JPH01304493A - Crt monitor device - Google Patents

Abstract

PURPOSE:To obtain a CRT monitor device whose screen display is easily adjusted by providing a test pattern generating means. CONSTITUTION:A pattern generator 1 sends initial information 106 from an initial value setting circuit 12 to a nonvolatile image memory 13 in response to the reset signal 105 of a switching circuit 2. A controller 1 is initialized and sends a display address signal 107 to a nonvolatile image memory 13 in order and a test synchronizing signal 108 to the switching circuit 2. Pattern information 109 is read out of a memory 13 in order and sent as a series test video signal 110 to the switching circuit 2 through a parallel-series converting circuit 14. The switching circuit 2 switches an external video signal 101, an external synchronizing signal 102, a test video signal 110, and a synchronizing signal 108 and the signals 110 and 108 are sent as a video signal 103 and a synchronizing signal to a CRT display part 3 to display a test pattern. At the end of screen adjustment, the switching circuit 2 switches the signals 101 and 102 and displays an external pattern on the CRT. The stored test pattern is read out to make an adjustment, so the adjusting operation is easy and the constitution is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a CRT monitor, and more particularly to a method for adjusting the screen display of a CRT monitor in a workstation.

Previously, this type of CRT monitor device had a configuration in which a test pattern signal generated by a test pattern generator, etc. was input from the outside, and the screen display was adjusted using this test pattern signal. .

In such conventional CRT monitor devices, the screen display was adjusted using test pattern signals from the outside, so when adjusting the screen display, it is necessary to use a measuring device such as a test pattern generator that generates test pattern signals. The disadvantage is that you have to prepare.

Purpose of the Invention The present invention has been made to eliminate the drawbacks of the conventional products as described in 1.The present invention provides a CRT that allows easy adjustment of screen display without the need for a measuring device such as a test pattern generator. The purpose is to provide monitoring equipment.

Structure of the Invention A CRT monitor device according to the present invention is a CRT monitor device having a display means for displaying a video signal from the outside, and a des1-pattern generation device for generating a test pattern signal for adjusting the screen display in the display means. It is characterized by having a means.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the JJA configuration of an embodiment of the present invention. In FIG. 0, a CRT monitor device according to an embodiment of the present invention includes a pattern generator 1, a switching circuit 2,
and a CR'l' display section 3.

The pattern generator 1 controls the generation of test patterns (the CRT controller 11 and the initial data 106 for setting the horizontal display dot number data, the vertical display dot number data, and the start address required by the CRT controller 11). A value setting circuit 12, a non-volatile image memory 13 in which pattern data 109 of the display address specified by the display address signal 107 from the CRT controller 11 are successively output in parallel h6, and output from the non-volatile image memory 13 in parallel. pattern data 1
09 into a serial test video signal 110 and outputs the same.

A switching circuit 2 switches between an external video signal 101 and an external synchronization signal 102 and a test video signal 110 and a test synchronization signal 108 from the pattern generator 1, and outputs them to the CRT display unit 3 as a video signal 103 and a synchronization signal 104. . Further, when switching circuit 2 switches external video signal 101 and external synchronization signal 102 to test video (gt signal 110 and test synchronization signal 108),
A reset signal 105 is output to the pattern generator 1.

The CR, T display section 3 displays the video signal 103 from the switching circuit 2.
A pattern from the outside or a test pattern from the pattern generator 1 is displayed using the synchronization signal 104.

Next, the operation of one embodiment of the present invention will be explained using FIG.

In a CRT monitor device according to an embodiment of the present invention,
Normally, the external video signal 101 and the external synchronization signal 102 are selected by the switching circuit 2.
1 and an external synchronization signal 102, an external pattern is displayed on the CR7 display section 3.

When adjusting the image of this CRT monitor device, switching circuit 2
External video signal 101 and external synchronization signal 102
and test video signal 11 from pattern generator 1
0 and the test synchronization signal 108 are performed, and the switching circuit 2 outputs the reset signal 105 to the pattern generator 1.

In the pattern generator 1, when the initial value setting circuit 12 receives the glue signal 105 from the switching circuit 2, the initial value setting circuit 12 sends horizontal display data to the CRT controller 11, vertical display data to the number data, and initial data 106 such as a start address.

The CRT controller 11 is initialized by the initial data 106 from the initial value setting circuit 12, and receives the display address signal 1.
07 to the nonvolatile image memory 13 one after another, and a test synchronization signal 108 to the switching circuit 2.

In the nonvolatile image memory 13, the pattern data 10 is stored in response to the display address signal 107 from the CRT controller 11.
9 are read out in parallel, and this pattern data 109 is sent to the parallel-to-serial conversion circuit 14 for the 111th time.

The parallel-to-serial conversion circuit 14 receives parallel pattern data 109 sent from the nonvolatile image memory 13 every 1ft.
is converted into a serial host 1 to video signal 110 and sent to the switching circuit 2.

In the switching circuit 2, the external video signal 101 and the external 1υ
1 signal 102, the test video signal 110 from the pattern generator 1, and the desl-synchronization signal 108. Therefore, these test video signal 110 and test synchronization signal 108 are displayed as the video signal 103 and synchronization signal 104 on the CR7 display section. Sent on 3rd.

The test pattern from the pattern generator 1 is displayed on the CRT display section 3 using the test video signal 110 and the test synchronization signal 108.

C by the test pattern from pattern generator 1
When the image adjustment of the RT' monitor device is completed, the switching circuit 2 operates to switch between the test video signal 110 and test synchronization signal 108 from the pattern generator 1 and the external video signal 101 and external synchronization signal 102, and the CR7 display is performed. In section 3, a pattern from the outside is displayed using an external video signal 101 and an external synchronization signal 102.

In this way, when adjusting the image of the CRT monitor device, the test I for screen display adjustment stored in the non-volatile image memory 13 is used.
- By reading the pattern information and displaying it on the CR, T display section 3, it is possible to easily adjust the screen display without preparing a measuring device such as a test pattern generator.

Furthermore, by storing test pattern information for screen display adjustment in the nonvolatile image memory 13, the pattern generator 1 can be easily and compactly incorporated into a CRT monitor device.

As explained above, according to the present invention, by providing a test pattern generating means for generating a test pattern signal for adjusting the screen display unit 1 in the display means for displaying a video signal from the outside, This has the advantage that screen display can be easily adjusted without preparing a measuring device such as a test pattern generator.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. Description of symbols of main parts 1... Pattern generator 2... Switching circuit 3... CRT display section 11... CRT controller 12... Initial value setting circuit 13...Nonvolatile image memory 14...Parallel-serial conversion circuit

Claims (1)

[Claims] (1) A CRT monitor device having a display means for displaying a video signal from the outside, characterized in that it is provided with a test pattern generating means for generating a test pattern signal for adjusting the screen display in the display means. Monitor device.