KR20230096495A - Self diagnosis apparatus and method for synthetic image controller - Google Patents

Abstract

Disclosed is a self-diagnosis apparatus and method for a synthetic image controller. According to the present invention, a self-diagnosis apparatus for a synthetic image controller includes: an image controller (100); and an image tester (200). Therefore, the reliability of an image controller can be checked through the test of the image controller, and the failure reason of an image failure apparatus can be checked according to the result of the image test of the image controller through the image tester.

Description

Apparatus and method for self-diagnosis of synthetic image controller {SELF DIAGNOSIS APPARATUS AND METHOD FOR SYNTHETIC IMAGE CONTROLLER}

The present invention relates to an apparatus and method for self-diagnosis of a composite image controller, and more particularly, to an apparatus and method for self-diagnosis of a composite image controller for verifying reliability of a controller through a test of the image controller.

In recent years, devices for consumer convenience as well as consumer satisfaction with the power performance of automobiles have been widely spread.

As an example, the distribution of front/rear cameras for parking assistance and integrated display devices that can grasp the state of the vehicle at a glance is becoming common.

When parking the vehicle in the front or rear, the driver can see obstacles around the vehicle and know the distance to the obstacle through distance measuring sensors and display devices provided at the front and rear of the vehicle.

Current ambient monitoring uses 2 or 4 channels to synthesize surrounding images. If there is a problem with the synthesizing controller, the output signal is not output, so nothing is displayed on the display device in the vehicle or the external signal input standby mode is displayed. There is a problem with

In addition, it is difficult to check the reliability of the image synthesized by the image controller, and when a failure occurs in the image controller, the cause of the failure cannot be found.

Korean Registered Patent Publication No. 10-1481648 (Title of Invention: Apparatus that reliably provides images around vehicles)

In order to solve these problems, an object of the present invention is to provide an apparatus and method for self-diagnosis of a composite video controller that checks the reliability of an image controller through a test 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 voltage and current values for operation of the image controller with preset reference values, and performs self-diagnosis in an image tester. An image controller outputting to the image tester a synthesized image generated by synthesizing a communication test result 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. ; and an image tester that verifies reliability of the image controller by transmitting a communication test signal and a test image signal to the image controller and analyzing the communication test result, input image diagnosis result, and image synthesis result transmitted from the image controller. include

In addition, the video controller according to the embodiment includes a control unit that controls the operation of each channel of the video controller according to the received control command when receiving an on/off control command for a channel to be tested from the video tester; a communication unit for generating a packet signal identical to the received packet signal as a result of the communication test and transmitting the packet signal to the video tester when receiving an arbitrary packet signal for a communication test from 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 for generating an input image diagnosis result by checking a signal input of the test image generated by the image tester, and transmitting the generated input image diagnosis result to the image tester through the communication unit; an image synthesis unit for synthesizing images of at least two channels according to preset positions based on the signal of the input test image; and an image output unit for transmitting the synthesized image to an image tester.

In addition, the video tester according to the embodiment includes a tester control unit outputting an on/off control command of a test target channel to a video controller; a tester communication unit that generates random packet signals for communication tests, outputs them to the image controller, and receives packet signals generated from the image controller, self-diagnosis results, and input image diagnosis results; a tester image output unit generating a test image signal for testing and outputting the signal to the image controller; a tester image input unit for receiving the synthesized image from the image controller and evaluating it according to preset conditions; and a test output unit outputting the evaluation result, packet signal, self-diagnosis result, and input image diagnosis result.

In addition, the tester image input unit according to the embodiment predicts a synthesized image of the test image output from the tester image output unit, and compares and evaluates the same rate between the predicted synthesized 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, a) detecting a voltage value and a current value at which the image controller operates when power is supplied, and comparing the detected voltage value and current value to a preset reference value performing internal diagnosis through self-diagnosis to compare; 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 the packet signal to the video tester; c) when the image controller receives a test image signal from the image tester, generating a corresponding input image diagnosis result; d) When the video controller receives an on/off control command for a test target channel 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 image input from the video tester. synthesizing images of at least two channels according to a preset position based on the image, and transmitting the input image diagnosis result and 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, the image controller supplies power to the control unit through the internal diagnosis unit to detect voltage and current values, and converts the detected voltage and current values to the preset voltage of the control unit. / Comparing with the reference value for current determination; a-2) If it is normal according to the comparison result of a-1), the internal diagnosis unit supplies power to the image input unit, detects a voltage value, and compares the detected voltage value with a preset reference value for voltage determination of the video input unit. ; a-3) if the comparison result of a-2) is normal, the internal diagnosis unit supplies power to the image output unit, detects a voltage value, and compares the detected voltage value with a preset reference value for voltage determination of the video 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 diagnostic unit according to the embodiment repeats the comparison process a predetermined number of times if the detected voltage value and current value are abnormal as a result of comparison, but if the number of retries is greater than or equal to a preset reference value, the internal diagnosis is terminated, It is characterized in that it is reflected in the internal diagnosis result.

Further, step b) according to the embodiment may include b-1) receiving, by the video controller, an arbitrary packet signal for a communication test from the video tester; b-2) generating, by the image controller, a packet signal identical to the received packet signal as a result of a communication test if the parity bit check of the received packet signal is determined to be normal; and b-3) generating, by the image controller, a communication test result.

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

In addition, step c) according to the embodiment may include: c-1) the image controller receiving a test image signal from the image tester; c-2) determining, by the video controller, whether an 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.

In addition, as a result of the determination in c-2) according to the above embodiment, if it is abnormal, each channel is reset to determine normal input through re-input of the input video signal, and the number of times of abnormal determination through retrying exceeds the preset reference value. , the input image diagnosis is terminated and the result of the input image diagnosis is reflected.

In addition, step e) according to the embodiment may include e-1) receiving the synthesized image output from the image controller by the image tester; e-2) predicting a synthesized image of the test image output by the image tester to the image controller, and comparing the same rate between the predicted synthesized image and the image synthesized by the image controller; and e-3) determining that the same ratio is normal if the comparison result is equal to or greater than a preset reference value, and outputting a result of diagnostic composite imaging.

The present invention has the advantage of being able to check the reliability of the video controller through the test of the video controller.

In addition, the present invention has the advantage of being able to determine the cause of the failure of the image failure device according to the image test result of the image controller through the image tester.

1 is a block diagram illustrating a self-diagnosis device of a composite image controller according to an embodiment of the present invention;
2 is a flowchart illustrating a self-diagnosis method of a composite image controller according to an embodiment of the present invention;
3 is a flowchart illustrating an internal diagnosis process of a self-diagnosis method of a composite image controller according to the embodiment of FIG. 2;
4 is a flowchart illustrating a communication diagnosis process of a self-diagnosis method of a synthesized image controller according to the embodiment of FIG. 2;
5 is a flowchart illustrating a process of diagnosing an image input unit of a self-diagnosis method of a synthesized image controller according to the embodiment of FIG. 2;
6 is a flowchart illustrating a process of diagnosing whether an image is synthesized in a self-diagnosis method of a synthesized image controller according to the embodiment of FIG. 2;

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

Prior to describing specific details for the implementation of the present invention, it should be noted that configurations not directly related to the technical subject matter of the present invention are omitted within the scope of not disturbing the technical subject matter of the present invention.

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

In this specification, the expression that a certain part "includes" a certain component means that it may further include other components, rather than excluding other components.

In addition, terms such as ".. unit", ".. unit", and ".. module" refer to units that process at least one function or operation, which may be classified as 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 at least one term does not exist, each component may exist in singular or plural, and may mean singular or plural. would be self-evident.

In addition, the singular or plural number of each component may be changed according to embodiments.

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

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

Referring to FIG. 1 , a self-diagnosis apparatus for a synthesized 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 values and current values for operation of the image controller 100 with preset reference values.

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

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

To this end, 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. ).

When the control unit 110 receives an on/off control command for a test target channel from the video tester 200, the control unit 110 controls the operation of each channel of the video controller 100 for generating a synthesized video 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 on the received packet signal to determine whether or not it is normal, and if it is determined to be normal, the communication unit 120 generates the same packet signal as the received packet signal as a result of the communication test, and the video tester 200 ) can be transmitted.

In addition, if the result of checking the parity bit of the received packet signal is determined to be abnormal, the communication unit 120 may repeatedly perform a re-input request of the communication packet and a parity bit check of the packet received through the re-input request a predetermined number of times. .

In addition, the communication unit 120 may terminate the communication test and transmit the result of the communication test to the video tester 200 when the number of times of abnormal determination through retrying is equal to or greater than a preset reference value.

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

That is, the internal diagnosis 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 a preset reference value for voltage/current determination of the control unit. It can self-diagnose whether or not it operates normally.

In addition, the internal diagnosis unit 130 supplies power to the video input unit 140 to detect a voltage value, and compares the detected voltage value with a preset reference value for voltage determination of the video input unit to self-diagnose whether or not it operates normally. can

In addition, the internal diagnosis unit 130 supplies power to the video output unit 160 to detect a voltage value, compares the detected voltage value with a preset reference value for determining the voltage of the video output unit, and self-diagnoses whether or not it operates normally. can do.

In addition, the internal diagnosis unit 130 may generate internal diagnosis results and transmit them to the image 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 reflect the check result to generate an input image diagnosis result.

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

In addition, when the input video signal is not normally input, the video input unit 140 resets each channel to determine normal input through re-input of the input video signal, and the number of times of abnormal determination through retry is a preset reference value. If it is abnormal, it is reflected in the result of diagnosing the input image after terminating the diagnosis of the input image.

In addition, 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 preset positions based on input test image signals.

The image output unit 160 may transmit the image synthesized by the image synthesizer 150 to the image tester 200.

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

In addition, 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 .

To this end, the video tester 200 includes a tester control unit 210, a tester communication unit 220, a tester image output unit 230, a tester image input unit 240, and a tester output unit 250. can be configured.

The tester control unit 210 generates and outputs an on/off control command for a test target channel 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 image controller 100 .

In addition, the tester communication unit 220 may receive the packet signal generated from the image controller 100 and perform evaluation according to the communication test result.

In addition, 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, and compares the same rate between the predicted synthesized image and the image synthesized by the image controller 100. If the same rate is, for example, 90% or more, it is evaluated as normal.

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

Next, a self-diagnosis method of a composite image controller according to an embodiment of the present invention will be described.

2 is a flowchart illustrating a self-diagnosis method of a synthesized image controller according to an embodiment of the present invention, and FIG. 3 is a flowchart illustrating an internal diagnosis process of the self-diagnosis method of a synthesized image controller according to the embodiment of FIG. FIG. 4 is a flowchart for explaining a communication diagnosis process of the self-diagnosis method of the synthesized image controller according to the embodiment of FIG. 2, and FIG. 5 is a flowchart of self-diagnosis of the synthesized image controller according to the embodiment of FIG. 2 FIG. 6 is a flowchart illustrating a process of diagnosing whether or not an image is synthesized in the self-diagnosis method of the synthesized image controller according to the embodiment of FIG. 2 .

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

In the step S100, the image controller 100 supplies power to the control unit 110 through the internal diagnosis unit 130 (S110), detects the voltage value and current value, and sets the detected voltage value and current value to a preset value. It is compared with the reference value for determining the voltage/current of the control unit (S120).

If the result of the comparison 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 detected voltage value and current value are abnormal as a result of the comparison, a retry is performed. The number of attempts is counted and compared with a preset reference value for judging retry (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 detected voltage and current values are compared with the reference value for voltage/current determination (S120) is performed again. .

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

Subsequently, 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 converts the detected voltage value to a preset reference value for determining the voltage of the image input unit. It is compared with (S140) to determine whether it operates normally.

If the result of the comparison 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 result of comparing the detected voltage values is abnormal, the number of retries is counted and compared with a preset reference value for determining retry (S141).

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

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

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 the detected voltage value is used to determine the voltage of the preset image output unit. It is compared with the reference value (S160) to determine whether or not it operates normally.

If the result of the comparison in step S160 is normal, the internal diagnosis unit 130 reflects the result to generate an internal diagnosis result (S170), and if the comparison result of the sensed voltage value is abnormal, counts the number of retries to perform a preset retry It is also compared with the reference value for judgment (S161).

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

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

Subsequently, when the internal diagnosis process ends, the image controller 100 may request a communication unit diagnosis process (S200) through the image tester 200, and the image controller 100 diagnoses 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 communication test result, and transmits it to the video tester 200 ( S200) can be done.

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 bits of the packet signal received in step S210 and determines whether they are correct (S220).

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

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

As a result of comparison in step S221, if the number of retries is less than the reference value, re-input of the communication packet is requested and step S220 is performed again. to be reflected in

Subsequently, when the communication test process ends, the image controller 100 may perform a process of diagnosing the image input unit (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 based on the image test result, and transmit the result 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 normally input, a retry is requested to re-perform the determination through re-input of the input video signal, and after counting the number of retry attempts, a mini-set retry is performed. It is compared with the reference value for judgment (S321).

As a result of the comparison in step S321, if the number of retries is less than or equal to the reference value, each channel is reset (S322), and then step S320 is performed again through re-input of the input video signal, and if the number of retries is greater than or equal to the reference value End the test and allow abnormal results to be reflected in the input image diagnosis result.

In addition, when the video controller 100 receives an on/off control command for a test target channel from the video tester 200, it controls the operation of each channel of the video controller 100 according to the received control command, and the video controller 100 controls the operation of each channel. 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 the step S500, the image tester 200 predicts the synthesized image of the test image output to the image controller 100 when the synthesized image output from the image controller 100 is input (S510), and the predicted synthesis The same rate is compared between the video and the synthesized video input in step S510 (S520).

As a result of the comparison in step S520, if the same rate is a preset reference value, for example, 90% or more, the video tester 200 determines that the image controller 100 is normal (S530), and if it is less than the same rate, it is judged to be abnormal, , a synthesized image diagnosis result according to the judgment is generated and output (S540).

Therefore, the reliability of the video controller can be confirmed through the video controller test, and the cause of failure of the video blocker can be confirmed according to the video test result of the video controller through the video tester.

As described above, although it has been described with reference to the preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be done.

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

In addition, the above-mentioned terms are terms defined in consideration of functions in the present invention, which may change according to the intention or custom of the user or operator, so the interpretation of these terms should be made based on the contents throughout this specification. .

In addition, even if it is not explicitly shown or described, a person skilled in the art to which the present invention belongs can make various modifications from the description of the present invention to the technical idea according to the present invention. Obviously, it is still 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)

Self-diagnosis is performed to compare the voltage and current values for the operation of the video controller 100 with preset reference values, and the communication test result for the communication test signal transmitted from the video tester 200 and the video tester 200 An image controller 100 that outputs to the image tester 200 a synthesized image generated by synthesizing an input image diagnosis result for a test image signal transmitted from ) and images of at least two channels; and
The communication test signal and the test image signal are transmitted to the image controller 100, and the communication test result transmitted from the image controller 100, the input image diagnosis result, and the image synthesis result are analyzed to determine the image controller 100. An image tester 200 for verifying reliability; a self-diagnosis device for a synthesized image controller comprising: According to claim 1,
When the video controller 100 receives an on/off control command for a test target channel 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;
When receiving any packet signal for a communication test from the video tester 200, a communication unit 120 generating a packet signal identical to the received packet signal as a communication test result and transmitting it to the video tester 200;
an internal diagnosis unit 130 that performs self-diagnosis by comparing the voltage and current values for operation of the image controller 100 with preset reference values when power is supplied;
An image input unit that checks the signal input of the test image generated by the image tester 200, generates an input image diagnosis result, and transmits the generated input image diagnosis result to the image tester 200 through the communication unit 120 ( 140);
an image synthesis unit 150 for synthesizing images of at least two channels according to preset positions based on the signal of the input test image; and
An image output unit (160) for transmitting the synthesized image to the image tester (200); self-diagnosis device of a synthesized image controller, characterized in that it comprises. According to claim 1,
The video tester 200 includes a tester control unit 210 that outputs an on/off control command of a test target channel to the video controller 100;
The tester communication unit 220 randomly generates random packet signals for communication tests, outputs them to the image controller 100, and receives packet signals generated from the image controller 100, self-diagnosis results, and input image diagnosis results. );
a tester image output unit 230 generating a signal of a test image for testing and outputting the signal to the image controller 100;
a tester image input unit 240 that receives the synthesized image from the image controller 100 and evaluates it according to preset conditions; and
and a test output unit (250) outputting the evaluation result, the packet signal, the self-diagnosis result, and the input image diagnosis result. According to claim 3,
The tester image input unit 240 predicts a synthesized image of the test image output from the tester image output unit 230, compares and evaluates the same rate between the predicted synthesized image and the image synthesized by the image controller 100 Self-diagnosis device of a composite image controller, characterized in that. a) performing internal diagnosis through self-diagnosis of detecting voltage and current values at which the image controller 100 operates when power is supplied and comparing the detected voltage and current values with preset reference values;
b) When the video controller 100 receives an arbitrary packet signal for 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. transmitting;
c) when the image controller 100 receives a test image signal from the image tester 200, generating a corresponding 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, the video controller 100 controls the operation of each channel according to the received control command, and the video controller 100 controls the operation of each channel. Synthesizing at least two channels of images according to a preset position based on a test image signal input from the tester 100, and transmitting the input image diagnosis result and the synthesized image to the image tester 200; and
e) the image tester 200 receives the synthesized image from the image controller 100, evaluates it according to preset conditions, and outputs the evaluation result, packet signal, self-diagnosis result, and input image diagnosis result; A self-diagnosis method of a synthetic image controller comprising: According to claim 5,
In step a), a-1) the image controller 100 supplies power to the control unit 110 through the internal diagnosis unit 130, detects the voltage value and current value, and sets the detected voltage value and current value in advance. Comparing with the reference value for voltage / current determination of the set control unit;
a-2) If it is normal according to the comparison result of a-1), the internal diagnosis unit 130 supplies power to the video input unit 140 to detect the voltage value, and converts the detected voltage value to the preset video input unit voltage. 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 converts the detected voltage value to the preset voltage of the video output unit. 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; According to claim 6,
If the internal diagnosis unit 130 is abnormal as a result of comparing the detected voltage value and current value, repeating the comparison process a certain number of times,
A self-diagnosis method of a synthesized image controller, characterized in that, if the number of retries exceeds a preset reference value, internal diagnosis is terminated and the internal diagnosis result is reflected. According to claim 5,
Step b) may include b-1) receiving, by the video controller 100, an arbitrary packet signal for a communication test from the video tester 200;
b-2) generating, by the image controller 100, a packet signal identical to the received packet signal as a result of a communication test if the parity bit check of the received packet signal is determined to be normal; and
b-3) generating a communication test result by the image controller (100); According to claim 8,
As a result of the determination in step b-2), if it is determined that it is abnormal, the parity bit check is repeated a certain number of times through re-input of the communication packet,
A self-diagnosis method of a synthesized image controller characterized in that the communication test is terminated and the result of the communication test is reflected when the number of abnormalities determined through retries is equal to or greater than a preset reference value. According to claim 5,
The step c) may include: c-1) the image controller 100 receiving a test image signal from the image tester 200;
c-2) determining, by the video controller 100, whether an input video signal for each channel is normally input; and
c-3) generating a diagnosis result of the input image if the determination result of c-2) is normal. According to claim 10,
As a result of the determination in c-2), if it is abnormal, each channel is reset to determine normal input through re-input of the input video signal;
A self-diagnosis method of a synthesized image controller, characterized in that, when the number of abnormalities determined through retries exceeds a preset reference value, diagnosis of the input image is terminated and the result of diagnosis of the input image is reflected. According to claim 5,
The step e) may include e-1) the image tester 200 receiving the synthesized image output from the image controller 100;
e-2) Predicting a synthesized image of the test image output by the image tester 200 to the image controller 100, and comparing the same 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 same rate is equal to or greater than a predetermined reference value, determining that the same rate is normal and outputting a result of diagnosing the synthesized image;

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