KR102585555B1 - Self diagnosis apparatus and method for synthetic image controller - Google Patents

Abstract

Disclosed is a self-diagnosis device and method for a synthetic image controller. In the present invention, the reliability of the video controller can be confirmed through a test of the video controller, and the cause of the video failure device can be confirmed according to the results of the video test of the video controller through the video tester.

Description

Self-diagnosis device and method for synthetic image controller {SELF DIAGNOSIS APPARATUS AND METHOD FOR SYNTHETIC IMAGE CONTROLLER}

The present invention relates to a self-diagnosis device and method for a composite image controller, and more specifically, to a self-diagnosis device and method for a composite image controller that confirms the reliability of the controller through testing the image controller.

Recently, devices for consumer convenience as well as consumer satisfaction with the power performance of automobiles have become increasingly popular.

As an example, the spread of front/rear cameras for parking assistance and integrated display devices that can check the status of the car at a glance is becoming common.

When parking in the front or rear, the driver can see obstacles around the vehicle and know the distance to the obstacles through the distance measurement sensor and display device provided at the front and rear of the vehicle.

Current surrounding surveillance utilizes 2 or 4 channels to synthesize surrounding images. If there is a problem with the synthesis controller, the output signal is not output, so the display device in the vehicle does not display anything or displays an external signal input standby mode. There is a problem.

In addition, it is difficult to check the reliability of the image synthesized by the video controller, and when a failure occurs in the video controller, there is a problem in finding the cause of the failure.

Korean Patent Publication No. 10-1481648 (Title of invention: Device that provides reliable images around a vehicle)

In order to solve this problem, the purpose of the present invention is to provide a self-diagnosis device and method for a composite image controller that confirms the reliability of the image controller through testing of the image controller.

In order to achieve the above object, an embodiment of the present invention is a self-diagnosis device for a composite image controller, which performs self-diagnosis by comparing the voltage value and current value for the operation of the image controller with a preset reference value, and performs a self-diagnosis in the image tester. An image controller that outputs a composite image generated by combining communication test results for a transmitted communication test signal, an input image diagnosis result for a test image signal transmitted from the image tester, and images of at least two channels to the image tester. ; and an image tester that transmits a communication test signal and a test image signal to the image controller and verifies the reliability of the image controller by analyzing communication test results, input image diagnosis results, and image synthesis results transmitted from the image controller. Includes.

In addition, the video controller according to the above embodiment includes a control unit that, when receiving an on/off control command of a channel to be tested from the video tester, controls the operation of each channel of the video controller according to the received control command; a communication unit that, when receiving an arbitrary packet signal for a communication test from the video tester, generates a packet signal identical to the received packet signal as a result of the communication test and transmits it to the video tester; an internal diagnosis unit that performs self-diagnosis by comparing voltage and current values for operation of the image controller with preset reference values when power is supplied; an image input unit that verifies the signal input of the test image generated by the image tester, generates an input image diagnosis result, and transmits the generated input image diagnosis result to the image tester through the communication unit; an image synthesis unit that synthesizes images of at least two channels according to a preset position based on the signal of the input test image; and an image output unit that transmits the synthesized image to an image tester.

In addition, the video tester according to the above embodiment includes a tester control unit that outputs an on/off control command of the test target channel to the video controller; a tester communication unit that randomly generates an arbitrary packet signal for a communication test, outputs it to the image controller, and receives the packet signal generated from the image controller, a self-diagnosis result, and an input image diagnosis result; a tester video output unit that generates a test video signal for testing and outputs it to the video controller; a tester image input unit that receives the synthesized image from the image controller and evaluates it according to preset conditions; and a test output unit that outputs the evaluation result, packet signal, self-diagnosis result, and input image diagnosis result.

In addition, the tester image input unit according to the above embodiment predicts a composite image of the test image output from the tester video output unit, and compares and evaluates the identity rate between the predicted composite image and the image synthesized by the image controller. do.

In addition, an embodiment of the present invention is a self-diagnosis method of a composite image controller, which includes: a) detecting the voltage and current values at which the image controller operates when power is supplied, and matching the detected voltage and current values to preset reference values; performing internal diagnosis through comparative self-diagnosis; b) when the video controller receives an arbitrary packet signal for a communication test from the video tester, generating a packet signal identical to the received packet signal as a result of the communication test and transmitting it to the video tester; c) when the image controller receives a test image signal from an image tester, generating a corresponding input image diagnosis result; d) When the video controller receives an on/off control command for the channel under test from the video tester, it controls the operation of each channel of the video controller according to the received control command and responds to the signal of the test video input from the video tester. synthesizing images of at least two channels according to a preset position based on the input image diagnosis result and transmitting the synthesized image to the image tester; and e) the image tester receiving the synthesized image from the image controller, evaluating it according to preset conditions, and outputting the evaluation result, packet signal, self-diagnosis result, and input image diagnosis result.

In addition, in step a) according to the above embodiment, a-1) the image controller supplies power to the control unit through the internal diagnosis unit to detect the voltage value and current value, and sets the detected voltage value and current value to the preset voltage value of the control unit. /Comparing with a reference value for determining current; a-2) If the comparison result in a-1) is normal, the internal diagnostic unit supplies power to the image input unit to detect the voltage value, and compares the detected voltage value with a preset reference value for determining the voltage of the image input unit. ; a-3) If the comparison result of a-2) is normal, the internal diagnosis unit supplies power to the image output unit to detect the voltage value, and compares the detected voltage value with a preset reference value for determining the voltage of the image output unit; and a-4) if the comparison result of a-3) is normal, the internal diagnosis unit generates an internal diagnosis result.

In addition, the internal diagnosis unit according to the above embodiment repeats the comparison process a certain number of times if the result of comparing the sensed voltage value and current value is abnormal, but if the number of retries is greater than a preset reference value, the internal diagnosis is terminated; It is characterized by being reflected in the internal diagnosis results.

In addition, step b) according to the above embodiment includes the steps of b-1) the video controller receiving an arbitrary packet signal for a communication test from the video tester; b-2) the video controller performing a parity bit check of the received packet signal and, if it is determined to be normal, generating a packet signal identical to the received packet signal as a result of a communication test; and b-3) the video controller generating a communication test result.

In addition, if it is determined to be abnormal as a result of the determination in step b-2) according to the above embodiment, the parity bit check through re-input of the communication packet is repeated a certain number of times, but the number of abnormal determinations through retries is greater than or equal to the preset reference value. In this case, the communication test is terminated and reflected in the communication test results.

In addition, step c) according to the above embodiment includes c-1) the image controller receiving a signal of a test image from an image tester; c-2) the video controller determining whether the input video signal for each channel is input normally; and c-3) generating an input image diagnosis result if the determination result of c-2) is normal.

In addition, if the determination result of c-2) according to the above embodiment is abnormal, each channel is reset to determine normal input through re-input of the input video signal, and the number of abnormality determinations through retries is greater than or equal to the preset reference value. In this case, the input image diagnosis is terminated and the input image diagnosis result is reflected.

In addition, step e) according to the above embodiment includes steps e-1) where the image tester receives a composite image output from an image controller; e-2) predicting a synthesized image of the test image output by the image tester to an image controller, and comparing the identity rate between the predicted synthesized image and the image synthesized by the image controller; and e-3) determining that the comparison result is normal if the identity rate is greater than a preset reference value and outputting a composite image diagnosis result.

The present invention has the advantage of being able to confirm the reliability of the video controller through testing the video controller.

Additionally, the present invention has the advantage of being able to confirm the cause of a failure of the video controller according to the results of an video test of the video controller through an video tester.

1 is a block diagram showing a self-diagnosis device for a composite image controller according to an embodiment of the present invention.
Figure 2 is a flowchart illustrating a self-diagnosis method of a composite image controller according to an embodiment of the present invention.
Figure 3 is a flowchart illustrating the internal diagnosis process of the self-diagnosis method of the composite image controller according to the embodiment of Figure 2.
Figure 4 is a flowchart illustrating the communication diagnosis process of the self-diagnosis method of the composite image controller according to the embodiment of Figure 2.
Figure 5 is a flowchart illustrating the image input unit diagnosis process of the self-diagnosis method of the composite image controller according to the embodiment of Figure 2.
Figure 6 is a flowchart illustrating the image synthesis diagnosis process of the self-diagnosis method of the synthesis image controller according to the embodiment of Figure 2.

Hereinafter, the present invention will be described in detail with reference to preferred embodiments of the present invention and the accompanying drawings, assuming that the same reference numerals in the drawings refer to the same components.

Before describing specific details for implementing the present invention, it should be noted that configurations that are not directly related to the technical gist of the present invention have been omitted to the extent that they do not distract from the technical gist of the present invention.

In addition, the terms or words used in this specification and claims have meanings and concepts that are consistent with the technical idea of the invention, based on the principle that the inventor can define the concept of appropriate terms in order to explain his or her invention in the best way. It should be interpreted as

In this specification, the expression that a part “includes” a certain element does not mean excluding other elements, but means that it may further include other elements.

In addition, terms such as "‥unit", "‥unit", and "‥module" refer to a unit that processes at least one function or operation, which can be divided into hardware, software, or a combination of the two.

In addition, the term "at least one" is defined as a term including singular and plural, and even if the term "at least one" does not exist, each component may exist in singular or plural, and may mean singular or plural. This can be said to be self-evident.

In addition, whether each component is provided in singular or plural form may be changed depending on the embodiment.

Hereinafter, a preferred embodiment of a self-diagnosis device and method for a composite image controller according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a block diagram showing a self-diagnosis device for a composite image controller according to an embodiment of the present invention.

Referring to FIG. 1, a self-diagnosis device for a composite image controller according to an embodiment of the present invention may include an image controller 100 and an image tester 200.

The image controller 100 may perform self-diagnosis by comparing voltage and current values for operation of the image controller 100 with preset reference values.

Additionally, the video controller 100 may perform a communication test on a communication test signal transmitted from the video tester 200 and output a communication test result accordingly.

In addition, the image controller 100 performs an input test on the signal of the test image transmitted from the image tester 200 and outputs the resulting input image diagnosis result and a composite image generated by combining images of at least two channels. It can be output using the video tester 200.

For this purpose, the image controller 100 includes a control unit 110, a communication unit 120, an internal diagnosis unit 130, an image input unit 140, an image synthesis unit 150, and an image output unit 160. ) may be configured to include.

When the control unit 110 receives an on/off control command for a channel to be tested from the image tester 200, it controls the operation of each channel of the image controller 100 for generating a composite image according to the received control command. .

When the communication unit 120 receives an arbitrary packet signal for a communication test from the video tester 200, it can generate a packet signal identical to the received packet signal as a result of the communication test and transmit it to the video tester 200. .

That is, the communication unit 120 performs a parity bit check of the received packet signal to determine whether it is normal. If it is determined to be normal, the communication unit 120 generates a packet signal identical to the received packet signal as a result of the communication test, and the image tester 200 ) can be transmitted.

In addition, if the communication unit 120 determines that the parity bit of the received packet signal is abnormal, it may repeat the parity bit check of the received packet a certain number of times through a re-input request and a re-input request. .

Additionally, if the number of abnormality determinations through retries is greater than or equal to a preset reference value, the communication unit 120 may terminate the communication test and transmit the resulting communication test results to the video tester 200.

When power is supplied, the internal diagnosis unit 130 can perform internal diagnosis through self-diagnosis by comparing voltage and current values for operation of the image controller 100 with preset reference values.

That is, the internal diagnostic unit 130 detects the voltage value and current value of the control unit 110 using the supplied power, and compares the detected voltage value and current value with the preset reference value for voltage/current judgment of the control unit. This allows self-diagnosis of normal operation.

In addition, the internal diagnosis unit 130 supplies power to the image input unit 140 to detect the voltage value, and compares the detected voltage value with a preset reference value for determining the voltage of the image input unit to self-diagnose whether it is operating normally. You can.

In addition, the internal diagnosis unit 130 supplies power to the image output unit 160 to detect the voltage value, and compares the detected voltage value with a preset reference value for determining the voltage of the image output unit to self-diagnose whether it is operating normally. can do.

Additionally, the internal diagnosis unit 130 may generate an internal diagnosis result and transmit it to the imaging tester 200.

The image input unit 140 may check whether the signal of the test image generated by the image tester 200 is properly input, and may generate an input image diagnosis result by reflecting the verification result.

That is, when the image input unit 140 receives a test image signal from the image tester 200, it determines whether the input image signal for each channel is normally input and generates an input image diagnosis result.

In addition, if the input video signal is not input normally, the video input unit 140 resets each channel to determine normal input through re-input of the input video signal, and the number of abnormality determinations through retries is set to a preset reference value. If it is abnormal, the input image diagnosis is terminated and then reflected in the input image diagnosis result.

Additionally, the input image diagnosis result generated by the image input unit 140 may be transmitted to the image tester 200 through the communication unit 120 or the image output unit 140.

The image synthesis unit 150 synthesizes images of at least two channels according to a preset position based on the signal of the input test image.

The image output unit 160 may transmit the image synthesized in the image synthesis unit 150 to the image tester 200.

The video tester 200 can transmit a communication test signal and a test video signal to the video controller 100.

Additionally, the image tester 200 can verify the reliability of the image controller 100 by analyzing communication test results, input image diagnosis results, and image synthesis results transmitted from the image controller 100.

For this purpose, the video tester 200 includes a tester control unit 210, a tester communication unit 220, a tester video output unit 230, a tester video input unit 240, and a tester output unit 250. It can be configured.

The tester control unit 210 generates and outputs an on/off control command for the channel under test to the video controller 100.

The tester communication unit 220 may randomly generate an arbitrary packet signal for a communication test and output the generated packet signal to the video controller 100.

Additionally, the tester communication unit 220 may receive a packet signal generated from the video controller 100 and perform evaluation according to the communication test results.

Additionally, the tester communication unit 220 may receive self-diagnosis results and input image diagnosis results from the image controller 100.

The tester image output unit 230 may generate a test image for testing the image controller 100 and output a signal of the test image to the image controller 100.

The tester image input unit 240 may receive the synthesized image from the image controller 100 and evaluate it according to preset conditions.

That is, the tester image input unit 240 predicts a synthesized image of the test image generated by the tester image output unit 230, compares the identity rate between the predicted synthesized image and the image synthesized by the image controller 100, and If the identical rate is, for example, 90% or more, it is evaluated as normal.

The test output unit 250 outputs an evaluation result of the tester image input unit 240, a received packet signal, a self-diagnosis result, and an input image diagnosis result.

The following describes a self-diagnosis method of a composite image controller according to an embodiment of the present invention.

Figure 2 is a flowchart illustrating the self-diagnosis method of the composite image controller according to an embodiment of the present invention, and Figure 3 is a flowchart illustrating the internal diagnosis process of the self-diagnosis method of the composite image controller according to the embodiment of Figure 2. It is a flowchart shown for the purpose, and Figure 4 is a flowchart shown to explain the communication diagnosis process of the self-diagnosis method of the composite image controller according to the embodiment of Figure 2, and Figure 5 is a self-diagnosis of the composite image controller according to the embodiment of Figure 2. It is a flowchart shown to explain the image input unit diagnosis process of the method, and FIG. 6 is a flowchart shown to explain the image synthesis diagnosis process of the self-diagnosis method of the composite image controller according to the embodiment of FIG. 2.

Referring to Figures 1 to 6, the self-diagnosis method of the composite image controller according to an embodiment of the present invention determines the voltage value and current value at which the image controller 100 operates when power is supplied to the image controller 100. , and performs internal diagnosis through self-diagnosis by comparing the detected voltage and current values with preset reference values (S100).

In step S100, the image controller 100 supplies power to the control unit 110 through the internal diagnosis unit 130 (S110) to detect voltage and current values, and sets the detected voltage and current values to preset values. Compare with the reference value for voltage/current judgment of the control unit (S120).

If the comparison result in step S120 is normal, the internal diagnosis unit 130 supplies power to the image input unit 140 (S130) to turn it on, and if the comparison result of the detected voltage value and current value is abnormal, the internal diagnosis unit 130 restarts the operation. The number of attempts is counted and compared with a preset reference value for retry judgment (S121).

As a result of the comparison in step S121, if the number of retries is less than the reference value, the control unit (110, ECU) is reset (S122) and then the comparison between the detected voltage and current values and the reference value for voltage/current judgment is performed again (S120). .

Thereafter, the number of retries is counted, and if the number of retries is greater than the set reference value, the internal diagnosis is terminated and the result is reflected in the internal diagnosis result generated in step S170.

Continuing, in the internal diagnosis process of step S100, the internal diagnosis unit 130 of the image controller 100 detects the voltage value of the image input unit 140, and uses the detected voltage value as a preset reference value for determining the voltage of the image input unit. Compare with (S140) to determine whether it is operating normally.

If the comparison result in step S140 is normal, the internal diagnostic unit 130 supplies power to the image output unit 160 (S150) to turn it on, and if the comparison result of the detected voltage value is abnormal, the number of retries is performed. is counted and compared with a preset reference value for retry judgment (S141).

As a result of the comparison in step S141, if the number of retries is less than the reference value, the video input unit 140 is turned off (S142) and steps S130 and S140 are re-performed.

Thereafter, the internal diagnosis unit 130 counts the number of retries, and if the number of retries is greater than the set reference value, the internal diagnosis is terminated and the result is reflected in the internal diagnosis result generated in step S170.

In addition, in the internal diagnosis process of step S100, the internal diagnosis unit 130 of the image controller 100 detects the voltage value of the image output unit 160, and uses the detected voltage value to determine the voltage of the preset image output unit. Compare with the reference value (S160) to determine whether it is operating normally.

If the comparison result in step S160 is normal, the internal diagnosis unit 130 reflects the result to generate an internal diagnosis result (S170). If the comparison result of the detected voltage value is abnormal, the number of retries is counted and a preset retry is performed. Compare with the reference value for judgment (S161).

As a result of the comparison in step S161, if the number of retries is less than the reference value, the video output unit 160 is turned off (S162) and steps S150 and S160 are re-performed.

Thereafter, the internal diagnosis unit 130 counts the number of retries, and if the number of retries is greater than the set reference value, the internal diagnosis is terminated and the result is reflected in the internal diagnosis result generated in step S170.

Subsequently, when the internal diagnosis process is completed, the image controller 100 may request a communication unit diagnosis process (S200) through the image tester 200, and the image controller 100 may perform the diagnosis through the image tester 200. can be performed.

That is, the video controller 100 receives an arbitrary packet signal for testing from the video tester 200, generates a packet signal identical to the packet signal received as a result of the communication test, and transmits it to the video tester 200 ( S200) You can do it.

In step S200, the video controller 100 receives an arbitrary packet signal for a communication test from the video tester 200 (S210).

The video controller 100 checks the communication packet parity bit of the packet signal received in step S210 and determines whether it is correct (S220).

As a result of the determination in step S220, if it is determined to be normal, a packet signal identical to the received packet signal is generated as a communication test result (S230), and a communication test result is generated (S240).

In addition, if it is determined to be abnormal as a result of the determination in step S220, the video controller 100 requests a retry to perform a parity bit check through re-input of the communication packet, counts the number of retries, and then Compare with the reference value for retry judgment (S221).

As a result of the comparison in step S221, if the number of retries is less than the reference value, re-input of the communication packet is requested and then step S220 is re-performed. If the number of retries is more than the reference value, the communication test is terminated. An abnormal result is the communication test result. Ensure that it is reflected in .

Subsequently, when the communication test process is completed, the image controller 100 may perform an image input unit diagnosis process (S300).

That is, in step S300, the image controller 100 may receive a test image signal from the image tester 200, generate an input image diagnosis result as a result of the image test, and transmit it to the image tester 200.

When the video controller 100 receives a test video signal from the video tester 200 (S310), the video controller 100 determines whether the input video signal input to each channel is normally input (S320).

As a result of the determination in step S320, if the input image signal is normally input, a corresponding input image diagnosis result is generated (S330).

In addition, as a result of the determination in step S330, if the input video signal is not input normally, a retry is requested to re-perform the judgment through re-input of the input video signal, and after counting the number of retries, the mini-set retry is performed. Compare with the reference value for judgment (S321).

As a result of the comparison in step S321, if the number of retries is less than the reference value, each channel is reset (S322), and then step S320 is re-performed by re-inputting the input video signal. If the number of retries is more than the reference value, The test is terminated and abnormal results are reflected in the input imaging diagnosis results.

In addition, when the video controller 100 receives an on/off control command of a channel to be tested from the video tester 200, the video controller 100 controls the operation of each channel of the video controller 100 according to the received control command, and Based on the signal of the test image input from the tester 100, images of at least two channels are synthesized according to a preset position, and the input image diagnosis result and the synthesized image are transmitted to the image tester 200 (S400). .

The image tester 200 receives the synthesized image from the image controller 100 in step S400, evaluates it according to preset conditions, and outputs the evaluation result, packet signal, self-diagnosis result, and input image diagnosis result (S500). do.

In step S500, when the composite image output from the image controller 100 is input (S510), the image tester 200 predicts a composite image of the test image output to the image controller 100, and predicts the synthesized image of the predicted composite image. The identity rate is compared between the image and the composite image input in step S510 (S520).

As a result of the comparison in step S520, if the identity rate is greater than a preset reference value, for example, 90%, the image tester 200 determines the image controller 100 as normal (S530), and if the identity rate is less than the above value, it is judged as abnormal. , A synthetic image diagnosis result according to the judgment is generated and output (S540).

Therefore, the reliability of the video controller can be confirmed through testing of the video controller, and the cause of the video failure device can be confirmed according to the results of the video test of the video controller through the video tester.

As described above, the present invention has been described with reference to preferred embodiments, but those skilled in the art may make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can do it.

In addition, the drawing numbers described in the claims of the present invention are only used for clarity and convenience of explanation and are not limited thereto. In the process of explaining the embodiment, the thickness of the lines shown in the drawings, the size of the components, etc. may be exaggerated for clarity and convenience of explanation.

In addition, the above-described terms are terms defined in consideration of the functions in the present invention, and may vary depending on the intention or custom of the user or operator, so interpretation of these terms should be made based on the content throughout the present specification. .

In addition, even if not explicitly shown or explained, a person skilled in the art to which the present invention pertains can make various modifications including the technical idea of the present invention from the description of the present invention. It is self-evident, and it still falls within the scope of the present invention.

In addition, the above embodiments described with reference to the accompanying drawings are described for the purpose of explaining the present invention, and the scope of the present invention is not limited to these embodiments.

100: video controller 110: control unit
120: Communication unit 130: Internal diagnosis unit
140: video input unit 150: video synthesis unit
160: video output unit 200: video tester
210: tester control unit 220: tester communication unit
230: tester video output unit 240: tester video input unit
250: Tester output unit

Claims (12)

When receiving an on/off control command of a channel to be tested from the video tester 200, a control unit 110 that controls the operation of each channel of the video controller 100 according to the received control command, and the video tester 200 When receiving a random packet signal for a communication test from the communication test result, a packet signal identical to the received packet signal is generated and transmitted to the video tester 200, but parity is achieved through re-input of the communication packet due to abnormality. The communication unit 120 repeats the bit check a certain number of times and terminates the communication test when the number of abnormal determinations through retries is greater than a preset standard value so that the communication test results are reflected, and the operation of the video controller 100 when power is supplied. Self-diagnosis is performed by comparing the voltage and current values with preset reference values, but if the number of retries due to abnormality is more than the preset reference value, internal diagnosis is terminated so that the abnormal results of voltage and current values are reflected. An internal diagnosis unit 130 that checks the signal input of the test image generated by the image tester 200 to generate an input image diagnosis result, and transmits the generated input image diagnosis result to the image tester 120 through the communication unit 120. Transmit to (200), but if it is abnormal, reset each channel and re-determine normal input by re-inputting the input video signal. If the number of abnormality determinations through retries is greater than the preset standard value, input video diagnosis is terminated. An image input unit 140 that reflects the input image diagnosis results, an image synthesis unit 150 that synthesizes images of at least two channels according to a preset position based on the signal of the input test image, and the synthesized An image controller 100 having an image output unit 160 that transmits an image to the image tester 200; and
A tester control unit 210 that outputs an on/off control command for a channel under test to the video controller 100, randomly generates an arbitrary packet signal for a communication test and outputs it to the video controller 100, A tester communication unit 220 that receives packet signals generated from the image controller 100, self-diagnosis results, and input image diagnosis results, and a tester image that generates test image signals for testing and outputs them to the image controller 100. An output unit 230, a tester image input unit 240 that receives the synthesized image from the image controller 100 and evaluates it according to preset conditions, the evaluation result, packet signal, self-diagnosis result, and input image diagnosis result An image tester (200) having a test output unit (250) that outputs a packet signal according to a failure of the image controller, a self-diagnosis result, and an input image diagnosis result. delete delete According to claim 1,
The tester image input unit 240 predicts a synthesized image of the test image output from the tester image output unit 230, and compares and evaluates the identity rate between the predicted synthesized image and the image synthesized by the image controller 100. A self-diagnosis device for a synthetic image controller, characterized in that. a) When power is supplied, the video controller 100 detects the operating voltage and current values and performs internal diagnosis through self-diagnosis by comparing the detected voltage and current values with preset reference values, but the comparison result is If it is abnormal, repeating the comparison process a certain number of times; if the number of retries is more than a preset reference value, terminating the internal diagnosis, and reflecting the abnormal results of the voltage value and current value in the internal diagnosis result;
b) When the video controller 100 receives a random packet signal for a communication test from the video tester 200, it generates a packet signal identical to the received packet signal as a result of the communication test and sends it to the video tester 200. However, if the test result is abnormal, the parity bit check is repeated a certain number of times by re-entering the communication packet. If the number of abnormal determinations through retries is greater than the preset standard value, the communication test is terminated, and the communication test result is converted into the communication test result. Steps to reflect on;
c) When the video controller 100 receives a test video signal from the video tester 200, it determines whether the input video signal for each channel is normally input and generates an input video diagnosis result. If the determination result is abnormal, each channel is Resetting and re-determining normal input by re-inputting the input image signal, and if the number of abnormal determinations through retries is greater than a preset reference value, terminating the input image diagnosis and reflecting the input image diagnosis result;
d) When the video controller 100 receives an on/off control command for a channel to be tested from the video tester 200, it controls the operation of each channel of the video controller 100 according to the received control command, and controls the video synthesizing images of at least two channels according to a preset position based on the signal of the test image input from the tester 200, and transmitting the input image diagnosis result and the synthesized image to the image tester 200; and
e) the image tester 200 receiving the synthesized image from the image controller 100, evaluating it according to preset conditions, and outputting the evaluation result, packet signal, self-diagnosis result, and input image diagnosis result; A self-diagnosis method of a synthetic image controller including: According to claim 5,
In step a), the image controller 100 supplies power to the control unit 110 through the internal diagnosis unit 130 to detect voltage and current values, and sets the detected voltage and current values in advance. Comparing with a set reference value for voltage/current judgment of the control unit;
a-2) If normal according to the comparison result of a-1), the internal diagnosis unit 130 supplies power to the image input unit 140 to detect the voltage value, and matches the detected voltage value to the preset voltage value of the image input unit 140. Comparing with a reference value for judgment;
a-3) If the comparison result of a-2) is normal, the internal diagnosis unit 130 supplies power to the image output unit 160 to detect the voltage value, and uses the detected voltage value as the preset voltage value of the image output unit 160. Comparing with a reference value for judgment; and
a-4) If the comparison result of a-3) is normal, the internal diagnosis unit 130 generates an internal diagnosis result. delete According to claim 5,
The step b) includes b-1) the video controller 100 receiving an arbitrary packet signal for a communication test from the video tester 200;
b-2) the video controller 100 performing a parity bit check of the received packet signal and, if it is determined to be normal, generating a packet signal identical to the received packet signal as a result of a communication test; and
b-3) generating a communication test result by the image controller 100. A self-diagnosis method of a composite image controller comprising: delete According to claim 5,
The step c) includes c-1) the image controller 100 receiving a test image signal from the image tester 200;
c-2) the video controller 100 determining whether the input video signal for each channel is normally input; and
c-3) generating an input image diagnosis result if the determination result of c-2) is normal. delete According to claim 5,
Step e) includes: e-1) the video tester 200 receiving a composite image output from the video controller 100;
e-2) Predicting a synthesized image of the test image output from the image tester 200 to the image controller 100, and comparing the identity rate between the predicted synthesized image and the image synthesized by the image controller 100. ; and
e-3) As a result of the comparison, if the identity rate is greater than a preset reference value, determining it is normal and outputting a composite image diagnosis result; A self-diagnosis method of a composite image controller comprising a step.

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