JP3426012B2 - Communication terminal device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal device,
More specifically, the present invention can be applied to a facsimile data terminal device that transmits and receives facsimile signals and data between other facsimiles and data modems connected to a public line, and performs voice communication. The present invention relates to a communication terminal device that can realize facsimile data communication using a public line at low cost without providing a modem board, and that can change modems and facsimiles and add functions with good consistency and easily. .

[0002]

2. Description of the Related Art Conventionally, there is a digital modem reported in, for example, Japanese Unexamined Patent Publication No. 4-109736, in which a line control device connected to a digital network is equipped with a modem and voice codec processing. A digital modem for performing, a modulating means for modulating a digital signal, and a first frequency converting the signal modulated by the modulating means.
Conversion means, encoding means for encoding the signal converted by the first conversion means, decoding means for decoding the signal encoded by the encoding means, and decoding by the decoding means By including the second converting means for frequency-converting the converted signal and the demodulating means for demodulating the signal converted by the second converting means, all of the modem modulation / demodulation and voice codec processing are performed. It has an advantage that it can be digitally processed, has a simple structure, and can obtain a digital modem in which generation of a quantization error is suppressed.

Further, for example, a conventional digital modem reported in Japanese Patent Laid-Open No. 4-109737 is a digital modem which is provided in a line control device connected to a digital network and which performs a voice codec process and a modem. A plurality of short-circuit means for short-circuiting the credit and reception paths, respectively,
By configuring so that the failure location of the transmission processing system can be specified according to the path short-circuited by each short-circuit means, all the modem demodulation and voice codec processing can be digitally processed, and the transmission processing system It is possible to easily specify the failure point, and to have a simple configuration, suppress the occurrence of quantization error, and improve the convenience of the digital modem.

By the way, the conventional communication terminal device realizes facsimile data communication using a public line by adding a modem chip or a board incorporating the modem chip to the computer.

[0005]

However, in the above-mentioned conventional communication terminal device, the computer realizes the facsimile data communication using the public line by adding the modem chip or the modem board incorporating the modem chip to the computer. Therefore, it is necessary to add a specific modem chip or a modem board incorporating the modem chip to the computer, and there is a problem that the cost increases accordingly. Moreover, since the function of the conventional communication terminal device depends on the performance of the modem chip attached to the board and the software controlling the modem chip, its function change, software change, and compatibility with existing application software. There was a problem in terms of etc.

Therefore, the present invention can realize facsimile data communication at a low cost by using a public line without providing a specific modem chip and a modem board having the modem chip, and the modification and function of the modem and the facsimile. It is an object of the present invention to provide a facsimile data terminal device that can be added easily and with good consistency.

[0007]

The invention according to claim 1 is
Faxing with other terminal devices connected to the public line
Multi-function for transmitting / receiving signals, data transmission / reception, and voice communication
A computer that stores telephone software and modem function software,
By connecting the computer and the public line,
Based on the multifunction telephone software and the modem function software
An interface device whose operation is controlled by
Interface connected to the interface device and the interface
Converts analog signals from base equipment to digital signals
And an A / D conversion device for inputting to the computer, and the calculation
Convert the digital signal from the machine into an analog signal
A D / A conversion device for outputting to the interface device,
The interface device and the A / D conversion device
And the D / A conversion device is the interface device.
And the line connection between the public line and the other terminal device including the telephone
After the connection is formed, the signal from the public line is sent to the computer.
Sequentially capture and output the signal from the computer for a while
It is characterized in that it operates as follows.

The invention according to claim 2 is connected to a public line.
Of facsimile signals and data with other terminal devices
Multi-functional telephone software for sending and receiving and voice communication
A computer for storing a number of modem function software, and the computer
And the public line are connected to each other, and the multi-function is performed by the computer.
Operation control based on telephone software and modem function software
Interface device and the interface
Receiver connected to the mobile device, and the interface device
The analog signal from the
The A / D converter input to the computer and the data from the computer
The digital signal is converted into an analog signal to convert the interface signal.
A D / A conversion device for outputting to a base device,
Interface device, A / D converter, and D
/ A converter is the interface device and public line
And a line connection is established with the other terminal device including the telephone.
After that, the signals from the public line are sequentially taken into the computer.
And to output the signal from the computer for a while.
After the computer has made a line connection with the other side,
Analyze the input signal that is input to the computer and check the results of this analysis.
As a result, if the input signal is a voice signal,
Switch to the handset attached to the interface device
As a result of this analysis, the input signal is a voice signal.
If there is no data signal, the plurality of modem function software
Which modem function software to operate
The feature is that it is automatically judged from the input signal .

The invention according to claim 3 is the above-mentioned claim 2.
In the above invention, the computer has a line connection with the other party.
Later, the communication with the other party will be data communication or voice communication.
If you decide whether to do it, if the communication with the other side is data communication
If determined, the modulation format and protocol of various data communication
Conversion of transmitted data into transmitted signals based on
It is characterized by.

The invention according to claim 4 is the same as claim 1 or 2.
In the invention of claim 2, the computer is the
Function When the answering machine mode of the telephone software is set
And between the interface device and the public line
After the line connection is made, the input signal is
If the input signal is a voice signal as a result of analysis
Contains the pre-recorded response message data
Data to the talker via the D / A conversion device,
A message signal from a person through the A / D converter
It is characterized by recording in a file .

[0011]

[0012]

[0013]

According to the invention of claim 1 or 2,
In addition, the computer may have a modem function, a protocol and error correction standardized for a general switched telephone network as a modem function, or a scanner and a printer may be added. Claim 1 or claim 2
In the invention, the control signal from the computer controlling the interface device may be configured to be controlled via a connection cable other than the A / D and D / A conversion devices, such as RS232C, You may comprise so that it may be controlled via an A / D and a D / A converter.

[0015]

In the present invention, all the functions required for communication are realized as a program (software), and the CP of the conventional computer is used.
By fully utilizing the U power, it is possible to realize a versatile communication terminal device. Therefore, the change of the modem and the facsimile and the addition of the function can be easily performed only by rewriting the program, and the need for the modem chip or the modem board incorporating the modem chip can be eliminated, so that the interface device can be used. A facsimile data terminal device can be provided only by providing software necessary for communication. Moreover, in the present invention, since the modem function part is realized by software, its version upgrade or 9600 bps to 14.4 kbp
It can support speed changes to s, as well as modulation schemes prepared for various common telephone networks. Furthermore,
Various application software on a computer can be used, and a versatile facsimile data terminal device can be realized. Hereinafter, the operation of the present invention will be described for each claim.

According to the first aspect of the invention, a particular modem channel is used.
Without a board or a board containing a modem chip.
Computer CPU, multifunctional telephone software and modem software
A fax machine connected to another public line by
With a data modem or a device having the structure according to claim 1
Facsimile signals, data transmission / reception, voice communication between
To configure. For this reason, certain modem chips and
Functions required for communication without software
Because it can be realized, a versatile communication terminal
Can be provided.

According to the second aspect of the invention, a specific modem channel is used.
Without a board or a board containing a modem chip.
Computer CPU, multifunctional telephone software and modem software
A fax machine connected to another public line by
A data modem, or a configuration according to claim 1 or 2 above
Facsimile signal, data transmission / reception, voice communication with the device
Configure to communicate. Because of this, a particular modem
Software required for communication without the need for a laptop or board
Since it can be implemented with software, it is versatile and versatile.
A communication terminal can be provided. Also, the interface
Between the device and the other party's terminal device including the public line and telephone
After the line connection is formed, the signal from the public line is calculated by the computer.
, And output the signal from the computer for a while.
Interface device, A / D conversion device and D / A
The conversion device is configured to operate. Because of this, certain
Requires a modem chip or a modem board containing a modem chip
The functions required for communication are realized by software without
Sequentially fetch signals from the public line to the computer, and from the computer
The operation can be controlled to output the signal of
Therefore, determine the modulation method prepared for each public line.
Communication terminal that can support
Can be provided. Also, the line connection with the other party is
After being generated, the signal input from the public line is divided by the computer.
As a result of this analysis, if the input signal is a voice signal,
Switch to the handset attached to the interface device
Configure to make a call. Therefore, from the public line
Analyze the signal with a computer and make a call when it is a voice signal
Since it is possible to judge whether the other party is a data terminal or a person,
It is possible to reliably switch between data communication and telephone call. Well
Also, after connecting the computer to the other side, connect it to the computer.
The input signal is analyzed and the result of this analysis is not a voice signal.
Which mode of modem function to use when it is a data signal.
Configured to automatically judge whether to make it from the input signal
To do. For this reason, standardized modems and
It has a protocol and error correction function and is input to the computer.
It is possible to automatically judge the signal
Supports various modulation methods and protocols standardized for wire
To provide versatile communication terminals
be able to.

In a third aspect of the invention, the computer is a partner
After the line connection with the other side, the communication with the other side
The communication with the other party is disabled.
If it is determined to be data communication, modulation of various data communication
Transmission data is transmitted based on the format and protocol format.
It is configured to be converted into a No. Therefore, data communication
Judge whether to make a call or not.
Data into a transmission signal according to the communication method of the other party
It is possible to use various modulation methods standardized for public lines.
Can support expressions, protocols, and is versatile
It is possible to provide a different communication terminal.

In a fourth aspect of the invention, the computer has multiple functions.
When the answering machine mode of the telephone software is set,
And the line connection between the interface device and the public line
After being generated, the signal input from the public line is divided by the computer.
As a result of this analysis, when the input signal is a voice signal,
D / the fixed pre-recorded response message data
It is transmitted to the talker via the A conversion device, and the message from the talker is transmitted.
Record a sage signal in a file via an A / D converter
To configure. Therefore, the signal from the public line is
Analyzed with a computer and sent a response message when it was voice
Then record the message from the talker in a file
You can use the answering machine function on your computer.
It can be easily realized only by the configuration of the application software.
It

[0020]

[0021]

[0022]

[0023]

[0024]

[0025]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a communication terminal device according to an embodiment of the present invention. As shown in FIG. 1, the communication terminal device according to the present embodiment includes a computer 1, an interface device 3 that connects the public telephone line 2 and the computer 1, a handset 4 that connects the interface device 3, and an analog from the interface device 3. It is composed of an A / D converter 5 for converting a signal into a digital signal and inputting it to the computer 1, and a D / A converter 6 for converting a digital signal from the computer 1 into an analog signal and outputting it to the interface device 3. And, without providing a specific modem chip or a modem board including a modem chip, mainly by program control of the computer 1, connection with a communication line and data / voice with a terminal device connected to another communication line. It is configured to perform communication of. Here, the scanner 7 and the printer 8 are added to the above configuration, but a configuration in which a peripheral device such as a storage device connected to the computer 1 is further added may be adopted.

The facsimile function of this embodiment will be described in comparison with the conventional facsimile function. First, the conventional facsimile function will be described with reference to the block diagram of the conventional facsimile apparatus shown in FIG. As shown in FIG. 2, in the conventional facsimile apparatus 11, the communication protocol and the modem are controlled by the program of the communication control unit 12, and the scanner 15, the plotter 16, the encoding / decoding unit 17, and the operation are controlled by the program of the system control unit 14. The display unit 18 and the like are controlled. In FIG. 2, 1
Reference numerals 9 and 20 are an NCU (network control unit) and a telephone, respectively.
In this conventional facsimile apparatus, the programs of the communication control unit 12 and the system control unit 14 are written in a ROM, and when changing these operations, the programs must be rewritten to replace the ROM, so the specifications are determined. However, the facsimile has a problem that its function cannot be easily changed. For this reason, for example, when it is said that the transmission speed can support up to 9600 bps, in order to support it up to 14.4 kbps, it is necessary to replace the modem chip and redesign the circuit according to this modem. Actually, there was a problem that the cost had to be increased because the cost had to be changed to another new fax.

On the other hand, the facsimile function of the present embodiment differs from that of FIG. 2 in that the computer 1 in the halftone dot area is used as shown in the block diagram of the facsimile apparatus of the present embodiment in FIG. It is realized as a program (software). Therefore, the change and the addition of the function can be easily performed only by rewriting the program, and the modem chip or the modem board in which the modem chip is incorporated can be dispensed with. A communication terminal can be provided by providing the software of the computer 1 in the dot section. Note that, in FIG. 3, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts, and the computer 1 has a multifunction telephone function unit 21 having a multifunction telephone program, a modem function unit 22 having a modem function program, and a communication protocol. And a communication control unit 23 for controlling the above, a system control unit 24 having a system control program, and an encoding / decoding unit 25.
Reference numeral 6 is an operation display unit connected to the computer 1, and 27 is a storage device connected to the computer 1. And the scanner 7,
The printer 8, the operation display unit 26, and the storage device 27 are controlled by the program of the system control unit 24. In addition, in the present embodiment, since the communication control unit 23 is realized by software, the version upgrade, the speed change from 9600 bps to 14.4 kbps, and the modulation method prepared for various general telephone line networks are used. Can be supported. Moreover, since various application software on the computer 1 can be used, a versatile facsimile data terminal device can be realized.

Further, in the present embodiment, the interface unit 3 which mainly functions as an NCU exchanges various signals with the exchange under the control of the computer 1, and the multifunctional telephone function unit 21 on the computer 1 is operated. By the multifunction telephone software and the modem function software of the modem function unit 22, transmission / reception of a facsimile signal and data to / from a facsimile connected to another public line, a data modem, or a device having the same configuration as the above-mentioned embodiment, Voice communication can be performed.

The modem function of the modem function unit 22 means all the functions of the modem standardized for the general switched telephone network, and the communication control unit 23 also relates to the protocol and the error correction. And encoding / decoding unit 2
Needless to say, it is added to item 5. Next, the configuration of the interface device in the communication terminal device of this embodiment and the control method for incoming and outgoing calls will be described. Figure 4
FIG. 3 is a block diagram showing the configuration of the interface device shown in FIGS. As shown in FIG. 4, the interface device 3 detects a calling signal from the general public line connection terminal 31, the telephone connection terminal 32, and the public line, and performs A / D conversion.
A call detection circuit 33 for inputting to the conversion device 6, a switching device 34, a switching device 35, a switching device control unit 36 for controlling the switching device 34 and the switching device 35, and a control signal from the switching device control unit 36. A drive unit 37 that drives each of the switching devices 34 and 35, and a control signal detection unit 38 that detects a control signal output from the computer 1 via the D / A conversion device 6 and outputs the control signal to the switching device control unit 36. , Amplifier 39
And a terminating circuit 40, a filter 41, and the like.

Next, the incoming call processing when the computer is in the automatic reception mode and the other party is the data terminal device will be described with reference to the flowchart of FIG. First, when there is a call from the exchange (process S ₁ ), the call detection circuit 33 of the interface device 3 notifies the computer 1 of the call via the A / D converter 5 (process S ₂ ). Next, the computer 1 detects this (process S ₃ ) and sends a control signal to the interface device 3 via the D / A converter 5 (process S ₄ ).
This control signal uses, for example, an out-of-voice signal. Next, the interface device 3 detects this control signal by the control signal detection unit 38 (process S ₅ ), inputs it to the switching device control unit 36, and according to this control signal, the switching device control unit 3
The drive unit 37 is controlled by ₆ to switch between the switching devices 34 and 35 (process S ₆ ). Next, the computer 1 sends out a reception signal via the D / A conversion device 6 according to the reception data type from the partner data terminal device (process S ₇ ), and the data communication process is performed (process S ₈ ). . After the communication is completed (process S ₉ ), the control signal is again sent to the interface device 3 via the D / A converter 6 (process S ₁₀ ), and the switching devices 34 and 35 are returned to the initial state (process S _12). ).

Next, a call processing flow at the time of making a call from the computer via the interface device will be described with reference to the flowchart of FIG. First, the computer 1 sends a control signal to the interface device 3 via the D / A converter 6 (process S ₂₁ ), and the interface device 3 detects this control signal by the control signal detector 38 (process S ₂₁ ). ₂₂ ), input to the switching device control unit 36, and according to this control signal, the switching device control unit 36 controls the drive unit 37 to control the switching device 3
4 and 35 are switched (process S ₂₃ ), a closed loop is formed with the exchange and the dial tone from the exchange is A / D.
The information is transmitted to the computer 1 via the conversion device 5. Then, the computer 1 detects the dial tone (process S ₂₄ ), sends a selection signal via the D / A converter 6 (process S ₂₅ ), and transmits it to the exchange through the interface device 3. Then, after sending the selection signal, the ring back tone returned from the exchange is transmitted to the computer 1 via the A / D converter 5. At this time, if a busy tone is returned from the exchange instead of the ringing tone (process S ₂₆ ,
S ₂₇₎ sends a control signal from the D / A converter 6 (process S _31), switches the switching device 34 and 35, to open the closed loop (processing S _32). Then, the computer 1 sets the timer (process S ₂₆ ) after detecting the ringing tone (process S ₂₆ ).
₂₈ ), if the ringing tone is monitored for a certain period of time and continues for a certain period of time (processes S ₂₉ , S ₃₃ , S ₃₄ ), a control signal is sent from the D / A conversion device 6 (process S ₃₁ ) and the switching device 34 is used. , 35 are switched (process S ₃₂ ), and the closed loop is opened.

Since the operator intervenes in the case of the manual operation, the interface device 3 is operated by the operator when it is judged that the other party does not respond.
A command is transmitted to the D / A converter 6 to open the closed loop. Further, the control signal from the computer 1 for controlling the interface device 3 may be controlled via a connection cable such as RS232C other than the A / D and D / A devices. Specifically, the procedure is as follows. Most personal computers and computers are equipped with a serial interface (RS232C) as an input / output board for connecting peripheral devices. The RS232C is a standardized serial interface and is standardized. The RS232C interface standard defines electrical specifications, types of signal lines, mechanical characteristics (connector specifications), and the like. Therefore,
This standardized interface is provided in the interface device 3 of this embodiment, and the transfer of control signals between the computer 1 and the interface device 3 is controlled via the RS232C.

Next, after a line connection is established between the interface and the other terminal including the public line and the telephone,
Even if the interface device 3, the A / D conversion device 5, and the D / A conversion device 6 are configured to operate so that the signals from the public line are sequentially taken into the computer 1 and the signals from the computer 1 are temporarily output. Good. Specifically, the procedure is as follows. As shown in FIG. 4, the computer 1 transmits a control signal to the interface device 3 via the A / D conversion device 5, and the interface device 3 switches the switching device 34 to form a closed loop. Communication is enabled, the switching device 35 is switched, and the signal from the public line is A
A signal path to be taken into the computer 1 via the / D converter 5 is formed. Thereafter, the computer 1 sequentially takes in signals from the public line via the interface device 3 and the A / D conversion device 5, and outputs the signals from the computer 1 temporarily via the D / A conversion device 6 and the interface device 3. To do. As a result, communication with the partner terminal is performed.

Next, the processing flow of the communication control unit 23 of the computer 1 will be described with reference to the flowcharts of FIGS. As shown in FIG. 7, after the line connection with the other side is established, the signal input from the public line through the A / D converter 5 is analyzed by a computer, and as a result, the input signal is a voice signal (non-data signal). In the case of () (processes S _{41 to} S ₄₃ ), the voice call is performed by switching to the handset 4 attached to the interface device 3 (process S ₄₄ ). At this time, the caller (operator) is notified by a bell and display that the communication is voice communication.
On the other hand, when the input signal is a non-voice signal (process S ₄₃ ), the data mode is determined (process S ₄₅ ), and the data communication process including the modulation process, the protocol process, and the A / D, D / A conversion process is performed. Perform (process _S46 ). In addition, in S ₄₅ and S ₄₆ of FIG. 7, the signal input to the computer after the line connection with the other party is
The operation flow of the modem function in the case of a data signal is shown, and in this case, demodulation processing is performed according to the type of received data. In data communication processing, modulation / demodulation processing,
Protocol processing (including HDLC framing and deframing) is performed.

Here, the voice communication and the data signal may be discriminated from each other, for example, by the output value of the filter bank for extracting the frequency used in the data communication. It may be performed by utilizing the fact that it is larger than communication. Alternatively, a technique such as voice recognition may be used. Next, as shown in FIG. 8, when the computer 1 is set to the answering machine mode,
After the line connection between the interface device 3 and the public line is established, the signal input from the public line through the A / D converter 5 is analyzed by the computer 1, and as a result, if the input signal is a voice signal (process S ₅₁ to S _53), the response message data that had been recorded the predetermined pre-transmitted to the talker via a D / a converter 6 (process S _54), the message signal from the talker a / D The data is recorded in the file via the conversion device 5 (process S ₅₅ ). The message at this time is ADPCM,
It is compressed and stored by a voice encoding method such as DPCM, and is also expanded and used. Further, the message of the other party is also encoded and stored by this voice encoding. On the other hand, when the input signal is a non-voice signal (process _S53 )
Determines the data mode (process _S56 ), and performs data communication process including modulation process, protocol process, and A / D, D / A conversion process (process _S57 ).

Note that S ₅₆ and S ₅₇ in FIG. 8 show the operation flow of the modem function when the signal input to the computer after the line connection with the other party is a data signal. In this case, demodulation processing is performed according to the type of received data. In data communication processing, modulation / demodulation processing, protocol processing (including HDLC framing and deframing)
Is done. Further, here, the discrimination between the voice signal and the data signal may be made by, for example, the output value of the filter bank that extracts the frequency used in the data communication. You may go by making use of a big thing. Alternatively, a technique such as voice recognition may be used.

Next, the processing flow of the modem function unit 22 and the communication control unit 23 of the computer 1 will be described with reference to the flowchart of FIG. As shown in FIG. 9, it is determined whether data communication or voice communication is to be performed with the other party after the line is connected to the other party. In the case of data communication, not voice communication (process S ₆₁ ).
Data mode is selected (step _S62 ), and the transmission function converts the transmission data into the transmission signal according to the modulation format and protocol format of various data communications.
And the communication control unit 23 (process S ₆₃ ). On the other hand, in the case of voice communication (process S ₆₁ ), switching processing to the handset 4 is performed to perform voice communication (process S ₆₄ ).

As described above, this embodiment (claim 1 or contract)
In claim 2), a facsimile connected to another public line 2 mainly by the CPU on the computer 1 and multifunction telephone software and modem function software without providing a specific modem chip or a board including a modem chip, Since it is configured to send and receive facsimile signals, data, and voice communication with the data modem or the device with the above configuration, the functions required for communication are realized by software without the need for a specific modem chip or board. Therefore, it is possible to provide a versatile communication terminal.

In this embodiment, since the interface 3 device is configured to be controlled in operation by the control signal from the computer 1, the computer can perform the operation control, so that the modem and the facsimile can be changed and the function can be added. Etc. can be easily performed by changing the software of the computer. In this embodiment, the interface device 3 uses the call signal from the public line through the A / D conversion device 5 and the computer 1
In response to a response command from the computer 1, a closed loop is formed with the public line, and a response signal is transmitted to the public line 2 to start communication. Since the network controller can mainly function according to the standard of the public line such as forming a DC loop, the communication device can be easily provided regardless of the type of computer.

In this embodiment, the interface device 3
By the connection request signal from the computer 1 to the public line,
After forming a closed loop with the exchange, the dial tone from the exchange is transmitted to the computer 1 via the A / D converter 5, and the selection signal issued from the computer 1 is transmitted to the exchange.
Since the call signal from the exchange, which is the response signal, is transmitted to the computer 1 via the A / D converter, the network controller can operate by the operation control from the computer. In the present embodiment in which the call operation can be easily performed by the software configuration of the computer, when the call signal continues for a predetermined time or more, or when it is determined that the other party does not respond by the manual operation,
A circuit disconnection command is transmitted to the interface device 3 through the D / A conversion device 6 or another bus,
Since the interface device 3 is configured to open the closed loop with the exchange when the line is disconnected, the line can be opened under the control of the computer when it is determined that there is no response from the other party. Therefore, it is possible to avoid holding the line unnecessarily.

In this embodiment (claim 1 or claim 2)
After the line connection between the interface device 3 and the other side terminal including the public line and the telephone set is formed, the signals from the public line are sequentially taken into the computer 1, and the signals from the computer 1 are temporarily output. Interface device 3,
Since the A / D conversion device 5 and the D / A conversion device 6 are configured to operate, the functions necessary for communication are realized by software without requiring a specific modem chip or a modem board including the modem chip. Since the signals from the public line can be sequentially fetched into the computer and the operation can be controlled to output the signal from the computer for a while, it is possible to judge and support the modulation method prepared for various public lines, It is possible to provide a versatile communication terminal.

In the present embodiment (claim 2), after the line connection with the other side is formed, the signal input from the public line is analyzed by the computer 1, and as a result of this analysis, when the input signal is a voice signal. Since it is configured to switch to the handset attached to the interface device 3 to make a voice call, the signal from the public line can be analyzed by a computer and the call can be made when the voice signal is received. It is possible to judge whether the person is a person or not and reliably switch between the data communication and the call.

In this embodiment (claim 4), when the computer 1 is set to the answering machine mode of the multifunction telephone software, and after the line connection between the interface device 3 and the public line is formed, The signal input from the line is analyzed by the computer 1, and as a result of this analysis, when the input signal is a voice signal, a predetermined prerecorded response message data is sent to the talker via the D / A converter 6. In order to transmit and record the message signal from the talker into a file via the A / D conversion device 5, the signal from the public line was analyzed by a computer, and in the case of voice, a response message was transmitted. After that, since the message from the sender can be recorded in the file, the answering machine function can be easily realized only by configuring the application software on the computer.

In this embodiment (claim 2), the computer 1 is
After connecting the line with the other party, analyze the signal input to the computer 1, and if the analysis result is a data signal instead of a voice signal, the mode of the modem function to operate automatically is automatically determined from the input signal. Since it is configured to judge, it has a standardized modem for public line, protocol, error correction function, and can automatically judge the signal input to the computer, so standardized for public line. It is possible to support various modulation methods and protocols that have been adopted, and it is possible to provide a versatile communication terminal.

In this embodiment (claim 3), the computer 1 is
After connecting the line to the other party, determine whether the communication with the other party is data communication or voice communication.If it is determined that the communication with the other party is data communication, the modulation format of various data communication and Since it is configured to convert the transmission data to the transmission signal based on the protocol format, it determines whether to perform data communication or call, and converts the transmission data to the transmission signal according to the communication method of the other party during the data communication. Therefore, various modulation methods standardized for the public line,
It is possible to support a protocol and provide a versatile communication terminal.

[0046]

According to the present invention, facsimile data communication can be realized at a low cost by using a public line without providing a specific modem chip and a modem board having the modem chip, and the modem and the facsimile can be changed. Further, there is an effect that the function can be added easily and with good consistency.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a communication terminal device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional facsimile apparatus.

FIG. 3 is a block diagram showing a configuration of a facsimile apparatus according to an exemplary embodiment of the present invention.

FIG. 4 is a block diagram showing the configuration of the interface device shown in FIGS.

FIG. 5 is a flowchart showing an incoming call processing flow when the computer according to the embodiment of the present invention is in the automatic reception mode and the other party is the data terminal device.

FIG. 6 is a flow chart showing a call processing flow at the time of making a call from a computer via the interface device according to the embodiment of the present invention.

FIG. 7 is a flowchart showing a processing flow of a modem function unit of a computer according to an embodiment of the present invention.

FIG. 8 is a flowchart showing a processing flow of a modem function unit of a computer according to an embodiment of the present invention.

FIG. 9 is a flowchart showing a processing flow of a modem function unit and a communication control unit of a computer according to an embodiment of the present invention.

[Explanation of symbols]

1 calculator 2 telephone lines 3 Interface device 4 handset 5 A / D converter 6 D / A converter 7 scanner 8 printers 21 Multifunctional telephone function section 22 Modem function part 23 Communication control unit 24 System control unit 25 Encoding / Decoding Unit 26 Operation display section 27 storage 31 Public line connection terminal 32 Telephone connection terminal 33 Call detection circuit 34, 35 switching device 36 Switching device control unit 37 Drive 38 Control signal detector 39 amplifier 40 termination circuit 41 Filter

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-224343 (JP, A) JP-A-6-30156 (JP, A) JP-A-5-336259 (JP, A) JP-A-5- 347693 (JP, A) JP-A-2-279057 (JP, A) JP-A-3-34659 (JP, A) JP-A-7-183964 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04L 29/10 H04M 11/00

Claims (4)

(57) [Claims] 1. A terminal device connected to a public line
Send and receive facsimile signals, data, and voice communication with
Stores multifunction telephone software and modem function software for
And a computer that connects the computer and the public line.
The multifunctional telephone software and the modem function are calculated by a computer.
Interface device whose operation is controlled based on software
And a handset connected to the interface device,
The analog signal from the interface device is digitized.
A / D conversion device for converting into a digital signal and inputting into the computer
And the digital signal from the computer into an analog signal
D / A conversion for conversion and output to the interface device
A conversion device, the interface device, the A
The D / D conversion device and the D / A conversion device are
Face device, public line, and other terminal device including telephone
Signal from the public line after the line connection with the
Sequentially import to the computer, and the signal from the computer
Communication terminal characterized by being operated to output for a while
apparatus. 2. Between another terminal device connected to the public line
Send and receive facsimile signals, data, and voice communication with
Multi-functional telephone software and multiple modem functional software for
Connect the computer for storing and the computer and the public line
The multifunctional telephone software and the model are operated by the computer.
Interface controlled by software
Device and a handset connected to the interface device
The analog signal from the interface device.
A / D conversion which is converted to a digital signal and input to the computer
Converter and digital signal from the computer
D converted to a signal and output to the interface device
/ A conversion device, and the interface device,
The A / D conversion device and the D / A conversion device are
Other party including interface device, public line and telephone
After the line connection with the terminal device is established,
Signals are sequentially captured by the computer, and from the computer
It operates to output a signal for a while, and the computer
Input signal input to the computer after line connection with
Signal is analyzed, and as a result of this analysis, the input signal is a voice signal.
Is attached to the interface device
As a result of this analysis, I switched to the handset and made a voice call.
When the input signal is a data signal instead of a voice signal
Any of the above-mentioned modem function software
Automatically operate from the input signal
A communication terminal device. 3. After the computer has established a line connection with the other party
The other party to use data communication or voice communication.
It is determined that the communication with the other party is data communication.
If different, modulation formats and protocols for various data communications
Converting the transmitted data into a transmitted signal based on the format
The communication terminal device according to claim 2. 4. The computer is absent from the multifunction telephone software.
When the phone number mode is set and the
A line connection was established between the face device and the public line.
After that, the input signal is analyzed by the computer, and the result of this analysis is analyzed.
As a result, when the input signal is a voice signal, a predetermined pre-recorded
The response message data that has been sent is converted into the D / A conversion device.
Message to the talker via the
Signal to a file via the A / D converter.
And the communication end according to claim 1 or 2.
End device.