JPH07281651A - Display power source controller - Google Patents

Abstract

PURPOSE:To provide a display device of less power consumption and longer life without being restricted by software. CONSTITUTION:A service condition monitoring section 30 outputs a service condition notice signal Sc every time it is inputted with a signal Sa or Sb from the key board 1 or the mouse 2. A timer control section 31 outputs an off-control signal Sd when it does not receive the signal Sc for a specified period of time or more to cause a power source control section 32 to interrupt the supply of power source voltage. After that, if the key board 1 or the mouse 2 is operated, the monitoring section 30 outputs a signal Sc again. On receiving the signal Sc, the timer control section 31 outputs an on-control signal Sd and the power source control section 32 restart the supply of power source voltage Vo. Thus the power source of the display device 5 is controlled according to the service condition of the device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display power supply control device for controlling the power supply of a display device for displaying an information processing device according to the usage status of an input device.

[0002]

2. Description of the Related Art In a display device such as a CRT display connected to an information processing device, when a display is performed for a long time, a phenomenon in which only a specific part of the screen is consumed and its mark remains, so-called burn-in occurs. There is. Therefore, in order to prevent such screen burn-in, there is software called a screen saver that darkens the screen or moves a stationary display under certain conditions. This screen saver is an operating system (OS)
m) and the application software, monitor the use of an input device such as a keyboard or mouse, and if there is no input from this input device for a preset time, turn off the screen display or display a stationary display. I am moving it.

[0003]

The conventional screen saver can prevent screen burn-in from the above, but it is necessary to facilitate the screen saver suitable for each OS, depending on the application software to be used. Has a problem that there are many restrictions depending on the software used, such as the screen saver not working properly and the operation of application software being hindered. In addition, since the power of the display device is not turned off, the power consumption of the display device does not change so much and the service life is hardly improved. SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is capable of saving power and extending the life of a display device without being restricted by software.

[0004]

SUMMARY OF THE INVENTION According to the present invention, when the input device of the information processing device is not used for a predetermined time or more, the display device for displaying the information processing device is turned off,
After that, when the input device is used, the display device is turned on. Further, when a signal corresponding to the input operation is output from the input device of the information processing device, a usage notification signal is output and a signal from the input device is output to the information processing device as it is, and A timer control unit that outputs an off control signal when the usage notification signal is not output from the usage status monitoring unit for a predetermined time or more, and outputs an on control signal when the usage notification signal is output after the output of the off control signal, Supply the power supply voltage to the display device that displays the information processing device, stop the supply of the power supply voltage to the display device when the off control signal is output from the timer control unit, and stop the supply of the power supply voltage to the display device when the on control signal is output. And a power supply control unit for starting supply of power supply voltage to the display device.

[0005]

The display power supply control device of the present invention controls the power supply of the display device according to the usage status of the input device. Further, when the usage status monitoring unit that monitors the usage status of the input device does not output the usage notification signal for a predetermined time or longer, the timer control unit outputs the OFF control signal, and the power supply control unit receiving the OFF control signal causes the display device to display the OFF control signal. To stop the supply of power supply voltage. Then, when the usage notification signal is output from the usage status monitoring unit after the supply is stopped, the timer control unit outputs the ON control signal, and the power supply control unit starts the supply of the power supply voltage to the display device.

[0006]

1 is a diagram showing the configuration of a display power supply control apparatus according to an embodiment of the present invention. Reference numeral 1 is a keyboard which is an input device, 2 is a mouse which is also an input device, 3 is a display power control device, 4 is an information processing device using a computer, and 5 is a display device such as a CRT, a liquid crystal display or a plasma display.

Reference numeral 30 is a usage status monitoring unit that monitors the usage status of the keyboard 1 and mouse 2 and outputs the operation status to a timer control unit, which will be described later, as a usage notification signal, and 31 is the usage status monitoring unit 30. A timer control unit that outputs an off control signal when the usage notification signal is not output for a predetermined time or more and outputs an on control signal when the usage notification signal is output after the off control signal is output. Supplying power supply voltage, timer control unit 3
1 is a power supply control unit that stops the supply of the power supply voltage to the display device 5 when the OFF control signal is output, and starts the supply of the power supply voltage when the ON control signal is output.

Further, Vin is an input power supply voltage obtained from a commercial power distribution line (100 V AC) or a power supply interlocked with the information processing device 4 (not shown), and Vo is a power supply controller 32.
Output power voltage output from the keyboard 1 to the display device 5, Sa is an input signal output from the keyboard 1 when a key of the keyboard 1 is operated, and Sb is a position of the mouse 2 when the mouse 2 is operated. Alternatively, an input signal output from the mouse 2 according to the state of the button, Sc is a usage notification signal output from the usage status monitoring unit 30, Sd is an on or off control signal output from the timer control unit 31, and Sv is information. This is a video signal output from the processing device 4.

In the present embodiment, the information processing device 4 and the display device 5 are separately supplied with power, the information processing device 4 is directly supplied with power from a commercial distribution line, and the display device 5 is supplied with power to the display. It is supplied from the power supply control device 3.

Next, as an operation of the display power supply control device 3, the case where the information processing device 4 and the display device 5 are turned on will be described. In this case, the power controller 32 of the display power controller 3
Therefore, the output power supply voltage Vo is output from.

When the operator of the information processing device 4 operates the keyboard 1 or the mouse 2, these devices output an input signal Sa or Sb corresponding to the operation. The usage status monitoring unit 30 outputs the input signals Sa and Sb as they are to the information processing device 4. Then, the information processing device 4 performs data processing based on the input signals Sa and Sb, and outputs the result as a video signal Sv to the display device 5. Thus, the result of the data processing is displayed on the display device 5.
Is displayed in.

Next, while the information processing device 4 is being used, the information processing device 4 may be left behind by the operator leaving the seat.
The operation when is not used for a while will be described. As described above, the usage status monitoring unit 30 outputs the input signals Sa and Sb input from the keyboard 1 and the mouse 2 to the information processing device 4 as they are, and the usage notification signal each time the input signal Sa or Sb is input. The Sc is output to the timer control unit 31.

Then, the timer control section 31 determines that the use notification signal Sc is not output for a predetermined time or more, which is set in advance.
An off control signal S for instructing the power control unit 32 to turn off the power when it is determined that the keyboard 1 and the mouse 2 are not used.
Output d. The power supply control unit 32 to which the off control signal Sd is input sets the output power supply voltage Vo to 0 and stops the supply of the power supply voltage to the display device 5. If the keyboard 1 and the mouse 2 are not operated for a predetermined time as described above, the power of the display device 5 is turned off.

Next, when the keyboard 1 or the mouse 2 is operated due to the operator returning to the seat,
The input signals Sa and Sb are output from the keyboard 1 and the mouse 2, and the use notification signal Sc is output again from the use status monitoring unit 30. When the timer control unit 31 receives the use notification signal Sc after outputting the OFF control signal Sd, the keyboard 1
And it judges that the use of the mouse 2 has been resumed, and outputs the ON control signal Sd for instructing the power supply control unit 32 to turn on the power supply.

The power supply controller 32, to which the ON control signal Sd is input, restarts the supply of the output power supply voltage Vo to the display device 5. In this way, the power of the display device 5 is turned on again, and the contents displayed immediately before the power is turned off are displayed on the display device 5. As mentioned above,
Since the power supply of the display device 5 is controlled by hardware according to the usage status of the keyboard 1 and the mouse 2, it is possible to save power and extend the life of the display device 5 without being restricted by software.

Further, the display power control device 3 is externally attached, that is, the input signal S from the keyboard 1 and the mouse 2.
By outputting a and Sb as they are to the information processing device 4 and supplying power from the display power control device 3 to the display device 5, the keyboard 1, the mouse 2, the information processing device 4, and the display device 5 are particularly hand-held. A general one can be used as it is without the need to add it.

Although the keyboard 1 and the mouse 2 are used as the input device in this embodiment, a trackball may be used as the input device, and an RS-232C interface device or RS-42 to which some external device is connected.
It may be a two-interface device. RS-232C
When the interface device or the RS-422 interface device is used as the input device, the usage monitoring unit 30
Is the information processing device 4 through these interface devices.
The signal exchanged between the external device and the external device is directly output to the information processing device 4 or the interface device (that is, the external device), and the use notification signal Sc is output to the timer control unit 31 every time such communication is performed. As a result, the same operation as described above can be realized.

Further, although it cannot be applied to the general purpose as described above, instead of stopping the power supply from the display power supply control device 3, the display device 5 is controlled by the on / off control signal Sd from the timer control unit 31. You may make it turn on / off the power supply inside.

[0019]

According to the present invention, since the power supply of the display device is controlled by the hardware according to the usage status of the input device, it is possible to realize the screen saver which is not restricted by the software and to save the power consumption of the display device. And longer life can be achieved.

Further, by providing the usage status monitoring section, the timer control section, and the power supply control section, it is possible to realize a display power supply control apparatus for controlling the power supply of the display apparatus according to the usage status of the input apparatus. The input device, the information processing device, and the display device do not need to be touched, and general devices can be used as they are.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a display power supply control device that is an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 keyboard 2 mouse 3 display power control device 4 information processing device 5 display device 30 usage monitoring unit 31 timer control unit 32 power control unit

Claims (2)

[Claims] 1. When the input device of the information processing device has not been used for a predetermined time or more, the power of the display device for displaying the information processing device is turned off, and when the input device is subsequently used, the display device A display power supply control device characterized by turning on the power supply. 2. A usage status monitor that outputs a use notification signal and outputs the signal from the input device to the information processing device as it is when a signal corresponding to the input operation is output from the input device of the information processing device. Section and a timer that outputs an off control signal when the usage notification signal is not output from the usage status monitoring part for a predetermined time or more, and outputs an on control signal when the usage notification signal is output after the off control signal is output. A power supply voltage is supplied to the control unit and the display device that displays the information processing device, and when the off control signal is output from the timer control unit, the supply of the power supply voltage to the display device is stopped, and an on control signal is supplied. And a power supply control unit for starting supply of a power supply voltage to the display device when is output.