JP2007220136A - Module attachable to data tarminal equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a card module which can inexpensively be used for various uses, and attachable to a personal digital assistant. <P>SOLUTION: When loaded on the slot of a personal digital assistant PDA, the card module CM executes an application-specific program and transmits the result to the personal digital assistant PDA. In this case, the personal digital assistant PDA is inquired about bit width of a transmission path with the personal digital assistant PDA. Then, transmits an execution result after adjusting the number of bits of the execution result based on an inquired result. The portable information terminal PDA outputs the received execution result from an output part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a data terminal device to which a module can be attached, and more specifically, is configured to be attachable to a data terminal device, executes a program for a specific purpose stored therein, and the execution result thereof The present invention relates to a data terminal device in which a card module that transmits a message to the data terminal device can be mounted.

  In recent years, various portable devices such as portable game machines, portable music players, and portable navigation devices are on the market. A user enjoys a game using a portable game machine, and further listens to music using a portable music player. In addition, the user grasps his / her position by using the portable navigation device or guides the route using the portable navigation device.

  However, since the conventional portable device is specialized for a single application as described above, there is a problem that the user has to purchase the portable device individually according to the application. For example, if a user wants to listen to music, has directions, or wants to enjoy a game, he must purchase a portable music player, portable navigation device, and portable game machine.

  Therefore, the present invention is to provide a card module that can be used for various purposes at low cost by being mounted on a data terminal device.

  In order to achieve the above object, the present invention has the following configuration. A first invention is a data terminal device to which a module can be attached. The module transmits a first storage unit that stores a program for a specific application, a first processing unit that executes a program stored in the first storage unit, and an execution result of the first processing unit. The data terminal device is inquired about the bit width of the first bus and the second bus of the data terminal device, and the bit width of the second bus transmitted from the data terminal device is registered. A first communication controller that adjusts the number of execution result bits transmitted on the bus based on the registered bit width of the second bus and transmits the result to the data terminal device; The data terminal device also includes a connector to which the module can be attached and detached, and a second communication controller that can receive an execution result transmitted from the first communication controller. Further, the data terminal device outputs the execution result transmitted from the first communication controller from its output unit.

  According to the first aspect of the invention, the module has a configuration for storing and executing a program for a specific application, but it is the data terminal device that outputs the execution result to the user. Therefore, for example, when a user wants to listen to music, if a module for the application is mounted on the data terminal device, the data terminal device becomes a music player. When navigation is necessary, if a module for navigation use is mounted on the data terminal device, the data terminal device becomes a navigation device. Furthermore, when the user wants to enjoy the game, if the module storing the game program is attached to the data terminal device, the data terminal device becomes a dedicated game machine. As is clear from the above, according to the first invention, it is possible to deal with a plurality of uses by merely preparing a plurality of modules storing different programs and one data terminal device. This eliminates the need for the user to purchase a number of devices specialized for the application, thereby reducing the user's economic burden. Further, according to the first invention, the module executes a program for a specific application, so that the module can be configured by using parts that are optimal for each application.

  The second invention is dependent on the first invention, and the data terminal device is a portable information terminal, a personal computer, or a mobile phone. According to the second invention, the same effect as the first invention can be obtained.

  A third invention is a game apparatus in which a module can be mounted. The module includes a first storage unit that stores a game program, a first processing unit that executes a program stored in the first storage unit, and a first bus that transmits an execution result of the first processing unit. The game device is inquired about the bit width of the second bus of the game device, the bit width of the second bus transmitted from the game device is registered, and then transmitted over the first bus. And a first communication controller that adjusts the number of bits of the coming execution result based on the registered bit width of the second bus and transmits the adjusted result to the game device. Further, the game apparatus outputs the execution result transmitted from the first communication controller from its output unit.

  A fourth invention is a navigation device to which a module can be attached. The module includes a first storage unit that stores a navigation program, a first processing unit that executes a program stored in the first storage unit, and a first bus that transmits an execution result of the first processing unit. The data terminal device is inquired about the bit width of the second bus possessed by the navigation device, the bit width of the second bus transmitted from the navigation device is registered, and then transmitted over the first bus. A first communication controller that adjusts the number of bits of the incoming execution result based on the registered bit width of the second bus and transmits it to the navigation device. Further, the navigation device outputs the execution result transmitted from the first communication controller from its output unit.

  A fifth aspect of the present invention is a music playback device in which a module can be mounted. The module stores a first storage unit that stores a music playback program, a first processing unit that executes a program stored in the first storage unit, and a first transmission unit that transmits an execution result of the first processing unit. The data terminal device is inquired about the bit width of the bus and the second bus of the music playback device, the bit width of the second bus transmitted from the music playback device is registered, and then on the first bus And a first communication controller that adjusts the number of bits of the execution result transmitted based on the registered bit width of the second bus and transmits it to the music player. Further, the music playback device outputs the execution result transmitted from the first communication controller from its output unit.

  A sixth invention is a data terminal device to which a module can be attached. The module executes the application-specific program stored in the module, inquires the data terminal device about the bus bit width of the data terminal device, and adjusts the number of bits of the execution result to a predetermined number. Send to. The data terminal device receives control results and an execution result of which the number of bits is adjusted by the module, a receiving unit capable of receiving from the module, a bus capable of transmitting the execution result received by the receiving unit, and the transmission via the bus A process for receiving the control information from the storage device that can store the execution result, the built-in output unit, and the receiving unit, sending the bus bit width to the module, and outputting the execution result stored in the storage unit from the output unit A part. The receiving unit receives the execution result after transmitting the bit width of the bus of the data terminal device to the module. The output unit outputs the execution result according to the processing unit. The predetermined number is the bit width of the bus. According to the sixth invention, the module or the data terminal device has a function of adjusting the number of bits, and thereby, an execution result that matches the bit width of the bus of the data terminal device is configured. As a result, communication can be performed correctly between the module and the data terminal device.

  A seventh invention is a data terminal device to which a module can be attached. The module includes a storage unit that stores a program for a specific application, a processing unit that executes the program stored in the storage unit, a data transmission path that can transmit an execution result of the processing unit, a data terminal device, and the module. Inquires the data terminal device for transmission capacity information, which is information relating to the capacity that can be transmitted between them, registers the transmission capacity information transmitted from the data terminal device, and then sets the number of bits when transmitting the execution result. A first communication controller that adjusts based on the registered transmission capacity information and transmits the information to the data terminal device. In addition, the data terminal device includes a connector to which the module can be attached and detached, and a second communication controller capable of receiving the execution result transmitted from the first communication controller, and the execution transmitted from the first communication controller. The result is output from its own output unit. According to the seventh aspect, the same effect as in the first aspect can be obtained.

  In an eighth aspect based on the seventh aspect, the transmission capacity information refers to the bit width, frequency band, or data rate of the data transmission path, or the number of packets or the packet length in packet communication on the data transmission path. It is information about.

  According to the present invention, the user does not need to purchase a number of devices specialized for the application, and the economic burden on the user can be reduced. In addition, since the module executes a program for a specific application, the module can be configured using components that are optimal for each application.

  FIG. 1 is a front view of a card module CM and a portable information terminal PDA according to an embodiment of the present invention. FIG. 2 is a rear view of the card module CM and the portable information terminal PDA.

  1 and 2, the card module CM preferably has a card shape. Further, in the card module CM, a circuit board (not shown) on which a connector 15 for connecting to the portable information terminal PDA is mounted is accommodated.

As shown in FIG. 3A, the card module CM includes an MPU (accelerator) 11, a ROM 12, a nonvolatile RAM 13, a communication controller 14, a connector 15, and a bus 16. The ROM 12 stores at least a program P ₁ for establishing a connection with the portable information terminal PDA and a predetermined program P ₂ . Predetermined program P _2, depending on the particular application which is realized by the portable information terminal PDA card module CM, as described in a predetermined programming language. For example, a program for music playback, program or game program for navigation, is an example of a program P _2. The MPU 11 executes the programs P ₁ and P ₂ while using the RAM 13 as a work area. The communication controller 14 transmits control information and data to the portable information terminal PDA, and receives control information and data therefrom. Furthermore, the communication controller 14 adjusts the number of bits described later. The connector 15 is used to connect the card module CM and the portable information terminal PDA. The bus 16 is a bundle of signal lines for connecting the MPU 11, the ROM 12, the RAM 13, and the communication controller 14. In the present embodiment, among the signal lines of the plurality of signal lines, m lines are used for data transfer, and p lines are used for transmission / reception of control information.

  The specifications of the above card module CM are basically determined by the designer. More specifically, each designer selects a combination of MPU 11, ROM 12, RAM 13, connector 15, and bus 16 that is optimal for music playback, navigation, or game applications in consideration of manufacturing costs and the like. However, devices other than those described above may be required depending on the application. For example, in order to realize navigation using GPS, a dedicated receiver and antenna are required. However, since such an additional configuration is not the essence of the present invention, illustration and description thereof are omitted.

In the bus 16, the number m of data lines for data transfer (that is, the bit width m) is selected from 8, 16, 32, 64, 128, and 256 depending on the application. The connector 15 will be described in detail with reference to FIG. FIG. 3B shows a terminal arrangement when the connector 15 is viewed from the direction of the arrow A in FIG. In FIG. 3B, one hatched rectangle is one terminal. The total number k of terminals of the connector 15 is selected so as to support the plurality of bit widths m described above, and the k terminals are respectively connected to the communication controller 14. In addition, it is defined that p terminals determined in advance among the total number k of terminals are used as control terminals C. In the illustrated example, four terminals positioned near the right end of the paper surface are used as control terminals C _{1 to} C ₄ . The terminals except for the p terminals can be used as the data terminal D, but which terminal is used is determined in advance according to the bit width m. For example, when a 32-bit bus 16 (that is, m = 32) is selected, 32 terminals D _{1 to} D ₃₂ from the left end of the page are used for data transfer. In the case of other bit widths m (for example, m = 64), it is similarly defined which terminal D is used.

  As described above, the specifications of the card module CM are determined by the designer in principle, but the outer shape of the card module CM and the physical shape of the connector 15 need to be the same regardless of the application.

  Reference is again made to FIGS. 1 and 2. The portable information terminal PDA is a portable information device such as 3Com Palm IIIx and IBM Japan WorkPad (both are trademarks). However, the portable information terminal PDA of this embodiment includes a slot S as shown in FIG. The slot S is configured such that a card module CM can be inserted, and a connector 25 having the same physical specifications as that of the connector 15 is disposed at the back of the slot S.

As shown in FIG. 4A, the portable information terminal PDA described above includes a CPU 21, a ROM 22, a RAM 23, a communication controller 24, a connector 25, an output unit 26, an input device 29, and a bus 210. I have. The ROM 22 stores at least a program P ₃ for establishing a connection with the portable information terminal PDA. The CPU 21 executes the program P ₃ while using the RAM 23 as a work area. The communication controller 24 transmits control information or data to the card module CM, and receives control information or data therefrom. Further, the communication controller 24 adjusts the number of bits to be described later. The connector 25 is used for connecting the portable information terminal PDA and the card module CM. The output unit 26 typically includes a display 27 and a speaker 28. The input device 29 typically includes a pen and a touch sensor operated by a user, and a key. The bus 210 is a bundle of signal lines for connecting the CPU 21, ROM 22, RAM 23, communication controller 24, display 27, speaker 28, and input device 29. In the present embodiment, among the signal lines of the plurality of signal lines, n lines are used for data transfer, and p lines are used for transmission / reception of control information. In the bus 210, the number n (that is, the bit width n) of signal lines for data transfer is selected to any one of 8, 16, 32, 64, 128, and 256 based on the specification. Therefore, the bit width n may be the same as or different from the bit width m of the bus 16 on the card module CM side.

Here, the connector 25 will be described in detail with reference to FIG. FIG. 4B shows the terminal arrangement when the connector 25 is viewed from the direction of arrow B in FIG. One black rectangle is one terminal. Since the physical specification of the connector 25 is the same as that of the connector 15, the description is simplified. Like the connector 15, the connector 25 has k terminals, and all the terminals are connected to the communication controller 24. Moreover, it is prescribed | regulated that p terminals predetermined are used as the terminal C for control. Here, since the p control information lines of the bus 16 need to be connected to the p control information lines of the bus 210, in the present embodiment, 4 lines positioned near the left end of the page. One is used as a terminal C ₁ -C ₄ for control. Further, it is defined that the terminals excluding the p pieces can be used as the data terminal D. Further, which terminal is used is also defined in advance according to the bit width n. In FIG. 4B, when the bus 210 having a 64-bit width (when n = 64) is used, 64 terminals D _{1 to} D ₆₄ from the right end of the page are used for data transfer. In the case of other bit widths n (for example, n = 128), which terminal D is used is similarly defined.

  Next, operation examples of the card module CM and the portable information terminal PDA configured as described above will be described with reference to FIGS. The user inserts the card module CM into the slot S of the portable information terminal PDA (see FIG. 2A) and pushes the card module CM all the way back (see FIG. 2B). Thereby, each terminal of the connector 15 and each terminal of the connector 25 are connected, and the card module CM is preferably supplied with a power supply voltage from the portable information terminal PDA. Note that the card module CM may be supplied with a power supply voltage from a battery provided therein.

In the portable information terminal PDA, CPU 21, when recognizing that the card module CM is connected to the connector 25, starts the execution of the program P ₃ (Fig. 5; sequence SQ1). Then, the CPU 21 waits for control information to be transmitted from the card module CM side.
In the card module CM, when the power supply voltage is supplied, the MPU 11 starts executing the program P ₁ (sequence SQ2).

Next, the MPU 11 transmits the control information CI ₁ included in the program P ₁ to the communication controller 14 through the control information signal line in the bus 16 (sequence SQ3). Here, the control information CI ₁ is control information for inquiring the portable information terminal PDA about the bit width n of the bus 210. Further, the control information CI ₁ includes information indicating the bit width m in order to notify the portable information terminal PDA of the bit width m of the bus 16. Next, the communication controller 14 sends the received control information CI ₁ to the control terminal C of the connector 15 (sequence SQ4). As a result, control information CI ₁ is applied to terminal C of connector 25 of portable information terminal PDA (sequence SQ5).

When receiving the control information CI ₁ via the terminal C of the connector 25, the communication controller 24 of the portable information terminal PDA extracts the bit width m from the control information CI ₁ . The communication controller 24 registers the extracted bit width m in an internal storage unit (not shown) represented by a register or the like (sequence SQ6). Thereafter, the communication controller 24 transmits the received control information CI ₁ to the CPU 21 through the control information signal line in the bus 210 (sequence SQ7). In response to receiving control information CI ₁ , CPU 21 transmits control information CI ₂ included in program P ₃ to communication controller 24 through a signal line for control information in bus 210 (sequence SQ 8). Here, the control information CI ₂ includes information on the bit width n in order to notify the bit width n of the bus 210 to the portable information terminal PDA. After transmitting the control signal CI ₂ , the CPU 21 ends the execution of the program P ₃ and waits for data to be transmitted from the card module CM side this time. The communication controller 24 sends the received control information CI ₂ toward the control terminal C of the connector 25 (FIG. 6; sequence SQ9). As a result, the control information CI ₂ is given to the terminal C of the connector 15 of the card module CM (sequence SQ10).

When the communication controller 14 of the card module CM receives the control information CI ₂ via the terminal C of the connector 15, it extracts the bit width n from the control information CI ₂ . The communication controller 14 registers the extracted bit width n in an internal storage unit (not shown) represented by a register or the like (sequence SQ11). Thereafter, the communication controller 14 transmits the received control information CI ₂ to the MPU 11 through the signal line for control information in the bus 16 (sequence SQ12). The MPU 11 determines that the connection between the card module CM and the portable information terminal PDA has been established by receiving the control information CI ₂ and ends the execution of the program P ₁ . Further, MPU 11 starts execution of program P ₂ (sequence SQ13). At this time, the MPU 11 stores the execution result of the program P _{2 in} the RAM 13. The execution result is composed of video data, image data, audio data, character data, or a combination of two or more of these data.

Further, when the MPU 11 wants to output the execution result of the program P ₂ from the output unit 26 of the portable information terminal PDA, the execution result is output from the RAM 13 in units of m bits through m signal lines for data transfer in the bus 210. The data is transmitted to the communication controller 14 (sequence SQ14). That is, the execution result is transferred to the communication controller 14 in parallel every m bits. When the execution result in units of m bits starts to arrive, communication controller 14 starts adjusting the number of bits (sequence SQ15). In adjusting the number of bits, first, the communication controller 14 compares the magnitude relationship between the bit width n registered in the sequence SQ11 and the bit width m. When m> n, the communication controller 14 divides the execution result in units of m bits into n bits and stores the result in an internal FIFO (First In First Out). The communication controller 14 repeats this division and storage until the last execution result is processed. When m> n, the FIFO of the communication controller 14 sends the stored execution result in parallel to the data terminals D _{1 to} D _n of the connector 15 in units of n bits.

On the other hand, if m> n does not hold, the communication controller 14 stores the m-bit unit execution result in the above FIFO without processing. The communication controller 14 repeats storing in the FIFO until the last execution result is processed. If m> n is not satisfied, the FIFO sends the stored execution result in m bits to m terminals D _{1 to} D _m used for data transfer of the connector 15 in parallel (FIG. 7; Sequence SQ16).

As a result, the execution result is given to the data transfer terminals D _{1 to} D _n or D _{1 to} D _m of the connector 25 of the portable information terminal PDA in units of n bits or m bits (sequence SQ17). The communication controller 24 of the portable information terminal PDA starts adjusting the number of bits when the execution result starts to arrive via the data transfer terminals D _{1 to} D _n or D _{1 to} D _m of the connector 25 (sequence SQ18). ). In adjusting the number of bits, first, the communication controller 24 compares the magnitude relationship between the bit width m and the bit width n registered in the sequence SQ6.

  When m> n, the communication controller 24 arrives at the execution result adjusted to the bit width n of the bus 210 and transfers the received n-bit execution result to the RAM 23 as it is. The communication controller 24 repeats the transfer to the RAM 23 until the last execution result is processed. On the other hand, when m> n is not satisfied, the communication controller 24 arrives at the execution result as it is with the bit width m of the bus 16, so a dummy word of (nm) bits is added to the received execution result in m bits. The data is padded and transferred to the RAM 23. The communication controller 24 repeats padding and transfer until the last execution result is processed. With the above padding, the execution result is stored in the RAM 23 in units of n bits (sequence SQ19).

  When all the n-bit execution results are stored in RAM 23, CPU 21 transmits an instruction to output unit 26 so as to output the execution results (sequence SQ20). Here, it should be noted that when the execution result is padded with a dummy word, the CPU 21 sets the dummy word at the timing when the sequence SQ19 ends or when all the execution results are aligned in the RAM 13. remove. Further, the CPU 21 controls the transfer of the execution result from the RAM 13 to the output unit 26. As a result, the output unit 26 receives and outputs the execution result stored in the RAM 13 in response to the instruction of the CPU 21 (sequence SQ21).

Incidentally, during the execution of a program P _2, the user may operate the input device 29. The input device 29 generates input information that identifies a user operation. The generated input information is processed by the CPU 21 and transmitted to the card module CM side. At that time, since the operations of the constituent parts of the portable information terminal PDA and the card module CM are clear from the above description, the description thereof is omitted.

As described above, the card module CM has a configuration for storing and executing the program P ₂ for a specific application, and the execution result is output from the output unit 26 of the portable information terminal PDA. Therefore, for example, when the user wants to listen to music, if the card module CM for the application is mounted on the portable information terminal PDA, the portable information terminal PDA becomes a music player. When navigation is required, if a card module CM for navigation use is mounted on the portable information terminal PDA, the portable information terminal PDA becomes a navigation device. Further, when the user wants to enjoy the game, if the card module CM storing the game program is attached to the portable information terminal PDA, the portable information terminal PDA becomes a dedicated game machine.

As is clear from the above, according to the present embodiment, a plurality of modules storing a program P ₂ capable of providing different uses and a single portable information terminal PDA are prepared. Can respond. As a result, the financial burden on the user can be reduced.

Further, the card module CM since executing only program P ₂ of a particular application, the parts of the card module CM may select the best one for each application. Furthermore, the portable information terminal PDA only needs to have at least a function capable of outputting the execution result, and high specifications are not required.

  In the above description, the card module CM is described as being attached to the portable information terminal PDA. However, the card module CM may be mounted on a data terminal device represented by a personal computer or a mobile phone.

The front view of card module CM and personal digital assistant PDA concerning one embodiment of the present invention Rear view of card module CM and portable information terminal PDA shown in FIG. Block diagram showing the basic hardware configuration of the card module CM shown in FIG. Block diagram showing a schematic hardware configuration of the portable information terminal PDA shown in FIG. Sequence chart showing communication procedure of first half part between card module CM and portable information terminal PDA Sequence chart showing communication procedure of intermediate part between card module CM and portable information terminal PDA Sequence chart showing the communication procedure of the second half part between the card module CM and the portable information terminal PDA

Explanation of symbols

CM card module 11 MPU (Accelerator)
12 ROM
13 RAM
14 Communication Controller 15 Connector 16 m-bit Bus PDA Personal Digital Assistant 21 CPU
22 ROM
23 RAM
24 Communication Controller 25 Connector 26 Output Unit 27 Display 28 Speaker 29 Input Device 210 n-bit Bus

Claims (8)

A data terminal device to which a module can be attached,
The module is
A storage unit for storing a program for a specific application;
A processing unit for executing a program stored in the storage unit;
A first bus for transmitting the execution result of the processing unit;
Queries the data terminal device for the bit width of the second bus that the data terminal device has, registers the bit width of the second bus transmitted from the data terminal device, and then, on the first bus, A first communication controller that adjusts the number of transmitted bits of the execution result based on the registered bit width of the second bus and transmits the data to the data terminal device;
The data terminal device
A connector capable of detaching the module;
A second communication controller capable of receiving the execution result transmitted from the first communication controller;
A data terminal device that outputs an execution result transmitted from the first communication controller from its own output unit.   The data terminal device according to claim 1, wherein the data terminal device is a personal digital assistant, a personal computer, or a mobile phone. A game device in which a module can be mounted,
The module is
A storage unit for storing game programs;
A processing unit for executing a program stored in the storage unit;
A first bus for transmitting the execution result of the processing unit;
The game device is inquired about the bit width of the second bus of the game device, the bit width of the second bus transmitted from the game device is registered, and then transmitted on the first bus. A first communication controller that adjusts the number of bits of the result of execution based on the bit width of the registered second bus and transmits the adjusted result to the game device;
A game device that outputs an execution result transmitted from the first communication controller from its own output unit. A navigation device to which a module can be attached,
The module is
A storage unit for storing the navigation program;
A processing unit for executing a program stored in the storage unit;
A first bus for transmitting the execution result of the processing unit;
The data terminal device is inquired about the bit width of the second bus possessed by the navigation device, the bit width of the second bus transmitted from the navigation device is registered, and then transmitted on the first bus. A first communication controller that adjusts the number of bits of the execution result coming based on the bit width of the registered second bus and transmits the adjusted result to the navigation device;
A navigation device that outputs an execution result transmitted from the first communication controller from its output unit. A music playback device to which a module can be attached,
The module is
A storage unit for storing a music playback program;
A processing unit for executing a program stored in the storage unit;
A first bus for transmitting the execution result of the processing unit;
The music playback device is inquired about the bit width of the second bus of the music playback device, the bit width of the second bus transmitted from the music playback device is registered, and then the first bus is transmitted over the first bus. A first communication controller that adjusts the number of transmitted bits of the execution result based on the registered bit width of the second bus and transmits the adjusted result to the music player;
A music playback device that outputs an execution result transmitted from the first communication controller from its output unit. A data terminal device to which a module can be attached,
The module executes a program for a specific application stored in the module, inquires of the data terminal device about the bus bit width of the data terminal device, adjusts the number of bits of the execution result to a predetermined number, and Send it to the data terminal,
The data terminal device
A receiving unit capable of receiving control information and an execution result of which the number of bits is adjusted by the module, from the module;
A bus capable of transmitting the execution result received by the receiving unit;
A storage device capable of storing the execution result transmitted via the bus;
Built-in output section;
A control unit that receives control information from the reception unit, sends a bus bit width to the module, and outputs the execution result stored in the storage unit from the output unit;
The receiving unit receives the execution result after transmitting the bit width of the bus of the data terminal device to the module,
The built-in output unit outputs the execution result according to the processing unit,
The predetermined number is a data terminal device which is a bit width of a bus. A data terminal device to which a module can be attached,
The module is
A storage unit for storing a program for a specific application;
A processing unit for executing a program stored in the storage unit;
A data transmission path capable of transmitting the execution result of the processing unit;
Queries the data terminal device for transmission capacity information that is information relating to the capacity that can be transmitted between the data terminal device and the module, registers the transmission capacity information transmitted from the data terminal device, and then A first communication controller that adjusts the number of bits when transmitting the execution result based on the registered transmission capacity information, and transmits the result to the data terminal device;
The data terminal device
A connector capable of detaching the module;
A second communication controller capable of receiving the execution result transmitted from the first communication controller;
A data terminal device that outputs an execution result transmitted from the first communication controller from its own output unit.   The transmission capacity information is information related to the bit width, frequency band, or data rate of the data transmission path, or the number of packets or the packet length in packet communication on the data transmission path. Data terminal equipment.

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