CN108206017B - Method and system for improving screen jumping of liquid crystal panel - Google Patents
Method and system for improving screen jumping of liquid crystal panel Download PDFInfo
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- CN108206017B CN108206017B CN201810074295.5A CN201810074295A CN108206017B CN 108206017 B CN108206017 B CN 108206017B CN 201810074295 A CN201810074295 A CN 201810074295A CN 108206017 B CN108206017 B CN 108206017B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The invention discloses a method and a system for improving screen skipping of a liquid crystal panel.
Description
Technical Field
The invention relates to the technical field of liquid crystal screens, in particular to a method and a system for improving screen jumping of a liquid crystal panel.
Background
The real-time sequence control board of TCON (timing controller) board, in the liquid crystal display system, it is used for bridging front end mother board and liquid crystal faceplate, mainly have two aspects effects, first of all, connect video signal that the mother board sends of front end of receiving through LVDS interface or V-By-One interface, resume parallel image data, line synchronizing signal, field synchronizing signal, data valid signal and receiving clock in the signal, then change the image data into the data format corresponding to liquid crystal faceplate under the control of line synchronizing signal, field two-step signal, data valid signal and receiving clock, scan the image data to the liquid crystal faceplate to display through differential data and clock signal connected to liquid crystal faceplate and scan the control signal connected to liquid crystal faceplate; and secondly, providing all paths of power supplies required by the work for the liquid crystal panel.
In a liquid crystal display system, a front-end motherboard generally needs to be compatible with signal sources of multiple formats. When the signal source of the front-end mainboard is switched, the video signal correspondingly sent to the TCON board also changes. When the variation range of the video signal parameter exceeds the tracking range of the TCON board, the TCON board needs to adapt to the new signal format again, and correspondingly, when the variation range of the signal sent to the liquid crystal panel by the TCON board exceeds the tracking range of the liquid crystal panel, the liquid crystal panel needs to adapt to the new signal format again. In the adaptation process of the new signal format, the image displayed on the liquid crystal panel is wrong or incomplete, the switching process of the displayed image from normal to wrong to normal is the screen skipping phenomenon, and although the duration of the screen skipping phenomenon is short and generally within one second, the user experience can be greatly influenced.
Disclosure of Invention
The invention provides a method and a system for improving screen skipping of a liquid crystal panel, and solves the problem that in the prior art, screen skipping of the liquid crystal panel influences user experience.
The technical scheme of the invention is realized as follows:
the invention discloses a method for improving screen skipping of a liquid crystal panel, which shields a scanning control signal to stop scanning of the liquid crystal panel when parameters of a data effective signal, a receiving clock, a line synchronizing signal and a field synchronizing signal are abnormal.
Further, the method specifically comprises the following steps:
(1) after being processed By the receiving and decoding module, the LVDS or V-By-One input signal recovers a data effective signal, a receiving clock, a line synchronization signal, a field synchronization signal and parallel image data;
(2) the image data writing control module writes the parallel image data into the dual-port memory under the control of the data effective signal, the line synchronizing signal and the field synchronizing signal;
(3) the image data reading control module reads out the image data in the dual-port memory under the control of the reading synchronous control signal, and sends the image data to the data format conversion and scanning control module for format conversion. Then outputting by connecting to the liquid crystal panel differential data and clock signals;
(4) the signal parameter monitoring module monitors a data effective signal, a receiving clock, a horizontal synchronizing signal and a field synchronizing signal in real time, and outputs a parameter change marking signal when the signal parameter is abnormal;
(5) the data format conversion and scanning control module is controlled by the parameter change mark signal, and when the parameter change mark signal is effective, the data format conversion and scanning control module controls the scanning control signal connected to the liquid crystal panel to stop scanning of the liquid crystal panel.
Furthermore, the synchronous clock of the signal parameter monitoring module, the image data reading control module and the data format conversion and scanning control module is an external reference clock, and the reference clock of the image data writing control module is a receiving clock.
The invention also discloses a system for improving the screen skipping of the liquid crystal panel, which comprises a receiving and decoding module, a signal parameter detection module, an image data reading and synchronizing control module, an image data writing control module, a double-port memory, an image data reading control module, a reference clock, a data format conversion module and a scanning control module;
the receiving and decoding module decodes LVDS or V-By-One input signals input By the input end to recover a data effective signal, a receiving clock, a line synchronization signal, a field synchronization signal and parallel image data, and the data effective signal, the receiving clock, the line synchronization signal and the field synchronization signal are respectively sent to the signal parameter detection module, the image data read synchronization control module and the image data write control module;
the image data writing control module writes parallel image data into the dual-port memory under the control of a data effective signal, a line synchronizing signal and a field synchronizing signal;
the image data reading synchronous control module sends a reading synchronous control signal to the image data reading control module;
the reference clock sends reference clock signals to the signal parameter detection module, the image data reading control module and the data format conversion and scanning control module respectively;
the image data reading control module reads the image data in the dual-port memory under the control of the reading synchronous control signal and sends the image data to the data format conversion and scanning control module for format conversion;
when the signal parameter detection module is abnormal, the signal parameter detection module outputs an effective parameter change mark signal to the data format conversion and scanning control module;
the data format conversion and scanning control module sends differential data and clock signals connected to the liquid crystal panel and scanning control signals connected to the liquid crystal panel; and when the parameter change mark signal is effective, controlling the liquid crystal panel to stop scanning through the scanning control signal.
Further, the reference clock is an external reference clock.
The invention has the beneficial effects that: when the parameters of the data effective signal, the receiving clock, the line synchronizing signal and the field synchronizing signal are abnormal, the scanning control signal is shielded, and the liquid crystal panel stops scanning, so that an image displayed on the liquid crystal panel is not refreshed any more, and the screen jumping phenomenon caused by the abnormal parameters of the data effective signal, the receiving clock, the line synchronizing signal and the field synchronizing signal is eliminated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for improving screen skipping of a liquid crystal panel according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
As shown in fig. 1, the present invention provides a method for improving screen skipping of a liquid crystal panel, wherein when parameters of a data valid signal, a receiving clock, a line synchronization signal and a field synchronization signal are abnormal, a scanning control signal is shielded to stop scanning of the liquid crystal panel, so that an erroneous or incomplete image is not displayed on the liquid crystal panel, and the screen skipping phenomenon caused by the abnormal parameters of the data valid signal, the receiving clock, the line synchronization signal and the field synchronization signal is eliminated.
The method specifically comprises the following steps:
(1) after being processed By the receiving and decoding module, the LVDS or V-By-One input signal recovers a data effective signal, a receiving clock, a line synchronization signal, a field synchronization signal and parallel image data;
(2) the image data writing control module writes the parallel image data into the dual-port memory under the control of the data effective signal, the line synchronizing signal and the field synchronizing signal;
(3) the image data reading control module reads out the image data in the dual-port memory under the control of the reading synchronous control signal, and sends the image data to the data format conversion and scanning control module for format conversion. Then outputting by connecting to the liquid crystal panel differential data and clock signals;
(4) the signal parameter monitoring module monitors a data effective signal, a receiving clock, a horizontal synchronizing signal and a field synchronizing signal in real time, and outputs a parameter change marking signal when the signal parameter is abnormal;
(5) the data format conversion and scanning control module is controlled by the parameter change mark signal, and when the parameter change mark signal is effective, the data format conversion and scanning control module controls the scanning control signal connected to the liquid crystal panel to stop scanning of the liquid crystal panel.
The synchronous clock of the signal parameter monitoring module, the image data reading control module and the data format conversion and scanning control module is an external reference clock, and the reference clock of the image data writing control module is a receiving clock. When the frequency parameter of the reception clock is changed, the rate of the differential data connected to the liquid crystal panel and the clock signal frequency are not changed. The data receiving process of the liquid crystal panel is not influenced by the change of the receiving clock frequency, and the stability of the differential data rate and the clock signal frequency connected to the liquid crystal panel is ensured. The data receiving process of the liquid crystal panel is not influenced by the frequency change of the receiving clock, and the screen jumping phenomenon caused by the fact that the change range of the signal sent to the liquid crystal panel by the TCON board exceeds the tracking range of the liquid crystal panel is eliminated.
The invention also discloses a system for improving the screen skipping of the liquid crystal panel, which comprises a receiving and decoding module, a signal parameter detection module, an image data reading and synchronizing control module, an image data writing control module, a double-port memory, an image data reading control module, a reference clock, a data format conversion module and a scanning control module;
the receiving and decoding module decodes the LVDS or V-By-One input signal input By the input end to recover a data effective signal, a receiving clock, a line synchronization signal, a field synchronization signal and parallel image data, and the data effective signal, the receiving clock, the line synchronization signal and the field synchronization signal are respectively sent to the signal parameter detection module, the image data read synchronization control module and the image data write control module;
the image data writing control module writes the parallel image data into the dual-port memory under the control of the data effective signal, the line synchronizing signal and the field synchronizing signal;
the image data reading synchronous control module sends a reading synchronous control signal to the image data reading control module;
the reference clock sends a reference clock signal to the signal parameter detection module, the image data reading control module and the data format conversion and scanning control module respectively;
the image data reading control module reads the image data in the dual-port memory under the control of the reading synchronous control signal, and sends the image data to the data format conversion and scanning control module for format conversion;
when the signal parameter is abnormal, the signal parameter detection module outputs an effective parameter change mark signal to the data format conversion and scanning control module;
the data format conversion and scanning control module sends differential data and clock signals connected to the liquid crystal panel and scanning control signals connected to the liquid crystal panel; and when the parameter change mark signal is effective, controlling the liquid crystal panel to stop scanning through the scanning control signal.
The reference clock is an external reference clock.
When the parameters of the data effective signal, the receiving clock, the line synchronizing signal and the field synchronizing signal are abnormal, the scanning control signal is shielded, and the liquid crystal panel stops scanning, so that an image displayed on the liquid crystal panel is not refreshed any more, and the screen jumping phenomenon caused by the abnormal parameters of the data effective signal, the receiving clock, the line synchronizing signal and the field synchronizing signal is eliminated. When the frequency parameter of the reception clock is changed, the rate of the differential data connected to the liquid crystal panel and the clock signal frequency are not changed. The data receiving process of the liquid crystal panel is not influenced by the frequency change of the receiving clock, and the screen jumping phenomenon caused by the fact that the change range of the signal sent to the liquid crystal panel by the TCON board exceeds the tracking range of the liquid crystal panel is eliminated.
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 (4)
1. A method for improving screen jumping of a liquid crystal panel is characterized in that: when the parameters of the data effective signal, the receiving clock, the line synchronizing signal and the field synchronizing signal are abnormal, shielding the scanning control signal to stop scanning the liquid crystal panel; the method specifically comprises the following steps:
(1) after being processed By the receiving and decoding module, the LVDS or V-By-One input signal recovers a data effective signal, a receiving clock, a line synchronization signal, a field synchronization signal and parallel image data;
(2) the image data writing control module writes the parallel image data into the dual-port memory under the control of the data effective signal, the line synchronizing signal and the field synchronizing signal;
(3) the image data reading control module reads the image data in the double-port memory under the control of the reading synchronous control signal, sends the image data into the data format conversion and scanning control module for format conversion, and then outputs the image data and the clock signal by being connected to the differential data of the liquid crystal panel;
(4) the signal parameter monitoring module monitors a data effective signal, a receiving clock, a horizontal synchronizing signal and a field synchronizing signal in real time, and outputs a parameter change marking signal when the signal parameter is abnormal;
(5) the data format conversion and scanning control module is controlled by the parameter change mark signal, and when the parameter change mark signal is effective, the data format conversion and scanning control module controls the scanning control signal connected to the liquid crystal panel to stop scanning of the liquid crystal panel.
2. The method for improving the screen jumping of the liquid crystal panel as claimed in claim 1, wherein: the synchronous clock of the signal parameter monitoring module, the image data reading control module and the data format conversion and scanning control module is an external reference clock, and the reference clock of the image data writing control module is a receiving clock.
3. The system for improving screen jumping of the liquid crystal panel is characterized in that: the device comprises a receiving and decoding module, a signal parameter detection module, an image data reading and synchronizing control module, an image data writing control module, a double-port memory, an image data reading control module, a reference clock, a data format conversion and scanning control module;
the receiving and decoding module decodes LVDS or V-By-One input signals input By the input end to recover a data effective signal, a receiving clock, a line synchronization signal, a field synchronization signal and parallel image data, and the data effective signal, the receiving clock, the line synchronization signal and the field synchronization signal are respectively sent to the signal parameter detection module, the image data read synchronization control module and the image data write control module;
the image data writing control module writes parallel image data into the dual-port memory under the control of a data effective signal, a line synchronizing signal and a field synchronizing signal;
the image data reading synchronous control module sends a reading synchronous control signal to the image data reading control module;
the reference clock sends reference clock signals to the signal parameter detection module, the image data reading control module and the data format conversion and scanning control module respectively;
the image data reading control module reads the image data in the dual-port memory under the control of the reading synchronous control signal and sends the image data to the data format conversion and scanning control module for format conversion;
when the signal parameter detection module is abnormal, the signal parameter detection module outputs an effective parameter change mark signal to the data format conversion and scanning control module;
the data format conversion and scanning control module sends differential data and clock signals connected to the liquid crystal panel and scanning control signals connected to the liquid crystal panel; and when the parameter change mark signal is effective, controlling the liquid crystal panel to stop scanning through the scanning control signal.
4. The system for improving the screen jumping of the liquid crystal panel as claimed in claim 3, wherein: the reference clock is an external reference clock.
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| CN201810074295.5A CN108206017B (en) | 2018-01-25 | 2018-01-25 | Method and system for improving screen jumping of liquid crystal panel |
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| CN201810074295.5A CN108206017B (en) | 2018-01-25 | 2018-01-25 | Method and system for improving screen jumping of liquid crystal panel |
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