JP2019164337A - Lcd display device and diagnosis system - Google Patents

Abstract

To provide an LCD display device capable of determining whether a factor of a display defect is a defect of the LED display device itself or a defect of a cable or a main board, when a display defect occurs on the LCD display device.SOLUTION: An LCD display device comprises: a storage part 11 for storing a defect determination image used for determining a factor of a display defect; an image display part 13 for displaying an input image on a display screen; an image generation part 121 for, when a video signal is input, generating an image based on the video signal by interpreting the video signal, then outputting the image to the image display part 13; and a defect determination signal detection part for detecting whether or not the input video signal matches a defect determination signal having a signal pattern which is not input in a preset normal time, when the video signal matches, blocking the input of the video signal to the image generation part and reading the defect determination image stored in the storage part 11 and outputting the same to the image display part 13, and when the video signal does not match, inputting the video signal to the image generation part 121.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an LCD display and a diagnostic system.

The cause of the LCD unit display failure is three failure modes: failure of the LCD display, failure of the cable for inputting the video signal to the LCD display (including fitting failure), and failure of the main board for controlling the LCD display. However, at the site where a display failure has occurred in the LCD unit, the current failure mode of the LCD unit cannot be determined. Even if a display failure occurs, for example, as shown in FIG. 12, a vertical line is displayed on the screen of the LCD display or half of the screen is not displayed due to the failure of the cable or the main board. During the maintenance of the LCD unit, it was impossible to specify that a defect occurred in the cable or the main board.
In addition, for example, when there is a display failure due to a contact failure of the connector connecting the cable to the LCD display, only the LCD display is based on the assumption that the LCD display itself is defective. Even if the camera was removed and a repair request was made to the service center, the display failure was not reproduced, and the display failure phenomenon could not be followed any further.

  In this regard, Patent Document 1 is an information processing apparatus having an LCD display, and displays when an abnormality occurs in a control unit that controls display on the LCD display, which is separate from the LCD display. An information processing apparatus that switches an image to an image corresponding to the type of abnormality is disclosed.

JP 2006-218553 A

  However, the technology according to Patent Document 1 switches the display according to the type of abnormality that has occurred in the control unit, and determines whether the cause of the abnormality is in the LCD display itself or in the cable or main board. It was not something that was cut out.

  The present invention is an LCD that can determine whether the cause of the display failure is the failure of the LCD display itself or the failure of the cable or the main board when a display failure occurs in the LCD display. An object is to provide a display and a diagnostic system.

  (1) The LCD display according to the present invention is an LCD display (for example, “LCD display 1” described later), and determines the cause of display failure when a display failure occurs in the LCD display. A storage unit (for example, “storage unit 11” described later) for storing a defect determination image used for the purpose, and an image display unit (for example, “image display unit 13” described later) for displaying the input image on a display screen; When an image signal is input, an image generation unit (for example, “image generation unit 121” described later) that interprets the image signal and generates an image based on the image signal and outputs the image to the image display unit; It is detected whether the input video signal matches a defect determination signal having a signal pattern that is not input at a preset normal time, and if it matches, the input of the video signal to the image generation unit is cut off. And the above The defect determination image stored in the unit is read out and output to the image display unit. If the images do not match, a defect determination signal detection unit (for example, “defect determination” described later) that inputs the video signal to the image generation unit. Signal detector 122 ").

  (2) The LCD display according to the present invention is an LCD display (for example, “LCD display 1A” described later), an image display unit for displaying an input image on a display screen, and a video signal input Then, the video signal is interpreted to generate an image based on the video signal and output to the image display unit (for example, “image generation unit 121” described later), and the input video signal Is detected in accordance with a failure determination signal having a signal pattern that is not input at a normal time set in advance, and if it matches, the input of the video signal to the image generation unit is cut off, and the An output signal corresponding to the defect determination signal is output to the outside of the LCD display, and if it does not match, a defect determination image detection unit (for example, “defect determination” described later) that inputs the video signal to the image generation unit. signal It includes a knowledge section 122a "), a.

  (3) A diagnostic system (for example, “diagnostic system 10” described later) according to the present invention includes an LCD display according to (1), a control device (for example, “control device 3” described later), and an imaging device. (For example, “photographing device 4” described later), and the control device stores image data relating to an image displayed on the display screen when the video signal is input to the LCD display. When a second storage unit (for example, “storage unit 31” described later) and a diagnostic command signal are input, the video signal is output to the LCD display, and the imaging command signal is output to the imaging device. An image displayed on the display screen based on the video signal and captured by the image capturing apparatus to which the image capturing command signal is input, for example, a “first determination unit 32” to be described later The shooting data related to the image is the shooting A second determination unit that outputs a diagnosis result of the LCD display to the photographing device based on a result of collation between the image data and the photographing data (for example, “second” described later) Determination unit 33 "), and the imaging apparatus displays the diagnosis result.

  (4) The diagnostic system (for example, “diagnostic system 10A” described later) according to (3) further includes a server (for example, “server 5” described later), and the second storage unit includes the LCD display The second determination unit further reads the identification information associated with the diagnosis result from the second storage unit, and sets the diagnosis result and the identification information as a set to the server. It may be output.

  (5) A diagnostic system (for example, “diagnostic system 10B” described later) according to the present invention includes an LCD display according to (1), a control device (for example, “control device 3B” described later), and an imaging device. (For example, “photographing device 4B” to be described later) and a server (for example, “server 5B” to be described later), and when the diagnostic command signal is input, the control device receives the video signal on the LCD display. And a first determination unit (for example, “first determination unit 31B” to be described later) that outputs an imaging command signal and identification information of the LCD display to the imaging device, and the server displays the LCD display A second storage unit (for example, “storage unit 51” to be described later) that stores image data relating to an image displayed on the display screen when the video signal is input to the display, and based on the video signal Image displayed on the display screen And when the shooting data and the identification information relating to the image shot by the shooting device to which the shooting command signal is input are input from the shooting device, based on the collation result of the image data and the shooting data Then, a second determination unit (for example, “second determination unit 52” to be described later) that outputs a diagnosis result of the LCD display, and the diagnosis result and the identification information are collected as a set to the photographing apparatus. A collecting unit (for example, “collecting unit 53” described later), and the imaging apparatus displays the diagnosis result.

  According to the present invention, when a display failure occurs in the LCD display, it is possible to determine whether the cause of the display failure is a failure of the LCD display itself or a failure of the cable or the main board. LCD display and diagnostic system can be provided.

It is a figure which shows the whole structure of the LCD display which concerns on 1st Embodiment of this invention. It is a figure which shows the example of the image at the time of imaging the signal itself of the predetermined form input into the LCD display which concerns on 1st Embodiment of this invention. It is a figure which shows the example of the image at the time of imaging the signal itself of the predetermined form input into the LCD display which concerns on 1st Embodiment of this invention. It is a figure which shows the example of the image displayed corresponding to this signal, when the signal of the predetermined form is input with respect to the LCD display which concerns on 1st Embodiment of this invention. It is a figure which shows the example of the image displayed when the signal of a predetermined form is input when there exists a defect in the LCD display which concerns on 1st Embodiment of this invention. It is a figure which shows the example of the image displayed when the signal of a predetermined form is input when there exists a defect in the control side or cable of the LCD display which concerns on 1st Embodiment of this invention. It is a figure which shows the whole structure of the LCD display which concerns on 2nd Embodiment of this invention. It is a figure which shows the whole structure of the diagnostic system which concerns on 3rd Embodiment of this invention. It is a figure which shows the whole structure of the diagnostic system which concerns on 4th Embodiment of this invention. It is a figure which shows the whole structure of the LCD display which concerns on the modification 1 of this invention. It is a figure which shows the whole structure of the diagnostic system which concerns on the modification 2 of this invention. It is a figure which shows the example of the screen displayed when there is a defect in an LCD unit.

[1. First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the overall configuration of an LCD display 1 according to the first embodiment. 2 and 3 show examples of images when a signal having a preset signal pattern input to the LCD display 1 is visualized. FIG. 4 shows an example of an image displayed on the LCD display 1 in response to a signal having a preset signal pattern inputted to the LCD display 1. FIG. 5 shows an example of an image displayed when a signal having a preset signal pattern is input when a defect exists in the LCD display 1 itself. FIG. 6 shows an example of an image displayed when a signal having a preset signal pattern is input when there is a defect on the control side of the LCD display 1 or a cable for inputting a signal to the LCD display 1. Indicates.

[1.1 Overall structure of the invention]
As shown in FIG. 1, the LCD display 1 includes a storage unit 11, an ASIC (application-specific integrated circuit) 12, and an image display unit 13. The ASIC 12 includes an image generation unit 121 and a failure determination signal detection unit 122. Prepare.

  The storage unit 11 stores a failure determination image used for determining the cause of display failure when a display failure occurs in the LCD display 1. Details of the defect determination image will be described later.

  When a video signal is input from the control side of the LCD display 1 via the cable 2, the image generation unit 121 interprets the video signal and generates an image based on the video signal. Output.

  The defect determination signal detection unit 122 is a defect determination signal (hereinafter referred to as a defect determination signal) having a signal pattern in which a video signal input from the control side of the LCD display 1 to the LCD display 1 via the cable 2 is not input in a preset normal state. In some cases, it is also referred to as “signal A”). More specifically, the defect determination signal detection unit 122 stores a signal pattern of the signal A in advance, and detects whether or not the signal input to the LCD display 1 matches the signal A having this signal pattern. To do. Further, when the input of the signal A to the LCD display 1 is detected, the defect determination signal detection unit 122 cuts off the input of the signal A to the image generation unit 121 and displays the defect determination image from the storage unit 11. Read and transmit to the image display unit 13.

The signal A is a VIDEO signal (video signal), and is input to the cable 2 from the control side by the operation of an operator such as a maintenance person of the LCD display 1. The signal A is a signal having a predetermined pattern, and is not input to the cable 2 in normal times.
2 and 3 show examples of images when the image generation unit 121 interprets the signal A and visualizes it. When the signal A is visualized, as shown in FIG. 2, the alphabet “F” may be an image aligned on one side, and as shown in FIG. It may be an existing image.

On the other hand, the defect determination image is an image that is not normally displayed on the LCD display 1, and is, for example, a red image on one side, specifically, an RGB value (R: G: B) = (255: 0: 0). The image may be a green image, specifically an RGB value (R: G: B) = (0: 255: 0), or a blue image, specifically Specifically, the image may have an RGB value of (R: G: B) = (0: 0: 255). Alternatively, the defect determination image may be a gradation image as shown in FIG.
This defect determination image is an image that is read from the storage unit 11 in response to the signal A when the defect determination signal detection unit 122 detects the input of the signal A to the LCD display 1. For example, FIG. 3 and the image obtained by visualizing the signal A itself as shown in FIG.

  The image display unit 13 includes a display, and displays the image input from the image generation unit 121 or the defect determination image input from the defect determination signal detection unit 122 on the display screen. More specifically, when a defect determination image is input from the defect determination signal detection unit 122 due to the input of the signal A to the LCD display 1, the image display unit 13 displays an image based on the defect determination image. Show on the display. On the other hand, if the control side of the LCD display 1 or the cable 2 is defective, and the signal A is input to the LCD display 1 as the signal A ′, the image display unit 13 An image based on the image generated by 121 is displayed on the display.

  In addition, said display is the screen itself on which the LCD display 1 displays an image. More specifically, the display uses light from a backlight such as a fluorescent lamp or LED installed behind the liquid crystal by changing the direction of the liquid crystal molecules at the position of the intersection with electrode lines arranged in a grid pattern. This is a screen for displaying an image by controlling the transmission of the image.

  The overall configuration of the LCD display 1 according to the first embodiment is as described above. Next, the operation of the LCD display 1 will be described.

[1.2 Operation of the invention]
Hereinafter, for convenience of explanation, a case where a vertical line is displayed on the screen of the LCD display 1 will be described as an example of display failure.

  When the signal A is input to the LCD display 1 through the cable 2 from the control side of the LCD display 1 by the operation of the maintenance staff in order to isolate the cause of the display failure of the LCD display 1, the LCD display 1 If the cause of the display failure is in the LCD display 1 itself and not in the control side of the LCD display 1 or the cable 2 for inputting a signal to the LCD display 1, the signal A is not converted into a different signal. The signal A is input to the LCD display 1 as it is.

  The defect determination signal detection unit 122 detects the input of the signal A, blocks the input of the signal A to the image generation unit 121, reads a defect determination image from the storage unit 11, and outputs it to the image display unit 13.

  The image display unit 13 displays an image based on the defect determination image input from the defect determination signal detection unit 122.

  Here, if the defect determination image itself is, for example, a gradation image shown in FIG. 4, the LCD display 1 itself has a cause of display failure. Displays an image with vertical lines overlapped.

  An operator such as a maintenance staff confirms the image of FIG. 5, and the cause of the display failure of the LCD display 1 is the failure of the LCD display 1 itself, and the control side of the LCD display 1 or the LCD display 1 It is possible to specify that the cable 2 for inputting a signal is not defective.

  On the other hand, when the cause of the display failure of the LCD display 1 is the failure of the control side of the LCD display 1 or the cable 2 that inputs a signal to the LCD display 1, by the operation of an operator such as a maintenance worker, Even if the signal A is input to the LCD display 1, the signal A is converted into a signal A ′ different from the signal A on the control side or the cable 2 of the LCD display 1, and the signal A ′ is transmitted to the LCD display 1. Will be entered.

  Since the defect determination signal detection unit 122 does not detect the input of the signal A, the input of the signal A ′ to the image generation unit 121 is not blocked, and the signal A ′ is input to the image generation unit 121. .

  The image generation unit 121 generates an image corresponding to the signal A ′ by interpreting the signal A ′, and transmits this image to the image display unit 13.

The image display unit 13 displays an image based on the image received from the image generation unit 121.
Here, if the image generated by the image generation unit 121 interpreting the signal A itself is an image in which alphabets “F” are aligned on one side, for example, as shown in FIG. Since the signal A is converted to the signal A ′ due to a defect in the control side of the device 1 or the cable 2, the LCD display 1 displays the alphabet “F” as shown in FIG. 6 based on the signal A ′. Displays an image in which the images are aligned on one side and the vertical line display overlaps.

  An operator such as a maintenance staff confirms the image of FIG. 6, and the cause of the display failure of the LCD display 1 is the failure of the cable 2 that inputs a signal to the control side of the LCD display 1 or the LCD display 1. It becomes possible to specify that there is.

  The display defect is not limited to a case where a vertical line is displayed on the screen of the LCD display 1. For example, cases where all or part of the image displayed on the LCD display 1 is deformed are all included in display defects.

[1.3 Effects of the first embodiment]
When the failure determination signal A having a signal pattern that is not input in a preset normal state is input to the LCD display 1 according to the first embodiment, the cause of the display failure is a failure of the LCD display 1 The failure determination image stored in the storage unit 11 is read out, and the LCD display 1 displays an image based on the failure determination image. On the other hand, if the cause of the display failure is the control side of the LCD display 1 or the cable 2 failure, the failure determination signal A is converted into a different signal A ′ and then input to the LCD display 1. An image obtained by visualizing the signal A ′ different from the defect determination signal A is displayed.
As a result, when an LCD display failure occurs, an operator such as a maintenance staff of the LCD display controls whether the cause of the display failure is the failure of the LCD display itself, or controls the LCD display. It is possible to diagnose whether the cable for inputting a signal to the main board or the LCD display is defective by using the LCD display alone.
As a result, when the LCD display is maintained, the parts to be replaced can be narrowed down in order to eliminate the display defect, so that the on-site response can be made faster than before. Further, by isolating the cause of the display failure of the LCD display, it becomes possible to reduce the proportion of the LCD display that cannot reproduce the phenomenon of display failure in the investigation of the failure of the LCD display from the current level.

[2. Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to FIG. FIG. 7 shows the overall configuration of an LCD display 1A according to the second embodiment. For the sake of simplification of description, in the following, among the constituent elements included in the LCD display 1A, the same constituent elements as those included in the LCD display 1 are denoted by the same reference numerals and the description thereof is omitted. The difference from the LCD display 1 will be mainly described.

[2.1 Overall structure of the invention]
As shown in FIG. 7, unlike the LCD display 1, the LCD display 1A does not include the storage unit 11 and the defect determination signal detection unit 122, but includes a defect determination signal detection unit 122a instead.

  Similarly to the defect determination signal detection unit 122, the defect determination signal detection unit 122a stores a signal pattern of the signal A in advance, and detects the input of the signal A having this signal pattern to the LCD display 1A. At the same time, when the input of the signal A is detected, the input of the signal A to the image generation unit 121 is blocked and is not input to the image generation unit 121. However, unlike the defect determination signal detection unit 122, the signal A As a feedback to, a predetermined signal B corresponding to the signal A is output to the control side.

  Furthermore, for example, by installing an LED that is turned on when the signal B is received on the control side, it becomes possible for the user to check the output of the signal B from the defect determination signal detection unit 122a.

[2.2 Operation of the invention]
In order to isolate the cause of the display failure of the LCD display 1A, a signal A is input to the LCD display 1A from the control side of the LCD display 1A via the cable 2 by the operation of an operator such as a maintenance worker. If the cause of the display failure of the LCD display 1A is the failure of the LCD display 1A itself, and the cable 2 that inputs a signal to the LCD display 1A or the LCD display 1A is not defective, the signal A is The signal A is input to the LCD display 1A without being converted into a different signal.

  The defect determination signal detection unit 122 detects the input of the signal A, blocks the input of the signal A to the image generation unit 121, and outputs a signal B corresponding to the signal A to the control side. The maintenance staff confirms that the LED provided on the control side is turned on, whereby the cause of the display failure of the LCD display 1A is the failure of the LCD display 1A itself, and the control side of the LCD display 1A or the LCD display It is possible to specify that there is no defect in the cable 2 that inputs a signal to 1A.

  On the other hand, when the cause of the display failure of the LCD display 1A is the failure of the control side of the LCD display 1A or the cable 2 that inputs a signal to the LCD display 1A, the operation of an operator such as a maintenance staff Even if the signal A is input to the LCD display 1A, the signal A is converted into a signal A ′ different from the signal A on the control side of the LCD display 1A or the cable 2, and the signal A ′ is transmitted to the LCD display 1A. Will be entered.

  Since the defect determination signal detection unit 122 does not detect the input of the signal A, the signal B corresponding to the signal A is not output to the control side, and the LED provided on the control side is not lit. An operator such as a maintenance staff inputs a signal to the control side of the LCD display 1A or to the LCD display 1A because the display failure of the LCD display 1A is confirmed by confirming that the LED provided on the control side is turned off. It becomes possible to specify that the cable 2 is defective.

[2.3 Effects of the second embodiment]
When the signal A, which is a failure determination signal having a signal pattern that is not input in a normal state, is input to the LCD display 1A according to the second embodiment, the cause of the display failure is the LCD display 1A itself. If there is a failure, the failure determination signal detector 122 outputs a signal B corresponding to the signal A to the control side, and the control side LED is lit. On the other hand, when the cause of the display failure is the control side of the LCD display 1 or the failure of the cable 2, the signal A, which is a failure determination signal, is converted into a different signal and input to the LCD display 1A. Therefore, the signal B is not fed back to the control side, and the LED on the control side is not lit.
As a result, an operator such as a maintenance staff of the LCD display, when a display failure occurs in the LCD display, is the cause of the display failure in the LCD display itself or the main board that controls the LCD display. Alternatively, it is possible to diagnose whether a cable for inputting a signal to the LCD display is defective.

  Furthermore, in the second embodiment, an operator such as a maintenance worker only confirms whether the LED installed on the control side is turned on or off in a binary manner, so that in some cases, a subtle difference in the displayed image is recognized. Compared with the first embodiment which is necessary, it is possible to more easily identify the cause of the display failure of the LCD display.

[3. Third Embodiment]
Hereinafter, a third embodiment of the present invention will be described with reference to FIG. FIG. 8 shows the overall configuration of the diagnostic system 10 according to the third embodiment. As will be described later, the diagnostic system 10 includes the LCD display 1 according to the first embodiment. However, for simplification of description, description and illustration of components included in the LCD display 1 are omitted below. To do.

[3.1 Overall Configuration of Invention]
As shown in FIG. 8, the diagnostic system 10 includes a control device 3 and an imaging device 4 in addition to the LCD display 1 and the cable 2 according to the first embodiment.

  When a diagnosis command signal is input by an operator such as a maintenance staff through an arbitrary input interface set in advance, the control device 3 outputs the signal A to the LCD display 1 through the cable 2. It is a device that outputs a signal C that is a photographing command signal to the photographing device 4 while outputting. Further, the control device 3 uses the image data related to the image captured by the image capturing device 4 to which the signal C is input as the screen displayed on the display of the LCD display 1 when the signal A is input. This is a device for discriminating whether or not the LCD display 1 is defective.

The control device 3 includes a storage unit 31, a first determination unit 32, and a second determination unit 33.
The storage unit 31 stores image data displayed alone by the LCD display 1. More specifically, the storage unit 31 stores image data relating to the same image as the defect determination image used for determining the cause of the display defect when a display defect occurs in the LCD display 1. The defect determination image is an image that is not normally displayed on the LCD display 1 and is, for example, an image with a red surface, specifically, an RGB value (R: G: B) = (255: 0: 0). The image may be a green image on one side, specifically an image with an RGB value of (R: G: B) = (0: 255: 0). May be an image with an RGB value of (R: G: B) = (0: 0: 255). Alternatively, the defect determination image may be a gradation image as shown in FIG.

  When the diagnosis command signal is input, the first determination unit 32 outputs a signal A that is a video signal to the LCD display 1 and a signal C that is a shooting command signal to the imaging device 4.

  The second determination unit 33 receives image data related to an image that is displayed on the display of the LCD display 1 based on the signal A and is captured by the image capturing device 4 to which the signal B is input. . When this shooting data is input from the shooting device 4 to the second determination unit 33, the image data stored in the storage unit 31 and the shooting data are collated, and the image data and the shooting data match. Determine whether or not. Furthermore, the second determination unit 33 outputs the diagnosis result of the LCD display 1 to the photographing device 4 based on the determination result.

  The photographing device 4 is a device that photographs the display of the LCD display 1, and may be a smartphone, for example, or may be a camera attached to the control device 3.

[3.2 Operation of the Invention]
Hereinafter, for convenience of explanation, a case where a vertical line is displayed on the screen of the LCD display 1 will be described as an example of display failure.

  When a diagnosis command signal is input to the control device 3 by the operation of an operator such as a maintenance worker, if there is no cause of display failure of the LCD display 1 or the cable 2, The signal A is input to the LCD display 1 as it is without being converted into a different signal.

  The defect determination signal detection unit 122 of the LCD display 1 detects the input of the signal A to the LCD display 1, thereby blocking the input of the signal A to the image generation unit 121 and determining the defect from the storage unit 11. The image is read out and transmitted to the image display unit 13. The image display unit 13 of the LCD display 1 displays an image based on the defect determination image input from the defect determination signal detection unit 122.

  Here, when the defect determination image itself is a gradation image as shown in FIG. 4, for example, the LCD display 1 displays the gradation image.

  The gradation image displayed on the LCD display 1 is photographed by the photographing device 4 to which the signal C is inputted, and this photographing data is inputted to the second determination unit 33 of the control device 3.

  The second determination unit 33 compares, for example, image data related to the gradation image shown in FIG. 4 stored in the storage unit 31 with the shooting data, and if they match, the LCD display 1 itself is also connected to the cable. It is possible to diagnose that there is no cause of display failure in 2.

  On the other hand, when the LCD display 1 itself has a cause of display failure of the LCD display 1 and the cable 2 for inputting a signal to the LCD display 1 is not present, the image display unit 13 of the LCD display 1 is defective. Although an image is displayed based on the failure determination image input from the determination signal detection unit 122, the LCD display 1 itself has a cause of display failure. Therefore, the LCD display 1 has been described in the first embodiment. Thus, for example, an image in which gradation and vertical lines shown in FIG. 5 are overlapped is displayed.

  The image capturing device 4 to which the signal C is input captures an image in which the gradation displayed on the LCD display 1 and the vertical line display overlap, and the captured data is input to the second determination unit 33 of the control device 3. The

  The second determination unit 33 compares, for example, the image data related to the gradation image shown in FIG. 4 stored in the storage unit 31 with the shooting data of the image in which the gradation and the vertical line display overlap each other, and these match. If not, it is possible to diagnose that there is a cause of display failure in at least one of the LCD display 1 itself and the cable 2.

  If there is a cause of display failure of the LCD display 1 in the cable 2 for inputting a signal to the LCD display 1, even if an attempt is made to input the signal A to the LCD display 1, the signal A in the cable 2 is The signal A ′ is different from the signal A, and the signal A ′ is input to the LCD display 1. Since the defect determination signal detection unit 122 of the LCD display 1 does not detect the input of the signal A, the input of the signal A ′ to the image generation unit 121 is not blocked, and the signal A ′ is the image generation unit. 121 is input.

  The image generation unit 121 of the LCD display 1 generates an image corresponding to the signal A ′ by interpreting the signal A ′, and transmits this image to the image display unit 13. As described in the first embodiment, the LCD display 1 displays, for example, an image in which alphabets “F” shown in FIG.

  The imaging device 4 to which the signal C is input captures an image in which the alphabet “F” displayed on the LCD display 1 is aligned on one side and an image in which vertical lines are overlapped. 3 is input to the second determination unit 33.

  The second determination unit 33 stores, for example, image data related to the gradation image shown in FIG. 4 stored in the storage unit 31, an image in which the alphabet “F” is aligned on one side, and an image in which vertical lines are overlapped. Compared with the photographic data, since these do not match, it is possible to diagnose that the cause of the display defect exists in at least one of the LCD display 1 itself and the cable 2.

The second determination unit 33 outputs the diagnosis result to the imaging device 4. The imaging device 4 can receive the diagnosis result and display the diagnosis result.
By doing so, an operator such as a maintenance staff can avoid, for example, “missing a vertical line”, “not noticed a change in color”, and the like, and does not make an erroneous determination.

[3.3 Effects of the third embodiment]
When a failure determination signal A having a signal pattern that is not input in a normal state is input from the control device 3 to the LCD display 1 provided in the diagnostic system 10 according to the third embodiment, the LCD display 1 When there is no cause of display failure in any of the cable 2 and the cable 2, the failure determination image stored in the storage unit 11 is read, and the LCD display 1 displays an image based on the failure determination image. The control device 3 (second determination unit 33) is configured so that the display image of the LCD display 1 taken by the photographing device 4 matches the defect determination image stored in the control device 3, and the LCD display 1 and It is diagnosed that there is no cause of display failure in any of the cables 2, and the diagnosis result is returned to the imaging device 4.

  On the other hand, when there is a cause of display failure in at least one of the LCD display 1 and the cable 2, the control device 3 (second determination unit 33) displays the image on the display of the LCD display 1 taken by the photographing device 4. By not matching the failure determination image stored in the control device 3, it is diagnosed that the cause of the display failure exists in at least one of the LCD display 1 and the cable 2, and the diagnosis result is returned to the imaging device 4.

  Thereby, based on the imaging | photography data which image | photographed the image displayed on the LCD display 1 by the imaging device 4, the control apparatus 3 (2nd judgment part 33) of the display defect in either the LCD display 1 or the cable 2 is demonstrated. It is possible to diagnose the existence of the cause, and without relying solely on the visual observation of maintenance personnel and the like, for example, by overlooking the vertical line or not being aware of the color change, No longer make mistakes.

[4. Fourth Embodiment]
The fourth embodiment of the present invention will be described below with reference to FIG. FIG. 9 shows the overall configuration of a diagnostic system 10A according to the fourth embodiment. For the sake of simplification of description, in the following, among the components provided in the diagnostic system 10A, the same components as those provided in the diagnostic system 10 are denoted by the same reference numerals and the description thereof is omitted. Differences from the diagnostic system 10 will be described.

[4.1 Overall Configuration of Invention]
As shown in FIG. 9, unlike the diagnostic system 10, the diagnostic system 10 </ b> A includes a control device 3 </ b> A instead of the control device 3, and further includes a server 5. In addition, the control device 3A includes a storage unit 31A and a second determination unit 33A.

  The storage unit 31 </ b> A stores identification information of the LCD display 1 in addition to image data displayed alone by the LCD display 1. In particular, when diagnosing a plurality of LCD displays 1 using the control device 3 </ b> A, the storage unit 31 </ b> A stores identification information for the number of LCD displays 1.

  The second determination unit 33A collates the image data stored in the storage unit 31 with the shooting data, and determines whether the image data and the shooting data match with each other based on the determination result. On the other hand, the diagnostic results of the LCD display 1 and the cable 2 are output. In addition to this, the second determination unit 33 </ b> A also outputs the diagnosis results of the LCD display 1 and the cable 2 to the server 5.

  The diagnosis result data of the LCD display 1 and the cable 2 input to the server 5 includes, in addition to the diagnosis result itself, identification information of the LCD display 1 that is the transmission destination of the signal A read from the storage unit 31A, and The diagnosis date and time of the diagnosis result is added.

  The server 5 stores the diagnosis result and diagnosis date and time of the LCD display 1 and the cable 2 for each identification information of the LCD display 1.

  In addition, in order to implement | achieve the server 5, you may apply the virtual server on a cloud, for example. For example, fog computing shared in the cloud (Fog Computing is a registered trademark of Cisco) may be used.

[4.2 Effects of the fourth embodiment]
Also in the diagnostic system 10A according to the fourth embodiment, as with the diagnostic system 10 according to the third embodiment, the display image of the LCD display 1 photographed by the photographing device 4 is stored in the control device 3 If the determination image matches the determination image, the second determination unit 33A determines that neither the LCD display 1 nor the cable 2 has a cause of display failure. On the other hand, when the display image of the LCD display 1 photographed by the photographing device 4 does not match the failure judgment image stored in the control device 3A, the second judgment unit 33A displays the LCD display 1 and the cable. It is determined that there is a cause of display failure in at least one of the two.

  Thereby, similarly to the diagnostic system 10 according to the third embodiment, the control device 3A (second determination unit 33A) displays the LCD on the basis of the photographing data obtained by photographing the image displayed on the LCD display 1 by the photographing device 4. It is possible to diagnose the presence of the cause of display failure in either the device 1 or the cable 2, and an operator such as a maintenance worker makes a wrong decision without relying only on the visual observation of the operator such as a maintenance worker. Disappears.

  Furthermore, in the diagnosis system 10A according to the fourth embodiment, the server 5 stores the diagnosis result and diagnosis date and time data of the LCD display 1 and the cable 2 for each identification information of the LCD display 1.

  As a result, the number of defects of the LCD display 1 and the cable 2 is accumulated on the server 5, and the collected data can be used for failure analysis related to the LCD display 1.

  Also, an operator such as a maintenance worker can upload information related to the diagnosis result of the LCD display 1 and the cable 2 to the server 5 simply by photographing the display of the LCD display 1 with the photographing device 4. It becomes possible to save the labor related to the data storage of the operator.

[5 Modification]
[5.1 Modification 1]
As described above, in the first embodiment and the second embodiment, the cause of the display failure of the LCD display is due to the failure of the LCD display itself and not on the control side of the LCD display or the cable of the LCD display. It was to specify whether the case was a defective case on the control side of the LCD display or the cable of the LCD display. That is, when the cause of the display failure of the LCD display is in the control side of the LCD display or the failure of the cable of the LCD display, is there also a cause of the display failure in the failure of the LCD display itself, or There is no cause of display failure in the LCD display itself, and it has not been possible to determine whether the cause of display failure exists only on the control side of the LCD display or the cable of the LCD display.

  In the first modification, there is a device capable of inputting the signal A to the LCD display 1 independently of the LCD display unit, and the cause of the display failure of the LCD display is the control side of the LCD display or When the cable is defective, an operator such as a maintenance person inputs a signal A directly to the LCD display 1 using this apparatus as shown in FIG.

  If there is no cause of display failure in the LCD display 1 itself, and the failure determination image itself is, for example, a gradation image shown in FIG. 4, the LCD display 1 displays the gradation image shown in FIG. Is displayed as it is.

  On the other hand, when there is a cause of display failure in the LCD display 1 itself, the LCD display 1 displays an image in which gradation and vertical lines are displayed as shown in FIG.

  That is, when the signal A is directly input to the LCD display 1 and the gradation image shown in FIG. 4 is displayed as it is, the cause of the display failure is only the control side of the LCD display 1 or the failure of the cable 2. It can be specified that it exists and does not exist in the LCD display 1. On the other hand, when an image in which gradation and vertical lines are overlapped as shown in FIG. 5 is displayed, the cause of the display failure is the control side of the LCD display 1 or the cable 2 and the LCD display 1 itself. It can be specified that it exists in both defects.

  In addition, when the cause of the display defect of the LCD display 1 is not the defect of the LCD display 1 itself but the defect of the control side of the LCD display 1 or the cable 2, the cable 2 is previously defective. If a defective display occurs even if the LCD display 1 is used normally after replacing it with a cable that has been confirmed to be non-existent, an operator such as a maintenance staff may indicate that the cause of the defective display on the LCD display 1 Can be specified. On the other hand, when no display defect occurs, an operator such as a maintenance staff can specify that the cause of the display defect of the LCD display 1 is the cable 2.

[5.2 Modification 2]
FIG. 11 shows an overall configuration of the second modification. Unlike the diagnostic system 10A according to the fourth embodiment, the diagnostic system 10B according to the second modification includes a control device 3B, an imaging device 4B, and a server 5B.

  In the diagnosis system 10A according to the fourth embodiment, the second determination unit 33A of the control device 3A outputs the diagnosis result of the LCD display 1 to the server 5, and the server 5 includes the identification information of the LCD display 1. Each time, the diagnosis result and diagnosis date and time of the LCD display 1 and the cable 2 were stored.

  On the other hand, in the diagnostic system 10B according to the second modification, the control device 3B includes only the first determination unit 31B, and the server 5 includes the storage unit 51, the second determination unit 52, and the collection unit 53.

  Similar to the first determination unit 32 of the control device 3, the first determination unit 31B of the control device 3B receives the signal A, which is a video signal, on the LCD display 1 as an imaging command signal when a diagnosis command signal is input. A certain signal C is output to the imaging device 4B. The signal C includes identification information of the LCD display 1.

  Further, when outputting the shooting data to the server 5B, the shooting device 4B outputs the identification information of the LCD display 1 in addition to the shooting data.

  Since the identification information of the LCD display 1 is input from the imaging device 4B to the second determination unit 52 of the server 5B, the storage unit 51 is different from the storage unit 31A of the control device 3A. There is no need to store information.

  In addition, the second determination unit 52 collates the image data stored in the storage unit 51 with the shooting data, and based on the result of determining whether the image data and the shooting data match, the shooting device The diagnostic results of the LCD display 1 and the cable 2 are output to 4B. In addition to this, the second determination unit 52 also outputs the diagnostic results of the LCD display 1 and the cable 2 to the collection unit 53.

  The diagnosis result data of the LCD display 1 and the cable 2 input to the collection unit 53 is the transmission destination of the signal A input from the imaging device 4B to the second determination unit 52 in addition to the diagnosis result itself. The identification information of the LCD display 1 and the diagnosis date and time of the diagnosis result are added.

As described above, in the diagnostic system 10A according to the fourth embodiment, the storage unit 31A and the second determination unit 33A provided on the control device 3 side are used as the storage unit 51 and the second determination unit 52 on the server 5B side. You may make it deform | transform so that it may provide.
By doing so, the imaging device 4B communicates with the server 5B, whereby it is possible to collect diagnostic results on the server 5B side and to feed back diagnostic results from the server 5B to the imaging device 4B. Further, the physical configuration and circuit can be simplified on the control device 3B side.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above. Further, the effects described in the present embodiment are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the present embodiment.

DESCRIPTION OF SYMBOLS 1 1A LCD display 2 Cable 3 3A 3B Control apparatus 4 4B Imaging apparatus 5 5B Server 10 10A 10B Diagnostic system 11 Memory | storage part 12 ASIC (application-specific integrated circuit)
13 Image display unit 31 31A 51 Storage unit 31B 32 First determination unit 33 33A 52 Second determination unit 53 Collection unit 121 Image generation unit 122 122a Defect determination signal detection unit

Claims (5)

An LCD display,
A first storage unit that stores a defect determination image used to determine the cause of a display defect when a display defect occurs in the LCD display;
An image display unit for displaying the input image on the display screen;
When a video signal is input, an image generation unit that interprets the video signal to generate an image based on the video signal and outputs the image to the image display unit;
It is detected whether the input video signal matches a defect determination signal having a signal pattern that is not input at a preset normal time, and if it matches, the input of the video signal to the image generation unit is cut off. In addition, the defect determination image stored in the first storage unit is read out and output to the image display unit, and if it does not match, a defect determination signal detection unit that inputs the video signal to the image generation unit, An LCD display comprising: An LCD display,
An image display unit for displaying the input image on the display screen;
When a video signal is input, an image generation unit that interprets the video signal to generate an image based on the video signal and outputs the image to the image display unit;
It is detected whether or not the input video signal matches a defect determination signal having a signal pattern that is not input at a preset normal time, and if it matches, the input of the video signal to the image generation unit is detected. A failure determination image detection unit that outputs an output signal corresponding to the failure determination signal to the outside of the LCD display and causes the video signal to be input to the image generation unit when they do not match. An LCD display provided. An LCD display according to claim 1;
A control device;
A photographing device;
The controller is
A second storage unit that stores image data relating to an image displayed on the display screen when the video signal is input to the LCD display;
When a diagnostic command signal is input, a first determination unit that outputs the video signal to the LCD display and outputs a shooting command signal to the imaging device;
When shooting data related to an image displayed on the display screen based on the video signal and captured by the imaging device to which the imaging command signal is input is input from the imaging device, A second determination unit that outputs a diagnostic result of the LCD display to the imaging device based on a collation result between image data and the imaging data;
With
The imaging apparatus displays the diagnosis result. A server,
The second storage unit further stores identification information of the LCD display,
The said 2nd judgment part further reads the said identification information linked | related with the said diagnostic result from the said 2nd memory | storage part, and outputs the said diagnostic result and the said identification information to the said server as a set. Diagnostic system. An LCD display according to claim 1;
A control device;
A photographing device;
And a server,
The controller is
When a diagnostic command signal is input, the image display signal is input to the LCD display, and a first determination unit that outputs a shooting command signal and identification information of the LCD display to the imaging device is provided.
The server
A second storage unit that stores image data relating to an image displayed on the display screen when the video signal is input to the LCD display;
Shooting data and identification information relating to an image displayed on the display screen based on the video signal and captured by the shooting device to which the shooting command signal is input are input from the shooting device. And a second determination unit that outputs a diagnostic result of the LCD display to the imaging device based on a collation result between the image data and the imaging data,
A collection unit that collects the diagnosis result and the identification information as a set;
The imaging apparatus displays the diagnosis result.