JP2007325056A - Inspection apparatus and inspection method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection apparatus and inspection method in which whether or not a remote controller or the like is normally operated, without performing high-level image processing in a display device of a television or the like. <P>SOLUTION: An inspection apparatus 21 for inspecting an operation function on a display screen of a display 12 of a liquid crystal television 11 is characterized in comprising: a scenario holding unit 41 for storing a procedure of inspection; a scenario processing unit 31 for generating, outputting a control signal for executing the inspection; a mask processing unit 33 for generating, outputting a mask control signal; a camera 23 in which the inspection is execution in accordance with an inspection control signal and a display picture of which light transmission is controlled by the mask control signal, is picked up; an expectation image holding unit 44 for generating and storing an expectation display picture to be displayed by inspection and mask control; and a determination processing unit 35 for comparing the picked-up display picture and the expectation display picture to determine whether or not an object to be inspected is being operated normally. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an inspection device and an inspection method, and more particularly to an inspection device and an inspection method for inspecting a display device, a remote control device, and other electronic devices.

  In recent years, various functions such as an input switching function, an electronic program guide function, an image quality adjustment function, and the like have been installed in display devices typified by digital televisions. Operations for executing these functions are mainly performed using a remote control device (abbreviated as a remote controller) attached to the display device.

  Therefore, when inspecting the function of the display device, it is important to operate the remote controller to check whether the function of the display device body operates normally. With the increase in functionality, the number of inspection items related to remote control operations has increased, and the inspection details have become more complicated.

  However, in the past, the inspection of whether or not the operation for executing the function is normal, not limited to the remote control operation, is often done manually, and there is a problem from the viewpoint of inspection time and reliability, There was an urgent need to automate the inspection.

In view of this, there is disclosed a device that can easily and automatically determine whether various setting operations using operation buttons of a mobile phone can be performed as designed.
In this conventional technique, an entire image of a mobile phone that has been imaged in advance is displayed on the display unit, and the image of the display unit obtained by the imaging unit is displayed at the display position of the displayed entire image of the mobile phone. One of a plurality of pressing means is assigned to the image of the operation button of the entire image of the telephone, and the pressing means is operated by an instruction operation on the image portion of the assigned operation button. From the display content of the display unit, it is possible to confirm the coincidence between the pressing of the operation button of the mobile phone and the display of the mobile phone (see Patent Document 1).
JP 2001-268202 A

However, in the inspection of a display device such as a digital television, it is difficult to apply the conventional technique as described above as it is for the following reasons.
That is, the situation is different in that the display unit of the mobile phone mainly displays still images, whereas the display unit of a display device represented by a television mainly displays moving images such as broadcast programs.

  Specifically, when an operation for executing a certain function is performed by a television remote controller, different display contents are displayed on a broadcast program that is a moving image according to the executed function. Other display contents include, for example, a menu display for adjusting image quality, a channel display of a broadcast program currently being viewed, and an EPG (Electronic Program Guide) display.

  Therefore, unlike the case of a still image, the captured image of the display unit changes depending on the timing at which the image is captured. Therefore, it is extremely rare that the entire display screen has the same display.

  In addition, when a function such as EPG display is executed by a remote controller, the television image display may show a moving image such as a broadcast program through alpha blending in a rectangular area where the EPG is displayed. Here, alpha blending is to perform translucent synthesis using a coefficient (alpha value) for two images.

  In such a case, in order to apply the conventional technique, it is necessary to extract only a still image portion that has not been synthesized by alpha blending from the display content of the television and to compare it with an image captured in advance. However, such a still image extraction requires an advanced image processing technique, which is quite difficult to realize.

  The present invention has been made in view of the above-described conventional problems, and in a display device capable of displaying a moving image such as a television, has the operation of the remote control or the like been normally performed without performing advanced image processing? It is an object of the present invention to provide an inspection apparatus and an inspection method capable of automatically inspecting whether or not.

An inspection apparatus and an inspection method according to the present invention for solving the above-described problems are as follows.
The inspection apparatus according to claim 1 is an inspection apparatus that inspects an operation function by a display screen in a display device capable of displaying a moving image, and is based on an inspection procedure storage unit that stores a procedure related to inspection, and the stored inspection procedure Generating a control signal for generating and outputting a control signal for executing inspection, and generating a mask control signal for controlling a mask for adjusting transmission of light emitted from the display screen based on the stored inspection procedure And a mask control signal generating / outputting means for outputting and imaging a display screen of an inspection object in which inspection is executed by the inspection control signal based on the stored inspection procedure and light transmission is adjusted by the mask control signal Display screen imaging means for generating and storing an expected display screen expected to be displayed by inspection based on the inspection procedure and control of the mask A standby display screen generation storage unit; and a test determination unit that compares the captured display screen with the expected display screen to determine whether or not the test target is operating normally. To do.

Using this inspection apparatus, the above-mentioned means that function respectively are inspected in the following procedure under the control of a computer.
First, prepare a test scenario that records the remote control operation, imaging with the camera, image determination timing, mask data corresponding to the remote control operation and the expected image before the inspection is performed. Save it. Next, when an inspection start command is received, according to the inspection procedure, in the case of a remote control operation command, the remote control is operated. In this way, the inspection apparatus according to the present invention can automatically inspect the remote control function.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the mask control signal is supplied to the liquid crystal shutter provided between the display screen to be inspected and the display screen imaging means. This is characterized in that it is a signal for controlling.

  According to a third aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the mask control signal is a signal for controlling a backlight for adjusting the brightness of the display screen to be inspected. It is characterized by.

  According to a fourth aspect of the invention, in addition to the configuration of the first aspect of the invention, the mask control signal is a signal for controlling a driver for displaying the display screen to be inspected. It is what.

  The inspection method according to claim 5 is an inspection method for inspecting an operation function by a display screen in a display device capable of displaying a moving image, based on the step of storing a procedure related to the inspection and the stored inspection procedure. Generating and outputting a control signal for performing inspection, generating and outputting a mask control signal for controlling a mask for adjusting transmission of light emitted from the display screen based on the stored inspection procedure, and Inspecting a display screen of an inspection object in which inspection is performed by the inspection control signal based on the stored inspection procedure and light transmission is adjusted by the mask control signal, inspection based on the inspection procedure, and A process of generating and storing an expected display screen expected to be displayed by controlling the mask is compared with the captured display screen and the expected display screen. Target is characterized in that and a step of determining whether operating normally.

  According to the first aspect of the present invention, in the inspection device for inspecting the operation function by the display screen in the display device capable of displaying a moving image, the inspection procedure storage means for storing the procedure relating to the inspection, and the stored inspection procedure An inspection control signal generating / outputting means for generating and outputting a control signal for executing an inspection based on the mask; and a mask control signal for controlling a mask for adjusting transmission of light emitted from the display screen based on the stored inspection procedure. A mask control signal generating / outputting means for generating and outputting; and a display screen of an inspection object in which inspection is executed by the inspection control signal based on the stored inspection procedure and light transmission is adjusted by the mask control signal Display screen imaging means for imaging, and an expected display screen expected to be displayed by inspection based on the inspection procedure and control of the mask is generated and stored An expected display screen generation storage unit, and an inspection determination unit that compares the captured display screen and the expected display screen to determine whether or not the inspection target is operating normally. A test in which the above-mentioned means is controlled by a computer to record the operation of the remote controller, the image taken by the camera, the timing of image determination, the mask data corresponding to the operation of the remote controller and the expected image before execution of the inspection. Prepare a scenario, save it in the inspection device, follow the inspection procedure when receiving an inspection start command, operate the remote control in the case of a remote control operation command, control the mask in the case of a determination operation, capture with a camera, and determine the image By performing processing in sequence, a display device capable of displaying a moving image such as a television can be operated with a remote control or the like without performing advanced image processing. It can be realized an inspection apparatus capable of automatically checks whether successful.

  Moreover, according to invention of Claims 2-4, in addition to the said common effect obtained by the invention of Claim 1, the following effect can be acquired.

  That is, according to the invention described in claim 2, in addition to the effect obtained by the invention described in claim 1, the mask control signal is transmitted between the display screen to be inspected and the display screen imaging means. By using a signal for controlling the provided liquid crystal shutter, the liquid crystal shutter can be controlled to easily perform automatic inspection.

  According to the invention described in claim 3, in addition to the effect obtained by the invention described in claim 1, the mask control signal is a signal for controlling a backlight for adjusting the brightness of the display screen to be inspected. By doing so, it is possible to easily perform automatic inspection by controlling the backlight.

  According to the invention described in claim 4, in addition to the effect obtained by the invention described in claim 1, the mask control signal is a signal for controlling a driver for displaying the display screen of the inspection object. Thus, the automatic inspection can be easily performed by controlling the display screen.

  According to the fifth aspect of the present invention, in the inspection method for inspecting the operation function by the display screen in the display device capable of displaying a moving image, based on the step of storing the procedure relating to the inspection and the stored inspection procedure Generating and outputting a control signal for executing inspection, and generating and outputting a mask control signal for controlling a mask for adjusting transmission of light emitted from the display screen based on the stored inspection procedure, and Imaging a display screen of an inspection object in which inspection is executed by the inspection control signal based on the stored inspection procedure and light transmission is adjusted by the mask control signal; and inspection based on the inspection procedure And a step of generating and storing an expected display screen expected to be displayed by controlling the mask, and comparing the captured display screen and the expected display screen. And determining whether or not the inspection object is operating normally, by controlling each of the functioning means by a computer to perform operation of the remote controller, imaging by the camera, and image determination before executing the inspection. Prepare a test scenario that records timing, mask data corresponding to the remote control operation and the expected image as a result, save it in the inspection device, and follow the inspection procedure when receiving the inspection start command. Performs advanced image processing on a display device that can display a moving image, such as a television, by performing operations in the order of mask control, camera imaging, and image determination in the case of a determination operation. In addition, it is possible to realize an inspection method capable of automatically inspecting whether or not the operation of the remote controller or the like has been normally executed.

(First embodiment)
Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 to 2 are examples of embodiments of the present invention. FIG. 1 is an explanatory diagram showing the overall configuration of an inspection apparatus according to an embodiment of the present invention. FIG. 2 is a configuration of a computer constituting the inspection apparatus. FIG.

  As shown in FIG. 1, the inspection apparatus 21 according to the present embodiment mainly includes a remote controller 24, a liquid crystal shutter 25, a camera 23, and a computer 22 that controls these, and the liquid crystal television 11 capable of displaying a moving image. The operation function by the display screen of the display (display device) 12 is inspected.

The camera 23 is a display screen imaging unit for imaging the display 12.
The liquid crystal shutter 25 is a mask control unit that is disposed in front of the display 12 and applies a mask to the liquid crystal panel of the display 12.
Here, the mask is to hide an arbitrary portion of the displayed image by blocking light from the display 12.

  The liquid crystal television 11 to be inspected includes a display 12 and a remote control receiver 13. The remote controller 24 is an infrared signal output means. When the liquid crystal television 11 receives the signal output from the remote control 24 by the remote control receiving unit 13, another display content is displayed on the broadcast program displayed as a moving image on the display 12 according to the operation content of the remote control 24. It has become.

  The inspection device 21 captures a change in the display content of the display 12 by the camera 23, and the computer 22 compares the captured image with an expected display image stored in the computer 22 before the inspection is started. It is determined whether 11 is operating normally.

Next, the computer 22 constituting the inspection apparatus 21 will be described.
As illustrated in FIG. 2, the computer 22 includes a scenario processing unit 31, a remote control signal control unit 32, a mask processing unit 33, an imaging processing unit 34, a determination processing unit 35, a scenario holding unit 41, a mask data holding unit 42, and a captured image. A holding unit 43, an expected image holding unit 44, an edited image holding unit 45, an input device 51, and a result display / storage unit 52 are configured.

  The scenario holding unit 41 is an inspection procedure storage unit that stores a scenario in which a procedure for inspecting an inspection target is recorded.

  The mask data holding unit 42 is a mask control information storage unit that stores, as a mask data file, an image of a mask to be applied to a display screen corresponding to a remote control operation during an inspection procedure.

  The input device 51 is an input means for the user to select a scenario of the procedure to be inspected from the scenarios stored in the scenario holding unit 41 and to issue an inspection start command.

  The captured image holding unit 43 is a captured image storage unit that stores an image captured by the camera 23.

  The expected image holding unit 44 is an expected display screen generation storage unit that generates an expected display screen, which is a display result corresponding to the remote control operation in the scenario, and stores the expected display screen before starting the examination.

  The scenario processing unit 31 outputs an inspection control signal to the remote control signal control unit 32 to the mask processing unit 33, the imaging processing unit 34, and the determination processing unit 35 according to the contents of the scenario extracted from the scenario holding unit 41 and the execution time. Inspection control signal generation output means.

Here, the inspection control signal for the remote control signal control unit 32 is a key code indicating how the remote control 24 outputs infrared rays and an execution command.
The inspection control signal for the mask processing unit 33 is a mask data file name for executing the mask data contents to the liquid crystal shutter 25 and an execution command.
The inspection control signal for the imaging processing unit 34 is an execution command that causes the camera 23 to capture an image of the display 12 and cause the captured image holding unit 43 to store the captured image.
The inspection control signal for the determination processing unit 35 is an execution command for extracting a captured image from the captured image holding unit 43, a file name indicating which expected display image is to be extracted from the expected image holding unit 44, and a determination execution command.

  The remote control signal control unit 32 is an infrared signal generation unit that outputs an infrared control signal corresponding to a designated key code to the remote control 24 when an inspection control signal is sent from the scenario processing unit 31.

  When the inspection control signal is sent from the scenario processing unit 31, the mask processing unit 33 outputs a mask data file extracted from the mask data holding unit 42 as a mask control signal, and follows the mask data extracted by the liquid crystal shutter 25. And a mask control signal generating / outputting means for instructing to adjust the light.

  When the inspection control signal is sent from the scenario processing unit 31, the imaging processing unit 34 captures the display screen masked by the liquid crystal shutter 25 and stores the captured image in the captured image holding unit 43. The camera 23 is instructed.

  When the inspection control signal is sent from the scenario processing unit 31, the determination processing unit 35 takes out the expected image file designated from the expected image holding unit 44, and picks up the expected image and the captured image taken out from the captured image holding unit 43. This is a test determination unit that creates a difference image by superimposing the images and determines whether or not these two images match. The determination result is sent to the result display / storage unit 52.

  The result display / save unit 52 displays the scenario determination result sent from the determination processing unit 35 on the display of the computer 22.

Next, the scenario processing unit 31 constituting the computer 22 will be described with reference to the drawings.
FIG. 3 is a block diagram showing the configuration of the scenario processing unit according to this embodiment.
As illustrated in FIG. 3, the scenario processing unit 31 includes an input processing unit 311, a scenario reading unit 312, a scenario interpretation unit 313, a scenario execution unit 314, and a timer 315.

  The input processing unit 311 receives an inspection start command from the input device 51 and instructs the scenario reading unit 312 to read a scenario.

  When receiving a command from the input processing unit 311, the scenario reading unit 312 takes out a test scenario from the scenario holding unit 41, reads one line of the test scenario, and passes it to the scenario interpretation unit 313.

  The scenario interpretation unit 313 interprets the operation execution time, operation classification, and operation content from the instruction read by the scenario reading unit 312 and passes the operation execution time, scenario execution unit 314 operation classification, and operation content to the timer 315. .

  The timer 315 measures the operation execution time passed from the scenario interpretation unit 313 and notifies the scenario execution unit 314 of it.

  The scenario execution unit 314 receives the command interpreted by the scenario interpretation unit 313, and outputs an inspection control signal to each control unit according to the operation classification and operation content when the operation execution time is notified from the timer 315. Here, the operation classification indicates whether the operation written in the scenario is a remote control operation or a determination operation. The operation content indicates a key code of the remote control when the operation classification written in the scenario is a remote control operation.

  When the operation classification is remote control operation, the scenario execution unit 314 outputs the inspection control signal written in the operation content to the remote control signal control unit 32.

  On the other hand, when the operation classification is a determination operation, the scenario execution unit 314 outputs the inspection control signal written in the operation content in the order of the mask processing unit 33, the imaging processing unit 34, and the determination processing unit 35.

Next, processing steps for inspecting an operation function on the display screen by the inspection apparatus 21 according to the present embodiment will be described based on a flowchart.
FIG. 4 is a flowchart showing a processing flow when an inspection is performed by the inspection apparatus according to the present embodiment.

  First, a scenario file for executing an inspection before starting the inspection is stored in the scenario holding unit 41, the mask data is stored in the mask data holding unit 42, and the expected image is stored in the expected image holding unit 44.

  When the inspection start command is passed from the keyboard input unit to the scenario processing unit, in step S11, the scenario processing unit 31 retrieves the scenario file designated at the start of the inspection from the scenario holding unit 41, and proceeds to step S12.

  In step S12, the scenario processing unit 31 reads one line of the scenario, and proceeds to step S13.

  In step S13, it is determined whether there is a scenario read by the scenario processing unit 31 (Y) or not (N). If no scenario exists, the test ends. On the other hand, if a scenario exists, the process proceeds to step S14.

  In step S14, the scenario processing unit 31 determines whether the time from the start of the test matches the instruction execution time (Y) or not (N). If they match, the process proceeds to step S15. Return to and repeat until the instruction execution time.

  In step S15, it is determined whether the execution instruction of the scenario read by the scenario processing unit 31 is a remote control operation (Y) or not (N). If the remote control operation is performed, the process proceeds to step S16. Proceed to S17.

  In step S16, the scenario processing unit 31 sends an inspection control signal to the remote control signal control unit 32, outputs a corresponding infrared signal, and returns to step S12 after completion.

  In step S17, the scenario processing unit 31 determines whether the execution instruction of the scenario is a determination operation (Y) or not (N). If it is a determination operation, the process proceeds to step S18, and if not, the process proceeds to step S12. Return.

  In step S18, the scenario processing unit 31 sends an inspection control signal to the mask processing unit 33, takes out the mask data designated in the scenario determination operation from the mask data holding unit 42, and controls the liquid crystal shutter 25 to display the display 12. Then, the control for applying a mask is performed, and the process proceeds to step S19 after completion.

  In step S19, the scenario processing unit 31 sends an inspection control signal to the imaging processing unit 34, images the masked display 12 with the camera 23, and stores the captured image in the captured image holding unit 43. After completion, the process proceeds to step S20.

  In step S <b> 20, the scenario processing unit 31 sends an inspection control signal to the determination processing unit 35, and in the determination of the captured image stored in the captured image holding unit 43 and the scenario stored in the expected image holding unit 44. The designated expected image is taken out, and the process proceeds to step S21 after the operation is completed.

  In step S21, the two images taken out by the determination processing unit 35 are superimposed to create a difference image, and a filter based on a threshold value is applied in consideration of image shift, and the process proceeds to step S22 after completion.

  In step S22, it is determined that the two images match if the ratio of the difference after the determination processing unit 35 applies the filter to the entire image falls within the range specified by the scenario. It progresses to step S23 after completion | finish.

  In step S23, the result display / storage unit 52 displays the determination result output by the determination processing unit 35 on the display, creates and stores a file, and returns to step S12 after the end.

Here, mask control in the present embodiment will be described with reference to the drawings.
FIG. 5 is an explanatory view showing an example of mask control in the liquid crystal television according to the present embodiment, and (a) is a simplified explanatory view showing an example of a display image appearing on the video screen of the display of the liquid crystal television. b) is an explanatory diagram showing an expected image for evaluating the display image, (c) is an explanatory diagram showing mask data for masking the video screen, and (d) is an enlarged view of a part of the mask data. FIG. 9E is a partial detail view showing the enlarged mask view, and FIG. 8E is an explanatory view showing a state in which the mask data is superimposed on the video screen.

  When the liquid crystal television 11 according to the present embodiment executes a function by operating the remote controller 24, another display content is displayed on a moving image such as a broadcast program on the display screen of the display 12.

  For example, the channel number is displayed when the channel button on the remote controller 24 is pressed, the menu bar is displayed when the menu button is pressed, and the EPG screen is displayed when the program guide button is pressed.

  As shown in FIG. 5A, the video screen 61 displayed on the display 12 appears on the broadcast program display screen by the above operation when any button of the remote controller 24 is operated, for example. A display image 61a is displayed.

  In this display state, it is preferable to check whether the newly displayed figure (display image 61a) is correctly displayed in order to evaluate whether the expected screen is displayed after the remote control operation.

Therefore, as an expected display image, as shown in FIG. 5B, an expected image 62 is prepared by removing only the graphic as an evaluation target and removing the entire portion other than the graphic.
Even when a character is targeted, it can be handled in the same manner by regarding the character as a figure.

The mask data 63 is an image for masking the video screen 61 as shown in FIG. The mask data 63 is created so that a portion that transmits light in dot units is expressed as white and a portion that does not transmit light is expressed as black based on the expected image 62 before the inspection is executed.
Then, as an example in which a part of the mask data 63 shown in FIG. 5D is enlarged, the mask data 63 as a whole is specified by designating whether or not to transmit light one pixel at a time, as shown in the mask enlarged view 64. It is comprised so that it may become.

  By arranging the mask data 63 configured as described above on the video screen 61 and capturing an image, a mask that is not necessary for evaluation is masked as shown in the overlay diagram 65 shown in FIG. Can be obtained.

  As described above, since the mask data 63 can narrow the portion that transmits the light to only the graphic portion necessary for the evaluation, it is possible to obtain a captured image that eliminates the influence of other portions of the display screen as much as possible. It becomes possible. As a result, even when the display content including graphics is semi-transparently combined with alpha blending on the moving picture of the broadcast program, the influence of the moving picture of the semi-transparent broadcast program can be reduced as much as possible.

Next, the inspection of the remote control operation function by the inspection apparatus 21 according to the present embodiment will be described with reference to the drawings.
FIG. 6 is an explanatory view showing an example of a display image on the liquid crystal television according to the present embodiment, wherein (a) is a mask on the video screen displayed on the display of the liquid crystal television when the remote control operation function is functioning normally. An explanatory diagram showing an example of a captured image in which data is superimposed, (b) is an explanatory diagram showing an example of a difference image created from the captured image and an expected image, and (c) is a remote control operation function not functioning normally Explanatory drawing which shows another example of the captured image which overlapped mask data on the video screen displayed on the display of the said liquid crystal television at the time, (d) shows an example of the difference image produced from the said captured image and an expected image It is explanatory drawing.

  When the remote control operation function functions normally, the captured image (success) 66 obtained by arranging the mask data 63 on the video screen 61 is displayed as a display image 61a and this display as shown in FIG. An image is obtained by superimposing the expected image 62 from which the entire portion of the image 61a is removed.

The difference image (success) 67 obtained by taking the difference when the expected image 62 and the captured image 66 are superimposed at this time becomes a pure white difference image as shown in FIG.
This means that the exact same image as the expected image 62 has been captured, and it can be determined that the remote control operation has functioned normally.

  On the other hand, as shown in FIG. 6C, the captured image (failure) 68 when the remote control operation function is not functioning normally is a display image 61a and an expected image 62 obtained by removing the entire portion of the display image 61a. The image will be different from the one that is overlaid. In the present embodiment, a portion corresponding to the display image 61a is in a state of being whitened, and a central portion thereof is rounded and masked.

  The difference image (failure) 69 obtained by taking the difference when the expected image 62 and the captured image 66 are superimposed at this time is not a pure white difference image, as shown in FIG. In addition, a difference area exists in a portion corresponding to the display image 61 a, and the difference image is different from the difference image 67. That is, it can be determined that the remote control operation is not functioning normally.

  Since it comprised as mentioned above, according to this embodiment, while arrange | positioning the mask data 63 on the video screen 61 and obtaining a picked-up image, it superimposes and the expected image corresponding to the picked-up image. Based on the difference image, it can be easily determined whether or not the remote control operation functions normally.

  In general, when an image is taken by a camera, the exact same image is not always obtained as shown in the present embodiment. Therefore, even if the remote control operation functions normally, a white differential image is obtained. It is not necessarily obtained.

  Therefore, an upper limit is set in advance for the ratio of the difference area that appears in the difference image to the whole, and if it falls within that range (within the upper limit value), it is determined that it has functioned normally. May be.

Hereinafter, an inspection procedure scenario in the inspection apparatus 21 according to the present embodiment will be described with reference to the drawings.
FIG. 7 is an explanatory diagram showing the contents of a scenario of an inspection procedure in the inspection apparatus according to the present embodiment.

One execution command in the scenario of the inspection procedure in the inspection apparatus 21 includes, for example, an execution time 71, an operation classification 72, and an operation content 73 as shown in FIG.
The execution time 71 represents the elapsed time from the start of inspection.
The operation classification 72 indicates whether the operation is a remote control operation or a determination operation.
The operation content 73 is information for performing a specific operation on the operation classification 72.

  For example, when the operation classification 72 is a remote control operation, a key code is written in the operation content 73 in order to perform the remote control operation.

  When the operation classification 72 is a determination operation, the operation content 73 includes a mask data file name, an expected display image file name, and a determination value to be used for determination.

  Here, the determination value is an upper limit value that permits the ratio of the difference area to the entire image when determining whether or not the two images of the captured image and the expected image match.

  By setting it as the above scenarios, when the difference area which appeared in the difference image is settled in the setting range (within the upper limit value), it can be determined that it has functioned normally.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to the drawings.
FIG. 8 is an explanatory diagram showing the overall configuration of the inspection apparatus according to the second embodiment of the present invention.
In FIG. 8, the same components as those in the inspection apparatus according to the first embodiment shown in FIG.

The inspection apparatus 121 according to the present embodiment uses a display that can emit light pixel by pixel as an inspection target.
For example, there are an organic EL (electro-luminescence) display, a surface electric field display (SED), a plasma display, and a liquid crystal display using an LED backlight.

  As shown in FIG. 8, the inspection device 121 uses a light emission control unit 26 to control the light emitting unit (backlight) 14 as a mask control unit for masking the display screen of the display 12, thereby displaying the light on the display screen. The adjustment is performed.

  The configuration and operation of the computer 22 constituting the inspection device 121 have the same configuration as the inspection device 21 of the first embodiment described above, and realize the same operation.

The mask processing unit 33 in the computer 22 has a function of sending a mask control signal to the light emission control unit 26 and a function of adjusting a portion of the light emitting unit 14 that emits light and a portion that does not emit light.
With this configuration, it is possible to create a place that shines on a display screen of the display 12 and a place that does not shine.

  Since it comprised as mentioned above, according to this embodiment, based on the difference image obtained by superimposing the expected image corresponding to the captured image imaged with the camera 23 similarly to 1st Embodiment mentioned above, it is easy. It is possible to determine whether the remote control operation functions normally.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to the drawings.
FIG. 9 is an explanatory diagram showing the overall configuration of the inspection apparatus according to the third embodiment of the present invention.
In FIG. 9, the same components as those in the inspection apparatus according to the first embodiment shown in FIG.

  The inspection apparatus 221 according to the present embodiment includes a memory area (storage means) capable of copying information in the frame buffer separately from the frame buffer (storage means) in which screen information to be displayed on the display 12 is recorded. Further, a driver 15 for displaying an image on the display 12 based on the image information copied to the memory area is provided.

  The configuration and operation of the computer 22 constituting the inspection device 221 has the same configuration as the inspection device 21 of the first embodiment described above, and realizes the same operation.

The mask processing unit 33 in the computer 22 rewrites the function to send a mask control signal to the driver 15 and the contents to be displayed on the display 12 by directly embedding the mask data on the memory copied in the memory area. And a function of making the driver 15 refer to
With this configuration, it is possible to create a place that shines on a display screen of the display 12 and a place that does not shine.

  Since it comprised as mentioned above, according to this embodiment, based on the difference image obtained by superimposing the expected image corresponding to the captured image imaged with the camera 23 similarly to 1st Embodiment mentioned above, it is easy. It is possible to determine whether the remote control operation functions normally.

  Note that the inspection apparatus and the inspection method of the present invention are not limited to the above-described embodiments, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

It is explanatory drawing which shows the whole structure of the test | inspection apparatus which concerns on 1st Embodiment of this invention. It is a block diagram which shows the structure of the computer which comprises the said inspection apparatus. It is a block diagram which shows the structure of the scenario process part of the said inspection apparatus. It is a flowchart which shows the processing flow at the time of test | inspecting with the said inspection apparatus. (A) is a simplified explanatory view showing an example of a display image appearing on the video screen of the liquid crystal television display according to the present embodiment, (b) is an explanatory view showing an expected image for evaluating the display image, (c) is an explanatory view showing mask data for applying a mask to the video screen, (d) is a partial detail view showing an enlarged mask view in which a part of the mask data is enlarged, and (e) is a mask on the video screen. It is explanatory drawing which shows the state which accumulated the data. (A) is explanatory drawing which shows an example of the captured image which superimposed the mask data on the video screen displayed on the display of the said liquid crystal television when a remote control operation function functions normally, (b) is the said captured image and expectation An explanatory view showing an example of a difference image created from an image, (c) is an image of a captured image obtained by overlaying mask data on a video screen displayed on the display of the liquid crystal television when a remote control operation function does not function normally An explanatory view showing another example, (d) is an explanatory view showing an example of a difference image created from the captured image and the expected image. It is explanatory drawing which shows the content of the scenario of the test procedure in the said test | inspection apparatus. It is explanatory drawing which shows the structure of the whole inspection apparatus which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the whole structure of the inspection apparatus which concerns on 3rd Embodiment of this invention.

Explanation of symbols

11 LCD TV 12 Display (display device)
13 Remote Control Receiver 15 Driver 21, 121, 221 Inspection Device 22 Computer 23 Camera (Display Screen Imaging Means)
24 remote control 25 liquid crystal shutter 31 scenario processing section (inspection control signal generation output means)
32 Remote control signal control unit 33 Mask processing unit (mask control signal generation / output means)
34 Imaging Processing Unit 35 Determination Processing Unit (Inspection Determination Unit)
311 Input Processing Unit 312 Scenario Reading Unit 313 Scenario Interpreting Unit 314 Scenario Executing Unit 315 Timer 41 Scenario Holding Unit (Inspection Procedure Storage Unit)
42 Mask Data Holding Unit 43 Captured Image Holding Unit 44 Expected Image Holding Unit (Expectation Display Screen Generation Storage Unit)
45 Edited Image Holding Unit 51 Input Device 52 Result Display / Save Unit 61 Video Screen 61a Displayed Image 62 Expected Image 63 Mask Data 66 Captured Image (Success)
67 Difference image (success)
68 Captured image (failure)
69 Difference image (failure)
71 Execution time 72 Operation classification 73 Operation content

Claims (5)

In an inspection device that inspects an operation function by a display screen in a display device capable of displaying a moving image,
Inspection procedure storage means for storing procedures relating to the inspection;
Inspection control signal generation output means for generating and outputting a control signal for executing an inspection based on the stored inspection procedure;
Mask control signal generation output means for generating and outputting a mask control signal for controlling a mask for adjusting transmission of light emitted from the display screen based on the stored inspection procedure;
Display screen imaging means for imaging a display screen of an inspection target in which an inspection is executed by the inspection control signal based on the stored inspection procedure and light transmission is adjusted by the mask control signal;
An expected display screen generation storage means for generating and storing an expected display screen expected to be displayed by the inspection based on the inspection procedure and the control of the mask;
Inspection determination means for comparing the imaged display screen with the expected display screen to determine whether or not the inspection target is operating normally;
An inspection apparatus comprising:   The inspection apparatus according to claim 1, wherein the mask control signal is a signal for controlling a liquid crystal shutter provided between the display screen to be inspected and the display screen imaging unit.   The inspection apparatus according to claim 1, wherein the mask control signal is a signal for controlling a backlight that adjusts brightness of a display screen to be inspected.   The inspection apparatus according to claim 1, wherein the mask control signal is a signal for controlling a driver for displaying the display screen to be inspected. In an inspection method for inspecting an operation function by a display screen in a display device capable of displaying a moving image,
Memorizing a procedure related to the inspection;
Generating and outputting a control signal for performing an inspection based on the stored inspection procedure;
Generating and outputting a mask control signal for controlling a mask for adjusting transmission of light emitted from the display screen based on the stored inspection procedure;
Imaging a display screen of an inspection object in which inspection is performed by the inspection control signal based on the stored inspection procedure and light transmission is adjusted by the mask control signal;
Generating and storing an expected display screen expected to be displayed by inspection based on the inspection procedure and control of the mask;
Comparing the imaged display screen with the expected display screen to determine whether the inspection target is operating normally;
An inspection method comprising:

Images