JPS61105949A - Power source controlling system of telephone terminal - Google Patents

Abstract

PURPOSE:To reduce power consumption by starting power supply to a dial pulse controlling circuit only when a subscriber's key input or hook off is detected by a microcomputer and stopping power source supply after completion of control of the controlling circuit. CONSTITUTION:A microcomputer 3 is always in the state of operation. However, the power source of a dial pulse controlling circuit 2 is cut off. The microcomputer 3 detects hook off and detects that a telephone set is used. When a dial key is depressed by a keyboard, etc., the microcomputer 3 sends out an HS signal to the dial pulse controlling circuit 2. On receiving the HS signal, the power source is applied to the controlling circuit 2 and the circuit becomes the state of operation. After sending out of the dial pulse, the microcomputer 3 is informed of completion of sending out of the dial by disappearance of a mute signal, and makes the controlling circuit 2 to the state of non-operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a power supply method in a telephone terminal.

As is well known, all the driving power for conventional telephones was supplied from the central office, but in the case of various telephone terminals that have been developed recently, the power supplied from the central office and the power provided inside the device are combined. There are many things that work. However, since the power supply installed in the device uses a dry battery or the like, it is particularly desired to reduce the load on the power supply.

[Conventional technology]

FIG. 3 is a diagram showing an example of a conventional power control method for a telephone terminal.

In the figure, 1 is a built-in power supply, 2 is a dial pulse control circuit, and 3 is a built-in power supply.
is a microcomputer, and 4 is a fukuisochi.

The same symbols represent the same objects throughout the figures below.

There are two types of power sources that drive conventional telephone terminals, one of which is supplied from the central office and is used for communication current.

All other power required to perform various service functions is provided by the built-in power supply.

The built-in power supply 1 shown in FIG. 3 is such a built-in power supply, and a dry battery or the like is used.

When performing various service functions using such a built-in power supply, the power consumption of the dial pulse control circuit 2, which controls the function of generating and sending out dial signals, is very large compared to the power consumption of the microcomputer 3, etc. is normal.

According to the conventional system, circuits such as the microcomputer 3 are normally in operation and ready to respond to calls, but power is not supplied to the dial pulse control circuit 2.

When the caller presses a key or hooks off to make a call, the contacts of the hook switch 4 close, turning on the power to the dial pulse control circuit 2 and putting it into operation. When the subscriber presses the touch button, this information is displayed. Based on this, a predetermined dial signal is sent to the station.

When the other subscriber can be called, the call ends, and the subscriber hooks on, the hook switch 4 is restored and the dial pulse control circuit 2. Turn off the power to the

[Problem that the invention seeks to solve]

As is clear from the above explanation, in the conventional power control system for telephone terminals, power is always turned on to the dial pulse control circuit when the subscriber is hooked off. It only operates once before the start of the process and does not operate thereafter. Therefore, there was a major drawback in that power was wasted unnecessarily.

An object of the present invention is to provide a power control system for telephone terminals that consumes less power.

[Means for solving problems]

A means for solving the problem is that in a telephone terminal whose dial pulse control circuit is controlled by a microcomputer, the power supply to the dial pulse control circuit is normally stopped, and the microcomputer controls the subscriber's key input or This is achieved by detecting F.7 off and starting the power supply to the dial pulse control circuit, and stopping the power supply to the dial pulse control circuit after the dial pulse control circuit completes the dial pulse control.

[Effect]

According to the present invention, the microcomputer detects the subscriber's key input or hook-off and starts supplying ta to the dial pulse control circuit, and then detects that the call state has entered and stops the power supply to the dial pulse control circuit. As a result, the effective power consumption of the dial pulse control circuit is significantly reduced.

〔Example〕

FIG. 1 is a diagram showing an embodiment of a power supply control method for a telephone terminal according to the present invention.

FIG. 2 is a flowchart of the operation according to the present invention.

In the figure, 5 is a telephone circuit network, 6 is a dial pulse control circuit 2
7 is a rectifier circuit; 8 is a mute circuit for disconnecting the telephone network 5 while dial pulses are being sent under the control of the dial pulse control circuit 2; 9 is a keyboard.

In the present invention, the microcomputer 3 is always in operation, but the power to the dial pulse control circuit 2 is turned off.

When the subscriber hooks off, the hook switch 4
When the 4° contacts are closed, a loop is formed between the terminals L1 and L2 through the telephone network 5, and the microcomputer 3 detects hook-off and detects that the telephone has been used.

Next, when a dial key is pressed on the keyboard 9 or the like, the microcomputer 3 controls the dial pulse control circuit 2.
Sends H3 signal to.

The dial pulse control circuit 2 is powered on by receiving the H8 signal from the microcomputer 3 and enters an operating state. The dial pulse control circuit 2 is first connected to the mute circuit 8.
, and the mute circuit 8 disconnects the telephone network 5 from the circuit.

Computer 3 has a key manually dialed 1N! 1, a predetermined dial signal KO~7 is sent to the dial pulse control circuit 2, and the dial pulse control circuit 2 drives the dial pulse generating circuit 6 to send a predetermined dial pulse to the line side.

During this time, the dial pulse control circuit 2 continues to send a mute signal to the microcomputer 3 indicating that the mute circuit 8 is in operation.

When the dial pulse generation circuit 6 sends out a predetermined dial pulse, the dial pulse control circuit 2 restores the mute circuit 8, connects the telephone network 5 to the line again, and the dial pulse control circuit 2 stops sending out the mute signal. .

When the mute signal disappears, the microcomputer 3 becomes aware of the completion of dial transmission, and makes the dial pulse control circuit 2 inoperative.

Incidentally, FIG. 2 is a control flowchart illustrating the power supply control method according to the present invention.

The microcomputer 3 detects the presence or absence of a key input or hook-off (2), and if there is a key input or footer off, determines whether or not the key manual information is valid (2).

If it is valid, determine whether it is dial information or not.■
, If it is not dial information, perform other processing (for example, service registration, etc.) ■.

If it is dial information, dial pulse control circuit 2
Send the HS signal to and turn on the power to the dial pulse control circuit 2 (■).

Next, the dial information (key code, KO to 7) is sent to the dial pulse control circuit 2.

Next, monitor the dial transmission end signal (mute signal).■
, After the dial is sent (mute signal off), the H3 signal is turned off and the voltage of the dial pulse control circuit 2 is turned off.

Therefore, the dial pulse control circuit 2 does not consume power except when sending a dial, and the power consumption of the entire telephone terminal is greatly reduced.

Incidentally, the power consumption of the dial pulse control circuit 2 is normally about 1 mA during operation, and about 10 μA during standby.

〔Effect of the invention〕

As described in detail above, the present invention has the great effect of realizing a power supply control system for telephone terminals that consumes less power.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of a power supply control method for a telephone terminal according to the present invention. FIG. 2 is a control flowchart illustrating the power supply control method according to the present invention. FIG. 3 is a diagram showing an example of a conventional power control method for a telephone terminal. In the figure, 1 is a built-in power supply, 2 is a dial pulse control circuit, and 3 is a built-in power supply.
is a microcomputer, 4 is a hook switch, 5 is a telephone circuit network, 6 is a dial pulse generation circuit, 7 is a rectifier circuit, 8 is a mute circuit, and 9 is a keyboard.

Claims (1)

[Claims] In a telephone terminal in which a dial pulse control circuit is controlled by a microcomputer, the power supply to the dial pulse control circuit is normally stopped, and the microcomputer detects a subscriber's key input or hook-off to turn off the dial pulse control circuit. 1. A power supply control method for a telephone terminal, characterized in that the dial pulse control circuit starts supplying power to the telephone terminal, and stops the power supply to the dial pulse control circuit after the dial pulse control circuit completes the dial pulse control.