JPH04344692A - Display device - Google Patents

Abstract

PURPOSE:To prolong the life and reduce the power consumption by informing a control part of the fact that an infrared sensor does not detect an operator any more in such a case and performing control by the control part so that the brightness of a display part is decreased. CONSTITUTION:The infrared sensor 5 detects the operator 1 being present in front of an operation part 2, but when the sensor does not detect the operator any more, the infrared sensor 5 sends a signal 13 indicating that there is not the operator 1 to the control part 3. The control part 3 one confirming that sends data for the decrease in brightness with a display control signal 12. The display part 4 decreases the brightness of a display on receiving the data. When the infrared sensor 5 detects the operator 1 again, that is reported to the control part 3 by the signal 13, which sends data for an increase in the brightness with the display control signal 12. The display part 4 receives the data for the increase in the brightness from the control part 3 and increases the brightness of the display.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to display devices, and more particularly to display devices that require an operator.

0002

2. Description of the Related Art Display devices generally require time to start up, so even if an operator leaves the device, the power is not turned on or off. Therefore, the display device continues to display the previous display.

A conventional display device will be explained with reference to FIG.

[0004] The operator inputs data from the operation section 6. The input data is sent to the control section 7 as an operation section input signal 14.
is transmitted to. The control section 7 processes the operation section input signal 14 and transmits the processing contents to the display section 8 by means of a display control signal 15. The display unit 8 displays the content transmitted by the display control signal 15.

[0005]

[Problems to be Solved by the Invention] In this conventional display device, the display continues to be displayed even when the operator is away from the device, so the life of the display section is short and power is wasted. There was a problem with that.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a display device with a long life and low power consumption.

[0007]

[Means for Solving the Problems] The display device of the present invention includes a detection means for detecting that an operator is at a predetermined location, and a display means for lowering the brightness when the means does not detect the operator. It is equipped with

[0008] The detection means may be an infrared sensor or an ultrasonic sensor.

[0009]

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

FIG. 1 is a drawing showing an embodiment of the present invention, in which part (a) is a block diagram and part (b) is a perspective view.

[0011] An operator 1 inputs data from an operation section 2. The input data is transmitted to the control section 3 as an operation section input signal 11. The control unit 3 processes the input operation unit input signal 11 and transmits the content to be displayed on the display unit 4 using a display control signal 12. The display section 4 displays display contents based on the display control signal 12.

On the other hand, the infrared sensor 5 detects that the operator 1 is in front of the operating section 2. When the operator 1 is no longer detected by the infrared sensor 5, a signal 13 indicating that the operator 1 is not present is transmitted from the infrared sensor 5 to the control unit 3. When the control unit 3 confirms by the signal 13 that the operator 1 is gone, it transmits data indicating that the brightness should be lowered by the display control signal 12. The display section 4 is
When data indicating that the brightness is to be lowered is received from the control unit 3, the display brightness is lowered. When the infrared sensor 5 detects the operator 1 again, the infrared sensor 5 informs the control section 3 that the operator 1 is present by the signal 13, and the control section 3 detects the operator 1 on the display section 4.
In response, the display control signal 12 transmits data indicating that the brightness should be increased. The display unit 4 increases the brightness of the display by receiving data from the control unit 3 indicating that the brightness should be increased.

Note that the same effect can be obtained by using an ultrasonic sensor instead of the infrared sensor 5.

[0014]

Effects of the Invention As explained above, the present invention detects the operator using the detection means and increases the brightness of the display means only when the operator is present, so that a display device with long life and low power consumption can be achieved. It is effective and effective.

[Brief explanation of drawings]

FIG. 1 is a drawing showing an embodiment of the present invention, and a partial diagram (a
) is a block diagram, and part (b) is a perspective view.

FIG. 2 is a drawing showing an example of a conventional display device, in which part (a) is a block diagram and part (b) is a perspective view.

[Explanation of symbols]

2　　　　Operation section 3 Control section 4 Display section 5 Infrared sensor

Claims (3)

[Claims] 1. A display device comprising: a detection means for detecting that an operator is at a predetermined location; and a display means for lowering brightness when the detection means does not detect the operator. . 2. The display device according to claim 1, wherein the detection means is an infrared sensor. 3. The display device according to claim 1, wherein the detection means is an ultrasonic sensor.