JPS62263752A - Data communication equipment - Google Patents

Abstract

PURPOSE:To send data in a short period and to make a telephone charge cheap by storing once a numeral as the data inputted from an input device into a memory, sending the data in a DTMF(Dual Tone Multi-frequency) signal when the data is not zero and preventing the transmission when zero. CONSTITUTION:The key of an input device 53 is operated to store data in a memory 55 in advance. In sending the data, a CPU 56 resets at first a data number I to 0, whether or not the number (data) corresponding to the data number I exists (zero or not) is judged, and when the data is zero, the data number I is incremented by one. When not zero, the number is sent as the data, printed on a printer 46 as required, and when the sending of the data is finished, the data number I is incremented by one. Thus, when the number is zero, the data is skipped not to be sent, and the data is sent efficiently in a short period.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data communication device that transmits and receives data via a telephone line.

[Summary of the invention]

In the present invention, the data is sent only when the number is not zero.

[Conventional technology]

FIG. 20 shows a configuration for transmitting and receiving data between computers via a telephone line.

For example, a relatively small computer 1 such as a personal computer includes a main body 2, an input device 3 such as a keyboard,
It is composed of a display device 4 such as a CRT. 5 is a modem telephone, and as shown in FIG. 21, for example, data sent from the computer 1 to the telephone line 6 is transmitted through FSX,
A modem 11 which modulates with a predetermined method such as PSK and demodulates the modulated signal from the telephone line 6 into high-level and low-level digital signals and outputs them to the computer 1;
It is integrated with the telephone unit 12. NCU (Netw)
Ork Control Unit) section 13 switches and connects telephone line 6 to modem 11 and telephone section 12 . The audio signal to the telephone unit 12 is sent to the monitor speaker 14.
It is now possible to monitor. 154, and outputs a signal corresponding to a predetermined telephone number to the telephone line 6.

Equipment with such a configuration is installed at locations A and B.

For example, if the autodial device 15 of location A (or location B) is
Call the phone of the device at ground (or ground A).

When the device at location B responds, the digital signal from computer 1 at location A is modulated by modem 5 and sent to telephone line 6.
The data is sent to the modem 11 at location B (or location A) via.

The modem 11 at location B (or location A) demodulates the modulated signal from the telephone line 6 into the original signal and supplies it to the computer 1.

When performing data communication via a telephone line in this way, there is a drawback that a computer 1 and a modem 11 are required on both the sending and receiving sides. Using a telephone of the type,
A system that recognizes voice signals input from each telephone using a voice recognition device on the receiving side, and inputs the recognized signals as digital signals to a computer on the receiving side.

It is proposed as a non-store sales system. In this system, data can also be input by key operations on a so-called telephone, and it is also possible to call a telephone from the computer side and request input of data from the telephone, a so-called request.

[Problem that the invention seeks to solve]

For example, even if the quantity of the product to be ordered is zero, such a system sends data indicating that it is zero to the receiving side, so it takes time to send and receive the data and has the disadvantage that telephone charges increase. there were.

[Means for solving problems]

The present invention relates to a data communication device that sends data via a telephone line to a relatively small computer that processes input data according to a predetermined program, and an input device that inputs at least numbers as data;
The device is equipped with a memory for storing the numbers input by the A position, a transmitting device for transmitting the numbers stored in the memory by a DTMF signal, and a means for determining the numbers stored in the memory, and transmits the numbers when the numbers are not zero. , is characterized in that it is not transmitted when it is in the atmosphere.

[Effect]

The numbers as data inputted by the input device are temporarily stored in the memory. It is determined whether or not this stored number is zero, and if it is not zero, it is sent out by the DTMF signal, but if it is zero, it is not sent out.

〔Example〕

FIG. 1 represents a network of data communication devices according to the present invention. A relatively small-sized computer 1 such as a personal computer consisting of a main body 2, an input device 3, and a display device 4 is prepared as the parent device as in the case described above. 21
is a controller, which is connected to the telephone line 6 of the attached telephone 22, and which is connected to the computer 1. modem 2
3. Control the recording/reproducing device 24, etc.

FIG. 3 shows a more detailed block diagram of the controller 21. 31 is a line interface, which includes a closing part that closes and opens the telephone line, a calling signal detecting part that detects an incoming calling signal, a polarity detecting part that detects the polarity of the DC loop of the telephone line, and the other party. CPC (Calling Party
Control) detection unit, attached telephone Ja2
The telephone line 6 has a hook detection section that detects the hook state of the telephone line 6, and a voice detection section that detects the presence or absence of a voice signal on the telephone line 6. 32 is an interface for a computer such as R5232C. 33 is a transmitting/receiving device, i7DTMF (Dual T).

ne Multi-frequency) signals and receives them. When the controller 21 is configured integrally with the attached telephone 22, the transmitting/receiving device 33 can also be used as an original device of the telephone that generates a DTMF signal when the keys of the telephone 22 are operated. A switch 34 switches the signal flow path (indicated by a thick line in the figure). 35 is a C such as a microprocessor as a control device.
This is a PU, which issues control signals (indicated by thin lines in the figure) to each circuit, device, means, etc. to control them.

For the base units installed at locations A and B (of course, location A may only be used), a call is made to location C via the telephone return 41 of a predetermined terminal station, central office, central office, general office, etc., and its telephone line 6. , a plurality of slave units are connected to locations B and E. The handset at ground C receives the dial type telephone 42 and the dial pulse output when dialing the telephone 42, and transmits the corresponding DTMF.
It is composed of an adapter 43 that outputs a signal. E
The handset on the ground is composed of a button 44 that outputs a DTMF signal. On the other hand, the handset installed in a land includes a telephone 47, a dedicated terminal 45 connected thereto for carrying out the data communication of the present invention, and a printer 46 (necessary) that prints information as characters on paper and outputs it. (included according to the requirements) and more.

FIG. 4 shows a block diagram of the terminal 45.

51 is a line interface, which closes the telephone line;
A closing part that opens, a calling signal detecting part that detects an incoming calling signal, a polarity detecting part that detects the polarity of the direct current loop of the telephone line, a CPC detecting part that detects on-hook of the other party, and an attached telephone set. 47, and a voice detection section that detects the presence or absence of a voice signal on the telephone line 6. Reference numeral 52 denotes a transmitting/receiving device that transmits and receives DTMF signals, and as in the case described above, when it is integrated with the attached telephone 47, it can also be used as the original transmitting/receiving device of the telephone 47. can. 53 is a human power device such as a keyboard, and 54 is an LE, for example.
This is a display device consisting of a D, LCD, CRT, etc. 55 is a memory such as a RAM for storing data to be communicated, and 56 is a CPU such as a microprocessor as a control device. Reference numeral 57 represents an interface for the printer 46, and reference numeral 58 represents an interface for an external memory 59 provided as required. As the external memory 59, for example, a tape recorder, a magnetic disk recording/reproducing device, a solid state memory, etc. are used.

Data communication is between the base units at locations A and B (in this case, one base unit can be considered a slave unit for the other base unit)
, is performed between Mta on location A or location B and the slave unit on location C, location B, or location E. The former case is similar to conventional modem-modem communication (the modem 23 is necessary in this case, but unnecessary in the following cases), so its explanation will be omitted.

The present invention relates to the latter case, and particularly relates to the case where the child device calls the parent device, and this will be described below.

When a child device calls a parent device, the operation is performed according to the flowchart shown in FIG. 9, for example.

That is, first, it is determined whether or not the handset is a dedicated terminal 45, and if it is not the terminal 45 (if the handset is a general-purpose dial telephone 42 or a button phone 44), the telephone is manually operated. The selected number (telephone numbers of five machines) is called.

The user of the slave device determines whether the parent device (other party) has responded or not based on whether any message is sent from the parent device. This message can include the name, telephone number, etc. of the base unit. Waits for a specified time when the base unit does not respond.

When a predetermined period of time has elapsed, the calling operation is terminated, and the call is made again if necessary. Of course, if the call is busy, the caller will hang up the call without waiting for a predetermined time, and then call again after a while. When the base unit responds, the user operates the keys on the phone to send out the specified data.
DTM consisting of F (F signal and LF (: symbol) as shown in the table.
F signal is sent.

Table 1 When a master unit responds to a call from a slave unit, it sends messages such as input operation guidance to the slave unit as necessary. The handset inputs predetermined data according to the message.

The CPU 35 of the main unit constantly detects whether there is an abnormality in the communication line via the interface 31, and if an abnormality is detected, it outputs a control signal to the recording/reproducing device 24 and sends a predetermined 5 notifications to the slave unit ( message), opens the telephone line, and terminates the incoming call operation. For example, when an abnormality is detected during data reception, a signal is output from the CPtJ 35 to the computer 1, all data received at that time is invalidated, and a message to that effect is sent from the recording/reproducing device 24.

If there is no abnormality in the communication line, the base unit monitors whether the data transmission operation has been completed. When data transmission is completed, the user transmits a predetermined end code signal that is predetermined and registered on the base unit side, and if there is no correction, the operation is terminated there.

If there is a correction (correction), the operation is ended after the correction operation is made.

Next, in the case of a dedicated terminal 45, the operation is started by first specifying the telephone number (selected number) of the base unit to be called, but this start can be performed manually or automatically. In the case of manual operation, the user operates a predetermined key on the input device 53. In the case of automatic operation, the operation is started, for example, when a timer built into the CPU 56 measures a predetermined time or when a predetermined alarm is detected.

pAl! &'s telephone number is stored in advance in the memory 55 of the terminal 45, and the CPU 56 searches for a predetermined number from among the stored numbers and causes the transmitting/receiving device 52 to output it. The transmitting/receiving device 52 transmits the DT corresponding to the designated number.
Transmits MF signal. This signal is the interface 51
is sent to the telephone line 6 via the telephone line 6. Of course, the transmitting/receiving device 5
A dial pulse generator is also attached to 2, and the calling operation (
Only the data sending operation (instead of the data sending operation) can be performed by a pulse train. In this way, there is no need to make the telephone line 6 a so-called bush line, and costs can be reduced.

If the calling operation is performed automatically, the designation of the number to be called is done according to the program of the CP 056.

When manually making a call, the keys of the input device 53 or the keys of the attached telephone 47 are operated. When this key is pressed repeatedly, the DT of the number specified by that operation
The MF signal is output from the transmitting/receiving device 52 (or the transmitting/receiving device of the telephone 47). Therefore, a calling operation can be performed at any time even to a base unit that is not stored in the memory 55. Once the telephone number is manually operated, it is automatically stored in the memory 55, and automatic calls can be made from the next time onwards.

When the calling operation is started, the CPU 56 starts a built-in timer. Then, the polarity detection section of the interface 51 detects the response of the base unit.

When the base unit does not respond (the polarity of the telephone line 6 is not reversed), it is determined whether one call is in progress. When the call is not in progress, it is determined whether the timer has counted a predetermined period of time (it may be possible to count a ringback tone, etc.) (whether or not the time has expired). When the time has expired, the calling operation is terminated, and when the time has not yet expired, the timer is incremented (the timekeeping operation continues).

If the base unit is on a call, it is determined whether redial is specified, and if there is no specification, the call operation is terminated,
It will be dialed when specified.

When the base unit responds, automatic/manual data transmission is then determined. When a manual specification is being made using the input device 53, the user operates the keys on the input device 53 to input the terminal identification signal (for example, the telephone number of the telephone 47 to which the terminal is connected), and also input the order. Enter data related to the product. At this time, for example, the identification signal of the terminal 45 may be automatically transmitted. When the automatic data transfer mode is set, not only the identification signal but also the data signal stored in the memory 55 is automatically read out by the CPU 56 and sent to the transmitting/receiving device 5.
2, the D T MF signal is sent to the interface 51.
, is sent to the base unit via the telephone line 6.

Next, it is determined whether or not the data transmission has been completed (whether or not a termination signal previously stored in the memory 55 has been sent), and if it has not been completed, it is further determined whether or not there is an abnormality in the communication line. When there is no abnormality, data transmission continues, and when an abnormality is detected, the CPU 35 of the base unit issues a predetermined warning to the slave unit (or the CPU 56 of the terminal unit 45). This warning is displayed on the display device 54. Printer 46 or memory 5
recorded and displayed on at least one of 9. Alternatively, it may be output to the telephone 47 as an audio signal.

Telephone line 6 is opened after this notification. After that, if redial is specified, further redialing is performed.

When the data transmission is finished, the CPU 56
Detects the presence or absence of a response from the device, and ends the operation if there is no response. When there is a response from the base unit, it is received and
Display 1 on the display device [54, printer 46 or memory 59]. Further, the telephone line 6 is opened, and after processing for completing the transmission and reception of data is performed, the operation is terminated.

The IA device is connected to the Bush line (of course, it is possible to connect to the dial line by adding a dial pulse generator for making a call to the sending/receiving device 33), and the slave device is also preferably connected to the Bush line. be done. In this case, both the calling operation and the data sending operation are performed using the DTMF signal. General-purpose telephone 4 with a handset connected to a dial line
2, the calling equal signal to machine m is a dial pulse, but the data signal sent after that is sent to the adapter 43.
A DTMF signal is generated by manually switching the switch. When the dedicated terminal 45 is connected to the dial line, the CPU 56 controls the transmitting/receiving device 52 to send out a calling signal using dial pulses, and then automatically switches the subsequent data signals to DTMF signals. (
Figure 10).

When the parent device is called from the slave device, it is also possible to have it operate according to the flowchart shown in FIG. In other words, in this case, the terminal @45 sends the phone number of the base unit, and the base unit (
When the host (host) responds to this, it sends out only an identification (ID) signal and temporarily releases the telephone line. After the telephone line is once opened, the base unit then makes a call to the telephone number corresponding to the ID that has just been entered manually.

For this reason, the memory of the computer 1 stores in advance the telephone numbers of a plurality of slave devices corresponding to the ID.

When the terminal device 45 detects a call signal from the base device, it responds to the call signal, and when the base device further sends a predetermined control signal, it automatically transfers the data stored in the memory 55 to the base device. and send it.

When the base unit receives all the data, it opens the telephone line and terminates the operation. Of course, if there is data to be sent from the i device side to the slave device side, this data is stored in the memory 55, and further sent to the printer 46, display device 54,
The data is sent to the memory 59 or the like.

In this way, it is possible not only to prevent erroneous orders due to mischief, etc., but also to make the amount that the handset side has to pay for using the telephone line constant and cheap, regardless of the amount of data sent.

The data sent to the telephone line 6 is configured as shown in FIG. 7, for example, and is stored in advance in the memory 55 by operating the input device 53. That is, a data number (for example, a product number) and a corresponding number (quantity) are stored. A general-purpose phone has only the 12 types of keys shown in Table 1, but the dedicated terminal 45 has keys A, B, C, and D added to it, as shown in Table 2, for example.
There can be 16 types of keys.

Table 2 Of course, 12 types of keys can be used in the terminal 45, but in this case, for example, characters, symbols, etc. are expressed using decimal numbers.

In the case of 16 types of keys, even more characters can be represented by hexadecimal numbers.

For example, according to ASCII code (hexadecimal), Figure 8 (a
), the operation pattern of key 4 and key 1 (4
1) is "A", operation pattern of key 5 and key A (5A)
represent "Z" respectively. The operation pattern (91
) is "A", the operation pattern (9th car (F)) is "So", the operation pattern (D6) in the same figure (C) is "Yo", the operation (
# (E) and C) each represent "fu". Note that the characters may be separated by a space longer than a predetermined time, or by a predetermined keystroke such as ``Next'' or ``#''. In this way, by expressing alphabets, characters, etc. using two consecutive key operation patterns, more detailed data can be input. For example, in addition to product numbers, model numbers, etc.
It is also possible to specify the color, size, delivery date, etc. of the product.

The data previously stored in the memory 55 by operating the keys of the input device 53 can be displayed on the display device 54 by operating a predetermined key of the input device 1i53, and can be confirmed before being sent. When sending out the confirmed data, the process can be performed as shown in the flowchart shown in FIG. 12, for example. First, reset the data number to O, determine whether there is no number (data) corresponding to the data number (zero or not), and when it is zero, the data ends (the number is the maximum value). Unless otherwise, data number I is incremented by one.

When the number (data) of data number I is not zero, the number is sent as data and is printed by the printer 4G as necessary. When the data sending operation is completed, the data number I is incremented by one. In this way, when the number is zero, that data can be skipped and not sent, making it possible to send data efficiently in a short time.

The CPU 35 of the controller 21 reads and decodes the data input via the telephone line 6, and outputs the data to the recording/reproducing device 24.
The corresponding voice number 48 is sent out from the voice synthesis IC constituting the voice synthesis IC. This allows the user on the handset side to display numbers (or symbols).
You can check the sent data by inputting it as . This audio signal sent from the base unit to the slave unit to confirm incoming data is stored in a tape recorder constituting the memory 59 of the slave unit. For this reason, for example, if a confirmation audio signal is generated every time data arrives, the CPU 56 on the handset side determines whether data confirmation is specified when data transmission is started, as shown in FIG. When data confirmation is designated from the input device 53, the recording operation of the memory 59 is started at the same time as data transmission is started. As a result, a return (audio signal for confirmation) from the base device side is automatically recorded in the memory 59. When the data sending operation is completed, the recording operation is also stopped. Furthermore, when the confirmation audio signal is issued after the end of data transmission, as shown in FIG. 14, the recording operation is started at the same time as the data transmission is completed, and the recording operation is stopped at the same time as the end of the confirmation audio signal.

With this configuration, the user of the handset side can reproduce the audio signal recorded in the memory 59 at any time and check the transmitted data.

If you listen to the audio signal from the base unit (receiving side) and discover an incorrect input, you can correct (correct) the data that was once sent. Therefore, when a predetermined code is sent from the input device 53, the data of the withdrawal is invalidated. When the base unit detects this code, it outputs an audio signal indicating that the previous data is invalid, and prompts the user to input the correct data again. In response to this voice signal, the user re-enters the correct data. Previous data may be invalidated one by one, or all data may be invalidated. Such processing is performed, for example, according to a flowchart as shown in FIG.

The sent data can also be confirmed according to the flowchart shown in FIG. That is, the CPU 56 determines whether it is necessary to take a copy of the transmission at the same time as the start of data transmission or at the end of data transmission. When the input device 53 specifies that the input device 53 should send (i) record, the interface 51 detects a reversal (or re-reversal) of the polarity of the DC loop of the telephone line 6.

Alternatively, when the key corresponding to the data communication start button is operated, the CPU 56 outputs a control signal to the printer 46 via the interface 57, and prints the transmitted data (stored in the memory 55) as characters on the printer 46. let In this case, if the transmission date, 1 hour, and the other party's address (@phone number of the base unit) are also specified, these are also printed at the same time (of course, the display device 54 may be configured to display such information). ).

In this way, there is no need to use the telephone line for a long time to confirm the transmitted data.

A polarity detection unit is provided in the interface 51 to detect that the base unit has responded when the dedicated terminal @45 makes a call, but in PBX etc., the polarity is reversed even if the called party responds. It may not. Therefore, it is preferable that the interface 51 be provided with a means for detecting the response of the called party based on the presence or absence of a ringback tone, so that it can be used even between extension telephones. Further, the input device 53 may be provided with a key corresponding to a data sending switch that is manually operated when sending data.

The basic operations of the base unit when a call is received from the slave unit are summarized as shown in FIG. telephone line 6
When a calling signal arrives, the CPU 35 first determines whether preparations are made for data reception. For this reason, the CPU 35 checks the data etc. supplied from the computer 1 via the interface 32, and does not respond to the call signal if preparations are not completed. Therefore, for example, if the computer 1 is not connected to the interface 32, or if the computer 1 is not equipped with a memory such as a floppy disk for storing data sent from the slave unit, the slave unit may be inadvertently connected. This prevents

When a calling signal arrives in a state where reception preparations have been completed, the calling signal detecting section of the interface 31 detects this. When a call signal is detected, the CPU 35 determines whether or not audio signal recording has been specified from the input device 3 of the computer 1, and if the specification has been made, it issues a control signal to the recording/reproducing device 24, and The audio signal from the device and, if necessary, the audio signal sent from the parent device to the child device are recorded. This allows the master device to later check the data (order) input from the slave device.

Next, when a predetermined code signal indicating that the handset is a dedicated terminal 45 is sent, this is detected, the data stored in the memory 55 of the handset is sent, and the input processing is performed. Perform protection against incorrect input.

If the handset is not a dedicated terminal 45 and message sending is not specified, input processing of data sent from the handset, protection against erroneous input, etc. are performed.

If message sending is specified, the CPU 35
issues a control signal to the recording/reproducing device 24, causing it to issue a response message, guidance for data input, announcement of whether the input data is appropriate or not, etc. Since the currently connected handset is not a dedicated terminal 45, 1.For the convenience of manual input, a Q & A (response) method is used in which a predetermined input is made every time an announcement is made from the base unit. (Of course, even if the dedicated terminal 45 is used, the Q&A method may be used in the same manner when manual input is performed).

If you need to respond to input data, C
The PU 35 reads the data received by the transmitting/receiving device 33, which is input as a DTM F signal, and outputs an audio signal corresponding to the data (for example, if the input data is a product number,
The product number (product name) is sent from the recording/reproducing device 24 to the slave unit. If the input data is not correct, a message to that effect (for example, a message urging re-input, which is different from the case where the data is correct) is sent. These confirmation audio signals may be sent each time one piece of data is input, or may be sent all at once after all data have been input. The latter method can shorten the time that the telephone line is occupied.

After confirmation, if a code for a predetermined mode such as modification 5 addition, cancellation, etc. is input, that processing is performed.

Furthermore, it is determined whether keyboard input is specified. This designation may be input from input device 3, but 9
For example, it may be configured to work in conjunction with the attached telephone 22 to automatically enable keyboard input when the telephone is off-hook. With this configuration, the user of the base unit who is accustomed to operations can directly receive orders from the user of the slave unit via the telephone 22 using voice signals (voices).
You can input the data (order) of the handset by operating the keyboard (input device 3) on the spot (new data input is not required, corrections etc. are also possible). When a calling signal arrives from a dedicated terminal 45, for example, when the telephone 22 rings twice, it responds, and immediately after that, an automatic data transfer mode code signal is sent, the CPU 35 will automatically open the telephone line when all data has been transferred. On the other hand, when the bell sound temporarily stops in response to the calling signal from the handset) and the code signal for manual transfer mode is sent (when the code signal for automatic transfer mode is not transferred), CPU3
5 further causes the bell of the telephone 22 to ring, for example, three or more times. Alternatively, a bell sound different from the normal bell sound (for example, a bell sound with a different period, pitch, tone color, etc.) is sounded. As a result, the user on the base unit side can use a general-purpose telephone 42.44
or a dedicated terminal 45 that requires someone to answer the telephone 22. In other words, the user on the base unit only needs to answer the telephone 22 when the bell rings three or more times. When the user of the base unit answers the telephone 22, data can be automatically input from the input device 3. If the handset is a dedicated terminal 45 and an identification signal identifying the handset is input immediately after receiving the call,
Computer 1 is a slave device (customer) that corresponds to the identification signal.
The related data is retrieved from the built-in memory and displayed on the display device 4. Therefore, if information such as the name and telephone number of the slave unit is displayed on the display @4, the user of the base unit inputs only the order data.

When nothing is displayed on the display device 4, the user of the slave unit is provided with data specifying the slave unit, and the user of the base unit manually inputs the data from the input device 3.

When manually inputting information, pre-stored information about the slave device is displayed on the display device 4. From then on, input the order data in the same way as in the case described above. In addition to the amount of information on the handset side, payment status, etc., age, date of birth, II! By remembering your work, hobbies, family, etc., you can have more intimate conversations. The data input from the slave device side and the data input from the parent device side are sent using a predetermined code.

It is preferable to make it easy to distinguish by adding a number or the like. In this way, troubles (liability issues) with customers in the event of input errors or the like can be appropriately handled. Also, from this point of view, it is preferable to automatically store the input date, time, etc. in the memory in correspondence with the input data.

When waiting for a calling operation from the handset, the display device 4 may display, for example, the number of incoming calls (number of inputs) from the handset. Data input to the computer 1 is processed each time or all at once, and when the processing is completed, the number of incoming calls up to that point is reset. When processing data all at once, when a key on the input device 3 is operated, when the number of incoming calls reaches a predetermined value, or when the
1 each when the timer of PU35 measures a predetermined time.
- Can be Riga. If an incoming call is received while the computer 1 is executing a predetermined process, the process is temporarily interrupted and priority is given to the incoming call operation. Therefore, the handset is not used more than necessary.

FIG. 18 shows a more detailed flowchart of data input processing and protection processing against erroneous human input. That is, when input grandchild production from the slave device is started, the CPU 35 first starts a built-in timer. If no data is input after the timer starts, the timer value will not reach the specified value (the predetermined value of the city at which time is up), and the operation of incrementing the timer by one (clock operation) will be repeated until time is up. When the timer value reaches the specified value, a message (notification) urging input is output from the recording/reproducing device 24. If no input is made and the timer expires, a closing message is sent requesting a call again, and then the telephone line is released. When the time limit is reached, the data entered at the time of the incoming call will be automatically invalidated.

When data is input, it is determined whether the data is appropriate. If it is not appropriate, a message to that effect is sent to the handset. When the number of incorrect data inputs is less than a predetermined specified value, the timer is restarted. When the number of inappropriate data inputs becomes equal to the specified value, the timer is restarted if input protection is not specified, but if the input layer is specified, the timer is restarted. A predetermined closing message is sent, and the telephone line is released. In this way, inputs caused by mischief or the like are prevented. The input data in this case is automatically invalidated.

If the input data is correct, the data is stored (registered) in the memory of the computer 1.

This operation is repeated until the last data is input.

On the other hand, data correction is performed as shown in FIG.

That is, the CPU 35 performs normal processing when a code for a predetermined mode is not input, but when a code for correction, addition, cancellation, etc. is input, the CPU 35 performs the corresponding process. Even though a predetermined code has been entered manually, if it is not modified, added, or canceled, it is considered an error.

To enable such correction, the CPU 56 of the terminal 45 adds a different code signal to each call operation and sends the data. This code (No.
Assuming that orders were placed (data sent) four times in the 20th month of March, the date and order order of that day are made to correspond to the data input at that time. Therefore, on March 240 thereafter.

When you want to correct the quantity of product number 5 ordered from 12 pieces to 6 pieces in the 4th data sending operation on March 20th, specify the order of 84 cm on March 20th and the 4th time.
Enter the quantity of product number 5 as 6. Then, the computer 1 processes the data inputted on March 24th as the data inputted by the fourth operation on March 20th in accordance with the code. As a result, the quantity of product number 5 is revised to 6.

In such data communication devices, in order to prevent mischief by a third party, it is common to define an identification (ID) signal corresponding to each slave device. However, if this identification signal is known to a third party, it will be difficult to prevent mischief unless it is changed, but changing the identification signal requires relatively troublesome changes on the base unit side. Must be. Therefore, in the present invention, the user
3 to freely set, change, and store a code as a data transmission end signal in the memory 55. When this code is set or changed, the CPU 56 automatically makes a call to the base unit and stores it in the memory of the computer 1. After the computer 1 receives the data, if a code as a data transmission end signal corresponding to the identification signal is not transmitted,
Invalidates the entered data. Also at this time, CPU3
5 controls the recording/reproducing device 24 to send out a predetermined closing message, but the content does not mean that the code is inappropriate; for example, it may occur due to an abnormality in the communication line or time up 1: te. The content is considered to be the same as that of the original. This prevents third parties from knowing that the code is incorrect. Therefore, the user of the slave device can prevent mischief by changing this code as necessary.

The data communication device according to the present invention is as shown in No. 2I71.
The basic configuration is one computer 1 and a plurality of slave devices connected to it. When the number of slave units increases, one base unit that controls multiple m units may be increased in parallel as shown in Figure 5, or multiple base units may be added in parallel as shown in Figure 6. It is also possible to perform all operations sequentially and serially using one master device. Note that the slave units are omitted in these figures.

Furthermore, in the above explanation, the number of telephone lines controlled by the base unit is assumed to be one, but if multiple telephone lines are managed, the multiple telephone numbers may be stored in the memory 55 of the slave unit. can. And one for example? ! When a phone number is busy, it can be configured to automatically redial another phone number. In this way, there is no need for the base unit to receive services from the telephone company as a representative.

〔effect〕

As described above, the present invention provides a relatively small computer that processes input data according to a predetermined program.
A data communication device that transmits data via a telephone line includes an input device for inputting at least numbers as data, a memory for storing the numbers input by the input device, and a DTM F signal for transmitting the numbers stored in the memory. The device is equipped with a transmitting device that transmits a message based on a number, and a means for determining the number stored in the memory, and is configured to transmit a number when it is not zero and not to transmit it when it is zero, making it possible to transmit data in a short period of time. , it becomes possible to reduce telephone charges.

[Brief explanation of drawings]

1, 2, 5 and 6 are network diagrams of the data communication device of the present invention, FIG. 3 is a block diagram of its controller, FIG. 4 is a block diagram of its terminal, and FIG. 7 is an explanatory diagram of stored data, FIG. 8 is an explanatory diagram of a key outline pattern, FIGS. 9 to 19 are flowcharts thereof, FIG. 20 is a network diagram of a conventional data communication device, and FIG.
The first is a block diagram of a conventional modem 'Ii packing machine. 1... Computer 2... Main body 3... Input device 4... Display device 5... Modem telephone 6... Telephone line 11... Modem 13... NCU section 15... Auto Dial device 21...controller 23...modem 24...recording/reproducing device 31.32...interface 33...transmission/reception device 34...switch 35...CPU 41...telephone office 43 ... Adapter 45 ... Terminal 46 ... Printer 51 ... Interface 52 ... Transmitting and receiving device 53 ... Input device 54 ... Display device 55 ... Memory 56 ... CPU 57 .58...Interface 59...External memory 61...Printer or higher

Claims (1)

[Scope of Claims] An input device for inputting at least numbers as the data in a data communication device that sends input data via a telephone line to a relatively small computer that processes the input data according to a predetermined program. and,
A device comprising: a memory for storing the numbers inputted by the input device; a transmitting device for transmitting the numbers stored in the memory using a DTMF signal; and means for determining the numbers stored in the memory. A data communication device characterized by transmitting a number when it is not zero and not transmitting it when it is zero.