JPH0514557A - Key telephone system - Google Patents

Abstract

PURPOSE:To save power consumption by stopping power feeding from a master set to the key telephone set with an input of a control request signal from the key telephone set. CONSTITUTION:When an operation section 51-1 of a key telephone set 5-1 inputs a control request data for power saving function setting, a telephone set control section 51-2 recognizes the data and sends the control request data to a control section 11 via a pushbutton telephone set interface section 12. Upon the receipt of the control request data, the control section 11 sends a control data to feeding switch sections 12-2-12-n corresponding to the key telephone sets 5-2-5-n to be in the designated power saving state. The feeding switch sections 12-2-12-n are opened to stop the power supply DC/DC converters 52-32-52-n of the key telephone sets 5-2-5-n. As a result, the key telephone sets 5-2-5-n reach the power saving state and are inactivated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone device.

[0002]

2. Description of the Related Art A conventional key telephone device has a structure in which power is supplied from a main unit to the key telephone even when it is not used at night.

[0003]

Since the above-mentioned conventional button telephone device is configured to supply power from the main unit to the button telephone even when it is not used at night, the button telephone can be used at night. Even when it is not performed, it is always in a standby operation state, and there is a disadvantage that power is wasted.

[0004]

The key telephone device of the present invention is a key telephone device having a main unit for accommodating a plurality of key telephones including a DC / DC converter for distributing a DC voltage therein. DC / D
A signal sending means for sending to the main device a request signal for requesting to stop the supply of DC power to the C converter;
The main device has a power supply stopping means which, when receiving the request signal, stops the supply of DC power to the DC / DC converters of the plurality of button telephones excluding the key telephone which has transmitted the request signal from the internal power supply device. is doing.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.

In FIG. 1, the key telephone device of the present embodiment comprises a main unit 1 for accommodating key telephone units 5-1 and 5-2 to 5-n, and the key telephone unit 5-1 is connected to the main unit 1. Operation unit 51-1 for inputting a control request signal, and operation unit 51
-1 receives a control request signal input from -1 to the main device 1 and vice versa, and receives a control signal from the main device 1, and a power supply unit 13 from the main device 1 to receive power from the inside. DC / DC converter 51-3 for distributing DC voltage to
And the key telephone 5-2 similarly has an operating unit 52-1,
Telephone control unit 52-2, DC / DC converter 52-3
Similarly, the key telephone 5-n has the operation unit 5n-
1, telephone controller 5n-2, DC / DC converter 5n
-3, and the main device 1 is a key telephone set 5-1 and 5-2.
Button telephone interface section 12 for interfacing with 5-n, and DC / DC converters 51-3, 52-3
5n-3, a current unit 13 for supplying a DC power source, and a control unit 11 for controlling the main device 1 as a whole. The button telephone interface unit 12 includes a DC / DC converter 51-3,
The power supply switch units 12-1 and 12-2 to 12-n for controlling the power supply to 52-3 to 5n-3 are included.

Next, the control operation of power supply to the key telephone in this embodiment will be described.

For example, when the user of the present embodiment finishes working, a key telephone 5 which is designated in advance as a power saving function setting
When a predetermined power saving function setting number is input from the operation unit 51-1 including dial buttons, office line buttons, function buttons, etc. from -1, the telephone control unit 51-2 recognizes it and enters the power saving mode. The control unit 11 transmits the control data that conveys the setting via the button telephone interface unit 12.
Send to.

The control unit 11 recognizes the control data from the key telephone set 5-1 and supplies the power supply switch units 12-2 to 12-corresponding to the key telephone sets 5-2 to 5-n that should be in the power saving state designated in advance. DC / DC converter 52 included in the key telephones 5-2 to 5-n, which should send control data to the n and enter the power-saving state by stopping the power supply from the power supply unit 13.
-3 to 5n-3, so as to cut off the power supply to the power supply switch unit 1
2-2 to 12-n are opened. As a result, the key telephones 5-2 to 5-n in the power saving state are in the non-operating state.

It is also possible to previously designate a plurality of key telephones for power saving function setting. In addition, for example, by inputting the data for canceling the power saving function from the key telephone for setting the power saving function, there is provided a means for restoring the normal operation (means for short-circuiting the power feeding switch units 12-1 to 12-n). Needless to say.

[0012]

As described above, according to the present invention, in a key telephone device having a main unit for accommodating a plurality of key telephones including a DC / DC converter for distributing a DC voltage therein, the key telephone is a DC / DC converter. A plurality of signal transmitters for transmitting a request signal for requesting to stop the supply of direct-current power to the main device, and the main device receives a request signal and outputs a request signal from an internal power supply device except for a key telephone. By providing the power supply stopping means for stopping the supply of the DC power supply to the DC / DC converter of the button telephone set to the button telephone set that does not need to be used when the button telephone device is in the standby state, for example, in the office after work. Since the power supply of can be stopped, there is an effect that the power consumed in vain can be saved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

1 Main Device 11 Control Unit 12 Button Telephone Interface Unit 12-1, 12-2 to 12-n Power Supply Switch Unit 13 Power Supply Unit 5-1 to 5-n Button Telephone 51-1, 52-1 to 5n-1 Operation Unit 51-2, 52-2 to 5n-2 Telephone control unit 51-3, 52-3 to 5n-3 DC / DC converter

Claims (1)

Claim: What is claimed is: 1. A key telephone device comprising a main unit accommodating a plurality of key telephones including a DC / DC converter for distributing a DC voltage inside, wherein the key telephone is connected to the DC / DC converter. Button telephone which has a signal sending means for sending a request signal for requesting to stop the supply of the DC power supply to the main device, and when the main device receives the request signal, it sends the request signal from the internal power supply device. The key telephone device is characterized in that it has power supply stopping means for stopping the supply of DC power to the DC / DC converters of the plurality of button telephones except the above.