CN111292669B - Display device and communication method thereof - Google Patents
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Abstract
The application provides a display device and a communication method thereof. The communication method of the display device comprises the following steps: a timing controller controlling the target panel receives a source signal of the target panel to output the target signal to a source driver of the target panel; controlling a source driver of a target panel to receive a target signal to determine whether the target signal is abnormal; when the target signal accords with the communication protocol, the target signal is normal, and the time schedule controller continuously outputs the target signal to the source driver; otherwise, the target signal is abnormal, the time schedule controller stops outputting the target signal to the source driver, and the source driver transmits a connection state signal corresponding to the target signal in the abnormal state to the time schedule controller so as to obtain the reason of the target signal abnormality. According to the method and the device, when the target signals are abnormal, the source driver transmits the connection state signals corresponding to the target signals in the abnormal state to the time schedule controller so as to obtain the reason of the target signals, and the display device is convenient to improve the reason of the target signals.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a display device and a communication method thereof.
Background
As the quality requirements of people for display devices are higher and higher, the development of display devices is diversified, and how to reduce the occurrence of abnormalities of display devices is a major development direction.
In the conventional display device, when a clock data recovery failure or other signal abnormality occurs, the source driver is generally defaulted to that the phase-locked loop is unlocked, and the output connection state signal is directly switched to a low level signal. The reason why the abnormality occurs in particular cannot be known, resulting in a limitation in improvement of the abnormality occurring to the display device.
Therefore, a new display device and a communication method thereof are needed to solve the above technical problems.
Disclosure of Invention
The application provides a display device and a communication method thereof, which are used for solving the problem that when the existing display device is abnormal, a timing controller transmits signals to a source driver, specific abnormal reasons cannot be known, and the improvement of the existing display device for the abnormity is limited.
In order to solve the technical problem, the technical scheme provided by the application is as follows:
the application provides a communication method of a display device, which comprises the steps that a time schedule controller for controlling a target panel receives a source signal of the target panel so as to output the target signal to a source driver of the target panel;
controlling a source driver of the target panel to receive the target signal to determine whether the target signal is abnormal;
when the target signal accords with a communication protocol, the target signal is normal, and the time schedule controller continuously outputs the target signal to the source driver; otherwise, the target signal is abnormal, the time schedule controller stops outputting the target signal to the source driver, and the source driver transmits a connection state signal corresponding to the target signal in an abnormal state to the time schedule controller so as to acquire the reason of the target signal abnormality.
In the communication method of the display device provided by the present application, the controlling a timing controller of a target panel to receive a source signal of the target panel and output the target signal to a source driver of the target panel includes:
the time sequence controller for controlling the target panel receives a source signal of the target panel to obtain the target signal;
and the time schedule controller transmits the target signal to a source driver through the communication protocol.
In the communication method of the display device provided by the present application, when the target signal conforms to a communication protocol, the target signal is normal, and the continuously outputting the target signal to the source driver by the timing controller includes:
the source driver continuously maintains the output connection state signal as a high level signal;
the time schedule controller receives the high level signal that the connection state signal is continuous;
the timing controller continuously outputs the target signal to the source driver.
In the communication method of the display device provided by the present application, when the target signal is abnormal, the timing controller stops outputting the target signal to the source driver, and the source driver transmits a connection state signal corresponding to the target signal in an abnormal state to the timing controller, so as to obtain the reason for the abnormality of the target signal, including:
the source driver acquires the reason of the target signal abnormity according to the communication protocol;
the source driver encodes the connection state signal according to the reason of the target signal abnormity;
the source driver transmits the encoded connection state signal to the timing controller;
the time sequence controller receives the connection state signal coded by the source driver;
the timing controller stops outputting the target signal to the source driver;
the timing controller decodes the connection state signal encoded by the source driver to acquire a cause of the target signal abnormality.
In the communication method of the display device provided by the present application, the encoding, by the source driver, the connection status signal according to the reason for the abnormality of the target signal includes:
the source driver switches the output connection state signal into a low level signal;
the source driver generates a corresponding high level signal and a corresponding low level signal in the connection state signals output within the time T according to the reason of the target signal abnormity;
wherein the time T is less than or equal to a duration of one horizontal blanking.
The application also provides a display device, which comprises a time schedule controller and a source driver;
the time schedule controller comprises a first output module for receiving a source signal of a target panel to output a target signal to a source driver of the target panel, and a first judging module for judging whether the target signal is normal or not according to a connection state signal output by the source driver;
the source driver comprises a second receiving module for receiving the target signal, a second judging module for judging whether the target signal is normal according to a communication protocol and acquiring the reason of the target signal abnormality in an abnormal state, and a second output module for outputting the corresponding connection state signal to the time schedule controller according to whether the target signal is normal or not;
when the target signal is normal, the second output module of the source driver outputs the connection state signal corresponding to the target signal in a normal state to the timing controller, the first determination module of the timing controller determines that the target signal is normal according to the connection state signal, and the first output module of the timing controller continuously outputs the target signal to the source driver;
when the target signal is abnormal, the second output module of the source driver outputs the connection state signal corresponding to the target signal in an abnormal state to the timing controller, the first determination module of the timing controller determines the target signal to be abnormal according to the connection state signal and acquires the reason of the target signal abnormality according to the connection state signal, and the first output module of the timing controller stops outputting the target signal to the source driver.
In the display device provided by the application, the first output module comprises a first receiving unit, a first obtaining unit and a first output unit;
the first receiving unit is used for receiving the source signal of the target panel;
the first acquisition unit is used for acquiring the target signal according to the source signal;
the first output unit is used for outputting the target signal to the source driver of the target panel.
In the display device provided by the application, the first judging module comprises a second receiving unit, a first judging unit and a first control unit;
the second receiving unit is configured to receive the connection status signal output by the second output module of the source driver;
the first determination unit is configured to determine whether the target signal is normal according to whether the connection state signal received by the second receiving unit is normal, and decode the connection state signal corresponding to the target signal in an abnormal state to obtain a reason why the target signal is abnormal;
the first control unit controls whether the first output module outputs the target signal to the source driver according to the determination result of the first determination unit;
when the first sub-determination unit determines that the target signal is normal, the first control unit controls the first output module to continuously output the target signal to the source driver;
when the first sub-determination unit determines that the target signal is normal, the first control unit controls the first output module to stop outputting the target signal to the source driver.
In the display device provided by the application, the first judging unit comprises a first sub-judging unit and a first sub-decoding unit;
the first sub-determination unit is used for determining whether the target signal is normal according to whether the connection state signal output by the second output module of the source driver is normal;
the first sub-decoding unit is configured to decode the connection state signal corresponding to the target signal in an abnormal state to obtain a cause of the target signal abnormality.
In the display device provided by the application, the second output module comprises a first encoding unit and a second output unit;
the first coding unit is used for coding the connection state signal according to the reason of the target signal abnormity when the second judging module judges that the target signal is abnormal;
the second output unit is configured to output the connection state signal corresponding to the target signal to the timing controller according to a result of the second determination module determining whether the target signal is normal.
Has the advantages that: according to the method and the device, when the target signals are abnormal, the source driver transmits the connection state signals corresponding to the target signals in the abnormal state to the time schedule controller so as to obtain the reason of the target signals, and the display device is convenient to improve the reason of the target signals.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a communication method of a display device according to the present application.
Fig. 2 is a first structural diagram of a display device according to the present application.
Fig. 3 is a second structural diagram of the display device of the present application.
Fig. 4 is a schematic structural diagram of a timing controller of the display device of the present application.
Fig. 5 is a schematic structural diagram of a first determination module of the display device of the present application.
Fig. 6 is a schematic structural diagram of a source driver of a display device according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The existing display device has the problem that the specific reason of the abnormity can not be known when the time schedule controller transmits the signal to the source driver, thereby limiting the improvement of the existing display device for the abnormity. Based on this, the application provides a display device and a communication method thereof.
Referring to fig. 1, the communication method of the display device includes:
s1, a time schedule controller for controlling a target panel receives a source signal of the target panel so as to output the target signal to a source driver of the target panel.
In this embodiment, step S1 specifically includes:
s11, the time sequence controller for controlling the target panel receives the source signal of the target panel to obtain the target signal.
And S12, the time schedule controller transmits the target signal to a source driver through a communication protocol.
In this embodiment, the communication protocol is a preset communication rule between the timing controller and the source driver.
And S2, controlling a source driver of the target panel to receive the target signal so as to judge whether the target signal is abnormal or not.
In this embodiment, step S2 includes:
s21, the source driver receives the target signal;
s22, the source driver judges whether the target signal is abnormal or not according to the communication protocol.
And S3, when the target signal conforms to the communication protocol, the target signal is normal, and the time schedule controller continuously outputs the target signal to the source driver.
In this embodiment, step S3 includes:
and S31, the source driver continuously maintains the output connection state signal as a high-level signal.
And S32, the time schedule controller receives the high-level signal that the connection state signal is continuous.
And S33, the time schedule controller continuously outputs the target signal to the source driver.
And S4, when the target signal is not in accordance with the communication protocol, the target signal is abnormal, the time schedule controller stops outputting the target signal to the source driver, and the source driver transmits a connection state signal corresponding to the target signal in an abnormal state to the time schedule controller so as to acquire the reason of the target signal abnormality.
In this embodiment, step S4 includes:
and S41, the source driver acquires the reason of the target signal abnormality according to the communication protocol.
And S42, the source driver encodes the connection state signal according to the reason of the target signal abnormity.
In this embodiment, step S42 includes:
and S421, the source driver switches the output connection state signal into a low-level signal.
And S422, the source driver generates a corresponding high-level signal and a corresponding low-level signal in the connection state signals output within the time T according to the reason of the target signal abnormality.
Wherein the time T is less than or equal to the duration of one horizontal blanking.
And S43, transmitting the encoded connection state signal to the time schedule controller by the source driver.
And S44, the time schedule controller receives the connection state signal coded by the source driver.
And S45, the time schedule controller stops outputting the target signal to the source driver.
S46, the time sequence controller decodes the connection state signals coded by the source driver to acquire the reason of the target signal abnormity.
In this embodiment, step S46 includes:
s461, the timing controller obtains the reason of the target signal abnormality according to the high level signal and the low level signal corresponding to the connection state signal received in time T.
In this embodiment, the reasons for the target signal abnormality include, but are not limited to, a clock data recovery failure, a communication protocol vertical blanking error, a communication protocol horizontal blanking error, and a communication command error.
In this embodiment, the reason for the abnormality of the target signal may be expressed by rising and falling edges generated by the high level and low level signals in the connection state signal received by the timing controller within time T.
For example, when the target signal fails to recover the clock data, the connection state signal output by the source driver is kept at a low level signal for a time T, that is, 0 rising edge and 0 falling edge are generated in the connection state signal for the time T.
When the destination signal has a vertical protocol blanking error, the connection state signal output by the source driver is first kept as a low level signal, then 1 high level signal is generated, and finally the connection state signal is reverted to a low level signal, that is, 1 rising edge and 1 falling edge are generated in the connection state signal in the time T.
When the destination signal generates a protocol level concealment error, the connection state signal output by the source driver generates 2 discontinuous high level signals in a low level signal within time T, i.e., 2 rising edges and 2 falling edges in the connection state signal within time T.
When the communication command error occurs in the target signal, the connection state signal output by the source driver generates 3 discontinuous high level signals in the low level signal within time T, i.e. generates 3 rising edges and 3 falling edges in the connection state signal within time T.
According to the method and the device, when the target signal is abnormal, the source driver transmits the connection state signal corresponding to the target signal in the abnormal state to the time schedule controller so as to obtain the reason of the target signal abnormality, and the display device is convenient to improve aiming at the reason of the target signal abnormality.
Referring to fig. 2 to fig. 6, the present application further provides a display device 100, where the display device 100 includes: a timing controller 10, and a source driver 20.
The timing controller 10 includes a first output module 11 for receiving a source signal of a target panel to output a target signal to the source driver 20 of the target panel, and a first determination module 12 for determining whether the target signal is normal according to a connection state signal output from the source driver 20.
The source driver 20 includes a second receiving module 21 for receiving the target signal, a second determining module 22 for determining whether the target signal is normal according to a communication protocol and obtaining a reason why the target signal is abnormal in an abnormal state, and a second outputting module 23 for outputting the corresponding connection state signal to the timing controller 10 according to whether the target signal is normal.
When the target signal is normal, the second output module 23 of the source driver 20 outputs the connection state signal corresponding to the target signal in a normal state to the timing controller 10, the first determination module 12 of the timing controller 10 determines that the target signal is normal according to the connection state signal, and the first output module 11 of the timing controller 10 continuously outputs the target signal to the source driver 20.
When the target signal is abnormal, the second output module 23 of the source driver 20 outputs the connection state signal corresponding to the target signal in an abnormal state to the timing controller 10, the first determination module 12 of the timing controller 10 determines that the target signal is abnormal according to the connection state signal and acquires the cause of the abnormality of the target signal according to the connection state signal, and the first output module 11 of the timing controller 10 stops outputting the target signal to the source driver 20.
Referring to fig. 4, in the display device 100 of the present application, the first output module 11 includes a first receiving unit 111, a first obtaining unit 112, and a first output unit 113.
The first receiving unit 111 is used for receiving the source signal of the target panel.
The first obtaining unit 112 is configured to obtain the target signal according to the source signal.
The first output unit 113 is configured to output the target signal to the source driver 20 of the target panel.
Referring to fig. 4, in the display device 100 of the present application, the first determining module 12 includes a second receiving unit 121, a first determining unit 122, and a first controlling unit 123.
The second receiving unit 121 is configured to receive the connection status signal output by the second output module 23 of the source driver 20.
The first determining unit 122 is configured to determine whether the target signal is normal according to whether the connection status signal received by the second receiving unit is normal, and decode the connection status signal corresponding to the target signal in an abnormal state to obtain a reason why the target signal is abnormal.
The first control unit 123 controls whether the first output module 11 outputs the target signal to the source driver 20 according to the determination result of the first determination unit.
Wherein, when the first sub-determination unit 122 determines that the target signal is normal, the first control unit 123 controls the first output module 11 to continuously output the target signal to the source driver 20.
When the first sub-determination unit 122 determines that the target signal is normal, the first control unit 123 controls the first output module 11 to stop outputting the target signal to the source driver 20.
Referring to fig. 5, in the display device 100 of the present application, the first determining unit 122 includes a first sub-determining unit 1221 and a first sub-decoding unit 1222.
Wherein the first sub-determination unit 1221 is configured to determine whether the target signal is normal according to whether the connection status signal output by the second output module 23 of the source driver 20 is normal.
The first sub-decoding unit 1222 is configured to decode the connection status signal corresponding to the target signal in an abnormal state to obtain a reason for the target signal abnormality.
Referring to fig. 6, in the display device 100 of the present application, the second output module 23 includes a first encoding unit 231 and a second output unit 232.
The first encoding unit 231 is configured to encode the connection state signal according to a cause of the target signal abnormality when the second determination module 22 determines that the target signal is abnormal.
The second output unit 232 is configured to output the connection state signal corresponding to the target signal to the timing controller 10 according to a result of the second determination module 22 determining whether the target signal is normal.
In this embodiment, the working principle of the video transmission apparatus 100 may refer to the communication method of the display apparatus, and is not described in detail herein.
The application provides a display device and a communication method thereof. The communication method of the display device comprises the following steps: a timing controller controlling the target panel receives a source signal of the target panel to output the target signal to a source driver of the target panel; controlling a source driver of a target panel to receive a target signal to determine whether the target signal is abnormal; when the target signal accords with the communication protocol, the target signal is normal, and the time schedule controller continuously outputs the target signal to the source driver; otherwise, the target signal is abnormal, the time schedule controller stops outputting the target signal to the source driver, and the source driver transmits the connection state signal corresponding to the target signal in the abnormal state to the time schedule controller so as to acquire the reason of the target signal abnormality.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The display device and the communication method thereof provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (8)
1. A communication method of a display device, comprising:
a timing controller controlling a target panel receives a source signal of the target panel to output a target signal to a source driver of the target panel;
controlling a source driver of the target panel to receive the target signal so as to judge whether the target signal is abnormal or not;
when the target signal accords with a communication protocol, the target signal is normal, and the time schedule controller continuously outputs the target signal to the source driver; otherwise, the target signal is abnormal, the time schedule controller stops outputting the target signal to the source driver, and the source driver transmits a connection state signal corresponding to the target signal in an abnormal state to the time schedule controller so as to acquire the reason of the target signal abnormality;
wherein, the target signal is abnormal, the timing controller stops outputting the target signal to the source driver, and the source driver transmits a connection state signal corresponding to the target signal in an abnormal state to the timing controller, so as to obtain the reason of the target signal abnormality, and the method comprises the following steps:
the source driver acquires the reason of the target signal abnormity according to the communication protocol;
the source driver encodes the connection state signal according to the reason of the target signal abnormity;
the source driver transmits the encoded connection state signal to the timing controller;
the time schedule controller receives the connection state signal coded by the source driver;
the timing controller stops outputting the target signal to the source driver;
the timing controller decodes the connection state signal encoded by the source driver to acquire a cause of the target signal abnormality.
2. The communication method of claim 1, wherein the controlling the timing controller of the target panel to receive the source signal of the target panel to output the target signal to the source driver of the target panel comprises:
the time sequence controller for controlling the target panel receives a source signal of the target panel to acquire the target signal;
and the time schedule controller transmits the target signal to a source driver through the communication protocol.
3. The communication method of claim 1, wherein when the target signal is normal when the target signal conforms to a communication protocol, the continuously outputting the target signal to the source driver by the timing controller comprises:
the source driver continuously maintains the output connection state signal as a high level signal;
the time schedule controller receives the high level signal that the connection state signal is continuous;
the timing controller continuously outputs the target signal to the source driver.
4. The communication method of claim 1, wherein the encoding of the connection status signal by the source driver according to the reason for the abnormality of the target signal comprises:
the source driver switches the output connection state signal into a low level signal;
the source driver generates a corresponding high-level signal and a corresponding low-level signal in the connection state signals output within the time T according to the reason of the target signal abnormity;
wherein the time T is less than or equal to the duration of one horizontal blanking.
5. A display device includes a timing controller and a source driver;
the time schedule controller comprises a first output module for receiving a source signal of a target panel to output a target signal to a source driver of the target panel, and a first judging module for judging whether the target signal is normal or not according to a connection state signal output by the source driver;
the source driver comprises a second receiving module for receiving the target signal, a second judging module for judging whether the target signal is normal according to a communication protocol and acquiring the reason of the abnormality of the target signal in an abnormal state, and a second output module for outputting the corresponding connection state signal to the time schedule controller according to whether the target signal is normal or not;
when the target signal is normal, the second output module of the source driver outputs the connection state signal corresponding to the target signal in a normal state to the timing controller, the first determination module of the timing controller determines that the target signal is normal according to the connection state signal, and the first output module of the timing controller continuously outputs the target signal to the source driver;
when the target signal is abnormal, the second output module of the source driver outputs the connection state signal corresponding to the target signal in an abnormal state to the timing controller, the first determination module of the timing controller determines that the target signal is abnormal according to the connection state signal and acquires the reason of the target signal abnormality according to the connection state signal, and the first output module of the timing controller stops outputting the target signal to the source driver;
the second output module comprises a first coding unit and a second output unit;
the first coding unit is used for coding the connection state signal according to the reason of the target signal abnormity when the second judging module judges that the target signal is abnormal;
the second output unit is configured to output the connection state signal corresponding to the target signal to the timing controller according to a result of the second determination module determining whether the target signal is normal.
6. The display device according to claim 5, wherein the first output module comprises a first receiving unit, a first obtaining unit, and a first output unit;
the first receiving unit is used for receiving the source signal of the target panel;
the first acquisition unit is used for acquiring the target signal according to the source signal;
the first output unit is used for outputting the target signal to the source driver of the target panel.
7. The display device according to claim 5, wherein the first determination module includes a second receiving unit, a first determination unit, and a first control unit;
the second receiving unit is configured to receive the connection status signal output by the second output module of the source driver;
the first determination unit is configured to determine whether the target signal is normal according to whether the connection state signal received by the second receiving unit is normal, and decode the connection state signal corresponding to the target signal in an abnormal state to obtain a reason why the target signal is abnormal;
the first control unit controls whether the first output module outputs the target signal to the source driver according to the determination result of the first determination unit;
the first judging unit comprises a first sub-judging unit, and when the first sub-judging unit judges that the target signal is normal, the first control unit controls the first output module to continuously output the target signal to the source driver;
when the first sub-determination unit determines that the target signal is normal, the first control unit controls the first output module to stop outputting the target signal to the source driver.
8. The display device according to claim 7, wherein the first determination unit further comprises a first sub-decoding unit;
the first sub-determination unit is used for determining whether the target signal is normal according to whether the connection state signal output by the second output module of the source driver is normal;
the first sub-decoding unit is configured to decode the connection state signal corresponding to the target signal in an abnormal state to obtain a cause of the target signal abnormality.
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