JP3157808B2 - Standby power reduction modem and standby power reduction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standby power reduction modem suitable for low power consumption and a standby power reduction method.

[0002]

2. Description of the Related Art There is a modem having a function of recognizing a telephone call signal (ring signal) and activating a personal computer.

In this system, a modem chip incorporated in a modem board recognizes an input of a ring signal, outputs a main body start signal to a personal computer main body, and starts the personal computer main body.

[0004]

However, in the above-mentioned conventional modem board, power is supplied to maintain a ring signal reception standby state even when a modular cable is not inserted into the modular connector. It is supposed to be.

Therefore, there is a problem that unnecessary power is consumed.

The present invention has been made in view of such a situation, and when a modular cable is not inserted into a modular connector, the supply of power for maintaining a ring signal reception standby state is stopped. Accordingly, it is possible to provide a standby power reduction modem and a standby power reduction method capable of reducing power consumption.

[0007]

According to a first aspect of the present invention, there is provided a low power standby modem comprising a modem board having a function of recognizing a telephone call signal and activating a personal computer main body. On the modem board, a modem chip that recognizes a call signal and outputs a main unit start signal to the personal computer main unit, a switch unit that switches power supplied from the personal computer main unit to the modem chip, and a modular cable are inserted. And a modular connector having a modular connector shell for accommodating the modular cable, a micro switch for detecting accommodation of the modular cable, and recognizing whether or not the modular cable is inserted into the modular connector. If it recognizes that there is no Parts, characterized in that it comprises a modular connection recognition unit to turn off the. Further, the modular connection recognition unit can recognize whether the modular cable is inserted or not by turning on / off the micro switch. A standby power reduction method according to claim 3 is a standby power reduction method for reducing power consumption of a modem board having a function of recognizing a telephone call signal and activating a personal computer main body. A first step of recognizing and outputting a main body start signal to a personal computer main body, a second step of housing a modular cable inserted into a modular connector in a modular connector shell, and detecting accommodation of the modular cable by a microswitch to a third step, when recognizing a fourth step 121 determines whether the modular cable modular connector is plugged and not plugged in, the modem from the personal computer
Fifth to cut off the power supplied to the modem chip of the board
And a step of: In the fourth step, according to the detection result of the accommodation of the modular cable,
A step of recognizing whether the modular cable is plugged in may be included.

[0008]

Embodiments of the present invention will be described below.

(First Embodiment) FIG. 1 is a block diagram showing a first embodiment of a standby power reduction modem according to the present invention, and FIG. 2 is a diagram showing details of a modular connector shown in FIG. FIG. 3 is a diagram showing a simulated circuit configuration of the switch unit of FIG.

The standby power reduction modem shown in FIG. The modem board 11 includes a modem chip 12, a modular connector 13, a modular connection recognition unit 14, and a switch unit 15.

The modem chip 12 recognizes the input of the ring signal and outputs a main body start signal to the personal computer main body 31. The modular connector 13 is a portion into which the modular cable 21 is inserted.

As shown in FIG. 2, the modular connector 13 has a modular connector shell 13a and a micro switch 13b. When the modular cable 21 is inserted from the direction of the arrow, the micro switch 13b
Is pressed in the direction of the arrow, and the switch is turned on.

The modular connection recognition section 14 recognizes whether the modular cable 21 is inserted. The switch unit 15 interrupts the supply of power. Switch part 15
FIG. 3 shows a simulated circuit configuration.

Next, the operation of the standby power reducing modem having such a configuration will be described.

First, in a state where the modular cable 21 is inserted into the modular connector 13, the modem chip 12 recognizes the input of the ring signal and outputs a main body start signal to the personal computer main body 31. to start.

In this case, as described with reference to FIG.
When the switch b is turned on, the insertion of the modular cable 21 is recognized by the modular connection recognition unit 14. As a result, the switch unit 15 is turned on, and power is supplied to the modem chip 12.

On the other hand, when the modular cable 21 is not inserted into the modular connector 13, the micro switch 13b shown in FIG. 2 is turned off. This allows
The modular connection recognition unit 14 recognizes that the modular cable 21 is not inserted.

At this time, the switch unit 15 is turned off by a control signal from the modular connection recognition unit 14, and the supply of power to the modem chip 12 is stopped.

As described above, in the first embodiment, the modular connector 13 recognizes the modular connector 13
It is determined whether or not the modular cable 21 is plugged in, and when it is recognized that the modular cable 21 is not plugged in, the switch unit 15 is turned off and the power supplied from the personal computer main body 31 is cut off. In addition, power consumption can be reduced.

(Second Embodiment) FIG. 4 is a diagram showing a standby power reduction modem according to a second embodiment of the present invention.
FIG. 5 is a diagram showing a modular connector inserted into the modular connector of FIG. 4.

In the second embodiment, the modular cable 21 has four cores. Also, the inner two (2, 3) are used for telephone line signals, and the other two (1, 4) are unused.

As shown in FIG. 4, the modular connector 13 has a circuit configuration corresponding to two unused connectors (1, 4). Then, by connecting two unused (1, 4) modular cables 21, a power supply loop is completed.

Thus, when the modular cable 21 is not connected to the modular connector 13, the power supply loop is released, and the supply of power to the modem chip 12 is stopped.

[0024]

As described above, according to the standby power reduction modem and the standby power reduction method according to the present invention, the modular connection recognition unit recognizes whether or not a modular cable is plugged into the modular connector, and performs the plugging. When it is recognized that the power is not lost, the switch unit is turned off and the power supplied from the personal computer main body is cut off, so that low power consumption can be achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a standby power reduction modem according to the present invention.

FIG. 2 is a diagram showing details of a modular connector of FIG. 1;

FIG. 3 is a diagram illustrating a simulated circuit configuration using a switch unit in FIG. 2;

FIG. 4 is a diagram showing a second embodiment of a standby power reduction modem according to the present invention.

FIG. 5 is a diagram showing a modular connector inserted into the modular connector of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Modem board 12 Modem chip 13 Modular connector 13a Modular connector shell 13b Micro switch 14 Modular connection recognition part 15 Switch part 21 Modular cable 31 Personal computer main body

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 1/00-1/24 H04M 1/58-1/62 H04M 1/66-1/78 H04M 11/00-11 /Ten

Claims (4)

(57) [Claims] 1. A standby power reduction modem comprising a modem board having a function of recognizing a call signal of a telephone and activating a personal computer main body, wherein said modem board recognizes said call signal and said personal computer. A modem chip for outputting a main body start signal to a computer main body; and the modem chip from the personal computer main body.
A switch unit for intermittently supplying power to the power supply, a modular cable inserted and a modular connector shell for accommodating the modular cable;
A modular connector having a micro switch for detecting accommodation of the modular cable; and recognizing whether or not the modular cable is plugged into the modular connector. And a modular connection recognition unit for turning off the power. 2. The modem according to claim 1, wherein the modular connection recognition unit recognizes whether or not the modular cable is inserted by turning on / off the micro switch. . 3. A standby power reduction method for lowering power consumption of a modem board having a function of recognizing a telephone call signal and activating a personal computer main body, wherein the personal computer recognizes the call signal. A first step of outputting a main body activation signal to the main body; a second step of housing a modular cable inserted into the modular connector in a modular connector shell; and a third step of detecting the housing of the modular cable by a microswitch. A fourth step of recognizing whether or not the modular cable is plugged into the modular connector; and, if recognizing that the modular cable is not plugged in, a modem cable of the modem board from the personal computer main body.
And a fifth step of shutting off power supplied to the laptop . 4. The method according to claim 4, wherein the fourth step includes a step of recognizing whether or not the modular cable is inserted according to a detection result of the accommodation of the modular cable. 3. The method for reducing standby power according to item 3.