JPH0686194A - Brightness adjusting device of display - Google Patents

Abstract

PURPOSE:To the facilitate the brightness adjusting operation and the fine adjustment of a display and to efficiently use space by reducing the installation area of an adjusting operation unit. CONSTITUTION:This device is provided with pushing buttons 6a, 6b, 7a, 7b for actuating an output level variable circuit for adjustment by a pushing operation for the brightness adjusting of displays such as a cathod-ray tube and a liquid crystal, etc. By the pushing operation, the output level variable circuit is controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display brightness adjusting device for adjusting brightness of contrast and brightness in a display such as a cathode ray tube and a liquid crystal in electronic equipment such as a television, a computer and a word processor.

[0002]

2. Description of the Related Art Conventionally, as an electronic device as described above,
For example, in the portable personal computer 21 as shown in FIG. 7, the contrast and the brightness of the display 24 that can be raised and lowered and can be raised in a tilted state with respect to the input surface on which the keyboard 23 is provided are adjusted on one side of the display 24. By rotating the rotary knobs 26 and 27 provided on the
This is done by rotating a variable resistor for adjustment and changing its resistance value.

[0003]

The rotary shaft for changing the resistance value of such a variable resistor is directly rotated by the rotary knobs 26 and 2.
Since it is rotated by 7, the structure is extremely simple, but if the diameter of the rotary knobs 26, 27 is too small,
It is difficult to finely adjust the rotation angle of the rotary shaft of the variable resistor.

In order to finely and easily adjust this, it is necessary to increase the diameter of the rotary knobs 26 and 27. In this case, the area occupied by the rotary knobs 26 and 27 becomes large, An electronic device with a large number of knobs and keys has a drawback that area efficiency becomes poor.

Further, in order to operate the rotary knobs 26 and 27 so that the display 24 has an appropriate brightness, it is necessary to perform the operation with two fingers, which is a disadvantage that the operation is difficult to perform.

The present invention is to solve the above-mentioned problems of the brightness adjusting device for a display in a conventional electronic device, and facilitates the operation and reduces the installation area of the adjusting and operating device, thereby improving the space efficiency. The purpose is to achieve

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a push button for activating brightness adjustment of a display such as a cathode ray tube or a liquid crystal by pressing an output level variable circuit for adjustment. Is provided, and the output level variable circuit is controlled by its pushing operation. Further, the variable output level circuit is configured to be controlled by the pressing operation of the input key provided in the keyboard input device.

[0008]

In the brightness adjusting device for a display of the present invention, the output level variable circuit is operated to the side where the variable value becomes large or the side where the variable value becomes small by selecting the push button or the pressing side of the push button. The brightness of the display can be adjusted by controlling the output level variable circuit by the pushing operation. Further, the output level variable circuit can be operated by an input key provided on the keyboard input device.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to FIG. In addition, in the present embodiment, an example in which the present invention is applied to a portable personal computer (laptop personal computer, notebook personal computer, etc.) will be described. However, the present invention is not limited to this, and other electronic devices can be used. Of course, it can be widely applied.

FIG. 1 is a perspective view of a portable personal computer 1 to which an embodiment of the present invention is applied, 2 is a keyboard input device provided with an input key 3, and 4 is this keyboard input device 2.
In contrast, it is a display that can be undulated and can stand in a tilted state. Reference numeral 5 is a brightness adjusting device, 6a and 6b are push buttons for contrast adjustment, and 7a and 7b are push buttons for bright adjustment. The push buttons 6a and 6b and the push buttons 7a and 7b in FIGS. 2 and 3 are provided in the vicinity as a pair, and one push button 6a and 7a is provided.
Arrows 8a and 9a face upwards, and the other push button 6
Arrows 8b and 9b are drawn downward on b and 7b. And, these push buttons 6a, 6b, 7a, 7
Switches (SW) are provided on the lower side of b, respectively, and these switches (SW) are connected to an output level variable circuit (not shown) for brightness adjustment.

Therefore, if the push button 6a or 7a in which the upward arrow 8a or 9a is drawn is pressed, the output level variable circuit controls so that the screen of the display becomes bright, and conversely, the downward arrow 8b or 9b is displayed. When the push button 6b or 7b depicted is pressed, the output level variable circuit is controlled so that the display screen becomes darker.

The push buttons 6a / 6b / 7a
/ 7b is pressed, the switch (SW) is turned on and the output level variable circuit continues its output, and the screen of the display continues to increase in brightness or darkness, but the push button 6a / If the pushing operation of 6b / 7a / 7b is stopped, the switch is turned off and the output level variable circuit stops the output.

Therefore, the brightness of the screen of the display is maintained at the brightness at the time of stopping (stopping pushing) the operation, and the brightness of the display can be adjusted more finely. It is easier to perform compared to picking, and in terms of operation, only the installation of the push buttons 6a, 6b, 7a, 7b is sufficient, so the installation area can be made smaller and thinner than conventional. Further, there is an advantage that the push buttons 1 and 2 can be operated with one finger.

Although a preferred embodiment of the present invention has been described in detail above, the present invention is not limited to this, and it is obvious that various modifications can be made without departing from the scope of the present invention. Is. For example, in the second embodiment shown in FIGS. 4 and 5, the seesaw type switches 10 and 11 are used as push buttons, and an upward arrow 1 is provided on the upper side thereof.
2a and 13a are downward arrows 12b and 1
3b is depicted, and these switches 10 and 11
The same control as in the previous embodiment is performed by pressing the upper side or the lower side of the display, and the brightness of the display screen can be adjusted.

Further, in the third embodiment shown in FIG. 6, the brightness can be adjusted by the input keys 3 of the keyboard input device 2. For example, the function key 15 of Fn display is pressed to change the mode. After that, the brightness can be adjusted by pressing the input key 3a or 3b for contrast adjustment or the input key 3c or 3d for bride adjustment. Therefore, in this embodiment, the input keys 3 of the keyboard input device 2 (in this case, 3a, 3b,
3c, 3d) also has an advantage that a dedicated adjusting device can be eliminated.

As described above, according to this embodiment, the brightness of the display screen is adjusted to be brighter or darker, and the display screen can be adjusted to the brightness at the time when the operation is stopped.

Therefore, since the operation of the push button can be ergonomically represented by the direction of the arrow drawn on the push button, the direction of the operation can be set correctly and the brightness can be set. Since the push button operation can be stopped by an ergonomic operation, it is easier to set the brightness than the conventional rotary knob.

[0018]

As described above, according to the present invention, the brightness of the display is adjusted by selecting the push side of the push button.
Compared with conventional rotary knobs, fine adjustment is possible and the installation area of the push button can be reduced, so that the operation surface can be effectively used and the operation can be performed with one finger. is there. Further, if the brightness can be adjusted by the input key of the keyboard input device, there is an advantage that a dedicated adjusting device can be omitted.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a portable personal computer to which a first embodiment of the present invention has been applied.

FIG. 2 is a front view of the brightness adjusting device in FIG.

FIG. 3 is a configuration diagram showing a main part of the brightness adjusting device in FIG.

FIG. 4 is a front view of a brightness adjusting device according to a second embodiment of the present invention.

5 is a configuration diagram showing a main part of the brightness adjusting device in FIG.

FIG. 6 is a plan view showing a third embodiment of the present invention.

FIG. 7 is an overall perspective view of a portable personal computer including a conventional brightness adjusting device.

[Explanation of symbols]

 2 keyboard input device 3 input keys 3a, 3b contrast adjustment input keys 3c, 3d bright adjustment input key 5 brightness adjustment 6a, 6b contrast adjustment push button 7a, 7b bright adjustment push button SW switch

Claims (2)

[Claims] 1. A push button for operating a brightness adjustment of a display such as a cathode ray tube and a liquid crystal by a push operation of an output level variable circuit for adjustment, and controlling the output level variable circuit by the push operation. A display brightness adjusting device having the above structure. 2. The brightness adjusting device for a display according to claim 1, wherein the output level variable circuit is configured to be controlled by a pressing operation of an input key provided in a keyboard input device.