JPH09289557A - Modem device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To evade a state wherein reception is disabled because of insufficient memory capacity by reducing the power consumption of a data terminal device and lightening the burden on an operator. SOLUTION: A power supply condition input part 6 inputs conditions at the time of the supply of a data terminal device power source 9 to the data terminal device 2. A power supply opening/closing part 7 turns on and off the data terminal power source 9 according to the conditions inputted from the power supply condition input part 6. A control part 8 controls the power supply opening/closing part 7 according to the conditions Inputted from the power supply condition input part 6 to store a facsimile signal demodulated by a modem part 4 in a receive data storage part 5 when the facsimile signal is received while no electric power is supplied to the data terminal device 2, controls the power supply opening/closing part 7 to supply the electric power to the data terminal device 2, and reads the facsimile signal out of the receive data storage part 5 after the reception of the facsimile signal ends and transfers It to the data terminal device 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modulator / demodulator,
In particular, the present invention relates to a modulation / demodulation device connected to a data terminal device for receiving data such as receiving a facsimile signal.

[0002]

2. Description of the Related Art Conventionally, a modulation / demodulation device of this type has a modulation / demodulation circuit as a main circuit, is connected between a communication line and a data terminal device, and modulates a data signal output from the data terminal device for communication. It is used when the data signal is output to the line, demodulated from the data signal received from the partner terminal device via the communication line, and output to the data terminal device. As the data terminal device, an information processing device such as a personal computer or a facsimile device is used. It should be noted that even if a facsimile signal is received, it is not necessary to print out an image sent by a facsimile signal on a facsimile sheet as in a normal facsimile apparatus, and the image data obtained from the facsimile signal is directly treated as a target of data processing. In this case, an information processing device such as a personal computer is also used as a reception terminal device for facsimile signals.

In many cases, such a data terminal device is usually required to be in a state of being able to receive data 24 hours a day, and it is necessary to keep the data terminal device operating in a waiting state at all times. When receiving an incoming call, you must always turn on the power. However, keeping this data terminal device in a constant operating state consumes a considerable amount of power, which is also problematic from the viewpoint of energy saving.
In order to solve this problem, the following modulator / demodulator has been developed. When using the modulator / demodulator developed from the viewpoint of saving power consumption, the power of the data terminal device is normally turned off in order to save power consumption.
Instead, the modulation / demodulation device, which consumes less power than the data terminal device, is always operated. Then, when the modem device receives an incoming call from the communication line to the data terminal device, the received data is temporarily stored in the memory circuit in the modem device.
After the operator, who knows the incoming call to the data terminal device, confirms that the data terminal device has received the data, turns on the power of the data terminal device, and after the data terminal device starts up, the data is stored in the memory circuit of the modem device. The received data is transferred to the data terminal device.

[0004]

In a receiving system for receiving a data signal such as a facsimile signal, which is constituted by connecting the above-mentioned conventional data terminal device and a modulation / demodulation device, the power supply of the data terminal device is always on. To keep the data terminal device in a constantly operating state, or in order to save the power consumption of the data terminal device, the data terminal device is normally turned off, and instead, the power consumption of the data terminal device is reduced. It is practiced to keep a small number of modulator / demodulators operating at all times. In this state, when a data signal such as a facsimile signal is received by the data terminal device, the received data is temporarily stored in a memory circuit provided in the modulator / demodulator so that the operator of the data terminal device can It was necessary to confirm the arrival of the data signal to the device, turn on the power of the data terminal device, and then transfer the received data stored in the memory circuit of the modulation / demodulation device to the data terminal device. However, in the former case, considerable power consumption is required for the data terminal device, and in the latter case, the data terminal device is powered on when a data signal arrives and is stored in the memory circuit of the modulation / demodulation device. The work of transferring the received data to the data terminal equipment is a heavy burden for the operator, and the memory capacity of the modulator / demodulator is limited. It had the drawback that it would be impossible to receive it.

An object of the present invention is to save the power consumption of the data terminal device, reduce the burden on the operator of the data terminal device, and avoid the situation where the reception of the data signal becomes impossible due to the insufficient memory capacity. It is to provide a modulator / demodulator capable of performing the above.

[0006]

According to the present invention, there is provided a modem apparatus comprising:
Means connected between the communication line and the data terminal device, for demodulating a data signal transmitted when there is an incoming call from the partner terminal device to the data terminal device via the communication line, and the data signal In a modulation / demodulation device provided with a means for temporarily storing the data signal output from the means for demodulating the data signal, the power supply to the data terminal device is stopped in the state of waiting for the data signal, Means for automatically supplying power to the data terminal device only when there is an incoming call; and means for automatically transferring the temporarily stored data signal to the data terminal device after the reception of the data signal is completed. It is configured with.

Further, the modulation / demodulation device of the present invention is connected between a communication line and a data terminal device, and is transmitted when there is an incoming call from the partner terminal device to the data terminal device via the communication line. In the modulation / demodulation device, the modulation / demodulation device demodulates the data signal, and the reception data storage device temporarily stores the data signal output from the modulation / demodulation device. Power supply condition input means for performing an input for presetting supply conditions to the data terminal device, and (B) supply to the data terminal device based on the supply condition input from the power supply condition input means. A power supply opening / closing means for turning on / off a power supply, (C) the data end of the power supply opening / closing means based on the supply condition input from the power supply condition input means When the modulation / demodulation means receives the data signal while controlling the on / off of the power supplied to the device and the power supply opening / closing means is turning off the power supplied to the data terminal device, the modulation / demodulation means After the reception of the data signal is completed, the data signal is controlled to be output to the received data storage means, and the power supply opening / closing means is controlled to turn on the power supplied to the data terminal device. Controlling the data signal stored in the received data storage means to be transferred to the data terminal device and ending the transfer of the data signal to the data terminal device, And a control means for controlling to turn off the power supplied to the data terminal device.

Further, the modulation / demodulation device of the present invention is configured so as to correspond to the case where the data signal is a facsimile signal.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a modulation / demodulation device of the present invention.

A modulation / demodulation apparatus 1 of this embodiment shown in FIG.
Is connected between the communication line 3 and the data terminal device 2 for receiving a facsimile signal, and receives a facsimile signal as a data signal transmitted from a partner terminal device (not shown) through the communication line 3. It is configured to demodulate and send the demodulated facsimile signal to the data terminal device 2. Further, the modulation / demodulation device 1 receives a facsimile signal transmitted from a partner terminal device via the communication line 3, demodulates it, and outputs a demodulated facsimile signal, and a facsimile output from the modulation / demodulation unit 4. A reception data storage unit 5 for storing signals, and an input for presetting conditions for supplying the data terminal device power supply 9 with an externally supplied data terminal device power supply 9 as a power supply used for the data terminal device 2. A power supply condition input unit 6, a power supply supply opening / closing unit 7 for turning on / off a data terminal device power supply 9 supplied to the data terminal device 2 based on a condition input from the power supply condition input unit 6, and a power supply The power supply opening / closing unit 7 is controlled based on the condition input from the condition input unit 6 to turn off the power supplied by the power supply opening / closing unit 7 to the data terminal device 2. When receiving a facsimile signal, causes the output stored in the received data storage unit 5 facsimile signal modulation and demodulation unit 4 demodulates the time,
The control unit 8 controls the power supply opening / closing unit 7 to supply power to the data terminal device 2, and after receiving the facsimile signal, reads the facsimile signal from the received data storage unit 5 and transfers the facsimile signal to the data terminal device 2. To be done.

Next, the operation will be described.

In FIG. 1, a modulation / demodulation device 1 receives a facsimile signal transmitted from a partner terminal device via a communication line 3 and demodulates it in a modulation / demodulation unit 4. The demodulated facsimile signal is sent to the data terminal device 2 via the control unit 8 while the data terminal device 2 is powered on and in operation. However, when waiting for the reception of a facsimile signal, the control unit 8 controls the power supply opening / closing unit 7 to automatically turn off the data terminal device power supply 9 supplied to the data terminal device 2 in order to save power consumption. As a result, the power supply to the data terminal device 2 is stopped. When the modulation / demodulation unit 4 receives a facsimile signal in this state, the modulation / demodulation unit 4 outputs the demodulated facsimile signal to the reception data storage unit 5 and stores it in the reception data storage unit 5 under the control of the control unit 8. On the other hand, the control unit 8 controls the power supply opening / closing unit 7 to automatically turn on the switch for turning on / off the data terminal device power supply 9 to supply the data terminal device power supply 9 to the data terminal device 2. When the data terminal device power supply 9 is supplied to the data terminal device 2 and the data terminal device 2 is in the operating state, the control unit 8 automatically outputs the facsimile signal stored from the received data storage unit 5 after the reception of the facsimile signal. It is read and transferred from the control unit 8 to the data terminal device 2. After the transfer of the facsimile signal to the data terminal device 2 is completed, the control unit 8 controls the power supply opening / closing unit 7 so that the power supply opening / closing unit 7 turns off the data terminal device power supply 9 supplied to the data terminal device 2. . In the above description, in the standby state for receiving the facsimile signal, the operation of the data terminal device is stopped in order to save power consumption, and when the facsimile signal is received, the data terminal device 2 is put into the operating state. However, the condition for when the control unit 8 controls the power supply opening / closing unit 7 to turn on / off the data terminal device power supply 9 to be supplied to the data terminal device 2 is the power supply condition input unit in advance. Input from 6 to the control unit 8. The control unit 8 controls the power supply opening / closing unit 7 based on the condition input from the power supply condition input unit 6 and stored in the control unit 8 to turn on / off the power supplied to the data terminal device 2.

[0014]

As described above, when the modulation / demodulation device of the present invention is connected between a communication line and a data terminal device to automatically receive a data signal, the data signal is sent to the data terminal device in a standby state. Means for automatically supplying power to the data terminal device when there is an incoming call from the partner terminal device, and for temporarily storing the received and demodulated data signal and for storing the data signal stored after reception. By providing means for automatically transferring to the data terminal device, while saving the power consumption of the data terminal device,
This has the effect of reducing the burden on the operator of the data terminal device and avoiding a situation in which reception of data signals becomes impossible due to lack of memory capacity.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a modulation / demodulation device of the present invention.

[Explanation of symbols]

 1 Modulator / Demodulator 2 Data Terminal Device 4 Modulator / Demodulator 5 Received Data Storage 6 Power Supply Condition Input 7 Power Supply Opening / Closing 8 Control

Claims (3)

[Claims] 1. A means for demodulating a data signal which is connected between a communication line and a data terminal device and which is transmitted when there is an incoming call from the partner terminal device to the data terminal device via the communication line. In the modulation / demodulation device having a means for temporarily storing the data signal output from the means for demodulating the data signal, the power supply to the data terminal device is stopped in a state of waiting for the data signal, Means for automatically supplying power to the data terminal device only when an incoming call is received from the partner terminal device, and the data signal device temporarily storing the data signal temporarily stored after the reception of the data signal is completed. And a means for transferring the data to the modem. 2. The data signal is connected between a communication line and a data terminal device, and demodulates the data signal transmitted when an incoming call is received from the partner terminal device to the data terminal device via the communication line. A modulation / demodulation device comprising modulation / demodulation means and reception data storage means for temporarily storing the data signal output from the modulation / demodulation means, (A) supply condition of the power supply for the data terminal device to the data terminal device Power supply condition input means for performing an input for presetting, and (B) a power supply for turning on / off the power supply to the data terminal device based on the supply condition input from the power supply condition input means. Opening / closing means, (C) turning on / off the power supplied to the data terminal device of the power supply opening / closing means based on the supply condition input from the power supply condition input means. When the modulation / demodulation means receives the data signal while controlling, and the power supply opening / closing means turns off the power supplied to the data terminal device,
The modulation / demodulation means controls the data signal to be output to the reception data storage means, and the power supply opening / closing means controls to turn on the power supplied to the data terminal device to receive the data signal. After the
After the data signal stored in the received data storage means is read out and controlled to be transferred to the data terminal device, and after the transfer of the data signal to the data terminal device is completed, the power supply opening / closing means is A modulation / demodulation device comprising: control means for controlling to turn off the power supplied to the data terminal device. 3. The modulation / demodulation device according to claim 1, wherein the data signal is a facsimile signal.