JPH0522860A - Electronics - Google Patents

Abstract

(57) [Abstract] [Purpose] In electronic equipment, the purpose is to prevent unnecessary lighting of the indicator light indicating that the main power supply is turned on to prevent power consumption. A control circuit for detecting whether or not a power saving function has been selected and a state of each part of the electronic device body by a detection means and controlling ON / OFF of the indicator light based on these results is provided. [Effect] While it can be clearly determined that the main power supply is turned on, the indicator lamp can be turned off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device having a power saving function, and more particularly to an electronic device such as a portable personal computer having a battery as a main power source.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing the appearance of a conventional portable personal computer having a power saving function and a battery as a main power source. In the figure, 1 is a main body including a keyboard, and 2 is information. Is a display unit composed of a liquid crystal display or the like, which are connected to each other,
The structure is such that the main body 1 and the display unit 2 are opened and closed with the connecting portion as a fulcrum. Reference numeral 3a denotes a power-on lamp provided on the main body 1, and is an indicator lamp for displaying the power-on lamp when the device is powered on.
A is attached to a position where the operator of the main body 1 can visually confirm regardless of the opened / closed state of the display 2.

FIG. 5 is a block diagram showing a part of the internal circuit of the apparatus shown in FIG. 4 which is related to the prior art of the present invention. In the figure, 50 is a power save control for performing power save control which will be described later. Circuit, 51 is main body 1 and display 2
Including the main body, 52 is the O of the power-on lamp 3a
A power-on lamp switch for performing N / OFF is shown.

Next, the operation will be described. When the power switch 4 is pressed, the personal computer main body 1
Is turned on, the display unit 2 is energized, the display unit 2 is lit, the display (backlighting) state is set, and the power-on lamp 3a indicating that the power is turned on is displayed.
Lights up, and the operator knows that the portable personal computer has been activated. In addition, this type of portable personal computer uses a battery as a main power source, and has a power saving function that suppresses wasteful consumption of the battery, and is in a state of waiting for a key input such as when the use is temporarily interrupted. If the power consumption continues for a set time or longer, the power saving control circuit 50 operates to stop the display (backlighting) of the display unit 2 even if the main power is turned on, and suppress the consumption of the battery when not in use. It has become. And
When the use is finished, by pressing the power switch 4, the main power supply to the main body device 51 is cut off, and the backlighting of the display unit 2 and the power-on lamp 3a are performed.
Turns off.

[0005]

A problem to be solved by the invention is that in the electronic device having the conventional power saving function as described above, a display such as a power-on lamp is displayed even when it is clear that the power is turned on. The point is that the lights will continue to light. That is, in the above-mentioned portable personal computer, left for a long time with the power turned on,
Even when the power save control circuit operates and is in the power save mode, if the display is in the backlighting state, it is clear to the operator that the power is on, and the display is backlit. In this state, the power-on lamp does not need to be turned on even though it is unnecessary to turn on the battery.
There was a problem that it was shortened by about 5 percent.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain an electronic device which saves power consumption by preventing unnecessary lighting of an indicator light indicating that power is being supplied. I am trying.

[0007]

An electronic device according to the present invention detects whether or not a power saving function is selected and the state of each part of the electronic device by the detection means, and turns on / off the indicator light based on these results. It is characterized in that a control circuit for controlling is provided, and the indicator lamp is turned off while the operator can clearly determine from the outside that the power is on.

[0008]

In the present invention, when it can be clearly determined from the outside that the power is on, the indicator lamp is turned off to prevent wasteful battery consumption.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an external configuration of an apparatus according to an embodiment of the present invention. An electronic device having a power saving function will be described using a portable personal computer as in FIG. In FIG. 1, reference numeral 1 is a main body including a keyboard, 2 is a display unit attached to the main body 1 for displaying information so as to be openable and closable, and 3 is a power-on lamp in the present embodiment, which is a control for controlling a power saving function described later. ON / OFF is controlled by the circuit. Reference numeral 4 is a power switch, and 5 is a detection switch for detecting opening / closing of the display unit 2.

FIG. 2 is a block diagram showing the internal circuit of the apparatus shown in FIG. 1 and related to the present invention.
Reference numeral 0 is a control circuit according to this embodiment including a power saving function, which is configured by a microcomputer or the like. Reference numeral 21 denotes the entire main body of the personal computer including the main body 1 and the display unit 2, and 22 denotes a power-on lamp switch for controlling ON / OFF of the power-on lamp 3.

Next, the operation of the present invention will be described with reference to the flowchart of FIG. At the start, the main body device 21 is energized by pressing the power switch 4 to be in the ON state, the main body device 21 is activated, and the control circuit 20 starts operating. In the next step S1, it is determined whether or not the power saving function is selected. If the power saving function is selected, the process proceeds to step S2, and the control circuit 20 opens the display unit 2 by the detection switch 5. Determine whether or not

When it is determined in step S2 that the display unit 2 is in the closed state, it is not possible to determine whether the main body device 21 is powered on by the backlighting of the display unit 2, so that the power saving mode is set. Regardless of whether or not it proceeds to step S4, the control circuit 20 operates the power-on lamp switch 22 to turn on the power-on lamp 3, and displays that the main body device 21 is powered on.

If it is determined in step S2 that the display unit 2 is in the open state, the process proceeds to step S3.
It is determined whether the display unit 2 is in the backlighting state. That is, it is determined whether or not the power saving mode is set, and when the power saving mode is set, it is not possible to know whether or not the main body device 21 is powered on only by looking at the display unit 2 which is not backlit. , The process proceeds to step S4 and the power-on lamp 3 is turned on, but if the power save mode is not set in step S3, the display unit 2
Back lighting of the main device 21
Since it is clearly understood that the power is turned on, the control circuit 20 operates the power-on lamp switch 22 to turn off the power-on lamp 3 and prevent unnecessary lighting of the power-on lamp 3 to save power consumption. I have decided.

In the above embodiment, a portable personal computer is used as an example of an electronic device having a power saving function, but it goes without saying that this embodiment is not limited to this. ..

[0015]

As described above, in the electronic device of the present invention, when it can be clearly judged from the outside that the power is on, the indicator light indicating that the power is on is turned off. As a result, there is an advantage that wasteful power consumption can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of an apparatus showing an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal circuit related to the present invention in the device shown in FIG.

FIG. 3 is a flowchart showing the operation of the present invention.

FIG. 4 is a perspective view showing the external configuration of a conventional device of this type.

5 is a block diagram showing parts related to the prior art in the device shown in FIG.

[Explanation of symbols]

 1 Main unit 2 Display unit 3 Power-on lamp 4 Power switch 5 Detection switch 20 Control circuit 21 Main unit 22 Power-on lamp switch

Claims (1)

Claim: What is claimed is: 1. An indicator light for indicating to an operator that the main power is on, and an electronic device that is operated by the operator for a predetermined time or more even if the main power is on. If not touched, in an electronic device that has a power saving function that prevents power consumption by shutting off power to the specified part of the electronic device, select whether or not the power saving function is selected and check the status of each part of the electronic device body. Is provided, and a control circuit for controlling ON / OFF of the indicator light based on these results is provided, and while the above-mentioned control circuit makes it possible to externally judge to the operator that the main power is turned on, An electronic device that controls to turn off a lamp.