CN109068132B

CN109068132B - VBO display interface test method, device, equipment and storage medium

Info

Publication number: CN109068132B
Application number: CN201810961793.1A
Authority: CN
Inventors: 潘军璋
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2020-05-12
Anticipated expiration: 2038-08-22
Also published as: CN109068132A

Abstract

The invention discloses a method, a device, equipment and a storage medium for testing a VBO display interface. The method comprises the following steps: extracting an image detection signal and a connectivity detection signal transmitted in a VBO display interface, wherein the image detection signal is a signal transmitted by a first data channel, and the connectivity detection signal is a signal transmitted by a second data channel; determining an image detection result according to the image detection signal; determining a connectivity detection result according to the connectivity detection signal; and generating a detection result of the VBO display interface based on the image detection result and the connectivity detection result. The invention solves the technical problems that the VBO signals in all data channels of the VBO display interface are subjected to image restoration in the prior art, the hardware complexity is increased, and the hardware cost is increased, realizes the image restoration of the VBO signals in partial data channels, reduces the occupation of SOC pin resources, and reduces the hardware complexity and the hardware cost.

Description

VBO display interface test method, device, equipment and storage medium

Technical Field

The embodiment of the invention relates to an interface test technology, in particular to a test method, a test device, test equipment and a storage medium for a VBO display interface.

Background

With the development of display technology, ultra-high definition display devices (such as 4K2K high definition televisions) are becoming more and more popular in people's daily life. Generally, a signal source of the ultra-high definition display device is a VBO (V-BY-ONE) signal, and a VBO display interface is generally adopted to transmit the VBO signal, so how to test the VBO display interface is more and more important.

At present, when a VBO display interface is tested, images of VBO signals in the VBO display interface need to be restored, and if the VBO signals of all data channels successfully restore the images, it indicates that the VBO display interface is qualified.

However, in the process of implementing the above scheme, the inventor finds that, when the VBO display interface is tested in a mode of restoring an image, because the resolution of the VBO signal is relatively high, a processor with a high-speed transceiver is required to process the VBO signal, and when the processor processes the image restored by the VBO signal, the processing complexity is high, and excessive pin resources on a System-on-a-chip (SOC) are occupied, so that the hardware complexity and the hardware cost of the test are increased.

Disclosure of Invention

The invention provides a method, a device, equipment and a storage medium for testing a VBO display interface, which are used for solving the technical problems that in the prior art, VBO signals in all data channels of the VBO display interface are subjected to image restoration, the hardware complexity is increased, and the hardware cost is increased.

In a first aspect, an embodiment of the present invention provides a method for testing a VBO display interface, including:

extracting an image detection signal and a connectivity detection signal transmitted in a VBO display interface, wherein the image detection signal is a signal transmitted by a first data channel, the connectivity detection signal is a signal transmitted by a second data channel, and the first data channel and the second data channel form all data channels of the VBO display interface;

determining an image detection result according to the image detection signal;

determining a connectivity detection result according to the connectivity detection signal;

and generating a detection result of the VBO display interface based on the image detection result and the connectivity detection result.

Further, before extracting the image detection signal and the connectivity detection signal transmitted in the VBO display interface, the method further includes:

detecting the number of data channels of a VBO display interface;

and determining a selection scheme of the first data channel and the second data channel according to the number of the data channels.

Further, the determining the selection scheme of the first data channel and the second data channel according to the number of the data channels includes:

and determining the channel interval number between adjacent target data channels according to the data channel number, wherein the target data channels are channels in the first data channels or channels in the second data channels.

Further, the target data channel is a channel in the first data channel,

the extracting of the image detection signal and the connectivity detection signal transmitted in the VBO display interface includes:

selecting target data channels at intervals in the VBO display interface according to the channel interval quantity to form a first data channel;

marking the unselected data channel in the VBO display interface as a second data channel;

sampling signals in the first data channel to obtain image detection signals;

and sampling the signal in the second data channel to obtain a connectivity detection signal.

Further, the determining an image detection result according to the image detection signal includes:

converting the image detection signal into a first LVDS signal;

obtaining a target image according to the first LVDS signal;

and determining an image detection result according to the comparison result of the target image and the original image, wherein the VBO display interface transmission signal is a signal corresponding to the original image.

Further, the determining a connectivity detection result according to the connectivity detection signal includes:

extracting characteristic signals in the connectivity detection signals;

and determining a connectivity detection result according to the characteristic signal.

Further, the characteristic signal includes: a clock signal and/or a latch signal.

Further, the extracting the characteristic signal in the connectivity detection signal includes:

converting the connectivity detection signal into a second LVDS signal;

a clock signal included in the second LVDS signal is extracted.

Further, the determining the connectivity detection result according to the characteristic signal includes:

acquiring a reference clock signal in a first LVDS signal, wherein the first LVDS signal is obtained by converting the image detection signal;

and comparing the clock signal with the reference clock signal, and determining a connectivity detection result according to the comparison result.

Further, the determining the connectivity detection result according to the characteristic signal is a latch signal, and includes:

acquiring a level value of the latch signal;

and comparing the level value with a preset reference level value, and determining a connectivity detection result according to the comparison result.

Further, the generating a detection result of the VBO display interface based on the image detection result and the connectivity detection result includes:

and if the image detection result and the connectivity detection result are both qualified, determining that the detection result of the VBO display interface is qualified.

In a second aspect, an embodiment of the present invention further provides a device for testing a VBO display interface, including:

the device comprises an extraction module, a VBO display interface and a control module, wherein the extraction module is used for extracting an image detection signal and a connectivity detection signal transmitted in the VBO display interface, the image detection signal is a signal transmitted by a first data channel, the connectivity detection signal is a signal transmitted by a second data channel, and the first data channel and the second data channel form all data channels of the VBO display interface;

the first determining module is used for determining an image detection result according to the image detection signal;

a second determining module, configured to determine a connectivity detection result according to the connectivity detection signal;

and the generating module is used for generating a detection result of the VBO display interface based on the image detection result and the connectivity detection result.

In a third aspect, an embodiment of the present invention further provides a device for testing a VBO display interface, including: an interface module, a memory, and one or more processors;

the interface module is used for accessing a VBO display interface;

the memory for storing one or more programs;

when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the method for testing the VBO display interface according to the first aspect.

In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for testing the VBO display interface according to the first aspect.

The invention extracts the image detection signal and the connectivity detection signal transmitted in the VBO display interface, the image detection signal is a signal transmitted by a first data channel, the connectivity detection signal is a signal transmitted by a second data channel, then determining an image detection result according to the image detection signal, and determining a connectivity detection result according to the connectivity detection signal, and based on the image detection result and the connectivity detection result, the technical means for generating the detection result of the VBO display interface solves the problems that when the VBO signals in all data channels of the VBO display interface are subjected to image reduction in the prior art, the technical problems of hardware complexity and hardware cost increase are solved, the VBO signals in partial data channels of the VBO display interface are restored, occupation of SOC pin resources is reduced, and the technical effects of hardware complexity and hardware cost are reduced.

Drawings

FIG. 1 is a flowchart illustrating a method for testing a VBO display interface according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating a method for testing a VBO display interface according to a second embodiment of the present invention;

FIG. 3 is a schematic diagram of non-split screen and 2-split screen of a VBO signal of 8Lane according to an embodiment of the invention;

FIG. 4 is a schematic diagram of a 4-split screen and an 8-split screen of a VBO signal of 8Lane according to an embodiment of the invention;

FIG. 5 is a schematic diagram illustrating the non-split screen and the 2-split screen of the VBO signal of 16Lane according to an embodiment of the invention;

FIG. 6 is a schematic diagram of a 4-split screen of a VBO signal of 16Lane according to an embodiment of the invention;

FIG. 7 is a block diagram of a testing apparatus for a VBO display interface according to a third embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a testing apparatus for a VBO display interface according to a fourth embodiment of the present invention;

FIG. 9 is a flowchart illustrating a VBO signal processing method according to a fourth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Example one

Fig. 1 is a flowchart of a method for testing a VBO display interface according to an embodiment of the present invention, where the method is applicable to a case of testing the VBO display interface, and the method may be executed by a testing device of the VBO display interface, where the testing device of the VBO display interface may be implemented in a software and/or hardware manner, and the testing device of the VBO display interface may be formed by two or more physical entities or may be formed by one physical entity.

For the convenience of understanding, the test equipment of the VBO display interface is described in the embodiment. Specifically, after a VBO signal is generated by a driving board of the liquid crystal panel, the VBO signal is output to the testing device of the VBO display interface through the VBO display interface, so that the testing device of the VBO display interface performs detection analysis on an image detection result and a connectivity detection result through the VBO signal.

As shown in fig. 1, the testing method specifically includes the following steps:

and S110, extracting the image detection signal and the connectivity detection signal transmitted in the VBO display interface.

The image detection signal is a signal transmitted by a first data channel, the connectivity detection signal is a signal transmitted by a second data channel, and the first data channel and the second data channel form all data channels of the VBO display interface.

Specifically, the V-by-One is a signal standard specially developed for high-definition digital image signal transmission. The first data channel is used for transmitting image detection signals, and the second data channel is used for transmitting connectivity detection signals. Generally speaking, the number of data channels of the VBO display interface is not fixed, and a user can adopt VBO display interfaces corresponding to different numbers of data channels according to actual use conditions. One of the data channels is referred to as 1 Lane. Illustratively, the VBO display interface may be 8Lane, 16Lane, 32Lane, etc. In practical operation, the first data channel may include N data channels, and the second data channel may include M data channels, where N and M are positive integers greater than 1, and the number of all data channels of the VBO display interface is denoted as L, and then L is a value obtained by adding M and N.

The image detection signal is extracted from a first data channel of the VBO display interface and is used as an image detection signal; the connectivity detection signal is extracted from the second data channel of the VBO display interface and is used as a signal for connectivity detection. Specifically, the image detection signal is a signal for detecting an image, and whether the first data channel is qualified or not is determined by detecting the image and according to the correctness of the image; and the connectivity detection signal is used for detecting connectivity, namely extracting a characteristic signal from the VBO signal, and performing characteristic analysis on the characteristic signal to determine the connectivity of the second data channel according to the characteristic information. It should be noted that, since the image detection signal and the connectivity detection signal are both signals extracted from the data channel of the VBO display interface, both the image detection signal and the connectivity detection signal are VBO signals. And the number of data channels contained in the first data channel and the second data channel is more than 1, the image detection signal and the connectivity detection signal are not only signals in one data channel.

Specifically, after the number of data channels of the VBO display interface is detected and determined, a preset data channel is selected from all the data channels of the VBO display interface to serve as a first data channel, then other data channels except the first data channel serve as second data channels, then VBO signals in the first data channel are sampled to obtain image detection signals, and the VBO signals in the second data channel are sampled to obtain connectivity detection signals. The preset rule for selecting the data channels may be set according to an actual situation, for example, the data channels are selected at intervals, or a set number of data channels with consecutive numbers are selected. Generally speaking, after the VBO signals transmitted in the data channels selected at intervals are subjected to image restoration, the obtained image integrity is higher than the image restoration integrity of the VBO signals transmitted in the data channels with continuous numbers. Thus, the set interval in the embodiment selects the data channel. In this case, the specific number of intervals and the number of selected data channels may be set according to actual conditions. Furthermore, the sampling frequency when the VBO signal in the first data channel is sampled and the sampling frequency when the VBO signal in the second data channel is sampled may be set according to actual conditions, and the same value may be set or different values may be set. Generally, the VBO display interface exists in the liquid crystal panel, and the signals included in the VBO display interface mainly include RGB data signals, a pixel clock signal DCLK, a line synchronization signal HS, a field synchronization signal VS, and an active display data strobe signal DE. All liquid crystal panels need to input RGB data signals and a pixel clock signal DCLK, but the way of using the synchronization signals is different. In an embodiment, when the VBO display interface is tested, one or two signals can be selected from signals included in the VBO display interface as connectivity detection signals according to specific situations; since the VBO signal itself output by the VBO display interface is an image signal, the signal obtained through the first data channel can be used for image detection and recorded as an image detection signal.

And S120, determining an image detection result according to the image detection signal.

The image detection result is a result obtained by detecting whether the image can be successfully restored according to the image detection signal. When the image can be successfully restored, the first data channel is qualified; otherwise, it indicates that the first data channel is faulty. Specifically, after the image detection signal is extracted, pixel points and RGB values corresponding to each pixel point are determined according to the image detection signal, then a corresponding image is output through the pixel points and the corresponding RGB values, and the image is compared with a preset original image to determine whether the output image is consistent with the original image, thereby determining an image detection result. The original image is pre-stored in the computer device, and the VBO display interface transmits a signal obtained by processing the original image.

And S130, determining a connectivity detection result according to the connectivity detection signal.

And the connectivity detection result is a result obtained by detecting whether the second data channel is connected or not. Specifically, when different signals are selected from the VBO display interface as the connectivity detection signals, the determination criteria for the connectivity detection result are also different. Exemplarily, when the pixel clock signal DCLK is selected from the signals contained in the VBO display interface as the connectivity detection signal, the frequencies of the pixel clock signal DCLK and the preset reference clock signal are directly compared and analyzed, and when the frequencies of the two clock signals are consistent, the connectivity detection result is qualified; otherwise, when the frequencies of the two clock signals are not consistent, the connectivity detection result is indicated to be unqualified.

And S140, generating a detection result of the VBO display interface based on the image detection result and the connectivity detection result.

The detection result of the VBO display interface may be understood as a result obtained by detecting all data channels of the VBO display interface.

In the embodiment, after the image detection result and the connectivity detection result are obtained, the image detection result and the connectivity detection result are analyzed to determine the detection result of the VBO display interface. Specifically, the image detection result and the connectivity detection result are sent to computer equipment connected with the testing equipment of the VBO display interface by the testing equipment of the VBO display interface, so that a tester can analyze the image detection result and the connectivity detection result and judge whether the image detection result and the connectivity detection result are qualified or not, and when the image detection result and the connectivity detection result are qualified, the detection result of the VBO display interface is qualified; otherwise, when one of the image detection result and the connectivity detection result is unqualified, the detection result of the VBO display interface is judged to be unqualified.

According to the technical scheme of the embodiment, the image detection signal and the connectivity detection signal transmitted in the VBO display interface are extracted, the image detection signal is a signal transmitted by a first data channel, the connectivity detection signal is a signal transmitted by a second data channel, and then the image detection result is determined according to the image detection signal; determining a connectivity detection result according to the connectivity detection signal; the technical means for generating the detection result of the VBO display interface based on the image detection result and the connectivity detection result solves the technical problems that in the prior art, images of VBO signals in all data channels of the VBO display interface are restored, hardware complexity is increased, and hardware cost is increased, realizes restoration of images of VBO signals in partial data channels of the VBO display interface, reduces occupation of SOC pin resources, and simultaneously reduces technical effects of hardware complexity and hardware cost.

Example two

Fig. 2 is a flowchart of a testing method for a VBO display interface according to a second embodiment of the present invention. The present embodiment is embodied on the basis of the above-described embodiments. Specifically, referring to fig. 2, the method for testing the VBO display interface provided in the embodiment specifically includes:

s2001, detecting the number of data channels of the VBO display interface.

Specifically, after the VBO signal is output by the driving board of the liquid crystal panel through the VBO display interface, the test device of the VBO display interface may determine the number of data channels of the VBO display interface according to the VBO signal, for example, when the VBO signal is an 8Lane signal, the number of data channels of the VBO display interface is 8; for another example, when the VBO signal is a 16Lane signal, the number of data channels of the VBO display interface is 16.

Generally, the VBO display interface can be integrated on an SOC, and the SOC can be integrated on a liquid crystal panel or a television panel, and at least one Field-Programmable Gate Array (FPGA) chip is integrated on the liquid crystal panel, wherein each FPGA chip can output at most 24Lane VBO signals. Specifically, the liquid crystal panel includes display modules with different resolutions, and the VBO signals of different Lane outputs are related to the resolution to be achieved by the display modules.

In the embodiment, in order to facilitate the description of the relationship between the number of data channels and the VBO signal, first, the relationship between the VBO signal and the resolution of the display module is described, and the pixel distribution format of the VBO signal in each data channel is specifically described. Generally, a display module with 4K resolution uses a VBO signal of 16Lane, and a display module with 2K resolution uses a VBO signal of 8 Lane. The VBO display interface is connected with the display module and used for outputting VBO signals of different Lanes. That is, the VBO signal obtained from the VBO display interface in the embodiment is a signal output by the display module. In this embodiment, in order to simplify the testing equipment of the VBO display interface, the VBO display interface is directly integrated on the driving board of the liquid crystal panel to output the VBO signal. In the embodiment, the distribution of the pixels of the VBO signal will be described by taking the VBO signal of 8Lane or 16Lane as an example. The pixel distribution formats of the VBO signal of 8Lane are 4, which are respectively non-split screen, 2 split screen, 4 split screen and 8 split screen. Fig. 3 is a schematic diagram of non-split screen and 2-split screen of VBO signal of 8Lane according to an embodiment of the present invention. As shown in fig. 3, when the Mode1 is Non-Division, the pixel distribution of the VBO signal of 8Lane is as follows, in Lane0-Lane8, the 1 st pixel is distributed from Lane0 in turn, that is, after the 8 th pixel is distributed into Lane7, the distribution is performed from Lane0 again until the distribution of 3840 pixels is completed; similarly, when the Mode2 is 2Division, that is, 2 split screens, the pixel points of the VBO signal of 8Lane are distributed as follows, in Lane0-Lane4, the pixel points are distributed in sequence from 1, that is, after the 4 th pixel point is distributed to Lane3, the pixel points are distributed again from Lane0 until Lane0-Lane4 is distributed, and then the pixel points are distributed again from Lane4-Lane7 until 3840 pixel points are distributed. Fig. 4 is a schematic diagram of a 4-split screen and an 8-split screen of a VBO signal of 8Lane according to an embodiment of the present invention. As shown in fig. 4, the pixel points are distributed in a similar manner when the Mode3 is 4Division, i.e., 4-split screen, and when the Mode4 is 8Division, i.e., 8-split screen, which will not be described again. The VBO signal output 8Lane is taken as an example, and the VBO signal and the number of data channels of the VBO display interface are described above. That is, after the test equipment of the VBO display interface receives the VBO signal, the number of data channels of the VBO display interface can be determined according to the number of lanes of the VBO signal.

Similarly, there are 4 pixel distribution formats of VBO signal of 16Lane, which are non-split screen, 2 split screen, 4 split screen and 8 split screen. Fig. 5 is a schematic diagram of non-split screen and 2-split screen of VBO signal of 16Lane according to an embodiment of the present invention. When the Mode1 is Non-split by Non-Division, the distribution of pixel points is shown as Mode1 in FIG. 5; and when the Mode2 is 2Division, that is, 2 split screen, the distribution of pixel points is as shown in Mode2 in fig. 5, and the specific distribution principle is similar to the distribution of pixel points of VBO signals of 8Lane without split screen and 2 split screen, which is not described herein again. Fig. 6 is a schematic diagram of a 4-split screen of the VBO signal of 16Lane according to an embodiment of the present invention. As shown in fig. 6, when the Mode3 is 4Division, that is, 4 split screens, the pixel distribution of 4 split screens of VBO signals similar to 8Lane is also adopted, and details thereof are not repeated here. When the VBO signal of 16Lane determines the number of data channels of the VBO display interface, a manner similar to that of determining the number of data channels of the VBO display interface by the VBO signal of 8Lane is not described herein again.

And S2002, determining a selection scheme of the first data channel and the second data channel according to the number of the data channels.

The selection scheme is a scheme for dividing all data channels of the VBO display interface. Specifically, the specific content of the selection scheme may be defined according to the actual situation, and the setting result of the selection scheme is to obtain a better sampling signal to be used as the image detection signal or the connectivity detection signal, so that a better detection result may be determined according to the image detection signal or the connectivity detection signal.

In the embodiment, since a complete image needs to be restored based on the image detection signal, an interval sampling mode is adopted. In this case, the step may specifically be:

and determining the channel interval number between the adjacent target data channels according to the data channel number.

Wherein the target data channel is a channel in the first data channel or a channel in the second data channel. It is understood that a channel in the first data channel may be a target data channel, and a channel in the second data channel may also be a target data channel. The channel interval number is the number of other data channels included between two adjacent target data channels.

Specifically, after the target data channels are determined, the number of channels between two adjacent target data channels is counted, and the number of channels between two adjacent target data channels is taken as the number of channel intervals. Illustratively, when the VBO signal of 8Lane is used, the number of data channels is 8, and then a selection scheme of taking 1 row every 1 row is required to be used, and when the target data channel is a channel in the first data channel or the second data channel, the number of channel intervals is 1; when a VBO signal of 16Lane is used, if the number of data channels is 16, a selection scheme of taking 1 row every 3 rows needs to be used, and if a target data channel is a channel in a first data channel, the number of channel intervals between adjacent target data channels is 3; and when the target data channel is a channel in the second data channel, the number of channel intervals between adjacent target data channels is 1.

Meanwhile, signals in partial data channels of the VBO display interface are selected as image detection signals to restore images, so that occupation of SOC pin resources is effectively reduced, processing complexity of a processor on high-resolution VBO signals is reduced, and in the embodiment, signals of 4 data channels are selected as image detection signals. That is, the number of the data channels included in the first data channel is 4, so as to ensure that the target image can be completely restored according to the image detection signal, and if the VBO signal of less than 4 data channels is used as the image detection signal, it may not be ensured that the image can be restored. For example, when the VBO signal of 8Lane is used, in order to ensure that the VBO signal can adapt to different pixel point distribution formats, that is, to ensure that the image detection signal can restore the target image, a selection scheme of taking 1 line every 1 line is generally used to determine the first data channel and the second data channel. When the VBO signal of 16Lane is used, the first data channel and the second data channel are determined by using a selection scheme of 1 row every 3 rows, so as to ensure the complete restoration of the image.

And S2003, selecting target data channels at intervals in the VBO display interface according to the channel interval quantity to form a first data channel.

In the embodiment, taking the number of data channels of the VBO display interface as 8 and the number of channel intervals as 1 as an example, the process of forming the first data channel is described as follows: selecting a target data channel by adopting a selection scheme of taking 1 row from every 1 row, namely selecting Lane0, Lane2, Lane4, Lane6 or Lane1, Lane3, Lane5 and Lane7 as the target data channels, so that Lane0, Lane2, Lane4 and Lane6 can form a first data channel; or Lane1, Lane3, Lane5 and Lane7 form the first data channel. Taking the number of data channels of the VBO display interface as 16 and the number of channel intervals as 3 as an example, the process of forming the first data channel is described as follows: and selecting a target data channel by adopting a selection scheme of taking 1 row every 3 rows. That is, Lane00, Lane04, Lane08 and Lane12 may be selected as target data channels, thereby constituting the first data channel. Of course, Lane01, Lane05, Lane09 and Lane13, Lane02, Lane06, Lane10 and Lane14, Lane03, Lane07, Lane11 and Lane15 may be cut out as the target data channel, and this is not limited.

S2004, marking the VBO to show that the unselected data channel in the interface is the second data channel.

Specifically, after the first data channel is determined, all the other data channels except the first data channel in the VBO display interface are the second data channel. Illustratively, when the number of data channels of the VBO display interface is 8 and a 2-split-screen pixel point distribution format is adopted, when a channel composed of Lane0, Lane2, Lane4 and Lane6 is intercepted as a first data channel, a channel composed of Lane1, Lane3, Lane5 and Lane7 is intercepted as a second data channel. For another example, when the number of data channels of the VBO display interface is 16 and a pixel point distribution format with 4-split screens is adopted, if a channel composed of Lane00, Lane04, Lane08, and Lane12 is intercepted as the first data channel, then a channel composed of Lane01, Lane02, Lane03, Lane05, Lane06, Lane07, Lane09, Lane010, Lane11, Lane13, Lane14, and Lane15 is intercepted as the second data channel.

And S2005, sampling the signal in the first data channel to obtain an image detection signal.

Specifically, after the first data channel is determined, signals in the respective data channels included in the first data channel are sampled, and the sampled signals are used as image detection signals. Illustratively, when the number of data channels of the VBO display interface is 16, and a channel composed of Lane00, Lane04, Lane08, and Lane12 is used as the first data channel, then signals transmitted in Lane00, Lane04, Lane08, and Lane12 are sampled to obtain image detection signals. It should be noted that the physical resolution of the VBO signal of 16Lane is 3840 × 2160@120Hz, where 3840 represents the number of pixels distributed on the X axis, 2160 represents the number of pixels distributed on the Y axis, and 120Hz represents the frame rate of the image detection signal. Specifically, signals in the first data channel are sampled, that is, signals transmitted in corresponding channels are adopted from Lane00, Lane04, Lane08 and Lane12, so that half of the number of pixels in a VBO signal of 16 lanes is ignored, the physical resolution of the VBO signal is converted from 3840 2160 to 960 2160, the effect of reducing the resolution of the VBO signal on a Y axis is achieved, a selection scheme of taking 1 row every 3 rows is directly adopted, the number of 2 pixels is compressed from 2160 to 540 through an SOC, and then the frame rate of the compressed VBO signal is reduced, so that a signal of 960 × 540@60Hz is obtained.

Of course, the VBO signal of 8Lane is also sampled in a manner similar to that of 16Lane to obtain an image detection signal, which is not described herein again. When the VBO signal of 8Lane is used, the frame rate of the VBO signal is not lowered.

And S2006, sampling the signal in the second data channel to obtain a connectivity detection signal.

Specifically, after the image detection signal is obtained, the signals in all the data channels except the first data channel are sampled to obtain the connectivity detection signal. The sampling mode of the connectivity detection signal is the same as the sampling mode of the image detection signal, and is not described herein again.

S2007, the image detection signal is converted into a first LVDS signal.

In the embodiment, when a test device of a VBO display interface receives a VBO signal, the VBO signal in a first data channel is sampled to be used as an image detection signal; then, the image data signal is converted by the signal conversion chip to generate a first LVDS signal. In the embodiment, the THCV216 chip is used to convert the VBO signal. The LVDS signal is an image detection signal of high rate, low noise, low power consumption, long distance, and high accuracy. Meanwhile, compared with the LVDS, VBO encoding is relatively complex, and the code rate is relatively high, so that the purpose of detecting the VBO display interface by using a low-end device is achieved by simplifying the encoding conversion from the VBO signal to the LVDS signal, that is, the purpose of converting the VBO signal into the LVDS signal is to reduce the processing complexity of the processor on the image detection signal. Specifically, since the image detection signal is a VBO signal, and the code rate, resolution, frame rate (refresh rate), and number of data channels of the VBO signal are high, and resources occupied by signal pins are increased, if the VBO signal is directly analyzed, a high-speed transceiver and a high-processing-speed processor need to be integrated into the test equipment of the VBO display interface, so that hardware cost and processing complexity are additionally increased.

And S2008, obtaining a target image according to the first LVDS signal.

Specifically, after the image detection signal is converted to generate the first LVDS signal, the first LVDS signal is directly output as the target image through the LVDS interface. The LVDS interface is integrated on the VBO display interface test equipment and connected with the display screen, so that the target image can be output to the display screen through the LVDS interface to be displayed. The LVDS interface is also called LVDS output interface, is a low-voltage differential signal technology interface, and is a digital video signal transmission mode developed for overcoming the defects of large power consumption, large EMI electromagnetic interference and the like when a TTL level mode is used for transmitting broadband high-code-rate data.

And S2009, determining an image detection result according to the comparison result of the target image and the original image.

The VBO display interface transmission signal is a signal corresponding to an original image.

It should be noted that, one end of the VBO display interface testing device is connected to the VBO display interface of the liquid crystal panel, and the other end is connected to the computer device. The liquid crystal panel generates a VBO signal through the driving board, and inputs the VBO signal to the testing equipment of the VBO display interface through the VBO display interface. And the display screen of the computer device is used to display the target image. Wherein the original image is an image pre-stored in the computer device. Specifically, when the test device of the VBO display interface outputs the target image to the computer device, the target image is displayed through the display screen of the computer device, then the pixel points of the target image and the pixel points of the original image are compared, if the number of the pixel points of the target image is consistent with the number of the pixel points of the original image, the image detection result is qualified, and then the first data channel for outputting the image detection signal is identified as qualified. The number of the pixels is consistent, the number of the pixels of the target image is not completely equal to the number of the pixels of the original image, and the number of the pixels can be understood to be consistent within an error range. It is noted that the image detection result is confirmed by the tester at one end of the computer device, that is, the test device of the VBO display interface outputs the target image to the display screen of the computer device, and then the tester performs comparison analysis on the target image and the original image. Of course, after the target image is output, the target image and the original image may be sent to the testing device of the VBO display interface, the target image and the original image are compared and analyzed by the testing device of the VBO display interface, and then the image detection result is directly output to the display screen of the computer device, so as to determine the image detection result.

And S2010, extracting characteristic signals in the connectivity detection signals.

Wherein the characteristic signal comprises a clock signal and/or a latch signal. In this embodiment, when detecting connectivity of the second data channel, that is, when detecting whether a data channel corresponding to the second data channel of the VBO display interface contains an effective VBO signal, to facilitate detecting connectivity, a representative clock signal and a latch signal are selected for detection and analysis. Wherein, the clock signal is the pixel clock signal DCLK; it is noted that, when the VBO signal is received by the testing device of the VBO display interface, the VBO signal is first converted into an LVDS signal by the THCV216 chip, and then the LVDS signal is sent to the processor in the testing device of the VBO display interface. Generally, after the test device of the VBO display interface is powered on, the test device of the VBO display interface receives a high-level latch signal, and the level of the latch signal is pulled down only when a valid VBO signal is included in a data channel of the VBO display interface, that is, when the THCV216 chip receives a valid VBO signal. It can be understood that the latch signal is a signal fed back to the driving board of the liquid crystal panel by the processor in the test equipment of the VBO display interface.

Specifically, when the characteristic signal is a clock signal, extracting the characteristic signal in the connectivity detection signal includes:

and S20101, converting the connectivity detection signal into a second LVDS signal.

Specifically, when detecting connectivity of the second data channel through the clock signal, the VBO signal serving as the connectivity detection signal is first converted into the second LVDS signal through the signal conversion chip THCV216, so as to reduce processing complexity of the VBO signal by the processor and reduce hardware cost of the test device of the VBO display interface. The specific implementation process of converting the connectivity detection signal into the second LVDS signal, and the process of converting the image detection signal into the first LVDS signal in step S220 are not described herein again. It is noted that, after the VBO signal is converted into the second LVDS signal, the clock signal is included in the second LVDS signal.

S20102, extracting a clock signal contained in the second LVDS signal.

It is noted that, in order to facilitate the detection of the connectivity of the second data channel, the clock signal is selected as the characteristic signal. The clock signal is a pixel clock signal DCLK. Specifically, after the second LVDS signal is obtained, the pixel clock signal DCLK included in the second LVDS signal is identified and extracted.

And S2011, determining a connectivity detection result according to the characteristic signal.

Specifically, when the characteristic signals are different signals, two different schemes are available for determining the connectivity detection result according to the characteristic signals. Specifically, when the characteristic signal is a clock signal, the step specifically includes:

and S20111, a reference clock signal in the first LVDS signal is acquired, and the first LVDS signal is obtained by converting the image detection signal.

Before detecting and analyzing the clock signal in the second LVDS signal, the reference clock signal needs to be extracted from the first LVDS signal. It is noted that the higher the resolution of the liquid crystal panel, the higher the frequency of the pixel clock signal DCLK. The number of pixel clocks in one line is equal to the number of pixels in one line of the liquid crystal panel. For example, in a liquid crystal panel of 1024 × 768, when there are 1024 pixels in a row, the number of pixel clocks in a row is also 1024.

Specifically, after the image detection signal is converted into the first LVDS signal by the signal conversion chip THCV216, the clock signal is extracted from the first LVDS signal to be used as a reference clock signal, and the connectivity of the second data channel is detected according to the reference clock signal.

And S20112, comparing the clock signal with the reference clock signal, and determining a connectivity detection result according to the comparison result.

Specifically, after the clock signal is extracted, the frequency of the clock signal is confirmed, then the frequency of the clock signal is compared and analyzed with the frequency of the reference clock signal, and if the frequencies of the clock signal and the reference clock signal are consistent, the VBO signal output by the second data channel is valid, and further the connectivity detection result of the second data channel is qualified; otherwise, if the clock signal is inconsistent with the reference clock signal, it indicates that the VBO signal output by the second data channel is not valid, and further indicates that the connectivity detection result of the second data channel is not qualified.

When the characteristic signal is the latch signal, after step S250, determining the connectivity detection result according to the characteristic signal includes:

s20113, a level value of the latch signal is acquired.

Specifically, when detecting whether the data channel is locked, the corresponding latch signal is obtained, and the level value of the latch signal is detected and confirmed.

And S20114, comparing the level value with a preset reference level value, and determining a connectivity detection result according to the comparison result.

It is noted that the preset reference level value is 0, i.e. the preset reference level value is a low level signal; the latch signal is generally a high level signal, and only when the second data channel includes a valid VBO signal, the latch signal is pulled down, i.e., the level value of the latch signal changes from 1 to 0. And if the level value of the latch signal is detected to be consistent with the preset reference level value, namely both the level value and the preset reference level value are 0, the connectivity detection result is qualified.

S2012, if the image detection result and the connectivity detection result are both qualified, determining that the detection result of the VBO display interface is qualified.

Specifically, when the image detection result is that the detection is qualified, it indicates that the first data channel is normal; and when the connectivity detection result is that the detection is qualified, indicating that the second data channel is normal. And if the first data channel and the second data channel are normal, the detection results of the VBO display interfaces forming all the data channels are qualified.

Otherwise, when one of the image detection result or the connectivity detection result is unqualified, the detection result of the VBO display interface is unqualified, and a prompt window pops up on a display screen of the computer equipment to prompt a tester that the detection result of the VBO display interface is unqualified.

In the technical scheme of the embodiment, on the basis of the above embodiment, by means of a technical means of intercepting part of VBO signals of the data channel as image detection signals to restore an image and detecting the connectivity of other data channels in combination with clock signals and latch signals, occupation of SOC pin resources is reduced, and hardware complexity and hardware cost are reduced.

EXAMPLE III

Fig. 7 is a block diagram of a testing apparatus for a VBO display interface according to a third embodiment of the present invention, where the apparatus may be implemented by hardware/software. As shown in fig. 7, the test apparatus includes: an extraction module 310, a first determination module 320, a second determination module 330, and a generation module 340.

The extracting module 310 is configured to extract an image detection signal and a connectivity detection signal transmitted in the VBO display interface, where the image detection signal is a signal transmitted by a first data channel, the connectivity detection signal is a signal transmitted by a second data channel, and the first data channel and the second data channel form all data channels of the VBO display interface;

a first determining module 320 for determining an image detection result according to the image detection signal;

a second determining module 330, configured to determine a connectivity detection result according to the connectivity detection signal;

and a generating module 340, configured to generate a detection result of the VBO display interface based on the image detection result and the connectivity detection result.

On the basis of the above embodiment, the testing apparatus for VBO display interface further includes: the detection module is used for detecting the number of data channels of the VBO display interface before extracting the image detection signal and the connectivity detection signal transmitted in the VBO display interface; and the third determining module is used for determining the selection schemes of the first data channel and the second data channel according to the number of the data channels.

On the basis of the foregoing embodiment, the third determining module includes: and determining the channel interval number between adjacent target data channels according to the data channel number, wherein the target data channels are channels in the first data channels or channels in the second data channels.

On the basis of the above embodiment, the extraction module includes: the device comprises a forming unit, a receiving unit and a processing unit, wherein the forming unit is used for selecting target data channels at intervals in a VBO display interface according to the number of channel intervals to form a first data channel when the target data channels are channels in the first data channel; the marking unit is used for marking the unselected data channel in the VBO display interface as a second data channel; an image detection signal obtaining unit, configured to sample a signal in the first data channel to obtain an image detection signal; and the user samples the signal in the second data channel to obtain the connectivity detection signal.

On the basis of the above embodiment, the first determination module includes: a first LVDS signal conversion unit to convert the image detection signal into a first LVDS signal; the target image obtaining unit is used for obtaining a target image according to the first LVDS signals; and the image detection result determining unit is used for determining an image detection result according to a comparison result of the target image and the original image, and the VBO display interface transmission signal is a signal corresponding to the original image.

On the basis of the above embodiment, the second determination module includes: the characteristic signal extraction unit is used for extracting a characteristic signal in the connectivity detection signal; and the connectivity determining unit is used for determining a connectivity detection result according to the characteristic signal.

On the basis of the above embodiment, the characteristic signal includes: a clock signal and/or a latch signal.

On the basis of the above-described embodiment, the feature signal extraction unit includes: the second LVDS signal subunit is used for converting the connectivity detection signal into a second LVDS signal when the characteristic signal is a clock signal; and the clock signal extraction subunit is used for extracting the clock signal contained in the second LVDS signal.

On the basis of the above embodiment, the connectivity determining unit includes: the acquisition subunit is configured to acquire a reference clock signal in the first LVDS signal when the characteristic signal is a clock signal, where the first LVDS signal is obtained by converting the image detection signal; and the first comparison determining subunit is used for comparing the clock signal with the reference clock signal and determining a connectivity detection result according to the comparison result.

On the basis of the above embodiment, the connectivity determining unit includes: a level value acquiring subunit, configured to acquire a level value of the latch signal when the characteristic signal is the latch signal; and the second comparison and determination subunit is used for comparing the level value with a preset reference level value and determining a connectivity detection result according to the comparison result.

On the basis of the above embodiment, the generation module includes: and the detection result determining unit is used for determining that the detection result of the VBO display interface is qualified if the image detection result and the connectivity detection result are qualified.

The testing device for the VBO display interface can be used for executing the testing method for the VBO display interface provided by any embodiment, and has corresponding functions and beneficial effects.

Example four

Fig. 8 is a flowchart illustrating processing of a VBO signal according to a fourth embodiment of the present invention. The test equipment of the VBO display interface comprises: a processor 410, a memory 420, an input device 430, an output device 440, and an interface module 450. The number of the processors 410 in the test equipment of the VBO display interface may be one or more, and one processor 410 is taken as an example in fig. 8. The number of the memory 420 in the test equipment of the VBO display interface may be one or more, and one memory 420 is taken as an example in fig. 8. The processor 410, the memory 420, the input device 430, the output device 440, and the interface module 450 of the VBO display interface test apparatus may be connected by a bus or other means, and fig. 8 illustrates the example of connection by a bus.

The memory 420 serves as a computer readable storage medium for storing software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the testing apparatus of the VBO display interface according to any embodiment of the present invention (for example, the extraction module, the first determination module, the second determination module, and the generation module in the testing apparatus of the VBO display interface). The memory 420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the device, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 420 may further include memory located remotely from processor 410, which may be connected to devices through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input device 430 is operable to receive a VBO signal output by the VBO display interface. The output device 440 may include an HDMI interface for transmitting the target image to the computer apparatus. The interface module 450 is configured to access a VBO display interface. It should be noted that the specific composition of the input device 430 and the output device 440 can be set according to actual situations.

The processor 410 executes various functional applications and data processing of the device by executing software programs, instructions and modules stored in the memory 420, that is, the testing method of the VBO display interface described above is implemented.

FIG. 9 is a flowchart illustrating a VBO signal processing method according to a fourth embodiment of the present invention. Fig. 9 is an exemplary illustration of a processing flow of the VBO signal when the testing device of the VBO display interface executes the testing method of the VBO display interface. Specifically, the processing flow of the VBO signal will be described by taking the example that the number of data channels of the VBO display interface is 8. After the VBO display interface outputs a VBO signal of 8Lane, a VBO signal of 2Lane is selected, the VBO signal is converted into an LVDS signal through a signal conversion chip THCV216, the LVDS signal is used as an image detection signal, the LVDS signal is acquired through an LVDS acquisition board, namely an FPGA board, the image detection signal is detected and analyzed to generate a target image, and the target image is sent to computer equipment connected with test equipment of the VBO display interface through an HDMI interface, so that a tester compares and analyzes the target image and a pre-stored original image to obtain an image detection result. The FPGA board is a collecting board used for collecting LVDS signals, the function of the FPGA board is equivalent to that of a processor, and the collected signals are processed and analyzed.

Certainly, after the VBO display interface outputs a VBO signal of 8Lane, another VBO signal of 6Lane may be selected, the VBO signal is converted into an LVDS signal through the signal conversion chip THCV216, when the VBO signal passes through the signal conversion chip, the FPGA board serving as the processor may control the THCV216 to perform detection analysis on the received VBO signal, if the VBO signal of 6Lane is a valid VBO signal, the THCV216 sets the latched signal low, that is, the level value of the latched signal is changed from 1 to 0, and sends the level value to the FPGA board, so that the FPGA board processes and analyzes the level value of the latched signal, and obtains a connectivity detection result, and then sends the connectivity detection result to the computer device through the network port or the serial port, so that a tester determines the detection result of the VBO display interface according to the connectivity detection result, and combines with the image detection result. In an embodiment, after the VBO signal of the 6Lane is converted into an LVDS signal, the FPGA board serving as the processor collects the LVDS signal, compares the frequencies of the clock signal in the LVDS signal and the clock signal summarized as the image detection signal, indicates that the connectivity detection result is qualified if the frequencies of the two clock signals are consistent, and sends the connectivity detection result to the computer device through a network or a serial port for summarizing, so that a tester determines the detection result of the VBO display interface according to the connectivity detection result and by combining the image detection result.

The test equipment for the VBO display interface can be used for executing the test method for the VBO display interface provided by any embodiment, and has corresponding functions and beneficial effects.

EXAMPLE five

An embodiment of the present invention further provides a storage medium containing computer-executable instructions, where the computer-executable instructions are executed by a computer processor to perform a VBO display interface testing method, including:

determining an image detection result according to the image detection signal;

Of course, the storage medium containing the computer-executable instructions provided in the embodiments of the present invention is not limited to the above-described operations of the VBO display interface test method, and may also perform related operations in the VBO display interface test method provided in any embodiments of the present invention, and has corresponding functions and advantages.

From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, and the computer software product may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions to enable a computer device (which may be a robot, a personal computer, a server, or a network device) to execute the method for testing the VBO display interface according to any embodiment of the present invention.

It should be noted that, in the testing apparatus for VBO display interface, each unit and each module included in the testing apparatus are only divided according to functional logic, but are not limited to the above division, as long as the corresponding function can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for testing a VBO display interface is characterized by comprising the following steps:

determining an image detection result according to the image detection signal;

2. The method for testing the VBO display interface of claim 1, wherein before the extracting the image detection signal and the connectivity detection signal transmitted in the VBO display interface, the method further comprises:

detecting the number of data channels of a VBO display interface;

3. The method for testing the VBO display interface of claim 2, wherein the determining the selection scheme of the first data channel and the second data channel according to the number of the data channels comprises:

4. The method of claim 3, wherein the target data channel is a channel of a first data channel,

sampling signals in the first data channel to obtain image detection signals;

5. The method for testing the VBO display interface of claim 1, wherein the determining the image detection result according to the image detection signal comprises:

converting the image detection signal into a first LVDS signal;

obtaining a target image according to the first LVDS signal;

and determining an image detection result according to the comparison result of the target image and the original image, wherein the image detection signal transmitted by the VBO display interface is a signal corresponding to the original image.

6. The method for testing the VBO display interface of claim 1, wherein the determining the connectivity detection result according to the connectivity detection signal comprises:

extracting characteristic signals in the connectivity detection signals;

7. The method for testing the VBO display interface of claim 6, wherein the characterization signal comprises: a clock signal and/or a latch signal.

8. The method for testing the VBO display interface of claim 7, wherein the characteristic signal is a clock signal, and the extracting the characteristic signal from the connectivity detection signal comprises:

converting the connectivity detection signal into a second LVDS signal;

a clock signal included in the second LVDS signal is extracted.

9. The method of claim 7, wherein the characteristic signal is a clock signal, and determining the connectivity test result according to the characteristic signal comprises:

10. The method of claim 7, wherein the signature signal is a latch signal, and determining the connectivity test result according to the signature signal comprises:

acquiring a level value of the latch signal;

11. The method for testing the VBO display interface of claim 1, wherein the generating the detection result of the VBO display interface based on the image detection result and the connectivity detection result comprises:

12. A testing device for a VBO display interface is characterized by comprising:

13. A test equipment for VBO display interface, comprising: an interface module, a memory, and one or more processors;

the interface module is used for accessing a VBO display interface;

the memory for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement a method for testing a VBO display interface as recited in any of claims 1-11.

14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method for testing a VBO display interface according to any one of claims 1 to 11.