KR20010064132A - Apparatus for detecting and displaying image data in plasma display panel device - Google Patents

Abstract

PURPOSE: An apparatus for detecting image data in a plasma display panel apparatus is provided to facilitate a test for the plasma display panel apparatus by detecting image data displayed on the plasma display panel. CONSTITUTION: The apparatus for detecting image data in a plasma display panel apparatus includes the first and second counting parts(100,110,120,130), a comparing part(140), a logic circuit(150), a control circuit(160) and a display circuit(170). The first counting part(100,110) counts X and Y position values in response to a cursor signal. The second counting part(120,130) counts clock and blanking signals, respectively. The comparing part(140) compares the X and Y position values with the clock and blanking signals. The logic circuit(150) outputs R, G and B data according to the comparison results and the control circuit(160) outputs a control signal to the display circuit(170) corresponding to the comparison results, such that the R, G and B data are displayed on an OSD.

Description

Image data detection display device in plasma display panel device {APPARATUS FOR DETECTING AND DISPLAYING IMAGE DATA IN PLASMA DISPLAY PANEL DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel apparatus, and more particularly, to an apparatus for facilitating error correction by detecting and displaying error image data due to pseudo contours and the like on a screen when a plasma display panel apparatus is tested.

In general, a logic analyzer is frequently used to check data displayed on a screen of a plasma display panel device. In this case, the position of the displayed data on the screen is visually determined by a tester, and then a video source is used. Image data was confirmed by passing the time to acquire the data by calculating with the format to be delivered to the logic analyzer.

For example, the tester judges the data displayed on the screen to be the 9th pixel from the left and the 5th pixel from the top of the screen, and the 5th blank signal and the 9th after the blank signal with the logic analyzer. When signaled to acquire data, the logic analyzer could confirm the image data displayed through the pixel at the corresponding position.

However, the above-described method cannot find the image data of the exact pixel position to be checked due to the measurement error generated by the human eye, and checks the pixel position one by one through the human eye to perform the logic analysis. There is a problem in that the time required for data verification increases because it must be delivered to the riser.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and when the plasma display panel device is tested, a cursor for knowing the exact position on the screen without a separate device is displayed, and image data of the pixel where the cursor is located is displayed in OSD ( It is an object of the present invention to provide an image data detection and display device in a plasma display panel device that can be displayed on a screen by On Screen Display, and thus it is possible to more easily detect error image data due to pseudo contours or the like. .

1 is a block diagram of an image data detection and display device according to an embodiment of the present invention;

* Description of the main parts of the drawing

100: Cursor X Counter 110: Cursor Y Counter

120: clock counter 130: blank signal counter

140: comparator 150: OR logic unit

160: OSD control unit 170: OSD integrated circuit

In order to achieve the above object, the present invention provides a device for detecting and displaying image data during a test in a plasma display panel device, the X position value and the Y position value of the current cursor in response to a cursor movement signal applied from the outside, respectively. First counting means for counting by decreasing or increasing; Second counting means for counting a display clock signal and a blank signal to determine a location of currently incoming image data; Comparing the X position value of the current cursor output from the first counting means and the count value of the display clock signal output from the second counting means, and the Y position value of the current cursor output from the first counting means and the Comparison means for comparing a count value of the blank signal output from the second counting means; A logic for outputting R / G / B data including a cursor by logically combining the comparison value output from the comparison means and the currently input original R (Red) / G (Green) / B (Blue) image data. Circuit section; An on-screen for receiving a comparison value output from the comparing means and the current incoming raw R / G / B image data and outputting a control signal to display the image data as on-screen display characters on the screen in response to the comparison value Display control circuitry; And an on screen display integrated circuit unit for displaying an on screen display character on a screen in response to a control signal from the on screen display control circuit unit.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention. do.

1 is a block diagram of an image data detection and display device according to an embodiment of the present invention.

As shown in the figure, the present invention is a cursor X counter 100 for counting by decrementing or increasing the X position value and the Y position value of the current cursor in response to the input of a cursor movement signal for moving the cursor position from the outside, respectively. And the cursor Y counter 110, a clock counter 120 and a blank signal counter 130 each counting a display clock signal Dclock and a blank signal to determine the position of the current incoming image data, and the cursor X The X position value of the current cursor output from the counter 100 and the count value of the display clock signal Dclock output from the clock counter 120 are compared, and the Y position of the current cursor output from the cursor Y counter 110. Value and the count value of the blank signal output from the blank signal counter 130 to compare and compare the value of "high" when they match each other. The interrogator 140 and the comparison value output from the comparator 140 and the original incoming R / G / B image data are received and logically combined, and the comparison value from the comparator 140 is " high " OR logic unit 150 for outputting R / G / B data including a cursor that displays a cursor in white, and a comparison value output from the comparator 140 and the original incoming R / G / B image data. An OSD control unit 160 for outputting a control signal for displaying the image data as OSD characters on the screen when the comparison value is "high", and in response to a control signal from the OSD control unit 160; And an OSD integrated circuit 170 for outputting OSD data for displaying OSD characters.

The operation of the present invention configured as described above will be described in detail below.

First, when the cursor movement signal is applied to check the error image data during the test, the cursor X counter 100 and the cursor Y counter 110 respond to the cursor movement signal to the X position value and Y of the previously stored cursor. Increase or decrease the position value. At this time, the clock counter 120 and the blank signal counter 130 continue to count the positions of the image data currently being received.

The comparator 140 compares the X position value of the cursor output from the cursor X counter 100 with the value of the clock counter 120, and the Y position value of the cursor output from the cursor Y counter 100 and the blank signal counter ( By comparing the value of 130, it is determined whether or not the same between the current incoming image data and the position of the error image data to be checked. At this time, the comparator 140 outputs a comparison value of "low" when they are not the same, and outputs a comparison value of "high" when they are the same.

When the comparison value of "high" is output from the comparator 140 (that is, when the position of the currently input image data and the position of the error image data to be checked are the same), the OR logic unit 150 performs an OR operation. By outputting all of the R / G / B data as R / G / B data having a "high" value, the cursor located on the screen is displayed in white, and the OSD control unit 160 displays the "high" from the comparator 140. In response to the comparison value, a control signal for displaying the original R / G / B data as OSD characters on the screen is output, and the R / G / B value of the error image data is displayed on the actual screen through the OSD integrated circuit 170. Will be displayed.

On the other hand, when a comparison value of "low" is output from the comparator 140 (that is, when the position of the currently input image data and the position of the error image data to be checked are not the same), the OR logic unit 150 performs the OR operation. By outputting the original R / G / B data as R / G / B data including a cursor as it is, the original R / G / B data is displayed on the screen as it is. At this time, the OSD control unit 160 does not output a control signal to display the raw R / G / B data as OSD characters on the screen in response to the comparison value of "low" from the comparator 140, the image on the screen R / G / B value of data is not displayed.

On the other hand, in the above description of the present invention, the image data to be checked is limited to the error image data, but it is not the actual error image data, but the tester wants to check arbitrary image data for reasons such as image quality improvement. Likewise, the value can be checked directly through the OSD text on the screen.

Although the technical idea of the present invention has been described in detail according to the above preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

According to the present invention made as described above, by displaying a cursor that can know the exact position on the screen during the test of the plasma display panel device, and by displaying the image data of the pixel where the cursor is located on the screen by the OSD, The error image data or any image data to be checked can be simply detected without a separate device, thereby facilitating the test of the plasma display panel device.

Claims (3)

An apparatus for detecting and displaying image data during a test in a plasma display panel device, First counting means for counting by decreasing or increasing the X position value and the Y position value of the current cursor in response to a cursor movement signal applied from the outside; Second counting means for counting a display clock signal and a blank signal to determine a location of currently incoming image data; Comparing the X position value of the current cursor output from the first counting means and the count value of the display clock signal output from the second counting means, and the Y position value of the current cursor output from the first counting means and the Comparison means for comparing a count value of the blank signal output from the second counting means; A logic for outputting R / G / B data including a cursor by logically combining the comparison value output from the comparison means and the currently input original R (Red) / G (Green) / B (Blue) image data. Circuit section; An on-screen for receiving a comparison value output from the comparing means and the current incoming raw R / G / B image data and outputting a control signal to display the image data as on-screen display characters on the screen in response to the comparison value Display control circuitry; And An on screen display integrated circuit unit displaying an on screen display character on a screen in response to a control signal from the on screen display control circuit unit And an image data detection and display device in the plasma display panel device. The method of claim 1, wherein the comparison means, The X position value of the current cursor output from the first counting means and the count value of the display clock signal output from the second counting means are the same, and the Y position value of the current cursor output from the first counting means and the And a comparison value of "high" is output when the count value of the blank signal output from the second counting means is the same, characterized in that the image data detection display device in the plasma display panel device. The method of claim 2, wherein the logic circuit portion, And a logical sum means for receiving and comparing the comparison value and the raw R / G / B image data output from the comparing means, When the comparison value of "high" is output from the comparison means, all of the R / G / B data including the cursor are output as "high" so that the cursor is displayed in white on the screen. An image data detection display device in a display panel device.