CN111818380B - Interactive synchronous image display method and system for micro display unit - Google Patents
Interactive synchronous image display method and system for micro display unit Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/194—Transmission of image signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/398—Synchronisation thereof; Control thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/816—Monomedia components thereof involving special video data, e.g 3D video
Abstract
The invention discloses an interactive synchronous image display method and a display system of a micro display unit, wherein the display system comprises a first micro display controller, a second micro display controller, a first micro display and a second micro display, wherein auxiliary signals are arranged in the first micro display controller and the second micro display controller, and the auxiliary signals are mutually connected. Has the advantages that: the auxiliary signal processing unit arranged by the controller built in the micro display module is used for carrying out synchronization and related program communication, and the problems presented on the display are processed in real time, so that the invention can quickly judge abnormal synchronous signals displayed and switch the auxiliary signals to replace and synchronize in real time, thereby effectively avoiding the presentation of torn images due to the discontinuity of the images, effectively avoiding the uncomfortable phenomenon of a user on the aspect of viewing and feeling, and improving the entertainment experience of the viewer.
Description
Technical Field
The invention relates to the technical field of 3D display application, in particular to an interactive synchronous image display method and system of a miniature display unit.
Background
Virtual Reality (VR) is a Virtual three-dimensional space simulated by computer equipment, and then immersive head-mounted equipment is used to provide visual, auditory and tactile feedback to a user. Augmented Reality (AR), English is abbreviated as AR, directly projects or superposes the picture to the real environment through the computer, no longer needs immersive virtual experience, but directly projects to under the real life scene, and need not carry out effectual interaction with the picture of projecting with the help of other interactive equipment.
At present, the applications of AR/VR are more or less 3D stereoscopic applications, and Micro OLED can provide enjoyment with high resolution and high image quality in 3D applications, so that users can be immersed in experience close to reality. In response to 3D display, system application vendors and display module manufacturers have developed many synchronization schemes to ensure the best 3D display.
However, when the microdisplay is used in 3D applications, the system end uses a high-speed transmission interface to transmit high-resolution images, and there is a chance that the images will be torn due to discontinuity of images caused by system operations or other factors during transmission, and if one of the left and right images has discontinuity of images, the user will feel uncomfortable, and the user will not enjoy the superior performance of 3D applications.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The present invention provides an interactive synchronous image display method and system for a micro display unit to overcome the above-mentioned technical problems of the prior art.
Therefore, the invention adopts the following specific technical scheme:
according to an aspect of the present invention, there is provided an interactive synchronous image display method for a micro display unit, the display method comprising the steps of:
s1, the image transmission unit transmits the video data to the first micro-display and the second micro-display;
s2, the first micro-display receives the video data of the image transmission unit;
s3, the first micro display controller monitors and judges whether to enter a tearing effect TE transmission mode, if so, S4 is executed, and if not, S8 is executed;
s4, entering into the tearing TE signal synchronous alignment procedure;
s5, the first microdisplay controller controls the first microdisplay to switch the tearing-effect TE signal to a first auxiliary signal, and receives the tearing-effect TE signal of the second microdisplay by using a second auxiliary signal;
s6, the first microdisplay controller determining whether the phase of the first auxiliary signal tearing TE1 signal matches the phase of the second auxiliary signal tearing TE2 signal;
s7, if the phases are not matched, adjusting the phase of the tearing-effect TE1 signal of the first auxiliary signal, returning to S6, and if the phases are matched, executing S8;
s8, the first micro-display controller monitors and judges whether the periodic synchronization and the control signal maintain the same period, if yes, S20 is executed, and if no, S9 is executed;
s9, the first micro-display controller sets the corresponding abnormal periodic synchronization and control signal register flag as a default value;
s10, sending an interrupt request signal to the second micro-display controller by using the first auxiliary signal;
s11, the second micro-display controller uses the first auxiliary signal to send the read start code and address to the first micro-display after receiving the interrupt request from the first micro-display controller;
s12, the second microdisplay controller waiting for the first auxiliary signal to respond with a message from the first microdisplay controller;
s13, the first micro-display controller uses the first auxiliary signal to return and read the data of the address;
s14, the second micro-display controller receives the address data read by the first auxiliary signal and sends a reading stop command;
s15, the second micro-display controller determines which of the plurality of the address data belongs to which of the plurality of the periodic synchronization signals is abnormal;
s16, writing an abnormal periodic signal into the register by the second miniature display controller;
s17, the first micro-display controller reads the abnormal synchronization signal and switches the first auxiliary signal to replace the abnormal periodic signal;
s18, the second microdisplay controller switches a synchronization signal to the first auxiliary signal and provides the second microdisplay to replace the abnormal periodic signal;
s19, when the first auxiliary signal is occupied, the first and second micro-display controllers communicate and read using the second auxiliary signal;
s20, continuously monitoring the periodic synchronization and control signal.
Furthermore, auxiliary signals are respectively arranged in the first micro display controller and the second micro display controller, and the auxiliary signals comprise the first auxiliary signal and the second auxiliary signal.
Further, the first auxiliary signal and the second auxiliary signal each include multiple auxiliary functions such as a tearing TE signal or a sync reference signal, an interrupt notification signal, a register value read and write signal, and a substitute abnormal periodic signal.
Further, before determining that the periodic synchronization signal is abnormal in S15, the method further includes the following steps: and carrying out synchronous processing on the first micro-display and the second micro-display by adopting a preset method.
Further, the synchronization processing method utilizes a protocol tearing effect TE signal in a mobile industry processor interface MIPI or a self-configured signal inside a micro display controller to perform synchronization, and specifically includes the following steps:
the first micro-display and the second micro-display provide respective tearing effect TE signals or synchronous reference signals, phase comparison is carried out through an internal phase comparator, if the phases do not meet or the difference value exceeds a settable range, a middle value or a middle approximate value is obtained by utilizing the difference of the phases, the original phase is compensated, phase comparison is carried out again on the other micro-display, and if the phases meet or the difference value is within the settable range, synchronization of the first micro-display and the second micro-display is finished.
According to another aspect of the present invention, there is also provided an interactive synchronous image display system with a micro display unit, comprising a first micro display controller, a second micro display controller, a first micro display and a second micro display, wherein the first micro display controller and the second micro display controller are respectively provided with an auxiliary signal, and the auxiliary signals are connected to each other, wherein a first signal decoder is disposed inside the first micro display controller, and a second signal decoder is disposed inside the second micro display controller.
Further, the auxiliary signal includes a first auxiliary signal and a second auxiliary signal connected to the first signal decoder and the second signal decoder, and the first auxiliary signal in the first micro-display controller is connected to the second auxiliary signal in the second micro-display controller, and the second auxiliary signal in the first micro-display controller is connected to the first auxiliary signal in the second micro-display controller.
Further, the first auxiliary signal and the second auxiliary signal each include multiple auxiliary functions such as a tearing TE signal or a sync reference signal, an interrupt notification signal, a register value read and write signal, and a substitute abnormal periodic signal.
Furthermore, the first auxiliary signal and the second auxiliary signal are controlled by a detection circuit, the detection circuit is used for detecting a signal with a fixed continuous period and detecting whether a synchronous signal interval of the image changes, when the synchronous signal interval changes, the detection circuit processes the signals uniformly and switches the signals to the auxiliary signals, and the first auxiliary signal and the second auxiliary signal can be set to be multiple.
According to another aspect of the present invention, there is also provided an interactive synchronous image display system with micro display units, comprising a plurality of micro displays, wherein the micro displays are connected in series.
The invention has the beneficial effects that: the auxiliary signal processing unit arranged by the controller built in the micro display module is used for carrying out synchronization and related program communication, and the problems presented on the display are processed in real time, so that the invention can quickly judge abnormal synchronous signals displayed and switch the auxiliary signals to replace and synchronize in real time, thereby effectively avoiding the presentation of torn images due to the discontinuity of the images, effectively avoiding the uncomfortable phenomenon of a user on the aspect of viewing and feeling, and improving the entertainment experience of the viewer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments 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 to obtain other drawings without creative efforts.
FIG. 1 is a flowchart illustrating a method for displaying an interactive synchronous image on a micro-display unit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating phase alignment of a tearing TE signal in an interactive synchronous image display method for a micro-display unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating reading and writing of a specific exception register value in an interactive synchronous image display method for a microdisplay unit according to an embodiment of the invention;
FIG. 4 is a block diagram of an interactive synchronous video display system with micro display units according to a second embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating normal and continuous transmission of periodic signals and image data in the interactive synchronous image display system with micro-display units according to the second embodiment of the present invention;
FIG. 6 is a schematic diagram of the abnormal period signal occurring in the horizontal synchronization interval in the interactive synchronous image display system with micro display units according to the second embodiment of the present invention;
FIG. 7 is a schematic diagram of a micro-display unit interactive synchronous image display system according to a second embodiment of the present invention, in which periodic discontinuous signals appear in continuously transmitted frames;
FIG. 8 is a block diagram of an interactive synchronous video display system with micro display units according to a third embodiment of the present invention.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
According to an embodiment of the invention, an interactive synchronous image display method and a display system of a micro display unit are provided.
Example one
Referring to the drawings and the detailed description, the present invention will be further explained in detail, in which a method for displaying an interactive synchronous image on a micro display unit includes a display method using a first micro display controller or a second micro display controller as a start, as shown in fig. 1, in this embodiment, a display method using the first micro display controller as a start is mainly described, and the display method includes the following steps:
s1, the image transmission unit transmits the video data to the first micro-display and the second micro-display;
s2, the first micro-display receives the video data of the image transmission unit;
s3, the first micro display controller monitors and judges whether to enter a tearing effect TE transmission mode, if so, S4 is executed, and if not, S8 is executed;
s4, entering into the tearing TE signal synchronous alignment procedure;
s5, the first microdisplay controller controls the first microdisplay to switch the tearing-effect TE signal to a first auxiliary signal, and receives the tearing-effect TE signal of the second microdisplay by using a second auxiliary signal;
s6, the first microdisplay controller determining whether the phase of the first auxiliary signal tearing TE1 signal matches the phase of the second auxiliary signal tearing TE2 signal;
s7, if the phases are not matched, adjusting the phase of the tearing-effect TE1 signal of the first auxiliary signal, returning to S6, and if the phases are matched, executing S8;
s8, the first micro-display controller monitors and judges whether the periodic synchronization and the control signal maintain the same period, if yes, S20 is executed, and if no, S9 is executed;
s9, the first micro-display controller sets the corresponding abnormal periodic synchronization and control signal register flag to be a default value, the default value is "1";
s10, sending an interrupt request signal to the second micro-display controller by using the first auxiliary signal;
s11, the second micro-display controller uses the first auxiliary signal to send the read start code and address to the first micro-display after receiving the interrupt request from the first micro-display controller;
s12, the second microdisplay controller waiting for the first auxiliary signal to respond with a message from the first microdisplay controller;
s13, the first micro-display controller uses the first auxiliary signal to return and read the data of the address;
s14, the second micro-display controller receives the address data read by the first auxiliary signal and sends a reading stop command;
s15, the second micro-display controller determines which of the plurality of the address data belongs to which of the plurality of the periodic synchronization signals is abnormal;
wherein, before determining that the periodic synchronization signal is abnormal in S15, the method further includes the following steps: the first and second microdisplays are synchronized by a predetermined method, which operates on the principle of using the protocol tearing TE signal in MIPI (Mobile industry processor interface), or alternatively, using a self-asserted signal inside the microdisplay controller, such as a virtual vertical synchronization signal (Vsync).
The method specifically comprises the following steps:
the first micro-display and the second micro-display provide respective tearing effect TE signals or synchronous reference signals, phase comparison is carried out through an internal phase comparator, if the phases do not meet or the difference value exceeds a settable range, a middle value or a middle approximate value is obtained by utilizing the difference of the phases, the original phase is compensated, phase comparison is carried out again on the other micro-display, and if the phases meet or the difference value is within the settable range, synchronization of the first micro-display and the second micro-display is finished.
S16, writing an abnormal periodic signal into the register by the second miniature display controller;
s17, the first micro-display controller reads the abnormal synchronization signal and switches the first auxiliary signal to replace the abnormal periodic signal;
s18, the second microdisplay controller switches a synchronization signal to the first auxiliary signal and provides the second microdisplay to replace the abnormal periodic signal;
s19, when the first auxiliary signal is occupied, the first and second micro-display controllers communicate and read using the second auxiliary signal;
s20, continuously monitoring the periodic synchronization and control signal.
The first micro display controller and the second micro display controller are both provided with auxiliary signals, the auxiliary signals comprise the first auxiliary signals and the second auxiliary signals, the first auxiliary signals and the second auxiliary signals have multiple functions, and the auxiliary signals comprise tearing effect TE signals or synchronous reference signals, interrupt notification signals, register value reading and writing signals, and replacing abnormal periodic signals.
For the convenience of understanding the above technical solution of the present invention, as shown in fig. 2-3, the alignment of the tearing TE signal and the reading and writing of the specific exception register value are described in detail as follows:
FIG. 2 is a diagram illustrating the phase alignment of the TE1 signal of the first auxiliary signal and the TE2 signal of the second auxiliary signal;
FIG. 3 is a diagram illustrating the reading and writing of special exception register values, wherein the special exception register values are shown in the following table:
specifically, the reading and writing of the specific abnormal register value are shown in the steps of (ii) and (iii) of fig. 3, and the reading procedure is as follows (the micro display is simply referred to as a display unit in the following procedure):
the first auxiliary signal of the second display unit sends out a Start code (Start code) "A5" and then sends out a 1bit "0" read, then sends out a blank 1bit "0", then sends out a register Address (Address), then continues 1bit "0" to wait for the first display unit to reply and receive confirmation, at this time, the main control right of the auxiliary signal is switched to the first display unit, the first display unit waits for 1bit "0" after replying ACK 1bit "1", then sends out a register value (Data), continues 1bit "0", the main control right is switched to the second display unit again, and the second display unit sends out a stop code "5A". At this time, a read process is completed.
The write procedure for a particular exception register value is as follows:
the first auxiliary signal of the second display unit sends out the Start code (Start code) "A5" and then sends out 1bit "1" write, then sends out blank 1bit "0", then sends out the register Address (Address), then 1bit "0" continues to wait for the first display unit to reply and receive the confirmation, at this time, the main control right of the auxiliary signal is switched to the first display unit, the first display unit waits for 1bit "0" after replying ACK 1bit "1", the main control right is switched to the second display unit again, then sends out the register value (Data), at this time, the first display unit writes (Data) into the corresponding Address, continues 1bit "0", and the second display unit sends out the end code (stop) code "5A". At this point, a write process is completed.
The proper time for writing the auxiliary signal into and reading the register is usually in the blank interval of the vertical synchronizing signal during non-display to avoid the error of data in image caused by reading or writing.
Example two
The invention also provides a micro display unit interactive synchronous image display system, which is applied to a 3D double-screen virtual reality.A detection loop is added in a micro display controller, and the system has the function of detecting whether the period synchronous signal time of an image changes or not, when the period synchronous signal time changes, an interrupt is started to inform a second micro display, and when the second micro display receives an interrupt signal from a first micro display, a specific register value of the first micro display is read through a first auxiliary signal of the second micro display to judge which period signal is abnormal, and meanwhile, a corresponding normal periodic signal is switched to the first auxiliary signal to provide the first micro display for replacing the abnormal periodic signal.
As shown in fig. 4, the interactive synchronous image display system of the micro display unit comprises a first micro display controller, a second micro display controller, a first micro display and a second micro display, wherein the first micro display controller and the second micro display controller are respectively provided with an auxiliary signal, and the auxiliary signals are connected with each other,
the first miniature display controller is internally provided with a first signal decoder, and the second miniature display controller is internally provided with a second signal decoder.
The auxiliary signal comprises a first auxiliary signal and a second auxiliary signal connected with the first signal decoder and the second signal decoder, the first auxiliary signal in the first micro-display controller is connected with the second auxiliary signal in the second micro-display controller, and the second auxiliary signal in the first micro-display controller is connected with the first auxiliary signal in the second micro-display controller.
Specifically, the first auxiliary signal and the second auxiliary signal each include multiple auxiliary functions such as a tearing TE signal or a sync reference signal, an interrupt notification signal, a register value read/write signal, and a substitute abnormal periodic signal.
The first auxiliary signal and the second auxiliary signal are controlled by a detection circuit, the detection circuit is used for detecting a signal with a continuous fixed period and detecting whether a synchronous signal interval of an image changes, when the synchronous signal interval of the image changes, the detection circuit processes the signals uniformly and switches the signals to the auxiliary signals, and the first auxiliary signal and the second auxiliary signal can be set to be multiple.
In the embodiment, the controller of the micro-display is provided with the image streaming detection circuit, when the detection circuit detects the discontinuity of the image, the auxiliary signal arranged in the controller is automatically used for switching, so that the discontinuous synchronous signal or the control signal can be connected to the normal synchronous signal of another micro-display by using the auxiliary signal, and the display of the torn image caused by the discontinuity of the image is effectively avoided.
In order to facilitate understanding of the above technical solutions of the present invention, the following compares the normal and continuous signals with the abnormal periodic and discontinuous periodic signals with reference to fig. 5-7. The method comprises the following specific steps:
as shown in fig. 5, which is a schematic diagram showing a normal and continuous transmission of periodic signals and image data, it can be known from fig. 5 that a Frame (Frame) in the specification of the display transmission signal includes a vertical synchronization signal (Vsync). In the time domain of a vertical synchronization signal (Vsync), a plurality of horizontal synchronization signals (Hsync), a plurality of Data Enable signals (DE) and image Data are included;
as shown in fig. 6, the signal indicating that the abnormal period occurs in the horizontal synchronization interval is shown, and the time difference between the normal period and the abnormal period is shown;
as shown in fig. 7, it is indicated that the vertical synchronization signal with discontinuous periods appears in the continuously transmitted frames (frames), and the time difference between the normal period and the abnormal period is marked.
EXAMPLE III
The invention also provides an interactive synchronous image display system with micro display units, as shown in fig. 8, the display system comprises a plurality of micro displays, and the micro displays are connected in series, wherein, in the third embodiment, the number of the micro displays is increased to more than 2 on the basis of the second embodiment, and the micro displays are connected in series, and meanwhile, the same effect of the second embodiment can be achieved.
In order to facilitate understanding of the above-described technical aspects of the present invention, a theoretical basis of the present invention in an actual process will be described in detail below.
The theory is as follows:
typically, small-sized displays use MIPI (mobile industry processor interface) transport protocols to communicate with front-end systems.
The MIPI DSI protocol standard supports two modes: command (CMD for short) mode and Video mode.
The Command mode can only be used when the LCD (liquid Crystal display) panel is provided with a display controller and a frame buffer. The format of the data transfer is typically pixel data followed by command parameters (if any) and commands. The host side can read and write the contents of the registers and frame buffers of the LCD controller.
The time when each frame starts to transmit can be controlled by a TE (tearing effect) signal (output by the LCD panel) or its external pin can be used, the TE line or TE trigger information directly transmitted through the DSI interface.
To use the CMD mode, the LCD panel needs to have a built-in timing controller and buffer memory space (typically RAM). To prevent the occurrence of a Tearing Effect LCD screen, it is necessary to transmit its timing event information to the host side. The transmission of such timing events in CMD mode can be achieved in 3 ways:
automatic mode: software STARTs transferring data when the TE _ START bit of the DSI _ VC _ TE _ i [31] register is set to 0x1 (in which case the DSI _ VC _ TE _ i [30], TE _ EN bit, must be set to 0x 0). The TE _ START bit is automatically cleared by hardware once the data transfer is complete. This mode allows the transfer of data to be controlled manually by a software application or using TE interrupts. If the data transfer does not match the TE signal, screen cut or split may occur.
DSI physical TE flip-flop: the MIPI DSI standard defines a TE trigger packet from the screen to the host. Upon receipt of such a packet, the pixel data of Host automatically starts to be transferred.
CMOS TE line: this approach is not part of the MIPI DSI standard, but OMAP supports it. This approach uses a separate signal line (GPIO) to transmit the TE signal, and data transfer begins when the signal on the TE cmos line comes. Two TE lines are supported on OMAP. One TE line may control one or more virtual channels.
When the electronic device does not have the MIPI transmission mode, the data source continuously provides the image on the display, but when the display receives data in a non-real time manner and causes delay or interruption, the image presents a tearing condition.
If a display electronics has an image tearing effect correction circuit that provides a tearing effect signal (TE) to a video data source that provides frame data to the electronic display device, the image discontinuity is avoided.
However, if the display electronic device does not have the image tearing effect correction circuit, the invention can be used for switching more than one display unit to process the periodic synchronous signals to avoid the generation of the tearing image in the application field of the micro-display.
In summary, according to the above-mentioned technical solution of the present invention, the auxiliary signal processing unit disposed in the controller built in the micro display module is utilized to perform synchronization and related program communication, so as to process the problem presented on the display in real time, thereby enabling the present invention to quickly determine the abnormal synchronization signal and switch the auxiliary signal to replace and synchronize, thereby effectively avoiding the presentation of the torn image due to the discontinuity of the image, effectively avoiding the discomfort phenomenon of the user in the sense of view, and improving the entertainment experience of the viewer.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An interactive synchronous image display method for a micro display unit, the method comprising:
s1, the image transmission unit transmits the video data to the first micro-display and the second micro-display;
s2, the first micro-display receives the video data of the image transmission unit;
s3, the first micro display controller monitors and judges whether to enter a tearing effect TE transmission mode, if so, S4 is executed, and if not, S8 is executed;
s4, entering into the tearing TE signal synchronous alignment procedure;
s5, the first microdisplay controller controls the first microdisplay to switch the tearing-effect TE signal to a first auxiliary signal, and receives the tearing-effect TE signal of the second microdisplay by using a second auxiliary signal;
s6, the first microdisplay controller determining whether the phase of the first auxiliary signal tearing TE1 signal matches the phase of the second auxiliary signal tearing TE2 signal;
s7, if the phases are not matched, adjusting the phase of the tearing-effect TE1 signal of the first auxiliary signal, returning to S6, and if the phases are matched, executing S8;
s8, the first micro-display controller monitors and judges whether the periodic synchronization and the control signal maintain the same period, if yes, S20 is executed, and if no, S9 is executed;
s9, the first micro-display controller sets the corresponding abnormal periodic synchronization and control signal register flag as a default value;
s10, sending an interrupt request signal to the second micro-display controller by using the first auxiliary signal;
s11, the second micro-display controller uses the first auxiliary signal to send the read start code and address to the first micro-display after receiving the interrupt request from the first micro-display controller;
s12, the second microdisplay controller waiting for the first auxiliary signal to respond with a message from the first microdisplay controller;
s13, the first micro-display controller uses the first auxiliary signal to return and read the data of the address;
s14, the second micro-display controller receives the address data read by the first auxiliary signal and sends a reading stop command;
s15, the second micro-display controller determines which of the plurality of the address data belongs to which of the plurality of the periodic synchronization signals is abnormal;
s16, writing an abnormal periodic signal into the register by the second miniature display controller;
s17, the first micro-display controller reads the abnormal synchronization signal and switches the first auxiliary signal to replace the abnormal periodic signal;
s18, the second microdisplay controller switches a synchronization signal to the first auxiliary signal and provides the second microdisplay to replace the abnormal periodic signal;
s19, when the first auxiliary signal is occupied, the first and second micro-display controllers communicate and read using the second auxiliary signal;
s20, continuously monitoring the periodic synchronization and control signal.
2. The method as claimed in claim 1, wherein auxiliary signals are provided in each of the first and second microdisplay controllers, the auxiliary signals including the first and second auxiliary signals.
3. The method as claimed in claim 2, wherein the first auxiliary signal and the second auxiliary signal each comprise multiple auxiliary functions of tearing TE signal or synchronous reference signal, interrupt notification signal, register value read and write signal, and substitute abnormal periodic signal.
4. The interactive synchronized image displaying method of claim 1, wherein said step of S15, before determining the abnormality of the periodical synchronization signal, further comprises the steps of: and carrying out synchronous processing on the first micro-display and the second micro-display by adopting a preset method.
5. The method as claimed in claim 4, wherein the synchronization processing method utilizes a protocol Tearing Effect (TE) signal in Mobile Industry Processor Interface (MIPI) or a self-configured signal inside the micro display controller for synchronization, and the synchronization processing method comprises the following steps:
the first micro-display and the second micro-display provide respective tearing effect TE signals or synchronous reference signals, phase comparison is carried out through an internal phase comparator, if the phases do not meet or the difference value exceeds a settable range, a middle value or a middle approximate value is obtained by utilizing the difference of the phases, the original phase is compensated, phase comparison is carried out again on the other micro-display, and if the phases meet or the difference value is within the settable range, synchronization of the first micro-display and the second micro-display is finished.
6. A micro-display unit interactive synchronous image display system for realizing the micro-display unit interactive synchronous image display method of any one of claims 1-5, comprising a first micro-display controller, a second micro-display controller, a first micro-display and a second micro-display, wherein the first micro-display controller and the second micro-display controller are respectively provided with an auxiliary signal, and the auxiliary signals are connected with each other, wherein a first signal decoder is arranged inside the first micro-display controller, and a second signal decoder is arranged inside the second micro-display controller.
7. The interactive synchronous video display system of claim 6, wherein the auxiliary signals comprise a first auxiliary signal and a second auxiliary signal connected to the first signal decoder and the second signal decoder, and the first auxiliary signal of the first microdisplay controller is connected to the second auxiliary signal of the second microdisplay controller, and the second auxiliary signal of the first microdisplay controller is connected to the first auxiliary signal of the second microdisplay controller.
8. The interactive synchronous video display system of claim 7, wherein the first auxiliary signal and the second auxiliary signal each comprise multiple auxiliary functions of tearing TE signal or synchronous reference signal, interrupt notification signal, register value read and write signal, and substitute abnormal periodic signal.
9. The interactive synchronous video display system of claim 8, wherein the first auxiliary signal and the second auxiliary signal are controlled by a detection circuit, and the detection circuit is configured to detect a signal with a continuous period and detect whether a synchronous signal interval of the video changes, when there is a change, the detection circuit processes the signal uniformly and switches to the auxiliary signal, and the first auxiliary signal and the second auxiliary signal can be set to be plural.
10. A micro display unit interactive synchronous image display system for realizing the micro display unit interactive synchronous image display method of any one of claims 1 to 5, characterized in that the system comprises a plurality of micro displays, and the micro displays are connected in series.
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