JP4866288B2 - Data communication device and data line termination device - Google Patents

Description

The present invention relates to a data communication device having a data line termination device that performs data communication using a predetermined response content and response timing in response to an AT command from a data terminal device, and the data line termination device .

  As this type of data communication apparatus, as shown in FIG. 2, a data circuit terminating equipment (DCE) 7 is connected to a data terminal equipment (DTE: Data Terminal Equipment) 1, and the data terminal equipment 1 is connected to the AT. The data line terminating device 7 that has received the command enables communication with the data terminal device 1 using a predetermined response content and response timing, establishes wireless communication with the wireless network 17, and A device that performs data communication from the terminal device 1 to the server 19 is known (see, for example, Patent Document 1).

JP 2006-222491 A

  However, in the conventional data communication device, as shown in FIG. 6, the data terminal devices 1a to 1c and the data line terminators 7a to 7c having different manufacturers or software versions may be combined and reconfigured. In this case, the data line terminators 7a to 7c have different response contents and response timings for AT commands depending on manufacturers or software versions. Therefore, depending on the combination, data transmission / reception may not be performed normally as shown by the dotted line in the figure. There is a need for selecting a combination having good compatibility as indicated by a solid line, which requires a complicated operation.

An object of the present invention is to provide a data communication device and a data circuit terminating device which can make the response content and response timing corresponding to the data terminal device in the data circuit terminating device even when the manufacturer or software version is different.

In order to achieve the above object, a data communication apparatus according to the present invention is provided between a data terminal apparatus and a data circuit terminating apparatus that performs communication using a predetermined response content and response timing to an AT command from the data terminal apparatus be one configured with a, the data line terminal, a plurality of discrimination setting information corresponding to each of the previously plurality of said data terminal device, the plurality corresponding to each of the plurality of discrimination setting information Response contents and response timing are stored, and when an AT command is received from the data terminal device in the setting mode, the determination setting information included in the AT command is determined to determine the plurality of response contents and response timings. registration means for registering a corresponding response content and response timing from within, aT co from the data terminal device in a communication mode When receiving a command using a response content and response timing registered by said registering means, characterized in that a and response means for communicating between the data terminal equipment.
In order to achieve the above object, the data line terminating device of the present invention performs communication using a predetermined response content and response timing in response to an AT command from a data terminal device. The discrimination setting information corresponding to each of the terminal devices and the plurality of response contents and response timings corresponding to each of the plurality of discrimination setting information are stored, and when the AT command is received from the data terminal device, Stores the discrimination setting information included in the AT command, registers response contents and response timings corresponding to the discriminated setting information stored from a plurality of stored response contents and response timings, and communicates with the data terminal device It is characterized in that communication is performed using the registered response content and response timing when an AT command is received occasionally. .

According to the onset bright, it receives the data circuit-terminating equipment AT commands from the data terminal device in the setting mode, with reference to the received discrimination configuration information AT commands this, a plurality of response content and which were previously stored In order to extract and register the response content and response timing corresponding to this discrimination setting information from the response timing, the response means thereafter receives the AT command in the normal communication mode, and the response means sends the registered response content and response timing. Even if it is a combination of a data terminal device and a data line terminator with different manufacturers or software versions, the response contents and response timing appropriate for the data line terminator side can be used without changing the data terminal device side. You can use these, as in the past, are these differences? It is possible to eliminate a situation that can not be performed transfer of normal data with a simple configuration.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 2 is a schematic configuration diagram showing a data communication apparatus according to an embodiment of the present invention.
For example, data terminal device 1 (DTE: Data Terminal Equipment) configured by a vending machine or the like has data having a function of converting a signal transmitted / received to / from this data terminal device 1 or the like into a signal suitable for a communication line. A line terminator 7 (DCE: Data Circuit terminating Equipment) is connected. The data line terminator 9 can be connected to a wireless network 17 via radio, and a server 19 is connected to the wireless network 17 via a LAN line 18 that transmits and receives data using an optical fiber or the like. Yes.

FIG. 1 is a block diagram showing the data terminal device 1 and the data line terminating device 7 described above.
The data terminal device 1 includes a control unit 2, and a display unit 3, a storage unit 4, an operation unit 5, and an input / output unit 6 are connected to the control unit 2. Further, the data line termination device 7 has a control unit 8, and a storage unit 9, a display unit 10, an operation unit 11, an input / output unit 12, a transmission unit 13 and a reception unit 14 are connected to the control unit 8. In addition, a plurality of pieces of discrimination setting information n included in commands from the data terminal device 1 which are different for each manufacturer and version, for example, an AT command which is one of command systems used for controlling a modem or a terminal adapter, A storage means 16 constituted by a nonvolatile memory or other means in which a plurality of response contents and response timings respectively corresponding to the above are written in advance is connected. The antenna 15 connected to the transmission unit 13 and the reception unit 14 is for wirelessly connecting to the wireless network 17 shown in FIG. 2 to transmit and receive data. The input / output unit 12 of the data line termination device 7 and the input / output unit 6 of the data terminal device 1 are connected by a cable such as RS-232C, and data is transmitted via the input / output units 6 and 12. It is configured to transmit and receive.

  As described above, in the conventional data communication device, there is a case where it is desired to use the data terminal device 1 and the data line terminator 7 which are of different manufacturers or software versions in combination. May cause a communication error due to differences in response contents and response timing. However, in order to be able to cope with such a case without changing the configuration and software of the data terminal device 1, the data line terminating device 7 shown in FIG. For each data terminal device 1 having a different software version, a plurality of determination setting information n included in the AT command and a plurality of response contents and response timing corresponding to each of the determination setting information n are connected.

  Here, the response content is a response transmitted by the data line termination device 7 in response to a command transmitted from the data terminal device 1. For example, “OK”, “ERROR”, “NO CARRIER”, etc. are used, and data The response contents are selected and changed with respect to a plurality of commands transmitted from the terminal device 1 depending on the operation state of the data line terminating device 7 (during outgoing call, incoming call, wireless connection, etc.). The response timing is a time until the data line terminating device 7 transmits a response content in response to a command received from the data terminal device 1.

  Further, the data line terminating device 7 described above, when there is a setting mode detecting means for detecting that the AT command is received from the data terminal apparatus 1 in the setting mode, and when the AT command is detected by the setting mode detecting means, the AT When the command, for example, AT * MODE = n is received, the discrimination setting information n (n: flag for discriminating force) is written in the storage means 16, and the response information and response timing stored in advance are stored in the storage unit 16. Registration means for selecting and registering the response content and response timing corresponding to the discrimination setting information n. Further, when the data line termination device 7 detects that the AT command has been received from the data terminal device 1 in the normal communication mode and the AT command is detected by the communication mode detection unit, The response means for exchanging data with the data terminal device 1 using the response contents and the response timing already registered by the registration means are configured by a program.

  First, prior to operation in the normal communication mode, an AT command is transmitted from the data terminal device 1 to the data line terminating device 7 in the setting mode. Then, as shown in the flowchart of FIG. 4, in the data line terminating device 7, the AT command is detected by the setting mode detecting means in step S1, and the registering means receives, for example, AT * MODE = n in step S2. The discrimination setting information n included therein is written in the storage means 16, and the written discrimination setting information n corresponds to the discrimination setting information n from among a plurality of response contents and response timings stored in the storage means 16 in advance. The response content and response timing to be extracted are registered. This completes the setting process.

  Thereafter, when the data terminal device 1 is switched to the normal communication mode and transmits data from the data terminal device 1 to the server 19, first, the input / output unit 6 of the data terminal device 1 inputs / outputs the data line termination device 7 An AT command is transmitted to the unit 12. The data line terminating device 7 that has received this responds as shown in the flowchart of FIG. First, when the communication mode detecting means detects that the AT command from the data terminal device 1 has been received in step S3, a plurality of data previously stored in the storage means 16 based on the discrimination setting information n by the registration means. Since the response content and response timing corresponding to the data terminal device 1 are registered, the response means extracts the response content and response timing corresponding to the registered data terminal device 1 in step S4. . Next, in step S5, the response means performs communication with the data terminal device 1 using the extracted response content and response timing. Therefore, even if the data terminal device 1 and the data line terminating device 7 having different manufacturers and software versions are combined, appropriate response contents and response timing corresponding to the data terminal device 1 are used. A communication error due to a difference in response contents and response timing does not occur.

  Therefore, even when one of the data terminal devices 1a to 1c of different manufacturers is connected to the data line terminating device 7 as shown in FIG. 3, the problem of communication abnormality is avoided. That is, even when the data terminal device 1a manufactured by A company is used, when the AT command in the setting mode is transmitted to the data circuit terminating device 7, the registration means of the data circuit terminating device 7 uses the data terminal device 1a manufactured by A company. The discrimination setting information n = 1 in the AT command, AT * MODE = n is read, and the response content and response timing corresponding to the discrimination setting information n = 1 are called from the storage means 16 in which a plurality of response contents and response timings are stored in advance. sign up. Thereafter, when an AT command is input to the data circuit terminating device 7 in the normal communication mode, the response means of the data circuit terminating device 7 uses the response contents and the response timing already registered by the registering means, and the data made by the company A Communication with the terminal device 1a can be performed.

  Even when the data terminal device 1b manufactured by B company is used, when the AT command in the setting mode is transmitted to the data circuit terminating device 7, the registration means of the data circuit terminating device 7 uses the data terminal device 1b manufactured by B company. The discrimination setting information n = 2 in the AT command AT * MODE = n is read, and the response content and response timing corresponding to the discrimination setting information n = 2 are called from the storage means 16 in which a plurality of response contents and response timings are stored in advance. sign up. Thereafter, when an AT command is input to the data circuit terminating device 7 in the normal communication mode, the response means of the data circuit terminating device 7 uses the response contents and response timing already registered by the registering means, and the data manufactured by company B It becomes possible to communicate with the terminal device 1b.

  Similarly, even when the data terminal device 1c manufactured by the company C is used, when the AT command in the setting mode is transmitted to the data circuit terminating device 7, the registration means of the data circuit terminating device 7 uses the data terminal device 1c manufactured by the company C. Of the AT command, AT * MODE = n, read the setting information n = 3, and stores the response contents and response timing corresponding to the determination setting information n = 3 from the storage means 16 in which a plurality of response contents and response timings are stored in advance. Register for a call. Thereafter, when an AT command is input to the data line termination device 7 in the normal communication mode, the response means of the data line termination device 7 uses the response contents and response timing already registered by the registration means, and the data made by the company C Communication with the terminal device 1c can be performed.

  Thereafter, the data line terminating device 7 is wirelessly connected to the wireless network 17 by the same method as before, and data can be transmitted from the data terminal device 1 to the server 19.

  As shown in FIG. 6, when a data communication device is configured by combining the data terminal devices 1a to 1c of each manufacturer and the data line termination devices 7a to 7c of each manufacturer, conventionally, due to the difference in response contents and response timing. Although it was necessary to distinguish between a combination that can correctly exchange data as shown by a solid line and a combination that cannot correctly exchange data as shown by a dotted line, the data line termination device 7 shown in FIG. 1 is used. Thus, even if the data line termination device 7 having a common configuration is used regardless of the manufacturer or software version as shown in FIG. 3, the desired response contents and the data terminal devices 1a to 1c of the manufacturers are always desired. Response timing can be used.

  When the data communication device is configured using the data line termination device 7 described above, when the AT command is transmitted from the data terminal device 1 to the data line termination device 7 in the setting mode, the registration means of the data line termination device 7 receives the received AT. Refers to the command discrimination setting information, extracts and registers the response content and response timing corresponding to this setting information from the information stored in advance in the storage means 16, and then the data line terminating device in the normal communication mode The response means 7 uses the registered response content and response timing, and the data is normally transmitted due to the difference in response content and response timing between the data terminal device 1 and the data line terminal device 7 as in the prior art. It is possible to eliminate the situation in which it is not possible to send and receive with a relatively simple configuration. Therefore, even in the case of a combination of a different data terminal device 1 and data line termination device 7, the data terminal device 1 side needs an interface, other configurations and software in accordance with the data line termination device 7 each time as in the past. The same data line termination device 7 can be used without changing the hardware and software of the data line termination device 7 without changing.

  The data communication apparatus according to the present invention is not limited to the configuration shown in FIG. 1 and can be applied to other configurations.

It is a block block diagram which shows the principal part in the data communication apparatus by one embodiment of this invention. It is a schematic block diagram which shows the data communication apparatus by one embodiment of this invention. It is a schematic block diagram which shows the example of a connection between the data terminal device and data circuit | line terminal apparatus in the data communication apparatus shown in FIG. 3 is a flowchart showing an operation in a setting mode in the data line terminating device shown in FIG. 1. 2 is a flowchart showing an operation in a communication mode in the data line terminating device shown in FIG. It is a schematic block diagram which shows the example of a connection between the data terminal device and data circuit | line terminal device in the conventional data communication apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Data terminal device 2 Control part 6 Input / output part 7 Data line termination device 8 Control part 12 Input / output part 16 Memory | storage means

Claims (2)

A data communication apparatus comprising: a data terminal apparatus; and a data line terminal apparatus that performs communication using a predetermined response content and response timing with respect to an AT command from the data terminal apparatus. device in advance a plurality of discrimination setting information corresponding to each of the plurality of the data terminal equipment, stores a plurality of response content and response timing corresponding to each of the plurality of discrimination setting information, the setting mode registration means for registering the response content and response timing corresponding among the data terminal wherein the plurality of response content to determine the discrimination setting information and response timing included an AT command to the AT command when receiving from device And when receiving an AT command from the data terminal device in the communication mode, Recording the data communication apparatus is characterized by providing a response means for communicating between the data terminal equipment using the response content and response timing. A data line termination device that performs communication using an AT command from a data terminal device by using a predetermined response content and response timing, wherein the setting information corresponding to each of a plurality of data terminal devices, A plurality of response contents and response timings corresponding to each of the discrimination setting information are stored, and when the AT command is received from the data terminal device, the discrimination setting information included in the AT command is stored, and a plurality of storages are stored. The response content and response timing corresponding to the stored determination setting information are registered from the response content and response timing stored, and when the AT command is received during communication with the data terminal device, the registered response content and response timing are displayed. A data line terminator characterized by using for communication.

Images