KR19990018045U - Screen brightness indicator on the monitor - Google Patents

Abstract

The present invention relates to a display brightness display device of the monitor, the device for displaying the screen brightness of the monitor according to the ambient brightness of the monitor, when the user selects the screen brightness display step and the switch for outputting a switch signal according to the A second microcomputer that receives a switch signal output from the switch and outputs a first gain signal and an OSD message; and a second amplified signal receiving a first gain signal output from the micom according to a gain according to adjustment of a reference screen brightness; It consists of a gain control unit that outputs a gain signal to the video preamplifier so that the brightness of the monitor periphery and the monitor screen are displayed on the OSD screen so that the optimum conditions can be more easily adjusted when adjusting the monitor screen brightness.

Description

Screen brightness indicator on the monitor

The present invention relates to a screen brightness display device of a monitor, and more particularly, to a screen brightness display device to adjust the monitor screen brightness in three steps according to the ambient brightness.

In general, the OSD function is applied to the monitor, and the OSD function displays the current frequency, color coordinates, screen size, and screen status on the monitor screen. This is somewhat different depending on the program setting that controls the OSD function, but most have the same function.

In general, however, most monitors display the environment of the monitor, but there is no function of displaying the relationship between the brightness of the monitor surrounding the human body and the screen brightness of the monitor. Therefore, as the user adjusts the screen brightness using a variable adjustment of contrast / brightness attached to the outside of the monitor at random, the human body may be inconsistent due to the inconsistency between the brightness of the monitor screen and the brightness displayed at the adjusted value. There is a problem that adversely affects, and also can not adjust the appropriate brightness objectively.

Accordingly, the present invention provides a screen brightness display device that enables the user to more easily adjust the brightness of the monitor by setting and optimizing the reference for the brightness of the monitor and its surroundings on the OSD screen of the monitor in order to solve the above problems. For the purpose.

The present invention for achieving the above object, in the device for displaying the screen brightness of the monitor according to the ambient brightness of the monitor, a switch for outputting a switch signal according to the selection of the screen brightness display by the user, and the switch A microcomputer receiving a switch signal output from the microcomputer and outputting a first gain signal and an OSD message, and receiving a first gain signal output from the microcomputer and a second gain signal amplified according to a gain according to adjustment of a reference screen brightness. It is characterized by consisting of a gain control unit for outputting the video preamp.

1 is a circuit diagram of a monitor to which a screen brightness display device according to the present invention is applied;

2 is a table showing the relationship between the brightness of the screen of the monitor and its surroundings,

3 is a front view of a monitor in which screen brightness is displayed on an OSD screen according to the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the screen brightness display device of the present invention applies a switch SW for outputting a switch signal according to the user selecting a step of screen brightness display and a switch signal output from the switch SW. Receives the first gain signal and the OSD message, and receives the first gain signal output from the microcomputer 11 to amplify the second gain signal according to the gain according to the adjustment to the reference screen brightness. Receiving a gain control unit 12 and a second gain signal output from the gain control unit 12, and amplifying the first video signal received from the video card (not shown) according to the applied second gain signal. Selects a video preamplifier 13 for outputting a second video signal, a second video signal output from the video preamplifier 13 and an OS video signal output from the microcomputer 11. Consists of a switch element 14, the switching element 14, the main video amplifier 15 which amplifies the signal to a sufficient level that is selected is output from the output.

Looking at the present invention having such a configuration in more detail as follows.

First, the microcomputer 11 detects a key signal selected and applied from the switch SW. The key signal is separated into three stages in succession, and when three consecutive stages are executed, the key signal is returned to the first stage. That is, as the switch SW is pressed three times in succession, the microcomputer 11 generates DC 1 to 3 V in the level of the first gain signal.

For example, if the switch SW is selected twice in succession, the microcomputer 11 outputs the level of the first gain signal to DC 2V. When the first gain signal having the level of DC 2V is output from the microcomputer 11, it is applied by the gain control unit 12 through the resistor R1. The gain adjusting unit 12 receiving the first gain signal receives a gain through the amplifier AMP according to the reference voltage value generated at the reference voltage terminal 12a including the resistor R2 and the first variable resistor VR1. Amplify and output. In this case, although only the OSD R signal is described among the OSD video signals, the remaining OSD G and OSD B may be configured with the same circuit as the OSD R.

The first gain signal amplified by the amplifier AMP is further adjusted according to the gain set in the contrast control stage 12b composed of the second variable resistor VR2 to output the second gain signal through the resistors R3 and R4. do. The second gain signal is again applied through the contrast terminal CONT of the video preamplifier 13 to amplify the video signal applied from the outside to a predetermined level according to the applied second gain signal, thereby outputting the output terminal OUT and the resistor ( It is applied to the base end of the transistor Q1 of the switch element 14 through R5). At this time, the emitter terminal of the transistor Q1 receives the OSD video signal output from the microcomputer 11 through the diode D and the resistor R11.

The video signal and the OSD video signal applied to the base end and the emitter end of the transistor Q1 of the switch element 14 are respectively selected according to the case of the video signal and the blanking level applied to the base end to the video main amplifier 15. Is approved. In other words, if the video signal applied to the base and the blanking level are not at the blanking level, the video signal amplified according to the second gain signal is output from the video preamplifier 13, and if it is not the blanking level, the OSD video signal output from the microcomputer 11 is selected. Will print.

The video signal or the OSD video signal selected by the switch element 14 is sufficiently amplified by the video main amplifier 15 according to the selection of the transistor Q1 and displayed on the monitor screen. At this time, when the OSD video signal is displayed by the switch element 14, the brightness around the monitor and the brightness of the monitor screen are divided into three stages as shown in FIG. 2 according to the selection of the switch SW. In addition, the display of the monitor ambient brightness and the monitor screen brightness shown in FIG. 2 displays the optimum condition of the ambient brightness of the current monitor and the brightness of the monitor according to the selection of the switch SW as shown in FIG. 3.

As described above, the present invention provides an effect of more easily adjusting the optimum condition when adjusting the brightness of the monitor by displaying the brightness of the monitor periphery and the monitor screen on the OSD screen.

Claims (2)

In a device for displaying the screen brightness of the monitor according to the ambient brightness of the monitor, A switch for outputting a switch signal according to the user selecting a screen brightness display step; A microcomputer receiving the switch signal output from the switch and outputting a first gain signal and an OSD message; And a gain adjuster configured to receive a first gain signal output from the microcomputer and output a second gain signal amplified according to a gain according to adjustment to a reference screen brightness to a video preamplifier. Device. The method of claim 1, The gain control unit, A reference voltage stage for generating a reference voltage and adjusting a gain of the generated reference voltage; An amplifier for amplifying and outputting a first gain signal output from the micom according to a reference voltage gain value output from the reference voltage terminal; And a contrast control stage configured to adjust a gain level of the first gain signal amplified and output from the amplifier.