JPH05137164A - Elapse time display device for video monitor - Google Patents

Abstract

PURPOSE:To provide a device where the elapse time of a video monitor is displayed on a video monitor display part. CONSTITUTION:When a display instruction is inputted to a microcomputer 1 incorporated in the video monitor, bar display and time display are outputted and are mixed with the output of an RGB decoder 3 and are superimposed on a monitor picture 4 to display the elapse time. When a power-off instruction is inputted, time data counted in time units by a counter of the microcomputer 1 only at the time of using a device is written in a memory 5. When a power-on instruction is inputted again, time data is read in from the memory 5, and the elapse time is added, and the elapse time is displayed again on the picture 4 based on the time resulting from this addition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elapsed time display device for a video monitor.

[0002]

2. Description of the Related Art Conventionally, in order to measure the elapsed time of a commercial video monitor, know the life of the video monitor, and use it as a guide for maintenance and replacement, it is necessary to use a mercury-based elapsed time meter or an LCD clock. I used a digitally displayed elapsed time meter by soldering it to the board. The former is small and inexpensive, but in recent years its manufacturer tends to not use mercury and it will be difficult to obtain it in the future, while the latter can accurately display the elapsed time, but it is expensive and has a large shape, so it is a backup. Button battery is required for.

[0003]

DISCLOSURE OF THE INVENTION The present invention utilizes the display section of a video monitor equipped with a microcomputer used for channel selection, etc., without using the above-mentioned mercury elapsed time meter, etc. The point is to provide an elapsed time display device for displaying.

[0004]

The present invention is characterized in that a counter is operated by utilizing a built-in microcomputer to measure an elapsed time, and the elapsed time is displayed on a monitor screen as needed. To do.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a partial block circuit inside a monitor of the device of the present invention. In this block circuit,
The microcomputer 1 uses the hue of the RGB decoder 3,
In addition to controlling the brightness and the like, when a "display" command is input to the microcomputer 1, a bar display and a time display are output from the microcomputer 1, and the video signal input from the video input terminal 2 is output by the RGB decoder 3. R, G, B
The output decoded in step S6 is mixed with, for example, G in the mixing section 6.
The mixed signal is displayed on the screen of the monitor such as the liquid crystal display panel 4 in a superimposed manner with the bar display 7 and the time display 8 shown in FIG. Note that ETI means the display of elapsed time.

In the time display shown in FIG. 2, the bar display 7 moves to the left with the lapse of time, and further, the time display 8 is displayed in the upper right on an hourly basis. FIG. 3 shows an example of correspondence between the time and the bar display at that time. In the case of the examples shown in FIGS. 2 and 3, the maximum time is 10,000 hours, but the program can be programmed as necessary even for 20,000 hours or 30,000 hours.

"Power off" for microcomputer 1
When the command is input, the time (count value) data counted in the time unit only when the counter of the monitor microcomputer is using the device (ON state) is written in the memory 5 such as a non-volatile memory. When the "power-on" command is input to the microcomputer 1 again, it is read from the memory 5 and the time (count value) is added. The elapsed time is again displayed on the liquid crystal display panel 4 based on the added time.

Next, when a "reset" command is input to the microcomputer 1, the bar display 7 is set to the left to change to the 0 hour display, and further the time display 8 at the upper right of the screen.
Is changed to “0H”. However, this "reset" command is used when maintenance of the monitor is performed and it is desired to count the usage time from 0 hours again.

FIG. 4 shows a flow chart of an instruction inputted to the microcomputer 1, and FIG. 4 (A) shows that the "power-on" or "reset" instruction is inputted to the microcomputer 1. 4B is a flowchart when the "power off" command is input.

[0010]

According to the present invention, most of the current monitors are equipped with a microcomputer,
By inserting the elapsed time display program when the microcomputer is manufactured, the elapsed time can be easily measured and displayed. Also, although it cannot be reset normally,
It can be reset by giving a reset command to the microcomputer.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of the present invention.

FIG. 2 is a diagram showing an example in which elapsed time is displayed on a display panel.

FIG. 3 is a diagram showing an example of correspondence between elapsed time and bar display.

FIG. 4 is an example of a flowchart of the operation of the present invention.

[Explanation of symbols]

1. Microcomputer 3. RGB decoder
4 ... Display panel 5 ... Memory 6 ... Elapsed time display signal / Decoder output signal mixing section

Claims (1)

[Claims] 1. An elapsed time display device for a video monitor, characterized in that a counter is operated by using a built-in microcomputer to measure the elapsed time and display the elapsed time on a screen.