JPH05173529A - Display device - Google Patents

Abstract

(57) [Summary] [Purpose] Automates the brightness adjustment of the display of personal computers. [Arrangement] An illuminance measuring unit 5 for measuring the illuminance of a setting environment of a display device including the display unit 1 is provided, and illuminance information output by the illuminance measuring unit 5 and a brightness adjusting unit 3 for manual adjustment output. Configured so that the brightness can be adjusted with the brightness information,
The brightness of the display unit 1 is automatically adjusted by learning the relationship between the manually output brightness information and the illuminance information output by the illuminance measuring unit 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device used for personal computers, workstations and the like.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing the structure of a conventional display device. Reference numeral 1 is a CRT or liquid crystal display unit, 2 is a display control unit for controlling the display unit 1, and 3 is a brightness adjusting unit for the operator to adjust the brightness of the display unit 1. It is configured to change the voltage for brightness adjustment by the container. Reference numeral 4 denotes a brightness adjusting unit that adjusts the brightness of the display unit 1 based on the brightness information obtained from the brightness adjusting unit 3.

The conventional display device has the above-described structure, and in order to adjust the brightness of the display unit 1, the operator manually turns the rotary knob of the variable resistor forming the brightness adjusting unit 3. It was done by moving it and changing the voltage.

[0004]

As described above, in the brightness adjustment of the conventional display device, the brightness adjusting section 3 is manually operated. Therefore, when a user inputs a key while looking at the display on a personal computer or the like, he / she must stop the input and operate the knob of the variable resistor of the brightness adjusting section 3, thus reducing the efficiency of the key input. ..

An object of the present invention is to solve the above-mentioned problems and to provide a display device in which the brightness can be easily adjusted.

[0006]

The present invention has the above-mentioned object of providing an illuminance measuring unit for measuring the illuminance of the environment in which the display unit is installed.
The display control unit that controls the display of the display unit, the brightness adjustment unit that manually adjusts the brightness, the brightness adjustment selection unit that selects whether to perform the brightness adjustment of the display unit automatically or manually, and the illuminance measurement unit. The brightness is adjusted by the illuminance information to be output and the brightness information output by the brightness adjusting unit, and when the brightness is automatically adjusted, the brightness information when the brightness is manually adjusted, and the illuminance information output by the illuminance measuring unit at that time This is achieved by a display device including a brightness control unit that adjusts the brightness of the display unit by learning the relationship with

[0007]

According to the above structure, the brightness is automatically measured to the optimum brightness as the display section according to the illuminance information by automatically measuring the environmental illuminance in which the display device is installed. If the adjustment is manually performed as described above, the adjustment data is used as learning data in the case of the above-described automatic adjustment, and the display unit always has a brightness that is easy to see.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the structure of an embodiment of the present invention, wherein the members 1 to 4 are the same as those in FIG.
It is a member having the same or basically the same function as the corresponding reference numeral. An illuminance measuring unit 5 measures the illuminance of the environment in which the display device is installed. For example, cadmium sulfide (CdS) is used as a sensor in the illuminance measuring unit 5, and the illuminance information of its output is input to the brightness control unit 4.
The brightness control unit 4 automatically adjusts the brightness of the display unit 1 only by the brightness information obtained by the operator's manual adjustment or by the brightness information and the illuminance data acquired by learning together with the illuminance measuring unit 5. Reference numeral 6 denotes a brightness adjustment selection unit that selects whether the brightness adjustment is manually or automatically adjusted.

The present embodiment is configured as described above, and as described above, for the brightness adjustment, the illuminance measuring degree 5 constantly measures the brightness around the installation of the display device to generate the illuminance data, and the brightness control unit 4 is provided. Are typing in. The brightness control unit 4 automatically adjusts the brightness by a voltage according to the brightness of the input illuminance data. When the operator adjusts the brightness of the illuminance data using the brightness adjusting knob provided in the brightness adjusting unit 3, the adjustment data is input to the brightness controlling unit 4 as the brightness information, and the brightness is adjusted by the adjusting data. The adjustment data is stored in the storage unit of the brightness control unit 4 for use as learning data for the subsequent brightness adjustment together with the above illuminance data.

Therefore, when the operator manually adjusts the brightness in the brightness control unit 4, the brightness of the display unit 1 can be automatically adjusted based on the current illuminance data and the learning result. .. For the above adjustment, a manual or automatic adjustment method can be selected by the brightness adjustment selection unit 6.

FIG. 2 is a flow chart showing a procedure of the above-mentioned brightness adjustment.

First, after the start,
The illuminance data cd1 measured as voltage is automatically read (S1), and it is determined whether or not it is in the automatic adjustment mode (S1).
2) When the mode is not the automatic adjustment mode, it ends. In the automatic adjustment mode, the illuminance data (cd2) is read (S3), and it is determined whether the difference between the illuminance data cd2 and cd1 exceeds the set value α (S4). Set value α
If it exceeds, the first brightness adjustment is performed (S5), and then the value of cd2 is substituted for cd1 for updating the illuminance data (S6).

If the difference between cd1 and cd2 is smaller than the set value α in the step (S4), it is judged whether or not the brightness adjusting section 3 is manually adjusted (S7). Read the brightness data if you have finished and made manual adjustments.
(S8), the second brightness adjustment is performed based on the brightness data input from the brightness adjusting unit 3 (S9). After that, the following first brightness adjustment learning is performed using the brightness data and the illuminance data cd1 in this case (S10). At that time, if there is learning in the storage unit, the brightness is determined using the data. The learning here means that the brightness when the operator manually adjusts is y and the illuminance of the environment at that time is x, and the relationship between them is approximated by y = F (x) to obtain x, y. It means that the function F (x) that satisfies the above is estimated and the luminance y of the display unit is estimated from the current illuminance x.

[0015]

As described above, according to the present invention, since the brightness can be automatically adjusted according to the illuminance of the environment, the labor for adjusting the brightness can be saved and the key input can be concentrated. In addition, since the manually adjusted brightness information is used for the next brightness adjustment as the learning data, it becomes possible for the same operator to perform key input with the brightness suitable for himself or herself, and it is possible to cope with individual differences in adjustment. Appropriate automatic brightness adjustment is possible.

Therefore, the display has an appropriate brightness all the time, there is no effect that the brightness is too bright with respect to the surrounding brightness, and the power consumption is reduced. The display unit used in a personal computer, a workstation, etc. It is possible to provide an effective display device.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart illustrating the operation of this embodiment.

FIG. 3 is a block diagram illustrating a conventional display unit.

[Explanation of symbols]

1 ... Display unit, 2 ... Display control unit, 3 ... Brightness adjusting unit,
4 ... Luminance control unit, 5 ... Illuminance measurement unit, 6 ... Luminance adjustment selection unit.

Claims (1)

[Claims] 1. An illuminance measuring unit that measures the illuminance of the installation environment of the display unit, a display control unit that controls the display of the display unit, a brightness adjustment unit that manually adjusts the brightness, and a brightness adjustment of the display unit is automatic. Alternatively, a brightness adjustment selection unit for selecting whether to perform manually,
The brightness is adjusted by the brightness information output by the brightness measuring unit and the brightness information output by the brightness adjusting unit, and when the brightness is automatically adjusted, the brightness information when the brightness is manually adjusted, and the brightness measuring unit at that time And a brightness control unit that adjusts the brightness of the display unit by learning the relationship with the illuminance information output by the display device.