CN111083398A - Automatic testing method and system for television, storage medium and electronic equipment - Google Patents
Automatic testing method and system for television, storage medium and electronic equipment Download PDFInfo
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- CN111083398A CN111083398A CN201911361529.5A CN201911361529A CN111083398A CN 111083398 A CN111083398 A CN 111083398A CN 201911361529 A CN201911361529 A CN 201911361529A CN 111083398 A CN111083398 A CN 111083398A
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- 238000012360 testing method Methods 0.000 title claims abstract description 222
- 238000000926 separation method Methods 0.000 claims abstract description 65
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000005070 sampling Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 10
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 230000006870 function Effects 0.000 description 12
- 230000005236 sound signal Effects 0.000 description 8
- 238000001228 spectrum Methods 0.000 description 7
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
Abstract
The invention discloses an automatic testing method and system of a television, a storage medium and electronic equipment, wherein the method comprises the following steps: separating the output signal of the television into a separation signal and a VB1/LVDS signal; performing ADC (analog to digital converter) conversion on the separation signal to obtain a separation signal converted by the ADC, and performing time sequence test on the separation signal converted by the ADC; and converting the VB1/LVDS signal into an HDMI signal, and carrying out image test on the HDMI signal. Because the output signal of the television is separated into the separation signal and the VB1/LVDS signal through the adapter plate, the time sequence test can be carried out after the corresponding conversion is carried out on the separation signal, the image test can be carried out after the corresponding conversion is carried out on the VB1/LVDS signal, and the time sequence test and the image test are integrated, thereby realizing the automatic test of the television, simultaneously carrying out the time sequence test and the image test, having high test efficiency and high accuracy.
Description
Technical Field
The invention relates to the technical field of automatic testing of televisions, in particular to an automatic testing method and system of a television, a storage medium and electronic equipment.
Background
In the prior art, derived models all need to be manually subjected to hardware function self-checking, and the self-checking of each derived model needs 1-2 days. In the testing process, engineers need to operate various signal source devices and testing devices to perform various function tests and confirmations on the television complete machine. These works are repetitive works, which are easy to make mistakes in manual self-checking and low in efficiency. Therefore, the manual testing of the derived models has the problems of low efficiency and low accuracy.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an automatic testing method and system for a television, a storage medium, and an electronic device, aiming at solving the problems of low efficiency and low accuracy in the manual testing of derived models in the prior art.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an automated testing method for a television, wherein the method comprises the steps of:
separating the output signal of the television into a separation signal and a VB1/LVDS signal;
performing ADC (analog to digital converter) conversion on the separation signal to obtain a separation signal converted by the ADC, and performing time sequence test on the separation signal converted by the ADC;
and converting the VB1/LVDS signal into an HDMI signal, and carrying out image test on the HDMI signal.
The automatic testing method of the television, wherein the image testing of the HDMI signal comprises:
the HDMI signals are distributed into a first path of signals and a second path of signals;
displaying the first path of signal into a test image in real time;
and carrying out image test on the second path of signal.
The automatic testing method of the television, wherein the output signal of the television comprises: a power supply signal, a VB1/LVDS signal, and a local dimming signal.
The method for automatically testing the television set, wherein the separation signal comprises: the device comprises a screen power supply signal, a VB1lock signal, an LVDS data signal, a backlight ADIM signal, a PDIM signal and a local dimming signal;
the ADC converting the separation signal into a separation signal converted by the ADC and performing a timing test on the separation signal converted by the ADC, includes:
and respectively carrying out ADC conversion on each separation signal, and then comparing the time sequence difference of the separation signals converted by each ADC so as to realize the test of a screen power supply time sequence, a backlight mixed dimming time sequence and a local dimming time sequence.
The automatic testing method of the television set comprises the following steps:
carrying out sound test on the differential signal output by the television after operational amplification processing and amplitude matching processing in sequence;
initializing a power meter and setting the power meter to be in a test power state; and controlling the television to output the HDMI signal, configuring the backlight brightness, the contrast and the volume of the television to be maximum values, and carrying out power test.
An automated television testing system, comprising:
the adapter plate is connected with the television and is used for separating an output signal of the television into a separation signal and a VB1/LVDS signal;
the VB 1-to-HDMI board is connected with the adapter board, and the VB 1-to-HDMI board is used for converting the VB1/LVDS signals into HDMI signals;
the ADC sampling component is connected with the adapter plate and is used for carrying out ADC conversion on the separation signal into a separation signal converted by the ADC;
and the testing device is connected with the VB1 switching HDMI board and the ADC sampling assembly, and is used for carrying out time sequence testing on the separated signals converted by the ADC and carrying out image testing on the HDMI signals.
The automatic test system of TV set, wherein, the system still includes:
the HDMI signal distributor is connected with the VB1 switching HDMI board and the testing device and is used for distributing the HDMI signals into a first path of signals and a second path of signals;
the test image display is connected with the HDMI signal distributor and used for displaying the first path of signals into a test image in real time;
the testing device is used for carrying out image testing on the second path of signals.
The automatic test system of the television, wherein, the output signal of the television includes: a power supply signal, a VB1/LVDS signal, and a local dimming signal;
the separation signal includes: a screen power supply signal, a VB1lock signal, an LVDS data signal, a backlight ADIM signal, a PDIM signal and a local dimming signal;
the testing device is specifically used for comparing the time sequence difference of the separated signals converted by the ADCs so as to realize the testing of a screen power supply time sequence, a backlight mixed dimming time sequence and a local dimming time sequence.
A storage medium, wherein an automatic testing program of a television is stored, and when the automatic testing program of the television is executed, the steps of the automatic testing method of the television are realized.
An electronic device comprising a storage medium as described above.
Has the advantages that: because the output signal of the television is separated into the separation signal and the VB1/LVDS signal through the adapter plate, the time sequence test can be carried out after the corresponding conversion is carried out on the separation signal, the image test can be carried out after the corresponding conversion is carried out on the VB1/LVDS signal, and the time sequence test and the image test are integrated, thereby realizing the automatic test of the television, simultaneously carrying out the time sequence test and the image test, having high test efficiency and high accuracy.
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Fig. 1 is a first flowchart of an automated testing method for a television according to the present invention.
Fig. 2 is a schematic structural diagram of an automated testing system of a television set according to the present invention.
Fig. 3 is a second flowchart of the method for automatically testing the television according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides some embodiments of an automatic testing system for a television.
As shown in fig. 2, the automatic testing system for tv set of the present invention includes:
the adapter plate is connected with the television and is used for separating an output signal of the television into a separation signal and a VB1/LVDS signal;
the VB 1-to-HDMI board is connected with the adapter board, and the VB 1-to-HDMI board is used for converting the VB1/LVDS signals into HDMI signals;
the ADC sampling component is connected with the adapter plate and is used for carrying out ADC conversion on the separation signal into a separation signal converted by the ADC;
and the testing device is connected with the VB1 switching HDMI board and the ADC sampling assembly, and is used for carrying out time sequence testing on the separated signals converted by the ADC and carrying out image testing on the HDMI signals.
It should be noted that, the invention separates the output signal of the television into the separation signal and the VB1/LVDS signal through the adapter plate, and carries out the time sequence test after correspondingly converting the separation signal, and carries out the image test after correspondingly converting the VB1/LVDS signal, and combines the time sequence test and the image test together, thereby realizing the automatic test of the television and improving the test efficiency. The time sequence test and the image test can be carried out simultaneously, and the test efficiency is further improved. And the two tests are based on the same output signal of the television, are closer to the actual use scene of the television, and have higher accuracy.
In addition, other tests can be performed simultaneously in addition to the two tests, so that the test efficiency can be improved by times.
It should be noted that, since the VB1/LVDS signal (where "/" indicates "or", that is, the VB1/LVDS signal is the VB1 signal or the LVDS signal) is converted into the HDMI signal and the HDMI signal is subjected to the image test by the testing device, the automatic test of the television can be realized, which consumes less time and has high accuracy. The automatic test replaces manual test, and the test efficiency and the test accuracy are improved. The test efficiency can be reduced from 1 day to 1 hour. The test accuracy is improved to 100%.
Specifically, when the VB 1-HDMI board is adopted to connect a television and a testing device respectively, an image acquisition channel is formed to perform images, and other devices such as a patch board and an HDMI acquisition box can be added to the image acquisition channel. The testing device can be a terminal such as a computer, and can also adopt a device which is provided with a memory and a processor and can process data of the HDMI signals. When testing arrangement adopted the computer, gather the HDMI signal that VB1 changes the HDMI board conversion and obtain through HDMI collection box, the computer converts the HDMI signal into the USB signal and carries out image test, and image test has two kinds: firstly, extracting characters of a picture through an OCR image analysis tool, and judging whether the picture is normal according to the characters. And secondly, comparing the acquired image with a reference image to obtain pixel points, analyzing the similarity of two images, and comparing the similarity with a threshold value to judge whether the images are consistent.
In a preferred embodiment of the present invention, as shown in fig. 2, the system further comprises:
the HDMI signal distributor is connected with the VB1 HDMI conversion board and the testing device, and the testing image display is connected with the HDMI signal distributor; the HDMI signal distributor is used for distributing the HDMI signals into a first path of signals and a second path of signals; the test image display is used for displaying the first path of signal into a test image in real time; the testing device is used for carrying out image testing on the second path of signals.
Specifically, the HDMI signal distributor and the test image display are arranged on the image acquisition channel, the HDMI signal is distributed into two paths of signals through the HDMI signal distributor, namely a first path of signal and a second path of signal, the first path of signal is displayed into the test image through the test image display, a tester can visually see the test image through the test image display, and once the test image output by the television is abnormal, the tester can visually see the test image to perform preliminary judgment. The testing device carries out image testing on the second path of signals, can accurately find the abnormity and carries out accurate judgment.
In a preferred embodiment of the present invention, as shown in fig. 2, the output signal of the television set comprises: a power supply signal, a VB1/LVDS signal, and a local dimming signal; the adapter plate is used for separating the power supply signal, the VB1/LVDS signal and the local dimming signal output by the television into separate signals; the ADC sampling component is used for carrying out ADC conversion on the separation signal to obtain a separation signal converted by the ADC; the test device is used for carrying out time sequence test on the separation signals converted by the ADC. The separation signal includes: a screen power supply signal, a VB1lock signal, an LVDS data signal, a backlight ADIM signal, a PDIM signal, and a local dimming signal.
Specifically, the adapter board is specifically configured to receive a VB1/LVDS signal output by the television and send the VB1 adapter board to the HDMI board; separating a power supply signal, a VB1/LVDS signal and a local dimming signal output by the television into a screen power supply signal, a VB1lock signal, an LVDS data signal, a backlight ADIM signal, a PDIM signal and a local dimming signal; the ADC sampling component comprises: the plurality of ADC sampling modules are connected with the adapter plate and the testing device and used for respectively carrying out ADC conversion on each separation signal to obtain a separation signal converted by the ADC; the testing device is specifically used for comparing the time sequence difference of the separated signals converted by the ADCs so as to realize the testing of a screen power supply time sequence, a backlight mixed dimming time sequence and a local dimming time sequence.
Specifically, the adapter plate is arranged on the image acquisition channel, and the ADC sampling assembly is connected with the adapter plate and the testing device respectively, so that time sequence testing can be performed. The power line, the VB1/LVDS line and the local dimming line are connected with the television and the adapter plate, signals of the three lines are separated through the adapter plate, and the separated signals obtained through separation specifically comprise: a screen power supply signal, a VB1lock signal, an LVDS data signal, a backlight ADIM signal, a PDIM signal, and a local dimming signal. The separation signals are respectively subjected to ADC conversion, and each separation signal corresponds to one ADC conversion module, so that the separation signals converted by the ADCs are independently and complementarily interfered, the time sequence difference of the separation signals converted by the ADCs can be detected, and whether the time sequences of the separation signals converted by the ADCs are consistent or not can be judged.
In a preferred embodiment of the present invention, as shown in fig. 2, the system further comprises: the operational amplifier is used for sequentially carrying out operational amplification processing and amplitude matching processing on the differential signal output by the television to obtain an amplitude-matched single-ended signal; the testing device is used for carrying out sound testing on the single-ended signal with matched amplitude.
Specifically, the television and the testing device are connected through the operational amplifier, and then a sound collection channel is formed. The main board power amplifier of the television outputs the sound signals (i.e. differential signals) of the left and right sound channels, and the sound signals are converted into single-ended signals (i.e. processed sound signals) with matched amplitudes after the operational amplification processing and the amplitude matching processing of the operational amplifier. The processed sound signal enters the input port of the computer microphone and is collected through the sound card to obtain a sound collection signal. The sound testing method comprises the following steps: judging whether sound exists or not (namely judging whether a sound collecting signal exists or not), if so, analyzing the FFT frequency spectrum and amplitude of the sound, comparing the FFT frequency spectrum and amplitude of the reference sound, judging the similarity of the two sounds, and judging whether the two sounds are consistent or not by comparing the similarity with a threshold value.
In a preferred embodiment of the present invention, as shown in fig. 2, the system further comprises: the infrared remote controller is connected with the testing device and used for sending a control signal to the television; the power meter is connected with the television and is used for measuring the power of the television; the testing device is connected with the television through a serial port; the testing device is used for initializing the power meter through the serial port and setting the power meter to be in a testing power state; and controlling the television to output an HDMI signal through the infrared remote controller, configuring the backlight brightness, the contrast and the volume of the television to be maximum values, and carrying out power test.
Specifically, the power test herein includes: testing the maximum power and the standby power; the maximum power of the television refers to the maximum power of the television in the playing state, and the standby power of the television refers to the power of the television in the standby state.
During the maximum power test, the test device sets the signal generator through the serial port, so that the signal generator outputs an HDMI signal source to the TV, for example, the signal generator outputs a resolution (1080P or 4K) and a specific picture (such as a color bar picture). And initializing the power meter through the serial port, and setting the power meter to be in a test power state. The infrared remote controller sends out an infrared control signal to control the television to be in an HDMI information source state (at the moment, the television is necessarily in a playing state), the infrared remote controller sets the backlight brightness, the contrast and the volume of the television to be maximum values, and after a certain time, the power meter obtains test data of a power value, so that the maximum power of the television can be measured.
During the standby power test, the testing device sets the signal generator through the serial port, so that the signal generator outputs an HDMI signal source to the TV, for example, the signal generator outputs a resolution (1080P or 4K) and a specific picture (such as a color bar picture). And initializing the power meter through the serial port, and setting the power meter to be in a test power state. And then controlling the television to enter a standby state through the infrared remote controller, and testing to obtain the standby power of the television.
The system of the invention can also carry out remote control test (also called remote control function test), and the specific remote control test process is as follows:
the test value is set and read through a serial port control signal generator, a power meter and a digital television board card (DTV board card). The television is controlled by sending a remote control code (namely a control signal) through the infrared remote controller, then the computer acquires the OSD picture, the OSD picture analyzes the characters of the current OSD picture through the OCR server, the current UI option is judged through the characters, then the judgment is carried out with the prestored tree-shaped graph of the previous UI option, and the next remote control operation is carried out. Therefore, the automatic remote control of the television is realized. And when the corresponding test item, the related signal generator, the power meter and the DTV board card are set, then the television is set, the television enters a corresponding test state, and at this time, the data of the computer is acquired and recorded.
Besides the image test, the time sequence test, the sound test and the power test mentioned above, the system of the invention can also be used for testing software version and project ID, power-on mode, network connection, channel searching and digital television receiving, STR on/off, DC/AC switch, DDR/VB1/LVDS spread spectrum parameter acquisition, screen flash/each channel picture interference and key function. Wherein, the channel test includes: HDMI channel test (including HDCP test, EDID test), AV channel test, USB channel test.
As shown in fig. 3, initialization is performed first, a picture is obtained through the image capture card, and whether the television is in a standby state, a power-on state, or a power-on process is determined through the picture. If the television is in the standby state, the infrared remote controller sends the startup remote control code to start the television.
Software version and project ID test: reading the software version and project ID of the television through a serial port; and then, carrying out remote control function test, wherein the remote control function is to send a remote control code for opening a set menu through an infrared remote controller, and then judge whether the television opens the set menu through a picture, namely, the set menu is displayed on the picture, the remote control function is qualified, otherwise, the remote control function is unqualified.
Testing a power-on mode of the television: and acquiring the power-ON mode state of the television through the serial port, wherein the power-ON mode state comprises ON, STANDBY and LAST. The ON mode is a power-ON state, the STANDBY mode is a power-ON state, the LAST mode enters a STANDBY state, the LAST mode enters a state before power failure, and the requirements of various areas are different, for example, europe needs to be set as the LAST mode, other overseas areas need to be set as the STANDBY mode, and china needs to be set as the ON mode. The test first obtains a power-on mode and a region, and then compares the power-on mode with the power-on mode required by the region to judge whether the power-on mode is qualified.
And (3) network connection testing: the signal intensity value of the WIFI module of the television at a certain hotspot is obtained through the serial port and is compared with a preset value, if the obtained signal intensity is larger than the preset value, the signal intensity is qualified, and if the obtained signal intensity is smaller than the preset value, the signal intensity is unqualified.
HDMI channel test: the method comprises the steps that an HDMI signal source is set through a serial port, the HDMI signal source is enabled to output a specific resolution (1080P or 4K) and a specific picture (such as a color bar picture), then a television is controlled to be switched to an HDMI signal source through an infrared remote controller, then an image picture is obtained through an image channel, and whether the picture is consistent with a preset picture or not is analyzed through the image acquisition method; and then acquiring a sound signal through a sound channel, acquiring and analyzing the sound signal by using the sound acquisition method, and comparing the acquired sound signal with a preset sound to judge whether the acquired sound signal is consistent with the preset sound. The HDCP and EDID functions were further tested in the same way. The AV channel and USB channel tests are also similar to the HDMI channel test method.
Searching channels and testing the functions of the digital television, and setting a digital television signal generator through a serial port to output a specific system, frequency, a modulation mode and a specific code stream corresponding to the area of the test television; and then controlling the television through an infrared remote controller to enable the television to enter a function of automatically searching channels, and after the channels are searched, testing the number of the searched programs and analyzing whether the program content is consistent with the played code stream to judge whether the channels are missed or not and whether the searched programs are correct or not.
The STR startup and shutdown test is carried out, the HDMI signal source is set through a serial port, the HDMI signal source is enabled to output a specific resolution (1080P or 4K) and a specific picture (such as a color bar picture), then the television is controlled to be switched to the HDMI signal source through an infrared remote controller, and the STR function is turned on; then, an infrared remote controller sends a remote control code to close an intelligent switch, and then whether the picture is in a standby state or not is judged through image acquisition; and then, delaying according to preset shutdown time, then sending the remote control code to turn on the intelligent switch, judging that normal picture output exists within specific time (within 3 seconds), and otherwise, judging that the picture is unqualified. Similarly, the AC on/off/DC on/off test is also similar to the method.
The time sequence measuring method comprises the following steps: the power line of the main board, the VB1/LVDS line and the local dimming line are firstly connected to the adapter board, the power supply of the screen, the VB1lock signal, the LVDS data, the backlight ADIM, the PDIM and the local dimming signal are separated through the conversion board, sampling is carried out through the plurality of ADCs, the signals are converted into digital signals, and time sequence differences of the signals are compared, so that the measurement of the power sequence on the screen, the backlight mixed dimming time sequence and the local dimming time sequence is realized.
Obtaining VB1/DDR/LVDS spread spectrum parameters, obtaining and displaying VB1/DDR/LVDS spread spectrum parameters of a factory menu in a television mainboard through a serial port command, comparing the VB1/DDR/LVDS spread spectrum parameters with a preset maximum value, and judging whether the VB/DDR/LVDS spread spectrum parameters are in a reasonable range.
The method for testing screen flashing/picture interference of each channel enables a television to automatically play for 20 seconds in a DTV/HDMI/AV signal source, and sets a signal source (a signal generator and a DTV board card, and specifically can output DTV/HDMI/AV signals) through a serial port command to output 16 gray scale signals. Then whether the image has interference or not is analyzed through image acquisition, and whether the image has interference or not can be observed through human eyes.
The method for automatically testing the maximum power and the standby power comprises the following steps: the signal source (the signal generator and the DTV board card) is set through a serial port, the signal generator outputs an HDMI signal source to a television, a specific resolution (1080P or 4K) and a specific picture (such as a color bar picture) are output, and then a power meter is initialized through the serial port and set to be in a test power state; and then controlling the television to be positioned in the HDMI information source through the infrared remote controller, remotely controlling the backlight brightness, the contrast and the volume of the television to be set as maximum values through the infrared remote controller, and obtaining test data of the power value after a certain time to measure the maximum power of the television. Similarly, after the signal source and the power meter are set, the television is enabled to enter a standby state through remote control of the infrared remote controller, then the power meter is enabled to measure the power accumulated value for 10 minutes, and then the power accumulated value is multiplied by 6 to obtain the standby power. And finally outputting a production report.
Based on the automatic testing system of the television, the invention also provides a preferred embodiment of the automatic testing method of the television, which comprises the following steps:
as shown in fig. 1, an automated testing method for a television according to an embodiment of the present invention includes the following steps:
step S100, separating the output signal of the television into a separation signal and a VB1/LVDS signal, as described above.
The output signal of the television set comprises: a power supply signal, a VB1/LVDS signal, and a local dimming signal.
The separation signal includes: a screen power supply signal, a VB1lock signal, an LVDS data signal, a backlight ADIM signal, a PDIM signal, and a local dimming signal.
Step S200, performing ADC conversion on the separation signal into a separation signal converted by the ADC, and performing a timing test on the separation signal converted by the ADC, as described above.
Specifically, ADC conversion is performed on each separation signal, and then the timing difference of the separation signals converted by the ADCs is compared, so as to implement the test of the screen power supply timing sequence, the backlight hybrid dimming timing sequence, and the local dimming timing sequence, as described above.
And step S300, converting the VB1/LVDS signal into an HDMI signal, and carrying out image test on the HDMI signal.
Step S300 includes:
step S310, the HDMI signal is divided into a first path of signal and a second path of signal, which is described above.
Step S320, displaying the first path of signal in real time as a test image, as described above.
And step S330, carrying out image test on the second path of signal, as described above.
And step S400, carrying out sound test on the differential signal output by the television after operational amplification processing and amplitude matching processing in sequence, specifically as described above.
Step S500, initializing a power meter and setting the power meter to be in a test power state; and controlling the television to output the HDMI signal, configuring the backlight brightness, the contrast and the volume of the television to be maximum values, and performing power test, specifically as described above.
Based on the above automatic testing method for the television, the present invention further provides a preferred embodiment of the storage medium:
a storage medium, storing an automatic testing program of a television, when being executed, implementing the steps of the automatic testing method of the television according to any one of the above embodiments.
Based on the storage medium, the invention further provides a preferred embodiment of the electronic device:
an electronic device comprising the storage medium.
In summary, the present invention provides an automatic testing method for a television, a system, a storage medium, and an electronic device thereof, wherein the method includes the steps of: separating the output signal of the television into a separation signal and a VB1/LVDS signal; performing ADC (analog to digital converter) conversion on the separation signal to obtain a separation signal converted by the ADC, and performing time sequence test on the separation signal converted by the ADC; and converting the VB1/LVDS signal into an HDMI signal, and carrying out image test on the HDMI signal. Because the output signal of the television is separated into the separation signal and the VB1/LVDS signal through the adapter plate, the time sequence test can be carried out after the corresponding conversion is carried out on the separation signal, the image test can be carried out after the corresponding conversion is carried out on the VB1/LVDS signal, and the time sequence test and the image test are integrated, thereby realizing the automatic test of the television, simultaneously carrying out the time sequence test and the image test, having high test efficiency and high accuracy. The automatic test replaces manual test, and the test efficiency and the test accuracy are improved. The test efficiency can be reduced from 1 day to 1 hour. The test accuracy is improved to 100%.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. An automated testing method for a television, the method comprising the steps of:
separating the output signal of the television into a separation signal and a VB1/LVDS signal;
performing ADC (analog to digital converter) conversion on the separation signal to obtain a separation signal converted by the ADC, and performing time sequence test on the separation signal converted by the ADC;
and converting the VB1/LVDS signal into an HDMI signal, and carrying out image test on the HDMI signal.
2. The method of claim 1, wherein the image testing the HDMI signal comprises:
the HDMI signals are distributed into a first path of signals and a second path of signals;
displaying the first path of signal into a test image in real time;
and carrying out image test on the second path of signal.
3. The method of claim 1, wherein the output signal of the television set comprises: a power supply signal, a VB1/LVDS signal, and a local dimming signal.
4. The method of claim 3, wherein the separating the signal comprises: a screen power supply signal, a VB1lock signal, an LVDS data signal, a backlight ADIM signal, a PDIM signal and a local dimming signal;
the ADC converting the separation signal into a separation signal converted by the ADC and performing a timing test on the separation signal converted by the ADC, includes:
and respectively carrying out ADC conversion on each separation signal, and then comparing the time sequence difference of the separation signals converted by each ADC so as to realize the test of a screen power supply time sequence, a backlight mixed dimming time sequence and a local dimming time sequence.
5. The method for automatically testing a television set according to claim 1, wherein the method further comprises:
carrying out sound test on the differential signal output by the television after operational amplification processing and amplitude matching processing in sequence;
initializing a power meter and setting the power meter to be in a test power state; and controlling the television to output the HDMI signal, configuring the backlight brightness, the contrast and the volume of the television to be maximum values, and carrying out power test.
6. An automated television testing system, comprising:
the adapter plate is connected with the television and is used for separating an output signal of the television into a separation signal and a VB1/LVDS signal;
the VB 1-to-HDMI board is connected with the adapter board, and the VB 1-to-HDMI board is used for converting the VB1/LVDS signals into HDMI signals;
the ADC sampling component is connected with the adapter plate and is used for carrying out ADC conversion on the separation signal into a separation signal converted by the ADC;
and the testing device is connected with the VB1 switching HDMI board and the ADC sampling assembly, and is used for carrying out time sequence testing on the separated signals converted by the ADC and carrying out image testing on the HDMI signals.
7. The automated television testing system of claim 6, further comprising:
the HDMI signal distributor is connected with the VB1 switching HDMI board and the testing device and is used for distributing the HDMI signals into a first path of signals and a second path of signals;
the test image display is connected with the HDMI signal distributor and used for displaying the first path of signals into a test image in real time;
the testing device is used for carrying out image testing on the second path of signals.
8. The automated television testing system of claim 7, wherein the output signal of the television comprises: a power supply signal, a VB1/LVDS signal, and a local dimming signal;
the separation signal includes: a screen power supply signal, a VB1lock signal, an LVDS data signal, a backlight ADIM signal, a PDIM signal and a local dimming signal;
the testing device is specifically used for comparing the time sequence difference of the separated signals converted by the ADCs so as to realize the testing of a screen power supply time sequence, a backlight mixed dimming time sequence and a local dimming time sequence.
9. A storage medium storing an automated test program for a television set, which when executed performs the steps of the method for automated testing of a television set according to any one of claims 1 to 5.
10. An electronic device characterized by comprising the storage medium of claim 9.
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Application publication date: 20200428 |