KR100274430B1 - Examination apparatus and method for osd of automatic investigator - Google Patents

Abstract

The disclosed invention compares the screen information extracted from the OSD output screen of the image display apparatus photographed by the CCD imager with the brightness and coordinate information of the reference information stored in the memory to recognize and examine pure OSD characters. It relates to a character inspection apparatus and an inspection method.

According to the present invention, a screen of an image display device displaying an OSD character to be tested is imaged through a CCD imager, the image is obtained by a set size from the imaged screen, and compared with reference information set in a memory. It is to examine the OSD characters displayed on the screen of the image display device by correcting the gain and coordinate information of the screen captured by the device.

Accordingly, the present invention enables the OSD character inspection on the inspection pattern of the image display device, the luminance and the position correction of the image display device can be corrected, and the efficiency is increased as well as the measurement of the bit map method. It is possible to provide the effect that unmanned inspection is possible at the time of shipment inspection of image display equipment.

Description

OSD character inspection device and inspection method of automatic shipping machine

The present invention relates to an OSD character inspection apparatus and an inspection method of a shipping automatic inspector, and more particularly, brightness and coordinates of screen information extracted from an OSD output screen of an image display apparatus photographed through a CCD imager and stored in memory. The present invention relates to an OSD character inspection device and an inspection method of a factory automatic inspection machine for recognizing and inspecting pure OSD characters by comparing information.

Conventionally, in the method of checking an OSD character, first, an area in which an OSD character is displayed with respect to a reference screen input to an image display device is captured by a CCD imager, read from the beginning, and stored in a memory. The screen displayed on the set for testing the OSD characters is then captured by the CCD imager to read the same area from the beginning.

The reading is then compared with the reference information stored in the memory, and if it matches, it is determined that normal OSD characters are displayed in the set. However, as described above, only the luminance and the RGB signal of the displayed screen are stored in the information stored in the memory.

However, when the OSD character is inspected according to the prior art as described above, in screens in which the background color or the brightness of the pattern is varied in checking the image display device, the ON SCREEN brightness or the character information matches the gray level of the pattern. There is a problem in that the displayed OSD characters cannot be correctly recognized as characters because the selected text is stored as a picture of the displayed screen.

On the other hand, according to the prior art, the adjustment items are displayed on the screen of the video display device using OSD characters, and in order to adjust the function, the operator is provided in the control board for adjusting each function of the video display device. Arrow keys were used. For example, a case where the contrast of the video display device is to be adjusted will be described below.

First, when an operator selects a menu called "image quality" by using an arrow key on a menu screen, a sub menu indicating a plurality of functions included in image quality is displayed on the screen. When the submenu is displayed, the operator uses the arrow keys to move the cursor to "contrast" and select the contrast.

Then, the currently set value for adjusting the contrast is displayed on the screen in the form of a bar, and the operator adjusts the contrast of the image display device by using the arrow keys to up or down the bar. There is a problem that there is a hassle that must be selected by using the arrow keys every time the function is adjusted.

Accordingly, an object of the present invention is to compare the screen information extracted from the OSD output screen of the image display apparatus photographed by the CCD imager with the brightness and coordinate information of the reference information stored in the memory to obtain the pure OSD characters The present invention provides an OSD character inspection apparatus and inspection method of a shipping automatic inspector for recognition and inspection.

1 is a schematic block diagram for explaining the configuration of the OSD character inspection apparatus of the automatic shipping machine according to the present invention;

2 is a flowchart illustrating an OSD character checking method of an automated shipping machine according to the present invention;

3 is an operation flowchart for explaining a method for adjusting an image display device using the OSD character checked by the present invention.

* Description of Signs of Main Parts of Drawings *

10: pattern generator 20: video display device

30: CCD imager 40: image processing unit

50: computer body

In the OSD character inspection apparatus and inspection method of the automatic shipment inspection machine according to the present invention for achieving the above object, the present invention is to capture the screen of the image display device displayed to test the OSD character through the CCD imager, It acquires as much as the set size from the screen and compares it with the reference information set in the memory, and corrects the gain and coordinate information of the screen captured by the CCD imager according to the result of the comparison and examines the OSD characters displayed on the screen of the image display device. It is characterized in that it is intended to.

In addition, the method for adjusting each function of the video display device using the OSD character according to the present invention, if the operator inputs the adjustment item of the image display device by using the OSD character is stored through the OSD character and learning input as the adjustment item Compared and judged with the OSD character, and if the same OSD character is extracted as a result of comparison and judgment, if it is determined that it is an adjustment item, it is necessary to adjust the video display device while raising or lowering the adjustment value of the adjustment item according to the adjustment value input by the operator. It is characterized by.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram for explaining the configuration of the OSD character inspection device of the automated shipping machine according to the present invention, as shown in the configuration is as follows.

The pattern generator 10 outputs a pattern for OSD characters to be displayed on the image display device.

The image display device 20 displays a pattern for the OSD characters generated by the pattern generator 10 on the screen.

The CCD imager 30 captures an OSD character displayed on the screen of the image display device 20 and outputs imaging data.

The image processing unit 40 converts the imaging data output through the CCD imager 30 into digital data.

The computer main body 50 has reference information for OSD characters set, and acquires a predetermined area from the digital data input from the image processing unit 40 described above, and sets reference information for setting luminance information and coordinate information of the acquired information. After correcting by comparing with luminance information and coordinate information of the image, only pure OSD text is extracted and judged whether it is the same as the set reference OSD text to judge whether OSD text is displayed correctly on the video display device. It is determined whether or not it is a defective product.

Referring to the accompanying drawings, the operation of the OSD character inspection apparatus of the automatic shipping machine according to the present invention configured as described above will be described in more detail as follows.

2 is a flowchart illustrating an OSD character checking method of an automated shipping machine according to the present invention.

As shown in the drawing, only the information of a predetermined area is acquired and read (S200) from the information on the screen captured by the CCD imager 30, and the captured information is read and stored in a memory (not shown in the figure). The reference information is read (S210), the information on the brightness of the obtained information is read, and the information on the brightness of the reference information is read to determine whether or not it is the same (S220).

As a result of the determination in step S220, in the same case, the coordinate information is read from the information acquired for the coordinate correction and the reference information, and if it is not the same, the gain of the CCD imager 30 is adjusted (S230).

At this time, in adjusting the gain of the CCD imager 30, the operator corrects the gain by a set number of times.

In step S230, it is determined whether the read coordinate information read from the acquired information and the reference information are the same (S250). If the result is the same, only the OSD text is extracted from the acquired information. Coordinate correction is performed by comparing the coordinate information of the acquired information with respect to the information and moving the area to be acquired left and right (S250).

After the operation S250 is performed, it is determined whether the OSD text of the reference information and the OSD text of the acquired information are the same (S260). If the determination result is the same, the acquired OSD text is displayed and the quality judgment is made (S270). In this case, the operation is performed again from the above-described step S220 as many times as the set number of times.

At this time, it is determined whether the OSD character check is performed a predetermined number of times in step S290 (S300) and if the OSD character of the acquired information and the OSD character of the reference information are not the same even after performing the set number of times, it is determined as defective. (S280).

Meanwhile, FIG. 3 is a flowchart illustrating an operation of adjusting and inspecting an image display device using an OSD character that has been inspected in the present invention. This flowchart is for inspecting the function of the image display apparatus in the apparatus equipped with the image display apparatus and the inspection apparatus for inspecting the function of the image display apparatus. It is determined whether or not the adjustment item is input in the multi-level using the OSD character (S400). When the adjustment item is input as the OSD character in the determination step (S400), the OSD characters stored in the memory are sequentially read through the learning. S410).

In operation 420, it is determined whether the OSD character read in step 410 and the OSD character input by the operator are the same. As a result of the determination, if the input OSD character is the same as the leading OSD character, the controller recognizes the adjustment item of the video display device (S430), and adjusts the video display device up or down according to the adjustment value input by the operator. Adjust (S440).

That is, when the operator wants to adjust the contrast of the image display apparatus, when the image display apparatus to be adjusted is transferred to the operator, the operator inputs the image quality, contrast, and contrast adjustment value in sequence using the OSD character.

Then, the control means starts to recognize this input OSD character by comparing it with the OSD character stored by the learning. That is, the controller first recognizes an OSD character of "quality" and starts to determine what kind of OSD character is in the image quality.

At this time, by comparing and judging the OSD characters stored in the memory by the learning and OSD characters input by the operator one by one and extracting the contrast, the operator finally moves the input value up or down according to the currently set value. The contrast of the video display device is adjusted.

Therefore, as described above, the present invention enables OSD character inspection on the inspection pattern of the image display apparatus, and luminance and position correction of the image display apparatus can be performed, thereby increasing efficiency and measuring than the bit map method. It is possible to inspect the text so that the unmanned inspection can be performed during the shipment inspection of the image display device.

In addition, in the method of adjusting the function of the image display apparatus in the same manner as described above, the operator selects the image quality from the menu screen using the arrow keys and adjusts the contrast using the arrow keys again in the sub-menu of the selected image quality. After selecting, the arrow keys can be used to escape the hassle of using the arrow keys to move up or down the adjustment value shown in the bar.

Claims (3)

A pattern generator for outputting a pattern for OSD characters to be displayed on the image display device; An image display device displaying a pattern on an OSD screen generated by the pattern generator on a screen; A CCD imager for picking up an OSD character displayed on a screen of the image display device and outputting image data; An image processing unit for converting the imaging data output through the CCD imager into digital data; And Reference information on OSD characters is set, and a predetermined area is acquired from digital data input from the image processing unit, and the luminance information and coordinate information of the acquired information are compared with the luminance information and coordinate information of the set reference information. After extracting only pure OSD characters, it is determined whether the OSD characters are displayed correctly on the video display device by judging whether they are identical to the set reference OSD text, and determining whether the video display device is good or defective. OSD character inspection device of the automatic shipping machine, characterized in that consisting of. A first step of acquiring and reading only information of a predetermined area from information of a screen captured by a CCD imager; A second step of reading reference information stored in a memory after reading the information photographed in the first step; A third step of reading information on luminance in information acquired after performing the second step and reading information on luminance in reference information to determine whether the information is the same; A fourth step of reading coordinate information from the information acquired for the coordinate correction and the reference information in the same case as the determination result of the third step, and adjusting the gain of the CCD imager by a set number of times if the determination result is not the same; A fifth step of determining whether or not the coordinate information read from the acquired information read in the fourth step and the reference information are the same; As a result of the determination in the fifth step, in the same case, only the characters are extracted from the acquired information, and if not, the coordinate correction is performed by shifting the area to be acquired left and right by comparing the coordinate information of the acquired information with respect to the coordinate information of the reference information. A sixth step; A seventh step of determining whether the OSD text of the reference information and the OSD text of the acquired information are the same after performing the sixth step; An eighth step of displaying the acquired OSD text in the same case and making a good product decision in case of the same as the seventh step; And And a ninth step of determining whether or not the eighth step has been performed a predetermined number of times, and determining that the defective product is a defective product. A first step of determining whether an adjustment item of an image display device is input by OSD characters by an operator; A second step of sequentially reading OSD characters stored in a memory when OSD characters are input as a result of the determination of the first step; A third step of determining whether the OSD text read in the second step and the OSD text input by the operator are the same; A fourth step of recognizing the adjustment item of the image display apparatus when the read OSD character and the input OSD character are the same as a result of the determination of the third step; And And a fifth step of adjusting the image display device while the adjustment item recognized in the fourth step is up or down according to the adjustment value input by the operator.