CN109872666B - Lighting test device, lighting test system and lighting test method for display device - Google Patents
Lighting test device, lighting test system and lighting test method for display device Download PDFInfo
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Abstract
The invention discloses a lighting test device, a lighting test system and a lighting test method of a display device. The lighting test device includes: a port for receiving first test information; the first control module is used for providing a first test signal for the display device according to the first test information; the second control module is used for providing a second test signal for the display device according to the pre-stored second test information; and the switching module is connected with the port to detect the voltage state of a terminal to be detected in the port, and when the voltage state representation port is in a connection state, the switching module starts the first control module and turns off the second control module, and when the voltage state representation port is in a disconnection state, the switching module starts the second control module and turns off the first control module. The voltage state on the terminal to be detected in the port is judged through the switching module to control the first control module and the second control module to be turned on and off, so that the problem that the display device cannot normally display a lighting image is solved.
Description
Technical Field
The present invention relates to the field of testing, and more particularly, to a lighting test device, a lighting test system, and a lighting test method for a display device.
Background
Liquid Crystal Display (LCD) devices have many advantages such as being light and thin, saving energy, and having no radiation, and thus have gradually replaced conventional Cathode Ray Tube (CRT) displays. Liquid crystal displays are widely used in high definition digital televisions, desktop computers, Personal Digital Assistants (PDAs), notebook computers, mobile phones, digital cameras, and other electronic devices.
Generally, the liquid crystal display device must be subjected to a lighting test before it is shipped. The lighting test is to input timing information of the liquid crystal display device, and gray scale voltages, data signals, etc. of the red, green, and blue pixels to the liquid crystal display device to check whether the liquid crystal display device can normally operate.
With the increasing variety of display devices and the improving functions of lighting test devices, the lighting test devices are used in a manner that codes of lighting pictures with different functions are burned into the lighting test devices, and the lighting test devices perform lighting tests on the display devices according to the codes of the lighting pictures with different functions. However, the lighting frames required by different types of display devices are different, and if the lighting frame is changed, the lighting test device needs to be edited and burned again. However, when the lighting test is performed on the display device, it is often necessary to observe the lighting picture displayed by the display device in real time, and the repeated burning operation performed on the lighting test device reduces the test efficiency.
In order to solve the above problems, the prior art combines the modes of controlling the terminal lighting test and selects the required mode through a hardware dial switch. Although the above-mentioned scheme can solve the problem of repeated editing and burning, the user often forgets the dialing mode of the two modes to cause the display device to fail to normally display the lighting picture, so that the problem of the display device cannot be correctly reflected, and the accuracy of the test is reduced.
Disclosure of Invention
In view of this, the present invention provides a lighting test device, a lighting test system and a lighting test method for a display device, which determine a voltage state at a terminal to be detected in a port through a switching module to control the on/off of a first control module and a second control module, thereby solving the problem that the display device cannot normally display a lighting picture.
According to a first aspect of embodiments of the present invention, there is provided a lighting test device for a display device, including: a port for receiving first test information; the first control module is used for providing a first test signal for the display device according to the first test information; the second control module is used for providing a second test signal for the display device according to prestored second test information; and the switching module is connected with the port to detect the voltage state of a terminal to be detected in the port, when the voltage state represents that the port is in a connection state, the switching module starts the first control module and turns off the second control module, and when the voltage state represents that the port is in a disconnection state, the switching module starts the second control module and turns off the first control module.
Further, the switching module includes: the microprocessor control unit provides a first control signal; and the judging unit is respectively connected with the port, the first control module and the second control module, and detects the voltage state on the terminal to be detected according to the first control signal so as to control the first control module and the second control module to be turned on and off.
Further, the first control module includes a micro control unit and a lighting unit, when the judging unit controls the first control module to be turned on, the micro control unit receives and provides the first test information to the lighting unit, and the lighting unit provides the first test signal to the display device according to the first test information.
Further, the second control module includes: a storage unit that stores the second test information; the processing unit reads the second test information from the storage unit when the second control module is started and provides a second control signal; a programming unit converting the second test information into an intermediate signal; and a bridge unit converting the intermediate signal into the second test signal according to the second control signal.
Further, the first test information and the second test information each include at least one of power voltage, picture information, timing information, and code information.
Further, the intermediate signal comprises: a transistor-transistor logic level signal, a horizontal synchronization signal, a vertical synchronization signal, and an active display data strobe signal.
According to a second aspect of the embodiments of the present invention, there is provided a lighting test system for a display device, including the lighting test device; and the control terminal provides the first test information, when the control terminal is connected with the port, the voltage state is high level, and when the control terminal is disconnected with the port, the voltage state is low level.
Further, the control terminal includes: the judging module is used for judging whether the pre-stored first test information exists or not; the information acquisition module is connected with the judgment module, when the first pre-stored test information does not exist, the information acquisition module is arranged according to the type of the display device and provides the corresponding first test information, and when the first pre-stored test information exists, the information acquisition module directly provides the first pre-stored test information.
According to a third aspect of the embodiments of the present invention, there is provided a lighting test method of a display device, including: detecting the voltage state on a terminal to be detected in the port; and when the voltage state represents that the port is connected with the control terminal, providing a first test signal to the display device according to first test information provided by the control terminal, and when the voltage state represents that the port is disconnected with the control terminal, providing a second test signal to the display device according to pre-stored second test information.
Further, the step of controlling the first test information provided by the terminal includes: judging whether the first pre-stored test information exists or not; and when the pre-stored first test information does not exist, setting and providing the corresponding first test information according to the type of the display device, and when the pre-stored first test information exists, directly providing the pre-stored first test information.
According to the lighting test device provided by the embodiment of the invention, the voltage state on the terminal to be detected in the port is judged through the switching module to control the on and off of the first control module and the second control module, so that the corresponding first test signal and the second test signal are provided for the display device, and the lighting test is carried out on the display device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.
Fig. 1 is a schematic diagram illustrating a lighting test system according to an embodiment of the present invention.
Fig. 2 shows a schematic diagram of the spot lamp testing apparatus of fig. 1.
Fig. 3 is a flowchart illustrating an operation of the control terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of the present disclosure.
Fig. 1 is a schematic diagram illustrating a lighting test system according to an embodiment of the present invention.
As shown in fig. 1, the lighting test system according to the embodiment of the present invention is used for performing a lighting test on a display device 10, and includes a lighting test device 100 and a control terminal 200. The lighting test device 100 includes: the control terminal 200 includes a determining module and an information obtaining module, and includes a port 110, a switching module 120, a first control module 130, and a second control module 140.
The judging module is used for judging whether pre-stored first test information exists or not, the information acquiring module is connected with the judging module, when the pre-stored first test information does not exist, the information acquiring module is arranged according to the type of the display device and provides corresponding first test information, and when the pre-stored first test information exists, the information acquiring module directly provides the pre-stored first test information.
The port 110 is configured to receive first test information provided by the control terminal 200, and in this embodiment, the port 110 is connected to the control terminal 200 through a Universal Asynchronous Receiver/Transmitter (UART).
The switching module 120 is connected to the port 110, the first control module 130, and the second control module 140, respectively, the switching module 120 detects a voltage state at a terminal to be detected in the port, when the voltage state indicates that the port is in a connected state, the switching module 120 turns on the first control module 130 and turns off the second control module 140, when the voltage state indicates that the port 110 is in a disconnected state, the switching module 120 turns on the second control module 140 and turns off the first control module 130, in this embodiment, when the control terminal 200 is connected to the port 110, the voltage state is a high level, and when the control terminal 200 is disconnected from the port 110, the voltage state is a low level.
The first control module 130 provides a first test signal Vtest1 to the display device 10 according to the first test information, and the second control module 140 provides a second test signal Vtest2 to the display device 10 according to the pre-stored second test information.
In the present embodiment, the first test information and the second test information each include at least one of power voltage, picture information, timing information, and code information.
Fig. 2 shows a schematic diagram of the spot lamp testing device of fig. 1.
As shown in fig. 2, the switching module 120 includes a microprocessor control unit 121 and a determining unit 122, wherein the microprocessor control unit 121 provides a first control signal Vctr1, the determining unit 122 is respectively connected to the port 110, the microprocessor control unit 121, the first control module 130 and the second control module 140, and detects a voltage state at a terminal to be detected according to the first control signal Vctr1 to control the first control module 130 and the second control module 140 to be turned on and off.
The first control module 130 includes a micro control unit 131 and a lighting unit 132 connected to each other, wherein when the determining unit 122 controls the first control module 130 to be turned on, the micro control unit 131 receives and provides the first test information to the lighting unit 132, and the lighting unit provides the first test signal Vtest1 to the display device 10 according to the first test information.
In the present embodiment, the micro control unit 131 and the lighting unit 132 are connected through a Serial Peripheral Interface (SPI).
The second control module 140 includes: memory cell 141, processing cell 142, programming cell 143, and bridge cell 144. The storage unit 144 stores second test information, the processing unit 142 is connected to the storage unit 141 and the determining unit 122, reads the second test information from the storage unit 141 when the second control module 140 is turned on, and provides a second control signal Vctr2, the programming unit 143 is connected to the processing unit 142, converts the second test information into an intermediate signal Vmid, and the bridging unit 144 is connected to the programming unit 142, the processing unit 142, and the display device 10, and converts the intermediate signal Vmid into a second test signal Vtest2 according to the second control signal Vctr 2. Wherein the intermediate signal Vmid comprises: transistor-transistor logic level signals (TTL), horizontal synchronization signals Hsync, vertical synchronization signals Vsync, and active display data gate signals (DE).
In the present embodiment, the processing unit 142 and the programming unit 143 are connected via a Serial Peripheral Interface (SPI). The storage unit 141 includes, but is not limited to, a Flash memory Flash. The processing unit 142 includes, but is not limited to, an ARM processor. The programming unit 143 includes, but is not limited to, a Field-Programmable Gate Array (FPGA). The bridging unit 144 includes, but is not limited to, a Bridge chip (Bridge IC).
Fig. 3 is a flowchart illustrating an operation of the control terminal according to an embodiment of the present invention. The lighting test method of the present invention will be described in detail with reference to fig. 1 to 3.
The lighting test method starts with the voltage state on the terminal to be detected in the detection port 110. When the voltage status representation port 110 is connected to the control terminal 200, a first test signal is provided to the display device 10 according to first test information provided by the control terminal 200, wherein the control terminal 200 needs to determine whether there is pre-stored first test information, when there is no pre-stored first test information, the corresponding first test information is set and provided according to the type of the display device 10, and when there is pre-stored first test information, the pre-stored first test information is directly provided. Specifically, the process of providing the first test information to the port 110 is completed through steps S01 to S09.
In step S01, the software environment of the control terminal 200 is initialized.
In step S02, it is determined whether or not there is a model document in which the first test information is prestored, and if so, step S03 is executed, and if not, step S04 is executed.
In step S03, the model document is imported into the software environment of the control terminal 200, and step S09 is executed to output the first test information.
In step S04, timing information is set in the software environment of the control terminal 100.
In step S05, the power voltage is set in the software environment of the control terminal 100.
In step S06, screen information is edited in the software environment of the control terminal 100.
In step S07, the model type (the type of the display device 10 to be tested) is determined, and if the model type is the first type, step S09 is performed to output first test information including timing information, power voltage, and picture information through the first transmission signal. Wherein the first transfer signal comprises: Low-Voltage Differential Signaling (LVDS), Embedded DisplayPort (eDP), transistor-transistor logic level (TTL). If the type is the second type, step S08 is executed.
In step S08, the encoding is initialized, and step S09 is executed to output the first test information including the timing information, the power voltage, the picture information and the initialized encoding through a second transfer signal, wherein the second transfer signal includes, but is not limited to, a Mobile Industry Processing Interface (MIPI) signal.
Further, when the voltage status representation port 110 is disconnected from the control terminal 200, a second test signal is provided to the display device 10 according to the pre-stored second test information.
According to the lighting test system of the present embodiment, the lighting (display) status of the display device 10 can be observed in real time by editing the power voltage information, the timing information, the screen information, and the burning initialization code in the software environment of the control terminal 200.
According to the lighting test system of the embodiment, the voltage state on the terminal to be detected in the port 110 is judged through the switching module 120, so as to control the on and off of the first control module 130 and the second control module 140, and accordingly, the display device 10 is provided with the corresponding first test signal and the second test signal, and the lighting test of the display device 10 is performed.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
While embodiments in accordance with the invention have been described above, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A lighting test device for a display device, comprising:
a port for receiving first test information;
the first control module is used for providing a first test signal for the display device according to the first test information;
the second control module is used for providing a second test signal for the display device according to prestored second test information; and
the switching module is connected with the port to detect a voltage state on a terminal to be detected in the port, and when the voltage state represents that the port is in a connection state, the switching module starts the first control module and turns off the second control module, and when the voltage state represents that the port is in a disconnection state, the switching module starts the second control module and turns off the first control module.
2. The lighting test device of claim 1, wherein the switching module includes:
the microprocessor control unit provides a first control signal;
and the judging unit is respectively connected with the port, the first control module and the second control module, and detects the voltage state on the terminal to be detected according to the first control signal so as to control the first control module and the second control module to be turned on and off.
3. The lighting test device of claim 2 wherein the first control module includes a micro-control unit and a lighting unit,
when the judging unit controls the first control module to be started, the micro control unit receives and provides the first test information for the lighting unit, and the lighting unit provides the first test signal for the display device according to the first test information.
4. The lighting test device of claim 2 wherein the second control module comprises:
a storage unit that stores the second test information;
the processing unit reads the second test information from the storage unit when the second control module is started and provides a second control signal;
a programming unit converting the second test information into an intermediate signal; and
and the bridging unit converts the intermediate signal into the second test signal according to the second control signal.
5. The lighting test device according to claim 3, wherein the first test information and the second test information each include at least one of power voltage, picture information, timing information, and code information.
6. The lighting test device of claim 4, wherein the intermediate signals include: a transistor-transistor logic level signal, a horizontal synchronization signal, a vertical synchronization signal, and an active display data strobe signal.
7. A lighting test system for a display device, comprising:
the lighting test device according to any one of claims 1 to 6; and
a control terminal providing the first test information,
when the control terminal is connected to the port, the voltage state is high level,
when the control terminal is disconnected from the port, the voltage state is a low level.
8. The lighting test system of claim 7, wherein the control terminal includes:
the judging module is used for judging whether the pre-stored first test information exists or not;
the information acquisition module is connected with the judgment module, when the first pre-stored test information does not exist, the information acquisition module is arranged according to the type of the display device and provides the corresponding first test information, and when the first pre-stored test information exists, the information acquisition module directly provides the first pre-stored test information.
9. A lighting test method for a display device is characterized by comprising the following steps:
detecting the voltage state on a terminal to be detected in the port;
when the voltage state represents that the port is connected with the control terminal, a first test signal is provided for the display device according to first test information provided by the control terminal, when the voltage state represents that the port is disconnected with the control terminal, a second test signal is provided for the display device according to second pre-stored test information,
the step of controlling the first test information provided by the terminal comprises:
judging whether the first pre-stored test information exists or not; and
and when the pre-stored first test information does not exist, setting and providing the corresponding first test information according to the type of the display device, and when the pre-stored first test information exists, directly providing the pre-stored first test information.
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