, it cannot be transmitted as SMS transmission. Tsu data also are those that can be sent as SMS messages.

[First communication apparatus: FIG. 1]
A first communication apparatus according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a configuration block diagram of a first communication device according to an embodiment of the present invention.
A first communication device (first communication device) 3 according to an embodiment of the present invention includes a wireless communication module 2, a communication module control unit 501, a memory 502, a keyboard 503, as shown in FIG. The display 504, the antenna 505, the microphone 107, and the speaker 108 are basically provided.

The wireless communication module 2 has the configuration shown in FIG.
The wireless communication module 2 includes a communication processing LSI data input / output path connector 301, an audio signal input path connector 302, an audio signal output path connector 303, and a wireless signal input / output path connector 304 for external connection. And.

A communication module control unit 501 is connected to the communication processing LSI data input / output path connector 301 via a communication processing LSI data input / output path 401.
The microphone 107 is connected to the audio signal input path connector 302 via the audio signal input path 402.
The speaker 108 is connected to the audio signal output path connector 303 via the audio signal output path 403.
An antenna 505 is connected to the wireless signal input / output path connector 304 via a wireless signal input / output path 404.

The communication module control unit 501 is connected to the memory 502, the keyboard 503, and the display 504, and exchanges data with these units.
The communication module control unit 501 inputs and outputs data with the wireless communication module 2.

For example, the communication module control unit 501 inputs data from the keyboard 503 or the memory 502 and outputs a character code to the wireless communication module 2.
Normally, when a restricted character code whose use is restricted is included in the data, when output from the communication module control unit 501, the wireless communication module 2 ignores the restricted character code for processing. .

Therefore, in the first communication device, the communication module control unit 501 includes a table of restricted character codes (restricted table), and determines whether or not the input character code corresponds to the restricted character code by using the restricted table. If the character code corresponds to the restricted character code, it is converted into another character code that is not the restricted character code and output to the wireless communication module 2.
Note that the restriction table may be stored in the memory 502.

In the wireless communication module 2, the character code input from the communication module control unit 501 performs communication processing as it is for a character code that is not a restricted character code, but internally restricts another converted character code. Communication processing is performed by converting back to character code.
As will be described later, the communication processing LSI 101 in the wireless communication module 2 has an input processing unit, an AT command processing unit, and an SMS transmission processing unit.
Specific processing in the communication module control unit 501 and the wireless communication module 2 will be described later.

[Restriction table: Fig. 2]
The restriction table provided in the communication module control unit 501 will be described with reference to FIG. FIG. 2 is a schematic diagram of a restriction table.
In FIG. 2, the allocation of the character code GSM7 is described in 6.2.1 GSM7 bit Default Alphabet etc. of 3GPP TS 23.038 (Alphabets and language-specific information). To understand what characters (hexadecimal: 0x00 to 0x1F) are assigned in the character code GSM7, what characters are assigned as character codes ASCII and GSM7 to the input data It is to show.
The input data portion in FIG. 2 is used as the restriction table.

In the character code ASCII, the input data value part assigned as the control code is the character code GSM7. Characters that are considered to be frequently used such as “@” (input data: 0x00), “Ω” (input data: 0x15) Assigned.
If a control code portion (character range ASCII is 0x00 to 0x1F) is input to the communication processing LSI 101 in the wireless communication module 2, data is ignored or a control code operation is performed (for example, 0x08). If the character code GSM7 is used, the input value is assigned as a control code part in the character code ASCII. The character of the character code GSM7 corresponding to the value cannot be processed by the communication processing LSI 101. In other words, because the input data is limited, the operation corresponding to the character code GSM7 as SMS transmission is partially incompatible.

Therefore, the communication module control unit 501 refers to the restriction table in FIG. 2 for the input data and determines whether the input data corresponds to the restriction character code of the restriction table. Performs conversion to character code.
Specifically, the character code GSM7 is defined with 7 bits (0x00 to 0x7F as hexadecimal) for character code assignment, but 8 bits (0x00 to 0xFF as hexadecimal) in the serial data path with the communication processing LSI 101. ) Is generally exchanged.

  In consideration of these characteristics, input values (0x00 to 0x1F) assigned as control codes in the character code ASCII as a restriction are assigned to the data range (0x80 to 0xFF) that is not defined in the character code GSM7. In this way, the communication module control unit 501 converts the data and inputs it to the communication processing LSI 101 in the wireless communication module 2, and then converts the input value corresponding to the character code GSM7 in the communication processing LSI 101 to perform the processing. The processing unit 102 converts it into a radio signal. As a result, a part of the input value is not a value defined in the standard of the character code GSM7, but the wireless communication module 2 can perform SMS transmission using the character code GSM7.

[Conversion processing]
When the restriction character code is detected using the restriction table, the communication module control unit 501 may convert the character code into another character code using the conversion table.
It is also possible to perform conversion processing by arithmetic processing without using a conversion table. For example, the input data [0x00] can be converted into a code of [0x80] by adding a specific numerical value [0x80] and an arithmetic operation and performing a logical OR operation.

[Inverse transformation processing]
In addition, it is conceivable to perform reverse conversion from another character code to a restricted character code in the wireless communication module 2 using the reverse conversion table.
Moreover, it is also possible to perform the reverse conversion process by an arithmetic process without using the reverse conversion table. For example, by subtracting a specific numerical value [0x80] in arithmetic operation from another character code [0x80] and logical product with a specific numerical value [0x7F] in logical operation, it reverses the restricted character code of [0x00] Can be converted.

[First control flow: FIG. 3]
Next, a control flow (first control flow) in the first communication apparatus will be described with reference to FIG. FIG. 3 is a schematic diagram showing a first control flow.
The command specification for sending SMS by AT command is defined in 3.5 Message Sending and Writing Commands of 3GPP TS 27.005 (Use of DTE-DCE interface for SMS and CBS). As an example of this embodiment, 3.5. 1. Using Send Message + CMGS, the processing flow when sending the message “a@b.com \ 10 22Ω” as SMS to the phone number “09012345678” in GSM7 is shown in FIG. Yes.

  Note that there are various methods for allocating the input data as the restriction to the unused input data range. In FIG. 3, the restriction character is a value obtained by ORing the hexadecimal [0x80]. It is described as the case where it is assigned to.

As shown in FIG. 3, the communication module control unit 501 has an AT command input phase, and data input from the outside by the input processing unit in the wireless communication module 2 is output to the AT command processing unit.
The AT command processing unit recognizes the AT command and shifts to the message input mode.

  When the communication module control unit 501 has a message input phase and the input processing unit outputs input data to the AT command processing unit, the AT command processing unit has [0x80] converted to another character code, [0x00] is performed (inverse conversion process). Similarly, [0x83] is replaced with [0x03], and [0x95] is replaced with [0x15].

As a result, the AT command processing unit issues a transmission request to the SMS transmission processing unit for the SMS message “a@b.com ¥ 10 22Ω” for the telephone number “09012345678”.
Although the input data is different from the defined value, the characters assigned to the input restriction can be transmitted as SMS.
In the above example, the AT command processing unit sequentially performs necessary replacement processing on the input data. However, the data from the input processing unit is temporarily stored in a memory or the like, and the stored data is searched to apply. Another character code may be collectively replaced.

[Second communication apparatus: FIG. 4]
Next, a second communication device according to an embodiment of the present invention will be described with reference to FIG. FIG. 4 is a block diagram showing the configuration of the second communication apparatus according to the embodiment of the present invention.
As shown in FIG. 4, the second communication device (second communication device) 3 ′ according to the embodiment of the present invention has a restriction character code that is used in the communication module control unit 501 of the first communication device. The input data conversion unit 506 performs conversion processing for detection and another character code.
Therefore, the communication module control unit 501 ′ of the second communication device 3 does not include a restriction table, and does not perform extraction of restricted character codes and conversion processing to another character code.

That is, the input data conversion unit 506 has the restriction table shown in FIG. 2, detects the restriction character code with reference to the restriction table for the data input from the communication module control unit 501 ′, and detects the restriction character. The code is converted into another character code.
The wireless communication module 2 in the second communication device is the same as that of the first communication device.

[Second control flow: FIG. 5]
Next, a control flow (second control flow) in the second communication apparatus will be described with reference to FIG. FIG. 5 is a schematic diagram showing a second control flow.
As shown in FIG. 5, the communication module control unit 501 ′ has an AT command input phase, and the input data conversion unit 506 outputs the input data as it is to the wireless communication module 2. The input processing unit of the wireless communication module 2 outputs the input data to the AT command processing unit.
The AT command processing unit recognizes the AT command and shifts to the message input mode. After this, the message is buffered in a memory or the like.

  The communication module control unit 501 ′ has a message input phase, and the input data conversion unit 506 converts the input data into another character code with reference to the restriction table for the restricted character code and outputs it to the wireless communication module 2. For example, [0x00] is replaced (converted) with [0x80], [0x03] is replaced with [0x83], and [0x15] is replaced with [0x95].

  When the input data is output to the AT command processing unit by the input processing unit of the wireless communication module 2, the AT command processing unit replaces it with [0x00] when there is [0x80] converted to another character code (reverse) Conversion process). Similarly, [0x83] is replaced with [0x03], and [0x95] is replaced with [0x15].

As a result, the AT command processing unit issues a transmission request to the SMS transmission processing unit for the SMS message “a@b.com ¥ 10 22Ω” for the telephone number “09012345678”.
Although the input data is different from the defined value, the characters assigned to the input restriction can be transmitted as SMS.
In the above example, the AT command processing unit sequentially performs necessary replacement processing on the input data. However, the data from the input processing unit is temporarily stored in a memory or the like, and the stored data is searched to apply. Another character code may be collectively replaced.

[Effect of the embodiment]
According to the first communication apparatus, when the data input unit of the wireless communication module 2 has an input restriction, the restricted character code that is the input restriction in the communication module control unit 501 is replaced with another character code (conversion process). Then, after the input to the wireless communication module 2 and after the input, it was replaced again with the original restricted character code (reverse conversion process), and the SMS processing was performed, it could not be transmitted as SMS transmission with input restriction Data can be transmitted as an SMS message.

  According to the second communication device, when there is an input restriction in the data input unit of the wireless communication module 2, the restricted character code that is the input restriction in the input data conversion unit 506 is replaced with another character code (conversion processing). Then, after the input to the wireless communication module 2 and after the input, it was replaced again with the original restricted character code (reverse conversion process), and the SMS processing was performed, it could not be transmitted as SMS transmission with input restriction Data can be transmitted as an SMS message.

  In the present invention, the restricted character code, which is the input restriction, is converted into another code and input. After the input, the converted character code is converted back to the original restricted character code, and then the SMS process is performed. It is suitable for a communication apparatus that can transmit data that has not been sent as an SMS message.

  DESCRIPTION OF SYMBOLS 1 ... Mobile telephone apparatus, 2 ... Wireless communication module, 3 ... 1st communication apparatus, 3 '... 2nd communication apparatus, 101 ... Communication processing LSI, 102 ... Wireless Communication processing unit, 103 ... Memory, 104 ... Antenna, 105 ... Application LSI, 106 ... Keyboard, 107 ... Microphone, 108 ... Speaker, 109 ... Display, 201 .. Serial interface 202, 203 ... voice interface, 301 ... communication processing LSI data input / output path connector, 302 ... audio signal input path connector, 303 ... audio signal output path connector, 304 ... Radio signal input / output path connector, 401 ... Communication processing LSI data input / output path, 402 ... Audio signal input path, 403 ... Audio signal output path, 404 ... Radio signal input / output path 501 501 ... communication module control unit, 502 ... memory, 503 ... keyboard, 504 ... display, 505 ... antenna, 506 ... input data conversion unit

Claims (5)

A restriction table that stores restricted character codes that are restricted in use is provided. Refer to the restriction table for input data, and when the restriction character code is applicable, the restriction character code is converted into another character code and output. And a communication module control unit that outputs input data when it does not correspond to the restricted character code,
A wireless communication module that receives data output from the communication module control unit, detects the other character code, reversely converts the other character code to the restricted character code before conversion, and performs communication processing A communication apparatus comprising: A communication module control unit for outputting data including a restricted character code whose use is restricted;
A restriction table for storing the restriction character code is provided, and the restriction character code is converted into another character code when corresponding to the restriction character code by referring to the restriction table for data output from the communication module control unit. A data conversion unit that outputs input data when it does not correspond to the restricted character code, and
A wireless communication module that inputs data output from the data conversion unit, detects the other character code, reversely converts the other character code into the restricted character code before conversion, and performs communication processing; A communication apparatus comprising:   3. The communication apparatus according to claim 1, wherein the process of converting the restricted character code into another character code and the process of inversely converting the other character code into the restricted character code are performed by arithmetic processing. .   2. The process of converting a restricted character code into another character code and the process of inversely converting the other character code into the restricted character code are performed using a conversion table and an inverse conversion table. Or the communication apparatus of 2. When a restricted character code that is restricted in use is input, the restricted character code is ignored, and when a character code that is not the restricted character code is input, a wireless communication module that performs communication processing on the character code,
The wireless communication module, the different character code converting the limiting character code is input, detects the specific character code, and inversely transforms the previous SL-specific character code to said restricted character code, wireless communication module, which comprises carrying out the communication process.

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