CN111613161A - Display data transmission method, display device and storage medium - Google Patents
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Abstract
The invention provides a transmission method of display data, wherein after a handshake between a signal processing module and a display module is successful, the signal processing module transmits the display data to the display module, and if the signal processing module acquires the level state of the display module, the signal processing module determines the display state of the display module according to the level state; if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module so as to reestablish handshake with the display module; and when the handshaking between the signal processing module and the display module is successfully reestablished, the signal processing module transmits the display data to the display module again, so that when the display picture of the display module is abnormal, the abnormal picture of the display module is rapidly repaired by reestablishing the handshaking process between the signal processing module and the display module. The invention provides a display device and a storage medium.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display data transmission method, a display device, and a storage medium.
Background
A display device such as a television or a display is an important component of an electronic device, and some components of the electronic device may cause an abnormality in signal transmission of the display device due to weak interference resistance, and further cause an abnormality in a display screen of the display device. Therefore, the user normally restores the display screen of the display device by restarting the electronic device, which is slow in restoration speed.
Disclosure of Invention
The invention mainly aims to provide a transmission method of display data, a display device and a storage medium, which solve the problem that the repair speed is slow when the display picture of the display device is normally recovered by restarting electronic equipment.
In order to achieve the above object, the present invention provides a method for transmitting display data, the method comprising:
after the handshake between the signal processing module and the display module is successful, the signal processing module transmits display data to the display module;
if the signal processing module acquires the level state of the display module, the signal processing module determines the display state of the display module according to the level state;
if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module so as to reestablish handshake with the display module;
and when the handshaking between the signal processing module and the display module is successfully reestablished, the signal processing module transmits the display data to the display module again.
Optionally, a control signal terminal is arranged on the display module; the step of the signal processing module determining the display state of the display module according to the level state comprises the following steps:
the signal processing module acquires the level state of a control signal end of the display module;
when the level state of the control signal end is a first level state, determining that the display state of the display module is an abnormal state;
and when the level state of the control signal end is a second level state, determining that the display state of the display module is a normal state.
Optionally, if the display state is an abnormal state, the step of sending a handshake test signal to the display module by the signal processing module to reestablish handshake with the display module includes:
if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module, so that after the display module receives the handshake test signal, the level state of the signal control end is set to be a second level state, and the level state of the signal control end is returned to the signal processing module;
and when the signal processing module receives that the level state of the signal control end is the second level state, the signal processing module determines that the handshake with the display module is successful.
Optionally, if the signal processing module obtains the level state of the display module, the step of determining, by the signal processing module, the display state of the display module according to the level state includes:
and if the signal processing module acquires a handshake request sent by the display module, determining the display state of the display module according to the level state of the display module in the handshake request.
Optionally, if the display state is an abnormal state, the step of sending a handshake test signal to the display module by the signal processing module to reestablish handshake with the display module includes:
if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module, so that the display module returns a handshake response signal after receiving the handshake test signal;
and the signal processing module receives a handshake response signal returned by the display module and determines that the handshake with the display module is successful.
Optionally, if the display state is an abnormal state, the step of sending, by the signal processing module, a handshake test signal to the display module includes:
if the display state is an abnormal state, the signal processing module determines the transmission time period of the handshake test signal;
if the transmission time interval is a line-field blanking signal transmission time interval, the signal processing module sends a handshake test signal to the display module in the line-field blanking signal transmission time interval.
In order to achieve the above object, the present invention further provides a method for transmitting display data, wherein the method for transmitting display data comprises the following steps:
after the display module and the signal processing module successfully handshake, the display module receives display data sent by the signal processing module;
if the display module does not receive the display data sent by the signal processing module within a preset time length, the display module sends the level state of the display module to the signal processing module, so that the signal processing module determines the display state of the display module according to the level state, and sends a handshake test signal to the display module to reestablish handshake with the display module when the display state is determined to be an abnormal state;
and when the handshake is reestablished successfully between the display module and the signal processing module, the display module receives the display data sent by the signal processing module again and displays the display data.
Optionally, the display module is provided with a signal control end; the step of sending the level state to the signal processing module so that the level state of the signal processing module determines the display state of the display module includes:
the display module sends the level state of the signal control end to the signal processing module so that the signal processing module determines the display state of the display module according to the level state, wherein when the level state of the control signal end is a first level state, the display state is an abnormal state; and when the level state of the control signal end is a second level state, the display state is a normal state.
Optionally, the step of successful handshake between the display module and the signal processing module includes:
if the display state is an abnormal state, when the display module receives a handshake test signal sent by the signal processing module, the level state of the signal control end of the display module is set to be a second level state, and the level state of the signal control end is returned to the signal processing module, so that when the level state of the signal control end received by the signal processing module is the second level state, the display module is determined to successfully handshake with the display module.
Optionally, the step of sending the level state to the signal processing module, so that the level state of the signal processing module determines the display state of the display module includes:
the display module generates a handshake request according to the level state, wherein the handshake request comprises the level state;
and the display module sends the handshake request to the signal processing module, so that the signal processing module determines the display state of the display module according to the level state contained in the handshake request.
Optionally, the step of successful handshake between the display module and the signal processing module includes:
and when the display module receives the handshake test signal sent by the signal processing module, generating a handshake response signal, and returning the handshake response signal to the signal processing module, so that the signal processing module receives the handshake response signal returned by the display module and determines that the handshake with the display module is successful.
In order to achieve the above object, the present invention further provides a display device, which includes a signal processing module, a display module electrically connected to the signal processing module, a memory, a processor, and a transmission program of display data stored in the memory and executable on the processor, wherein the transmission program of display data implements the steps of the transmission method of display data as described above when executed by the processor.
In order to achieve the above object, the present invention further provides a storage medium having a transmission program of display data stored thereon, wherein the transmission program of display data realizes the steps of the transmission method of display data as described above when executed by a processor.
The invention provides a transmission method of display data, a display device and a storage medium, wherein after a handshake between a signal processing module and a display module is successful, the signal processing module transmits the display data to the display module, and if the signal processing module acquires the level state of the display module, the signal processing module determines the display state of the display module according to the level state; if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module so as to reestablish handshake with the display module; when the handshaking between the signal processing module and the display module is successfully reestablished, the signal processing module transmits the display data to the display module again, so that when the display image of the display module has an abnormal image, the signal processing module transmits the display data to the display module again through reestablishing the handshaking process between the signal processing module and the display module, the display module recovers normal display according to the display data, and the abnormal image of the display module is rapidly repaired.
Drawings
In order to more clearly illustrate the embodiments or exemplary technical solutions of the present invention, the drawings used in the embodiments or exemplary descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flowchart illustrating a first embodiment of a method for transmitting display data according to the present invention;
FIG. 2 is a flowchart illustrating a second embodiment of a method for transmitting display data according to the present invention;
fig. 3 is a schematic structural diagram of a display device according to an embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a display data transmission method.
In an embodiment, the method for transmitting display data is applied to a display device, such as: television, display, etc. The display device comprises a display module and a signal processing module electrically connected with the display module, namely, the display module and the signal processing module can transmit signals, wherein the signals transmitted between the display module and the signal processing module can comprise data signals and control signals. The data signal is used for a signal displayed by the display module, and the control signal is used for monitoring whether handshake communication is realized between the display module and the signal processing module.
Fig. 1 is a flowchart illustrating a first embodiment of a method for transmitting display data according to the present invention. Specifically, the transmission method of the display data includes the following steps:
and S10, after the handshaking between the signal processing module and the display module is successful, the signal processing module transmits display data to the display module.
In this embodiment, the execution main body is a signal processing module. The signal processing module is used for processing display data, wherein the signal processing module can be a time schedule controller and the like; and the display module is used for displaying the display data processed by the signal processing module, wherein the display module can be a display screen and the like. It is understood that the display data is data that can be used for converting into a frame, wherein the display data includes, but is not limited to, a line start data signal, an active data control signal, an active pixel data signal, and a line end data information, and is not limited herein.
Further, the handshake between the signal processing module and the display module is successful, that is, the transmission of the display data can be performed between the signal processing module and the display module, and at this time, the signal processing module transmits the processed display data to the display module, so that the display data is displayed through the display module.
Further, before the handshake between the signal processing module and the display module is successful, the transmission method of the display data further includes a step of establishing handshake between the signal processing module and the display module, specifically: and electrifying the signal processing module and the display module to operate, and switching the level state of the control signal end by the display module, wherein the initial level state of the control signal is high level. Before the handshake process is established, the level state of the control signal is switched from an initial high level to a low level, and when the control signal is at the low level, the signal processing module may send a handshake test signal to the display module.
And S20, if the signal processing module acquires the level state of the display module, the signal processing module determines the display state of the display module according to the level state.
Further, since the display module is easily interfered by external signals, that is, after the handshake between the signal processing module and the display module is successful, the display module may not receive the display data transmitted by the signal processing module, for example: when the display module does not receive the display data or the received display data contains other interference signals, the display module may have a phenomenon of no display picture or screen blooming. In this embodiment, if the display module does not receive the display data transmitted by the signal processing module within the preset time period, the display module sends the level state of the display module to the signal processing module, that is, the signal processing module can obtain the level state of the display module, and determine the display state of the display module according to the level state. The preset time length is a time length between the last time that the display module receives the display data transmitted by the signal processing module and the current time that the display module receives the display data transmitted by the signal processing module, and the specific value may be set according to a requirement, which is not limited herein.
Specifically, the display module is provided with a control signal end, that is, when the signal processing module obtains the level state of the display module, the signal processing module obtains the level state of the control signal end of the display module. In this embodiment, if the level state of the control signal terminal is the first level state, the signal processing module determines that the display state of the display module is an abnormal state; and if the level state of the control signal end is a second level state, the signal processing module determines that the display state of the display module is a normal state.
It can be understood that the first level state is a low level, which indicates that the display module does not receive the display data transmitted by the signal processing module within a preset time period, and at this time, a display picture of the display module is abnormal; the second level state is a high level, which indicates that the display module can receive the display data transmitted by the signal processing module within a preset time period, and at this time, the display frame of the display module is displayed normally.
And S30, if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module to reestablish handshake with the display module.
Further, when the display image of the display module is abnormal, the signal processing module re-establishes handshaking with the display module, so that the signal processing module and the display module re-transmit display data. After the signal processing module determines the display state of the display module according to the level state, if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module to reestablish handshake with the display module, and after the handshake is successfully reestablished between the signal processing module and the display module, the signal processing module retransmits the display data to the display module so that the display module displays according to the received display data again.
Specifically, when the display module cannot receive display data transmitted by the signal processing module due to interference of an external signal, that is, when a display picture of the display module is abnormal, the display module pulls down a level state of the control signal terminal, and at this time, when the signal processing module obtains that the level state is a low level, the signal processing module reestablishes a handshake process with the display module, that is, the signal processing module sends a handshake test signal to the display module to reestablish handshake with the display module, so that the display picture of the display module is restored again, and the repair speed of the abnormal picture is accelerated.
It is understood that when the signal processing module transmits any at least one of the line start data signal, the valid data control signal, the valid pixel data signal, and the line end data information, the signal processing module reestablishes the handshake process between the signal processing module and the display module as long as the signal processing module obtains that the level state is the low level.
Further, if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module, so that after the display module receives the handshake test signal, the level state of the signal control terminal is set to be a second level state, and the level state of the signal control terminal is returned to the signal processing module; and when the signal processing module receives that the level state of the signal control end is the second level state, the signal processing module determines that the handshake with the display module is successful.
Specifically, since the second level state in this embodiment is a high level, that is, when the level state of the control signal terminal received by the signal processing module is a high level, the signal processing module determines that the handshake with the display module is successful. However, if the display module cannot receive the handshake test signal due to external signal interference, the level state of the control signal end is maintained in the first level state and is sent to the signal processing module, at this time, the first level state of the control signal end received by the signal processing module determines that the handshake with the display module fails, at this time, the signal processing module needs to send the handshake test signal to the display module again and reacquire the level state of the control signal end until the signal processing module receives that the level state is the second level state, and determines that the handshake with the display module succeeds.
Further, in this embodiment, when the signal processing module sends a handshake test signal to the display module, the signal processing module and the display module need to be powered on, and when the signal processing module and the display module are powered on, the level state of the control signal end is controlled to be switched to a low level state, so that the signal processing module sends the handshake test signal to the display module, and after the handshake test signal is sent, whether handshake with the display module is successfully established is determined by obtaining the level state of the control signal end, for example, when the display module receives the handshake test signal, the level state of the control signal end is set to a second level state, that is, a high level, and at this time, it is determined that handshake with the display module is successfully established; when the display module does not receive the handshake test signal, the level state of the control signal end maintains a first level state, namely a low level, and at the moment, it is determined that handshake with the display module fails.
Further, when the signal processing module obtains the level state of the display module and determines the display state of the display module according to the level state, the signal processing module may obtain a handshake request sent by the display module, where the handshake request includes the level state of the display module, that is, the signal processing module may determine the display state of the display module according to the level state of the display module in the handshake request.
Specifically, if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module, so that the display module returns a handshake response signal to the signal processing module after receiving the handshake test signal, so that the signal processing module receives the handshake response signal returned by the display module and determines that the handshake with the display module is successful.
Further, in this embodiment, when the level state of the control signal terminal is the first level state, that is, the display state is the abnormal state, the signal processing module determines the transmission period of the handshake test signal, and if the transmission period is the line-field blanking signal transmission period, the signal processing module sends the handshake test signal to the display module in the line-field blanking signal transmission period. Wherein the line-to-field blanking signal transmission period comprises a line-to-field blanking signal transmission period and a field blanking signal transmission period.
Specifically, the display data received by the display module includes a field signal and a line signal, the field signal is divided into a field blanking signal and a field valid signal, and the line signal is divided into a line blanking signal and a line valid signal. For example, the resolution of the display device is 3840 × 2160, where "3840" and "2160" are the magnitudes of the line valid signal and the field valid signal, respectively, and generally, the resolution of the original signal corresponding to 3840 × 2160 resolution is 4400 × 2250, and "560 (4400-. In this embodiment, when the display module does not receive the display data within a preset time period, that is, when the level state of the control signal is the first level state, the signal processing module reestablishes the handshake with the display module within the transmission period of each line blanking signal or each field blanking signal.
And S40, when the handshake between the signal processing module and the display module is successfully reestablished, the signal processing module retransmits the display data to the display module.
Further, handshake is reestablished between the signal processing module and the display module, and after the handshake is successful, the signal processing module may transmit display data to the display module again, and at this time, when the level state of the control signal end acquired by the signal processing module is a second level state, that is, a high level, the signal processing module may continue to transmit display data of a next frame to the display module; if the level state of the control signal end acquired by the signal processing module is the first level state, that is, the display state is an abnormal state, the method returns to the step 30, that is, the signal processing module sends a handshake test signal to the display module to reestablish handshake with the display module.
In the embodiment of the invention, after the handshake between the signal processing module and the display module is successful, the signal processing module transmits display data to the display module, and if the signal processing module acquires the level state of the display module, the signal processing module determines the display state of the display module according to the level state; if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module so as to reestablish handshake with the display module; when the handshaking between the signal processing module and the display module is successfully reestablished, the signal processing module transmits the display data to the display module again, so that when the display image of the display module has an abnormal image, the signal processing module transmits the display data to the display module again through reestablishing the handshaking process between the signal processing module and the display module, the display module recovers normal display according to the display data, and the abnormal image of the display module is rapidly repaired.
In another embodiment, the method for transmitting display data is applied to a display device, such as: television, display, etc. The display device comprises a display module and a signal processing module electrically connected with the display module, namely, the display module and the signal processing module can transmit signals, wherein the signals transmitted between the display module and the signal processing module can comprise data signals and control signals. The data signal is used for a signal displayed by the display module, and the control signal is used for monitoring whether handshake communication is realized between the display module and the signal processing module.
Fig. 2 is a flowchart illustrating steps of a second embodiment of a method for transmitting display data according to the present invention. Specifically, the transmission method of the display data includes the following steps:
and S50, after the handshake between the display module and the signal processing module is successful, the display module receives the display data sent by the signal processing module.
In this embodiment, the execution main body is a display module. The display module is used for displaying the display data processed by the signal processing module, wherein the display module can be a display screen and the like; and the signal processing module is used for processing the display data, wherein the signal processing module can be a time schedule controller and the like. It is understood that the display data is data that can be used for converting into a frame, wherein the display data includes, but is not limited to, a line start data signal, an active data control signal, an active pixel data signal, and a line end data information, and is not limited herein.
Further, the handshake between the display module and the signal processing module is successful, that is, the display module and the signal processing module can transmit display data, and at this time, the display module can receive the display data sent by the signal processing module and display the display data after receiving the display data.
Specifically, before the handshake between the display module and the signal processing module is successful, the method for transmitting display data further includes a step of establishing handshake between the display module and the signal processing module, and after the signal processing module and the display module are powered on and operate, the display module switches a level state of a control signal at the control signal end, where an initial level state of the control signal is a high level. Before a handshake process is established, the level state of the control signal is switched from an initial high level to a low level, and when the control signal is at the low level, the signal processing module sends a handshake test signal to the display module, at this time, if the display module receives the handshake test signal, the level state of the control signal is switched from the low level to the high level and is fed back to the signal processing module, and when the signal processing module monitors that the level state of the control signal is at the high level, it is determined that handshake between the signal processing module and the display module is successful.
And S60, if the display module does not receive the display data sent by the signal processing module within a preset time length, the display module sends the level state of the display module to the signal processing module, so that the signal processing module determines the display state of the display module according to the level state, and sends a handshake test signal to the display module to reestablish handshake with the display module when the display state is determined to be an abnormal state.
Further, after the handshake between the signal processing module and the display module is successful, the display module may not receive the display data transmitted by the signal processing module due to the fact that the display module is easily interfered by an external signal, for example: when the display module does not receive the display data or the received display data contains other interference signals, the display module may have a phenomenon of no display picture or screen blooming. In this embodiment, if the display module does not receive the display data transmitted by the signal processing module within the preset time period, the display module sends the level state of the display module to the signal processing module, so that the signal processing module can obtain the level state of the display module, and determine the display state of the display module according to the level state. The preset time length is a time length between the last time that the display module receives the display data transmitted by the signal processing module and the current time that the display module receives the display data transmitted by the signal processing module, and the specific value may be set according to specific requirements, which is not limited herein.
Specifically, when the signal processing module obtains the level state of the display module, since the display module is provided with a control signal end, at this time, the display module sends the level state of the signal control end to the signal processing module, so that the signal processing module determines the display state of the display module according to the level state. In this embodiment, if the level state of the control signal terminal is the first level state, the signal processing module determines that the display state of the display module is an abnormal state; and if the level state of the control signal end is a second level state, the signal processing module determines that the display state of the display module is a normal state.
It can be understood that the first level state is a low level, which indicates that the display module does not receive the display data transmitted by the signal processing module within a preset time period, and at this time, a display picture of the display module is abnormal; the first level state is a high level, which indicates that the display module receives the display data transmitted by the signal processing module within a preset time period, and at this time, the display frame of the display module is displayed normally.
Further, when the display image of the display module is abnormal, handshake is reestablished between the signal processing module and the display module, so that transmission of display data is resumed between the signal processing module and the display module. After the signal processing module determines the display state of the display module according to the level state, if the display state is an abnormal state, a handshake test signal is sent to the display module to reestablish handshake with the display module.
Specifically, when the display module cannot receive display data transmitted by the signal processing module due to interference of an external signal, that is, when a display picture of the display module is abnormal, the display module pulls down a level state of the control signal terminal, and at this time, when the signal processing module obtains that the level state is a low level, the signal processing module reestablishes a handshake process with the display module, that is, the signal processing module sends a handshake test signal to the display module to reestablish handshake with the display module, so that the display picture of the display module is restored again, and the repair speed of the abnormal picture is accelerated.
Specifically, when the display module cannot receive display data transmitted by the signal processing module due to interference of an external signal, that is, when a display picture of the display module is abnormal, the display module pulls down a level state of the control signal terminal, and at this time, when the signal processing module acquires that the level state is a low level, the signal processing module reestablishes a handshake process with the display module, that is, the signal processing module sends a handshake test signal to the display module to reestablish handshake with the display module.
It is understood that when the signal processing module transmits any one of the line start data signal, the valid data control signal, the valid pixel data signal and the line end data information, the handshake between the signal processing module and the display module is established again as long as the level state is a low level.
Further, if the display state is an abnormal state, when the display module receives the handshake test signal sent by the signal processing module, the display module sets the level state of the signal control end of the display module to a second level state, and returns the level state of the signal control end to the signal processing module, so that when the signal processing module receives that the level state of the signal control end is the second level state, it is determined that the handshake with the display module is successful.
Specifically, since the second level state in this embodiment is a high level, that is, when the level state of the control signal terminal received by the signal processing module is a high level, the signal processing module determines that the handshake with the display module is successful. However, if the display module cannot receive the handshake test signal due to external signal interference, the level state of the control signal end is maintained in the first level state and is sent to the signal processing module, at this time, the first level state of the control signal end received by the signal processing module determines that the handshake with the display module fails, at this time, the signal processing module needs to send the handshake test signal to the display module again and reacquire the level state of the control signal end until the signal processing module receives that the level state is the second level state, and determines that the handshake with the display module succeeds.
Further, in this embodiment, when the signal processing module sends a handshake test signal to the display module, the signal processing module and the display module need to be powered on, and when the signal processing module and the display module are powered on, the level state of the control signal end is controlled to be switched to a low level state, so that the signal processing module sends the handshake test signal to the display module, and after the handshake test signal is sent, whether handshake with the display module is successfully established is determined by obtaining the level state of the control signal end, for example, when the display module receives the handshake test signal, the level state of the control signal end is set to a second level state, that is, a high level, and at this time, it is determined that handshake with the display module is successfully established; when the display module does not receive the handshake test signal, the level state of the control signal end maintains a first level state, namely a low level, and at the moment, it is determined that handshake with the display module fails.
Further, when the display module sends a level state to the signal processing module, the display module generates a handshake request according to the level state, wherein the handshake request includes the level state; and the display module sends the handshake request to the signal processing module, so that the signal processing module determines the display state of the display module according to the level state contained in the handshake request.
Specifically, if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module, and when the display module receives the handshake test signal sent by the signal processing module, a handshake response signal is generated and returned to the signal processing module, so that the signal processing module receives the handshake response signal returned by the display module and determines that the handshake with the display module is successful.
Further, in this embodiment, when the level state of the control signal terminal is the first level state, that is, the display state is the abnormal state, the signal processing module determines the transmission period of the handshake test signal, and if the transmission period is the line-field blanking signal transmission period, the signal processing module sends the handshake test signal to the display module in the line-field blanking signal transmission period. Wherein the line-to-field blanking signal transmission period comprises a line-to-field blanking signal transmission period and a field blanking signal transmission period.
Specifically, the display data received by the display module includes a field signal and a line signal, the field signal is divided into a field blanking signal and a field valid signal, and the line signal is divided into a line blanking signal and a line valid signal. For example, the resolution of the display device is 3840 × 2160, where "3840" and "2160" are the magnitudes of the line valid signal and the field valid signal, respectively, and generally, the resolution of the original signal corresponding to 3840 × 2160 resolution is 4400 × 2250, and "560 (4400-. In this embodiment, the display module does not receive display data within a preset time period, that is, when the level state of the control signal is the first level state, the signal processing module reestablishes a handshake with the display module within the transmission period of each line blanking signal or field blanking signal, so as to achieve automatic recovery of an abnormal picture of the display device, and avoid a situation that when the display device is abnormal due to external interference, the display device needs to be powered off and restarted, which results in slow recovery of the abnormal picture of the display device.
And S70, when the handshake between the display module and the signal processing module is successfully reestablished, the display module receives the display data sent by the signal processing module again and displays the display data.
Further, handshake is reestablished between the display module and the signal processing module, and after the handshake is successful, the display module receives the display data sent by the signal processing module again, at this time, the display module sets the level state of the control signal end to be a second level state and returns to the signal processing module, so that the signal processing module can continue to transmit the display data of the next frame to the display module; if the display module does not receive the display data sent by the signal processing module within the preset time length, that is, the level state of the control signal end is maintained at the first level state, at this time, the step returns to the step of executing S50, that is, the signal processing module determines the display state of the display module according to the level state, and sends a handshake test signal to the display module to reestablish handshake with the display module when the display state is determined to be an abnormal state.
In the embodiment of the invention, after the handshake between the display module and the signal processing module is successful, the display module receives the display data sent by the signal processing module, if the display module does not receive the display data sent by the signal processing module within a preset time length, the display module sends the level state of the display module to the signal processing module, so that the signal processing module determines the display state of the display module according to the level state, and sends a handshake test signal to the display module to reestablish handshake with the display module when the display state is determined to be an abnormal state, and after the handshake between the display module and the signal processing module is successful, the display module receives the display data sent by the signal processing module again and displays the display data to be in the abnormal state, namely, when the display image of the display module has an abnormal image, the display module re-receives the display data sent by the signal processing module by re-establishing the handshaking process between the signal processing module and the display module, so that the display module recovers normal display according to the display data, and the abnormal image of the display module is quickly repaired.
Based on the two embodiments, the present invention further provides a display device, where the display device includes a signal processing module, a display module electrically connected to the signal processing module, a memory, a processor, and a transmission program of display data stored in the memory and executable on the processor, where the transmission program of display data is executed by the processor to implement the step of the transmission method of display data according to the first embodiment; alternatively, the transmission program of the display data implements the steps of the transmission method of the display data according to the second embodiment when executed by the processor.
As shown in fig. 3, the display module and the signal processing module communicate with each other through a display data line a and a signal transmission line B, where the display data line a is used for the signal processing module to transmit display data to the display module, and the display data includes, but is not limited to, a line start data signal, an effective data control signal, an effective pixel data signal, and line end data information; the signal transmission line B is used for the signal processing module to send a signal to the display module, that is, the signal processing module sends a generated handshake test signal to the display module; if the signal processing module is used for generating a control signal, the signal transmission line B is further used for the signal processing module to send the generated control signal to the display module, and the display module returns the level state of the control signal to the signal processing module.
Based on the two embodiments, the present invention further provides a storage medium, where a transmission program of display data is stored, and the transmission program of display data is executed by a processor to implement the steps of the transmission method of display data according to the two embodiments.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be substantially or partially embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk), and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a cloud server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
It should be noted that, in this document, 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 like elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (13)
1. A method for transmitting display data, the method comprising:
after the handshake between the signal processing module and the display module is successful, the signal processing module transmits display data to the display module;
if the signal processing module acquires the level state of the display module, the signal processing module determines the display state of the display module according to the level state;
if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module so as to reestablish handshake with the display module;
and when the handshaking between the signal processing module and the display module is successfully reestablished, the signal processing module transmits the display data to the display module again.
2. The transmission method of display data according to claim 1, wherein a control signal terminal is provided on the display module; the step of the signal processing module determining the display state of the display module according to the level state comprises the following steps:
the signal processing module acquires the level state of a control signal end of the display module;
when the level state of the control signal end is a first level state, determining that the display state of the display module is an abnormal state;
and when the level state of the control signal end is a second level state, determining that the display state of the display module is a normal state.
3. The method according to claim 2, wherein if the display status is abnormal, the step of sending a handshake test signal to the display module by the signal processing module to reestablish handshake with the display module comprises:
if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module, so that after the display module receives the handshake test signal, the level state of the signal control end is set to be a second level state, and the level state of the signal control end is returned to the signal processing module;
and when the signal processing module receives that the level state of the signal control end is the second level state, the signal processing module determines that the handshake with the display module is successful.
4. The method according to claim 1, wherein if the signal processing module obtains the level state of the display module, the step of the signal processing module determining the display state of the display module according to the level state comprises:
and if the signal processing module acquires a handshake request sent by the display module, determining the display state of the display module according to the level state of the display module in the handshake request.
5. The method according to claim 4, wherein if the display status is abnormal, the step of sending a handshake test signal to the display module by the signal processing module to reestablish handshake with the display module comprises:
if the display state is an abnormal state, the signal processing module sends a handshake test signal to the display module, so that the display module returns a handshake response signal after receiving the handshake test signal;
and the signal processing module receives a handshake response signal returned by the display module and determines that the handshake with the display module is successful.
6. The method according to claim 3 or 5, wherein the step of sending a handshake test signal to the display module by the signal processing module if the display status is abnormal includes:
if the display state is an abnormal state, the signal processing module determines the transmission time period of the handshake test signal;
if the transmission time interval is a line-field blanking signal transmission time interval, the signal processing module sends a handshake test signal to the display module in the line-field blanking signal transmission time interval.
7. A transmission method of display data is characterized by comprising the following steps:
after the display module and the signal processing module successfully handshake, the display module receives display data sent by the signal processing module;
if the display module does not receive the display data sent by the signal processing module within a preset time length, the display module sends the level state of the display module to the signal processing module, so that the signal processing module determines the display state of the display module according to the level state, and sends a handshake test signal to the display module to reestablish handshake with the display module when the display state is determined to be an abnormal state;
and when the handshake is reestablished successfully between the display module and the signal processing module, the display module receives the display data sent by the signal processing module again and displays the display data.
8. The transmission method of display data according to claim 7, wherein the display module is provided with a signal control terminal; the step of sending the level state to the signal processing module so that the level state of the signal processing module determines the display state of the display module includes:
the display module sends the level state of the signal control end to the signal processing module so that the signal processing module determines the display state of the display module according to the level state, wherein when the level state of the control signal end is a first level state, the display state is an abnormal state; and when the level state of the control signal end is a second level state, the display state is a normal state.
9. The method for transmitting display data according to claim 8, wherein the successful handshake between the display module and the signal processing module comprises:
if the display state is an abnormal state, when the display module receives a handshake test signal sent by the signal processing module, the level state of the signal control end of the display module is set to be a second level state, and the level state of the signal control end is returned to the signal processing module, so that when the level state of the signal control end received by the signal processing module is the second level state, the display module is determined to successfully handshake with the display module.
10. The method as claimed in claim 7, wherein the step of the display module sending its level status to the signal processing module, so that the signal processing module determines the display status of the display module according to the level status comprises:
the display module generates a handshake request according to the level state, wherein the handshake request comprises the level state;
and the display module sends the handshake request to the signal processing module, so that the signal processing module determines the display state of the display module according to the level state contained in the handshake request.
11. The method for transmitting display data according to claim 10, wherein the successful handshake between the display module and the signal processing module comprises:
and when the display module receives the handshake test signal sent by the signal processing module, generating a handshake response signal, and returning the handshake response signal to the signal processing module, so that the signal processing module receives the handshake response signal returned by the display module and determines that the handshake with the display module is successful.
12. A display device, comprising a signal processing module, a display module electrically connected to the signal processing module, a memory, a processor, and a transmission program of display data stored in the memory and executable on the processor, wherein the transmission program of display data implements the steps of the transmission method of display data according to any one of claims 1 to 6 when executed by the processor; alternatively, the transmission program of the display data implements the steps of the transmission method of the display data according to any one of claims 7 to 11 when executed by the processor.
13. A storage medium having stored thereon a transmission program of display data, the transmission program of display data realizing the steps of the transmission method of display data according to any one of claims 1 to 11 when executed by a processor.
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| CN202010427852.4A CN111613161A (en) | 2020-05-19 | 2020-05-19 | Display data transmission method, display device and storage medium |
| PCT/CN2021/075331 WO2021232858A1 (en) | 2020-05-19 | 2021-02-04 | Display data transmission method, display device and nonvolatile storage medium |
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| CN202010427852.4A CN111613161A (en) | 2020-05-19 | 2020-05-19 | Display data transmission method, display device and storage medium |
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