JP3472079B2 - 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 terminal device which is connected to a telephone line and is capable of transmitting and receiving image information such as a telephone call and an original document, and to a terminal device having a power saving mode. is there.

[0002]

2. Description of the Related Art Recently, power saving mode has come to be taken up even in facsimiles and the like due to energy saving, and when the apparatus is in standby mode, power is supplied only to the minimum circuits such as CPU and various sensors. With such a configuration, when the power saving mode is achieved and operations such as transmission / reception are necessary, the main power supply is turned on from the standby power supply (power saving mode).

[0003]

However, in the above-mentioned conventional example, even in the power saving mode, in the standby mode, the control circuit such as the CPU must be operated at all times, and power is required even for several watts. Therefore, it cannot be said that the power saving mode is complete.

Therefore, it is not economical because the power source and the device must be activated all the time.

Further, there are problems in terms of reliability such as failure and safety, which causes accidents such as fire.

[0006]

[Means for Solving the Problems] To achieve the above object
In addition, the terminal device according to claim 1 of the present invention is connected to
An operating power supply means for supplying power to the terminal device from a commercial power source in an operating state by performing communication through a communication line, and the operating power supply means for connecting the operating power supply means to the terminal device so that the operating power supply means supplies power to the terminal device. The control means for controlling the power supply and the power supply by the operating power supply means are stopped.
In the standby state, the standby power supply means for supplying power to the control means, and the power source connected to the communication line.
The light means and the light from the light emitting means are received and converted into electric power.
Conversion means, and the standby power supply means is
The power supply means is not connected to the terminal device
Then, the electric power output from the conversion means is supplied to the control means.

According to a second aspect of the present invention, there is provided the terminal device as described above.
The power supply means charges the electric power obtained from the communication line 2
It is characterized by having a secondary battery.

The terminal device according to claim 3 is further attached to
Whether to connect the telephone and the communication line of
Switching means for switching between a storage device and the communication line
And the switching means causes the telephone to communicate with the communication line.
Connected to, the phone is off-hook and the DC loop
Is closed, the standby power supply means is
Obtaining power from the DC voltage of a closed DC loop
Is characterized by.

A terminal device according to a fourth aspect is the communication line.
Is connected to the terminal device, the communication line is closed,
When the loop of the DC circuit is formed, the light emitting means
Is characterized by generating a photovoltaic power.

The terminal device according to claim 5 is the conversion means.
Is a solar cell consisting of a photovoltaic diode array.
And are characterized.

[0011]

[0012]

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION First, the configuration of an embodiment of the present invention will be described with reference to FIG.

FIG. 1 is a drawing that best represents the features of the embodiment of the present invention. In FIG. 1, 1 is a terminal device connected to a telephone line, 2 is the telephone line, and 3 is the same line. Connected telephones, 4 are those connected to the line first, the terminal device, and the CML relay that switches by the telephone, 5
Is an LED that emits light with a current that flows when the line is closed and the DC circuit is closed. 6 receives the light from the previous LED,
A so-called solar cell such as a photovoltaic diode array that generates electromotive force, 7 is a charging circuit that charges the rechargeable battery with the electromotive force, and 8 is a call that detects a call signal when the terminal device automatically receives The signal detection circuit 9 is a control circuit for activating the above-mentioned terminal device, which is a main circuit of the embodiment of the present invention, and controls the start-up of the main power supply at the time of transmission.

Next, the specific operation of the embodiment of the present invention having the above structure will be described with reference to the flowchart of FIG.

Start, S1: If transmission is to be performed here, S2: The telephone 3 of FIG. 1 is taken off-hook. S3: When the telephone 3 is hooked off, the DC circuit of the connected communication line is closed. S4: Here, when the DC circuit is closed, the LED of FIG.
An electric current flows through 5 to emit light. S5: Then, the light receiving section 6 of FIG. 1 receives the light and generates an electromotive force. S6: Then, charging is started by the charging circuit 7 of FIG.
At this time, if the charging voltage of the charging circuit becomes equal to or higher than the specified voltage, it means that sufficient power has been charged to turn on the main power source, so S8: turn on the main power source of the device. (In this embodiment, AC is coupled by the relay.) S9: Since the main power supply is turned on, the terminal device starts the transmission operation.

At this time, as can be seen from FIG. 1, since the communication line is supplemented during transmission / reception, a direct current flows through the line, and as a result, a current flows through the LED 5, so charging is performed in the same manner. It is charged in the circuit 7.

Further, when the terminal device operates without supplementing the communication line such as copying, the charging circuit 7 is charged from the commercial power source.

As described above, according to the present embodiment, the electric power for activating the control circuit of the terminal device is isolated from the telephone line to which the terminal device is connected when the transmission operation is required. In this state, the commercial power supply is turned on, the control circuit such as the CPU is activated, the main power supply is turned on, and the transmission operation is started. ,
Complete 0W standby is possible, which is effective in saving power to the device.

Further, a charging circuit for charging and accumulating the electric power taken out in an insulated state in a secondary battery or the like is provided.
When devices such as receiving / copying (excluding standby in power saving mode) operate on commercial power, by charging this charging circuit from commercial power as well, it becomes possible to transmit only with power from the line. It takes a long time to charge the battery until it reaches the specified voltage, and it takes a long time to prepare for the transmission, but this is solved by providing a charging circuit that stores the charging power from the commercial power supply.

Considering the other way around, with such a configuration, normally the power source is started by the charging power from the commercial power source, but when the device does not operate for a while (transmission / reception /
It can also be said that when the charging circuit is discharged, such as copying), the minimum power required to activate the control circuit of the device is supplied from the connected communication line.

With the above-mentioned configuration, it is possible to prevent the operation from becoming unstable due to insufficient charging and voltage drop when the control circuit is operated or the main power supply is turned on. Is possible.

[0023]

According to the present invention, the operating power supply means for supplying electric power from the commercial power supply to the terminal communication device in the operating state , and the operating power supply means and the terminal device are combined,
Control so that the operation power supply means supplies power to the terminal device
Control means to stop the power supply from the operating power supply means.
Connected to the communication line with a standby power supply means for supplying power to the control means in a standby state in which it is stopped
Light emitting means and the light of the light emitting means are received to generate electric power.
And a conversion means for converting the standby power supply means.
Means that the operating power supply means is coupled to the terminal device.
In the absence, because supplying electric power to the converting means outputs to the control means, can stop use of the commercial power supply in the standby state, to obtain the power required to switch from the standby state to the operation state from the communication line Therefore, a device with lower power consumption can be provided.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention and best showing the features thereof.

FIG. 2 is a flowchart showing an operation example of the present invention.

[Explanation of symbols]

1 terminal device 2 telephone lines 3 telephones 4 CML relay 5 LED 6 Photovoltaic diode array 7 charging circuit 8 Ring signal detection circuit 9 Control circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-9-8969 (JP, A) JP-A-8-223313 (JP, A) JP-A-7-321964 (JP, A) JP-A-4- 217824 (JP, A) JP-A-4-150451 (JP, A) Actually opened 62-188855 (JP, U) Actually opened 60-132147 (JP, U) Actually opened 6-26353 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04N 1/00-1/00 108 H04M 3/02-3/06 H04M 19/00-19/08 H02J 7/00-7/12 H02J 7/34-7/36

Claims (5)

(57) [Claims] 1. A terminal apparatus that communicates via the connected communication line and said the operating power supply unit supplying power to the terminal apparatus, by coupling the terminal device and the operating power unit from a commercial power supply in the operating state , Said motion
The power supply means controls to supply power to the terminal device.
The control means and the star whose power supply by the operating power supply means is stopped
Standby power supply means for supplying power to the control means in a standby state, light emitting means connected to the communication line, and conversion means for receiving light from the light emitting means and converting it into electric power
And the standby power supply means has the operating power supply means
The conversion means is output when it is not connected to the end device.
A terminal device, characterized in that it supplies power to the control means. 2. The terminal device according to claim 1, wherein the standby power supply means has a secondary battery that charges electric power obtained from the communication line. 3. The apparatus according to claim 1, further comprising switching means for switching between connecting the attached telephone and the communication line or connecting the terminal device and the communication line. When the telephone is connected to the communication line, the telephone is off-hook and the DC loop is closed, the standby power supply means obtains electric power from the DC voltage of the closed DC loop. Terminal device. 4. The method of claim 1, wherein the communication line is connected to the terminal device, the communication line is閉結, when the loop of the direct current circuit is formed, the light emitting means, generating a photovoltaic A terminal device characterized by making it. 5. The method of claim 1, wherein the conversion means, the terminal apparatus which is a solar cell comprising the photovoltaic diode array.