CN104219519A - Testing adapter plate, system and method of audio and video interface - Google Patents

Abstract

The invention discloses an audio and video interface test adapter board, a test system and a test method. Wherein, the test adapter board of the audio-video interface includes: a first audio-video interface, which is used to connect to the test audio-video interface of the test terminal; a second audio-video interface, which is used to connect to the tested audio-video interface of the tested terminal; and The hot-swappable body is connected between the first audio-video interface and the second audio-video interface. When the voltage on the hot-swappable body is at a high level, the test audio-video interface and the tested audio-video interface are connected. When the voltage on the hot-swappable body is at a low level, the testing audio-video interface and the tested audio-video interface are disconnected. The present invention solves the problem in the related art that not only a lot of manpower is needed when the interface is manually hot-swapped, but also the DP interface is lost or even damaged due to repeated plugging and unplugging.

Description

Test adapter board, test system and test method for audio and video interface

technical field

The invention relates to the field of interface testing, in particular to an audio-video interface testing adapter board, a testing system and a testing method.

Background technique

At present, among the audio and video interfaces, the Display port (DP) interface occupies a dominant position due to its advantages of high speed and hot pluggability. In order to make various DP interface products on the market compatible with each other, it is necessary to conduct various hot-plug stability tests on the DP interface products.

In the related art, when performing a hot-plug stability test on a DP interface product, the interface is generally directly hot-plugged manually. In the process of hot plugging, there are not only many but also various problems, and when testing a product, hot plugging can often reach hundreds or even thousands of times.

As shown in Figure 1, the cable is connected to the sending end (that is, the test end 10') through the A port, and connected to the receiving end (that is, the tested end 30') through the B port, wherein the A port and the B port are both DP interface, in the traditional test process, manual hot-swapping not only consumes a lot of manpower, but also causes DP interface loss or even damage after repeated plugging and unplugging.

Aiming at the problem of manual hot-swapping test interface in the related art, which not only requires a lot of manpower, but also causes loss or even damage of the DP interface due to repeated plugging and unplugging, no effective solution has been proposed yet.

Contents of the invention

The main purpose of the present invention is to provide a test adapter board, a test system and a test method for an audio-video interface, so as to solve the problem of manual hot-swapping test interface, which not only needs to consume a lot of manpower, but also causes DP Interface loss, or even damage.

In order to achieve the aforementioned purpose, according to one aspect of the present invention, a test adapter board for audio and video interfaces is provided. The test adapter board includes: a first audio and video interface, used to connect to the test audio and video interface of the test terminal; a second audio and video interface, used to connect to the tested audio and video interface of the tested terminal; Between the first audio-video interface and the second audio-video interface, when the voltage on the hot-swappable body is at a high level, the test audio-video interface and the tested audio-video interface are connected In the on state, when the voltage on the hot-swappable body is at a low level, the testing audio-video interface and the tested audio-video interface are in an off-state.

Further, the hot-swappable body is a hot-swappable switch, wherein, when the hot-swappable switch is closed, the test audio-video interface and the tested audio-video interface are in the on state, and the hot-swappable When the plug-in switch is turned off, the testing audio-video interface and the tested audio-video interface are in a disconnected state.

Further, the test adapter board for the audio-video interface further includes: a USB interface for receiving control instructions, and the control instructions are used for controlling the hot-swap body to pull up or pull down its own voltage.

Further, the audio-video interface test adapter board further includes: a controller, configured to control the hot-swap body to pull up or pull down its own voltage according to the control instruction.

In order to achieve the aforementioned purpose, according to another aspect of the present invention, a testing system for an audio-video interface is provided. The test system includes: a test terminal, which has a test audio and video interface, and the test terminal is used for performing a performance test on the tested audio and video interface of the tested terminal; and a test adapter board for the audio and video interface, including: the first audio and video interface , connected to the test audio and video interface of the test terminal; a second audio and video interface, used to be connected to the tested audio and video interface of the tested terminal; and a hot plug body, connected to the first audio and video interface Between the video interface and the second audio-video interface, when the voltage on the hot-swappable body is at a high level, the audio-video interface for testing and the audio-video interface to be tested are in a connected state. When the voltage on the hot-swappable body is at a low level, the testing audio-video interface and the tested audio-video interface are disconnected.

Further, the test adapter board of the audio-video interface further includes: a USB interface for receiving control instructions, and the control instructions are used to control the hot-swap body to pull up or pull down its own voltage, wherein the The testing terminal is also used to send the control instruction to the USB interface; or the tested terminal is used to send the control instruction to the USB interface.

Further, the test system of the audio-video interface also includes: a test cable, the test cable is connected between the test terminal and the test adapter board of the audio-video interface, or the test cable is connected to Between the tested terminal and the test adapter board of the audio-video interface.

Further, the test cable has a third audio-video interface and a fourth audio-video interface, and the third audio-video interface and the fourth audio-video interface are interfaces with opposite polarities.

In order to achieve the foregoing purpose, according to yet another aspect of the present invention, a method for testing an audio-video interface is provided. The test method includes: a test terminal having a test audio-video interface, the test terminal is used to perform a performance test on the tested audio-video interface of the tested terminal; and a test adapter board for the audio-video interface, comprising: a first audio-video interface , connected to the test audio and video interface of the test terminal; a second audio and video interface, used to be connected to the tested audio and video interface of the tested terminal; and a hot plug body, connected to the first audio and video interface Between the video interface and the second audio-video interface, when the voltage on the hot-swappable body is at a high level, the audio-video interface for testing and the audio-video interface to be tested are in a connected state. When the voltage on the hot-swap body is at a low level, the audio-video interface for testing and the audio-video interface to be tested are disconnected, wherein, when the voltage on the hot-swap body is at a high level, the The testing end sends a preset static image to the tested end, the preset static image has a preset cyclic check code, and the tested end is used to receive the preset static image, and according to the received preset The static image generates a feedback loop check code, and feeds back the feedback loop check code to the test end; the test end receives the feedback loop check code, and judges whether the feedback loop check code is equal to the The preset cyclic check code, and when it is judged that the feedback cyclic check code is equal to the preset cyclic check code, the performance test of the audio-video interface under test is successful.

Further, the test adapter board of the audio-video interface further includes: a USB interface for receiving a control command, and the control command is used to control the hot-swap body to pull up or pull down its own voltage; the controller, It is used to control the hot-swap body to pull up or pull down its own voltage according to the control instruction, wherein the voltage on the hot-swap body is controlled to be at a high level in the following manner: the USB interface receives the a control command sent by the test terminal or the terminal under test; and the controller controls the hot-swap body to be in the on state according to the control command, wherein, in the on state, the hot-swap body The voltage on is high.

Through the present invention, the first audio-video interface is used to be connected to the test audio-video interface of the test terminal; the second audio-video interface is used to be connected to the tested audio-video interface of the tested terminal; and the hot-swappable body is connected to the Between an audio-video interface and the second audio-video interface, when the voltage on the hot-swappable body is a high level, the test audio-video interface and the tested audio-video interface are connected, and the voltage on the hot-swappable body is When the power level is low, the audio and video interface being tested is disconnected from the audio and video interface being tested, which solves the problem of manual hot-plugging of the testing interface, which not only requires a lot of manpower, but also causes the loss or even damage of the DP interface after multiple plugging and unplugging The problem, and then achieve the effect of automatic hot swap and loss.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is the schematic diagram according to the test system of the audio-video interface of related art;

Fig. 2 is the schematic diagram of the test adapter board of the audio-video interface according to the embodiment of the present invention;

Fig. 3 is the schematic diagram of the test system of the audio-video interface according to the embodiment of the present invention; And

Fig. 4 is a flowchart of a testing method for an audio-video interface according to an embodiment of the present invention.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

In order for those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the specification and claims of the present invention and the preceding drawings are used to distinguish similar objects, but not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be noted that the present invention is used to realize automatic hot plugging of Display port (DP) interface or HDMI interface. The present invention will be described in detail below with a Display port (DP) interface.

According to an embodiment of the present invention, a test adapter board for audio and video interfaces is provided, and the test adapter board for audio and video interfaces is used to realize the purpose of automatic hot plugging when testing the audio and video interfaces.

Fig. 2 is a schematic diagram of a test adapter board for an audio-video interface according to an embodiment of the present invention.

As shown in FIG. 2 , the test adapter board includes: a first audio-video interface 202 , a second audio-video interface 204 and a hot-swappable body 206 .

The first audio-video interface 202 is used to be connected to the test audio-video interface of the test terminal; The second audio-video interface 204 is used to be connected to the tested audio-video interface of the tested terminal; and the hot plug body 206 is connected to the first audio-video interface and Between the second audio and video interfaces, when the voltage on the hot-swap body is high level, the test audio-video interface and the tested audio-video interface are in the connected state, and when the voltage on the hot-swap body is low level, the test The audio and video interface and the tested audio and video interface are disconnected.

It should be noted that the first audio-video interface 202 and the second audio-video interface 204 are interfaces with opposite polarities. For example, the first audio-video interface 202 and the second audio-video interface 204 may be "DP female" and "DPmale" respectively; or, the aforementioned two interfaces may be "DP male" and "DP female" respectively. Correspondingly, for example, when the first audio-video interface 202 is "DP female", the test audio-video interface can be "DP male"; similarly, when the second audio-video interface 204 is "DP male", the tested audio The video interface can be "DP female".

The hot plug body 206 is an HPD (hot plug pin, referred to as a hot plug pin), which has a switch structure. When the switch structure of the hot-swap body 206 was closed, the voltage on the hot-swap body 206 was a high level; when the switch structure of the hot-swap body 206 was disconnected, the voltage on the hot-swap body 206 was a low level . It should be noted that the closing or opening of the switch structure of the hot-swappable body 206 can be controlled manually, or it can also be controlled by a software program. Preferably, it can be controlled by means of a software program.

Specifically, when in use, the aforementioned test adapter board can be connected between the test terminal and the tested terminal, and the hot plug can be simulated by changing the voltage on the hot plug body on the test adapter board, so-called simulated hot plug Unplugging means that the connection between the test terminal and the terminal under test is hot-swappable, but the first audio-video interface 202 is not separated from the test terminal, and the second audio-video interface 204 is not separated from the terminal under test.

In this way, by adding a test adapter board between the test terminal and the tested terminal, since the DP standard uses HPD (hot plug pin, referred to as hot plug pin) to identify hot plug, therefore, the test adapter board The voltage of the hot-swappable body set can be used as an identification object to realize the purpose of simulating hot-swapping and achieve the effect of automatic hot-swapping. Since automatic hot-swapping does not really connect the interface of the test adapter board to the interface of the test terminal and/or Or perform hot plugging on the interface of the tested end, so the interface of the tested end and the interface of the tested end do not produce loss.

Preferably, in the embodiment of the present invention, the hot-swappable body can be a hot-swappable switch, wherein, when the hot-swappable switch is closed, the audio-video interface for testing and the audio-video interface to be tested are in an on state, and the hot-swappable When the switch is off, the testing audio and video interface and the tested audio and video interface are disconnected. When the hot plug switch is switched from the closed state to the disconnected state or from the disconnected state to the closed state, a hot plug occurs between the test terminal and the tested terminal. Moreover, when the hot-swap switch is closed, the test end can perform performance tests on the tested end through the test program and test cases; when the hot-swap switch is turned off, the test end cannot perform performance tests on the tested end.

Through the embodiments of the present invention, the structure of the test adapter board can be simplified to facilitate hot plugging.

Preferably, in the embodiment of the present invention, as shown in FIG. 2 , the aforementioned test adapter board may further include: a USB interface 208 . The USB interface can be used to receive a control instruction, and the control instruction can be used to control the hot-swap body to pull up or pull down its own voltage. Specifically, the USB interface can receive control commands from the testing terminal or control commands from the tested terminal.

Through the embodiments of the present invention, automatic control of the hot-swappable body can be realized, preventing manual intervention from causing operation errors or wasting manpower.

Optionally, in the embodiment of the present invention, as shown in FIG. 2 , the aforementioned test adapter board may further include: a controller (MCU) 210 . The MCU is used to control the hot-swap body to pull up or pull down its own voltage according to the control command. Specifically, the test terminal (DP Source, such as Notebook and DP transmitter board, etc.) sends a control command to control the I/O port of the MCU, thereby controlling the input of the DP tested terminal (that is, the receiving terminal) to the testing terminal (that is, the transmitting terminal) ) HPD level (high level or low level) to achieve the purpose of simulating the hot plug action of the DP/HDMI interface.

Through the embodiments of the present invention, full-automatic control of the hot-swappable body can be realized, preventing manual intervention from causing operation errors or wasting manpower.

According to an embodiment of the present invention, an audio-video interface testing system is provided, and the audio-video interface testing system is used to realize the purpose of automatic hot plugging when testing the audio-video interface. It should be noted that all the test adapter boards for audio and video interfaces in the foregoing embodiments can be applied to a test system for audio and video interfaces.

Fig. 3 is a schematic diagram of a testing system for an audio-video interface according to an embodiment of the present invention.

As shown in Figure 3, this test system comprises: the test adapter plate 20 of test terminal 10 and audio-video interface, wherein, the test adapter plate 20 of audio-video interface comprises: first audio-video interface 202, the second audio-video interface 204 And the hot-swappable body 206.

The test terminal 10 has a test audio and video interface 102 . The testing terminal 10 is used for performance testing of the tested audio-video interface 302 of the tested terminal 30 . The first audio and video interface 202 is connected to the test audio and video interface 102 of the test terminal 10; the second audio and video interface 204 is used to be connected to the tested audio and video interface 302 of the tested terminal 30; Between the audio-video interface 202 and the second audio-video interface 204, when the voltage on the hot-swappable body 206 is a high level, the audio-video interface 102 for testing and the audio-video interface 302 to be tested are connected states, and the hot-swappable body When the voltage on 206 is at low level, the testing audio-video interface 102 and the tested audio-video interface 302 are disconnected.

The hot plug body 206 is an HPD (hot plug pin, referred to as a hot plug pin), which has a switch structure. When the switch structure of the hot-swap body 206 was closed, the voltage on the hot-swap body 206 was a high level; when the switch structure of the hot-swap body 206 was disconnected, the voltage on the hot-swap body 206 was a low level . It should be noted that the closing or opening of the switch structure of the hot-swappable body 206 can be controlled manually, or it can also be controlled by a software program. Preferably, it can be controlled by means of a software program.

Specifically, when in use, the aforementioned test adapter board can be connected between the test terminal 10 and the tested terminal 30, and the hot plug can be simulated by changing the voltage on the hot plug body 206 on the test adapter board, The so-called analog hot plug means that the connection between the test terminal 10 and the tested terminal 30 realizes hot plug, but the first audio and video interface 202 is not separated from the test audio and video interface 102 of the test terminal 10, and the second audio and video interface 204 It is also not separated from the tested audio-video interface 302 of the tested terminal 30 .

In this way, by adding a test adapter board 20 of an audio-video interface between the test terminal 10 and the tested terminal 30, since the DP standard adopts HPD (hot plug pin, referred to as hot plug pin) to identify hot plug, Therefore, the voltage of the hot-swappable body 206 provided on the test adapter board can be used as an identification object to realize the purpose of simulating hot-swapping, and to achieve the effect of automatic hot-swapping. The interface of the test terminal 10 and/or the interface of the tested terminal 30 are hot-swappable, so the interface of the test terminal 10 and the interface of the tested terminal 30 do not generate loss.

Preferably, in the embodiment of the present invention, the hot-swappable body may be a hot-swappable switch. For the detailed introduction of the hot-swappable switch, please refer to the aforementioned part of the test adapter board, which will not be repeated here.

Preferably, in the embodiment of the present invention, as shown in FIG. 3 , the test adapter board 20 of the audio-video interface may also include: a USB interface 208, which is used to receive control instructions, and the control instructions are used to control the hot plug Pulling up or pulling down its own voltage, wherein, the test terminal is also used to send control commands to the USB interface; or the tested terminal is used to send control commands to the USB interface. For the detailed introduction of the USB interface, please refer to the aforementioned part of the test adapter board, and will not repeat it here.

Preferably, in the embodiment of the present invention, as shown in FIG. 3 , the test adapter board 20 of the audio-video interface may further include: a controller 210, and the controller 210 is used to control the hot-swap body to be pulled up or pulled up according to the control instruction. Low self-voltage, its detailed introduction can refer to the aforementioned part of the test adapter board, and will not be repeated here.

Preferably, in the embodiment of the present invention, as shown in FIG. 3 , the aforementioned testing system further includes: a testing cable 40 . The test cable 40 can be connected between the test terminal 10 and the test adapter board 20 of the audio-video interface, or the test cable 40 can be connected between the tested terminal 30 and the test adapter board 20 of the audio-video interface.

Since there is a preset distance between the testing end 10 and the tested end 30 during the actual testing process, the testing environment of the tested end 30 can be truly simulated by using the test cable 40 .

According to an embodiment of the present invention, a method for testing an audio-video interface is provided, and the method for testing the audio-video interface is used to realize the purpose of automatic hot plugging when testing the audio-video interface. The testing method of the audio-video interface can run on the computer processing equipment. It should be noted that the testing method of the audio-video interface provided by the embodiment of the present invention can be executed by the testing system of the audio-video interface of the embodiment of the present invention, and the testing system of the audio-video interface of the embodiment of the present invention can also be used to execute The test method of the audio-video interface of the embodiment of the present invention.

Fig. 4 is a flowchart of a testing method for an audio-video interface according to an embodiment of the present invention.

As shown in Figure 4, the method includes the following steps S402 to S408:

Step S402, when the voltage on the hot-swappable body is at a high level, the testing end sends a preset static image to the tested end.

The test end has a test audio and video interface, and the test end is used to perform a performance test on the tested audio and video interface of the tested end. For example, the test end can perform a stability test on the tested end.

The test adapter board of the audio-video interface includes: a first audio-video interface, a second audio-video interface and a hot-swappable body, wherein, when performing a test task, the first audio-video interface is connected to the test audio-video interface of the test terminal; Two audio and video interfaces are used to be connected to the tested audio and video interface of the tested terminal; and the hot plug body is connected between the first audio and video interface and the second audio and video interface, when the voltage on the hot plug body is a high level , the testing audio and video interface and the tested audio and video interface are in the connected state, and when the voltage on the hot-swappable body is low, the testing audio and video interface and the tested audio and video interface are in the disconnected state.

Specifically, it should be noted that the first audio-video interface and the second audio-video interface are interfaces with opposite polarities. For example, the first audio-video interface and the second audio-video interface may be "DP female" and "DP male" respectively; or, the aforementioned two interfaces may be "DP male" and "DP female" respectively. Correspondingly, for example, when the first audio and video interface is "DP female", the test audio and video interface can be "DP male"; similarly, when the second audio and video interface is "DP male", the tested audio and video interface Can be "DP female".

The hot plug body is HPD (hot plug pin, referred to as hot plug pin), which has a switch structure. When the switch structure of the hot-swap body is closed, the voltage on the hot-swap body is high level; when the switch structure of the hot-swap body is disconnected, the voltage on the hot-swap body is low level. It should be noted that the closing or opening of the switch structure of the hot-swappable body can be controlled manually, or it can also be controlled by a software program. Preferably, it can be controlled by means of a software program.

Specifically, when in use, the aforementioned test adapter board can be connected between the test terminal and the tested terminal, and the hot plug can be simulated by changing the voltage on the hot plug body on the test adapter board. Plugging means that the connection between the test terminal and the tested terminal is hot-swappable, but the first audio and video interface is not separated from the test audio and video interface of the test terminal, and the second audio and video interface is not separated from the tested audio and video interface of the tested terminal. Interface separation.

The preset static image has a preset cyclic check code, wherein the preset static image may be a fixed static image, the value of the preset cyclic check code is a known value, and the cyclic check code is CRC. The tested end is used to receive a static image, generate a feedback loop check code according to the received preset static image, and feed back the feedback loop check code to the test end.

Step S404, the test end receives the feedback loop check code.

It should be noted that the test end can receive the feedback loop check code (CRC DPCD) sent by the tested end after delaying a predetermined system display time, so that the accuracy of the received feedback loop check code can be improved.

In step S406, the testing end judges whether the feedback loop check code is equal to the default loop check code.

In step S408, when the testing end judges that the feedback loop check code is equal to the preset loop check code, the performance test of the audio-video interface under test is successful.

When it is determined that the feedback loop check code is not equal to the preset loop check code, the performance test of the audio-video interface under test fails. It should be noted that the test terminal is provided with test programs and test cases, and the detailed introduction of the test adapter board and test system involved in this test method is the same as that of the foregoing embodiments, and will not be repeated here.

Through the embodiment of the present invention, because it can be programmed to realize automatic testing, the effect of saving manpower and reducing the loss of the interface is achieved. At the same time, because the delay between hot plugging and unplugging can be programmed and adjusted, the effect of flexible control of hot plugging is achieved. .

Optionally, in the embodiment of the present invention, the test adapter board of the audio-video interface may also include: a USB interface and a controller, the USB interface is used to receive a control instruction, and the control instruction is used to control the hot-swap body to pull high Or pull down its own voltage; the controller is used to control the hot-swap body to pull up or pull down its own voltage according to the control command, wherein the voltage on the hot-swap body can be controlled to a high level by the following methods:

S2, the USB interface receives the control command sent by the test terminal or the terminal under test.

S4, the controller controls the hot-swappable body to be in the on state according to the control instruction, wherein, in the on state, the voltage on the hot-swap body is at a high level.

It should be noted that, similarly, the USB interface receives the control command sent by the test terminal or the terminal under test; the controller controls the hot-swap body to be in the disconnected state according to the control command, wherein, in the disconnected state, the voltage is low.

It should be noted that the aforementioned test terminal can be Display port source, and Display port source can include DVD/Notebook/Mobile devices; the tested terminal can be Display port Sink, and Display port Sink can be TV/Monitors.

It should be noted that the steps shown in the flowcharts of the accompanying drawings may be performed in a computer system, such as a set of computer-executable instructions, and that although a logical order is shown in the flowcharts, in some cases, The steps shown or described may be performed in an order different than here.

Obviously, those skilled in the art should understand that each step of the present invention mentioned above can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed on a network formed by multiple computing devices, optional In other words, they can be implemented with executable program codes of computing devices, thus, they can be stored in storage devices to be executed by computing devices, or they can be made into individual integrated circuit modules, or a plurality of steps in them Made into a single integrated circuit module to achieve. As such, the present invention is not limited to any specific combination of hardware and software.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a test adaptor plate for audio-video interface, is characterized in that, comprising:

First audio-video interface, for being connected to the test tone video interface of test lead;

Second audio-video interface, for being connected to the tested audio-video interface of tested end; And

Hot plug body, be connected between described first audio-video interface and described second audio-video interface, when voltage on described hot plug body is high level, described test tone video interface and described tested audio-video interface are on-state, when voltage on described hot plug body is low level, described test tone video interface and described tested audio-video interface are off state.

2. the test adaptor plate of audio-video interface according to claim 1, it is characterized in that, described hot plug body is hot plug switch, wherein, when described hot plug switch closes, described test tone video interface and described tested audio-video interface are on-state, and when described hot plug switch disconnects, described test tone video interface and described tested audio-video interface are off state.

3. the test adaptor plate of audio-video interface according to claim 1, is characterized in that, also comprise: USB interface, and for receiving control command, described control command draws high for controlling described hot plug body or drag down self voltage.

4. the test adaptor plate of audio-video interface according to claim 3, is characterized in that, also comprise: controller, for controlling the voltage that self was drawn high or dragged down to described hot plug body according to described control command.

5. a test macro for audio-video interface, is characterized in that, comprising:

Test lead, has test tone video interface, and described test lead is used for carrying out performance test to the tested audio-video interface of tested end; And

The test adaptor plate of audio-video interface, comprising: the first audio-video interface, is connected to the described test tone video interface of described test lead; Second audio-video interface, for being connected to the described tested audio-video interface of described tested end; And hot plug body, be connected between described first audio-video interface and described second audio-video interface, when voltage on described hot plug body is high level, described test tone video interface and described tested audio-video interface are on-state, when voltage on described hot plug body is low level, described test tone video interface and described tested audio-video interface are off state.

6. the test macro of audio-video interface according to claim 5, is characterized in that, the test adaptor plate of described audio-video interface also comprises: USB interface, for receiving control command, described control command draws high for controlling described hot plug body or drags down self voltage, wherein

Described test lead is also for sending described control command to described USB interface; Or

Described tested end is used for sending described control command to described USB interface.

7. the test macro of audio-video interface according to claim 5, it is characterized in that, also comprise: test cable, described test cable is connected between the test adaptor plate of described test lead and described audio-video interface, or described test cable is connected between described tested end and the test adaptor plate of described audio-video interface.

8. the test macro of audio-video interface according to claim 7, is characterized in that, described test cable has the 3rd audio-video interface and the 4th audio-video interface, and described 3rd audio-video interface and described 4th audio-video interface are opposite polarity interface.

9. a method of testing for audio-video interface, is characterized in that, comprising:

Test lead, has test tone video interface, and described test lead is used for carrying out performance test to the tested audio-video interface of tested end; And

The test adaptor plate of audio-video interface, comprising: the first audio-video interface, is connected to the described test tone video interface of described test lead; Second audio-video interface, for being connected to the described tested audio-video interface of described tested end; And hot plug body, be connected between described first audio-video interface and described second audio-video interface, when voltage on described hot plug body is high level, described test tone video interface and described tested audio-video interface are on-state, when voltage on described hot plug body is low level, described test tone video interface and described tested audio-video interface are off state

Wherein, when voltage on described hot plug body is high level, described test lead sends to described tested end and presets still image, described default still image has preset loop check code, described tested end is for receiving described default still image, and generate feedback cyclic check code according to the default still image received, and described feedback cyclic check code is fed back to described test lead; Described test lead receives described feedback cyclic check code, and judge whether described feedback cyclic check code equals described preset loop check code, and when judging that described feedback cyclic check code equals described preset loop check code, to the performance test success of described tested audio-video interface.

10. the method for testing of audio-video interface according to claim 9, it is characterized in that, the test adaptor plate of described audio-video interface also comprises: USB interface, and for receiving control command, described control command draws high for controlling described hot plug body or drag down self voltage; Controller, for controlling the voltage that self was drawn high or dragged down to described hot plug body according to described control command, wherein, the voltage controlled in the following manner on described hot plug body is high level:

Described USB interface receives the control command of described test lead or described tested end transmission; And

Described controller controls described hot plug body according to described control command and is in on-state, and wherein, in described on-state, the voltage on described hot plug body is high level.