CN108898986B - Display method and display device - Google Patents
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- 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
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation
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Abstract
The invention provides a display method and a display device, belongs to the technical field of display, and can solve the problem of signal interference in the existing display. The display method of the invention comprises the following steps: detecting the error rate of data signals transmitted by the source driver to each frame of picture in real time by the time sequence controller; when the error rate of the data signal of the M +1 th frame is detected to be a first error rate and the first error rate is greater than a preset value, increasing the amplitude level of the data signal of the M +1 th frame; when the error rates of the data signals of the continuous N frames of pictures are all smaller than the first error rate after the M frame of picture is detected, the amplitude level of the data signals of the M + N +1 frame of picture is reduced; wherein M is more than or equal to 1; n is more than or equal to 5 and less than or equal to 10.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display method and a display device.
Background
With the rapid development of display technology, the requirements for display driving chips are higher and higher, and especially with the popularization of high resolution, higher requirements are made for signal transmission rate, so that the current mainstream driving signal transmission mode gradually changes from low-speed Mini-LVDS (low voltage differential signaling technology interface) signals to high-speed P2P signals. Due to the fast transmission rate, the P2P signal itself has higher requirements for the whole driving circuit system, otherwise the problems such as EMI (the electronic product will interfere with other peripheral electronic products) and interference resistance become more prominent.
At present, the popularity of electronic products is higher and higher, and the opportunities for cross use are also more, so the problem of electromagnetic interference occurs, especially the interference of the GSM mobile phone with higher transmitting power to the P2P signal is great. For example, when a GSM mobile phone is used beside a P2P signal notebook computer, the P2P signal distortion may cause the notebook computer to generate a splash screen phenomenon. To address this problem, there are two main approaches: firstly, the amplitude of a P2P signal is increased, the signal-to-noise ratio is improved, but the higher amplitude EMI is not good; secondly, Cell tap is pasted to shield interference, but the cost is increased and the manufacturing difficulty is increased.
Disclosure of Invention
The present invention is directed to at least one of the technical problems of the prior art, and provides a display method and a display device with external interference resistance.
The technical scheme adopted for solving the technical problem of the invention is a display method, which is characterized by comprising the following steps:
detecting the error rate of data signals transmitted by the source driver to each frame of picture in real time by the time sequence controller;
when the error rate of the data signal of the M +1 th frame is detected to be a first error rate and the first error rate is greater than a preset value, increasing the amplitude level of the data signal of the M +1 th frame; and the number of the first and second groups,
when the error rates of the data signals of the continuous N frames of pictures are all smaller than the first error rate after the M frame of picture is detected, the amplitude level of the data signals of the M + N +1 frame of picture is reduced; wherein M is more than or equal to 1; n is more than or equal to 5 and less than or equal to 10.
Preferably, the step of increasing the amplitude level of the data signal of the M +1 th frame when it is detected that the error rate of the data signal of the mth frame is a first error rate and the first error rate is greater than a preset value includes:
acquiring the maximum bit error rate in the bit error rate interval corresponding to the amplitude grade according to a prestored corresponding relation table between the amplitude grade and the bit error rate interval and the amplitude grade of the data signal of the Mth frame picture;
and when detecting that the error rate of the data signal of the M frame picture is a first error rate and the first error rate is greater than the maximum error rate in an error rate interval corresponding to the amplitude level of the data signal of the M frame picture, increasing the amplitude level of the data signal of the M +1 frame picture.
Preferably, when it is detected that the error rates of the data signals of N consecutive frames are less than the first error rate after the mth frame, the step of reducing the amplitude level of the data signal of the M + N +1 th frame includes:
and when the data signals of the N continuous frames are detected to be smaller than the first error rate after the M frame, reducing the amplitude level of the data signal of the M +1 frame by one level to be used as the amplitude level of the data signal of the M + N +1 frame.
Further preferably, if the amplitude level of the data signal of the M + N +1 th frame is not the lowest level among the amplitude levels stored in advance, the method further includes:
after detecting the M + N frame picture, if the error rate of the data signal of each continuous N frame picture is less than the error rate of the data signal of the previous frame picture of the N frame picture, the amplitude of the data signal of the next frame picture of the N frame picture is reduced by one level until the amplitude level is reduced to the lowest level in the prestored amplitude levels.
Preferably, the method further comprises:
judging whether the data signal transmitted by the time schedule controller to the source driver is locked or not;
if the data signal is not locked, setting the data signal to the ground, and adjusting the amplitude level of the data signal to the highest level in the prestored amplitude levels.
Preferably, the data signal transmitted from the timing controller to the source driver is a P2P transmission scheme.
The technical scheme adopted for solving the technical problem of the invention is a display device, which comprises: a timing controller and a source driver, the display device further comprising:
the error rate detection module is used for detecting the error rate of the data signal transmitted to the source electrode driver by the time sequence controller in real time for each frame of picture;
the amplitude adjustment module is used for increasing the amplitude level of the data signal of the M +1 th frame when the error rate of the data signal of the M +1 th frame is detected to be a first error rate and the first error rate is greater than a preset value; and the number of the first and second groups,
when the error rates of the data signals of the continuous N frames of pictures are all smaller than the first error rate after the M frame of picture is detected, the amplitude level of the data signals of the M + N +1 frame of picture is reduced; wherein M is more than or equal to 1; n is more than or equal to 5 and less than or equal to 10.
Preferably, the display device further includes: the device comprises a storage module and an acquisition module; wherein the content of the first and second substances,
the storage module is used for storing a corresponding relation table of the amplitude grade and the error rate interval;
the obtaining module is used for obtaining the maximum bit error rate in the bit error rate interval corresponding to the amplitude grade according to the corresponding relation table of the amplitude grade and the bit error rate interval pre-stored in the storage module and the amplitude grade of the data signal of the Mth frame picture;
the amplitude adjustment module is specifically configured to increase the amplitude level of the data signal of the M +1 th frame when it is detected that the error rate of the data signal of the mth frame is a first error rate, and the first error rate is greater than a maximum error rate in an error rate interval corresponding to the amplitude level of the data signal of the mth frame; and when the data signals of the N continuous frames are detected to be smaller than the first error rate after the M frame, reducing the amplitude level of the data signal of the M +1 frame by one level to be used as the amplitude level of the data signal of the M + N +1 frame.
Preferably, the display device further includes:
the amplitude level judging module is used for judging whether the amplitude level of the data signal is the lowest level and/or the highest level in the prestored amplitude levels;
the amplitude adjusting module is further configured to, after detecting the M + N frame picture, reduce the error rate of the data signal of each consecutive N frame pictures to be less than the error rate of the data signal of a picture preceding the N frame picture after detecting that the amplitude level of the data signal of the M + N +1 th frame picture is not the lowest level of the prestored amplitude levels until the amplitude level is reduced to the lowest level of the prestored amplitude levels.
Preferably, the display device further includes:
the locking judging module is used for judging whether the data signals transmitted to the source electrode driver by the time sequence controller are locked or not;
the amplitude adjusting module is further configured to set the data signal to ground when the data signal is not locked by the lock determination module, and adjust the amplitude level of the data signal to a highest level among pre-stored amplitude levels.
Drawings
Fig. 1 is a flowchart of a display method according to embodiment 2 of the present invention;
fig. 2 is a structural diagram of a display device according to embodiment 3 of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
the present embodiment provides a display method, including: detecting the error rate of data signals transmitted by the source driver to each frame of picture in real time by the time sequence controller; when the error rate of the data signal of the M +1 th frame is detected to be a first error rate and the first error rate is larger than a preset value, increasing the amplitude level of the data signal of the M +1 th frame; when the error rates of the data signals of the continuous N frames of pictures are all smaller than the first error rate after the M frame of picture is detected, the amplitude level of the data signals of the M + N +1 frame of picture is reduced; wherein M is more than or equal to 1; n is more than or equal to 5 and less than or equal to 10.
It should be noted that M, N are all frames, so M, N takes on integers; the larger the amplitude level is, the larger the amplitude is represented in the present embodiment. If the error rate of the data signal is higher, it means that a data signal with a higher amplitude is required for the next frame of image display.
In the display method provided in this embodiment, the error rate of the data signal of each frame is detected, and the amplitude level of the data signal is adjusted in real time, so as to improve the interference of the interference signal to the display screen.
Example 2:
as shown in fig. 1, the present embodiment provides a display method, which specifically includes the following steps:
step one, detecting each frame of picture in real time, and the error rate of data signals transmitted to the source electrode driver by the time sequence controller.
The data signal transmission method of the timing controller and the source driver preferably adopts a P2P transmission method to make the data transmission speed of the data signal faster.
In this step, the bit error rate of the data signal transmitted from the timing controller to the source driver may be specifically detected by the bit error rate detection module for each effective display period of the frame. The effective display time interval of each frame of picture refers to a time interval for displaying pictures through a data signal, a transition area is usually formed between the effective display time intervals of two adjacent frames of pictures, and the time interval for detecting the error rate of the data signal is formed between the effective display time interval of one frame of display picture and the transition area of the effective display time interval of the next frame of display picture.
And step two, after the error rate of the data signal of one frame of picture is detected, judging whether the error rate is greater than a preset value, and if so, increasing the amplitude level of the data signal of the next frame of picture.
Specifically, for example, M is an arbitrary integer greater than or equal to 1 when detecting the error rate of the mth frame picture data signal.
Firstly, according to a pre-stored correspondence table between amplitude levels and error rate intervals and the amplitude level of the data signal of the Mth frame picture, the maximum error rate in the error rate interval corresponding to the amplitude level is obtained. Wherein each amplitude level corresponds to a set of maximum and minimum voltage values.
And then, when the error rate of the data signal of the M frame picture is detected to be a first error rate, and the first error rate is larger than the maximum error rate in the error rate interval corresponding to the amplitude level of the data signal of the M frame picture, increasing the amplitude level of the data signal of the M +1 frame picture.
And thirdly, when the error rates of the data signals of the continuous N frames (N is more than or equal to 5 and less than or equal to 10 according to the specific situation and N is specifically taken as a value) are all smaller than the first error rate after the M frame, the amplitude level of the data signals of the M +1 frame is lowered by one level to be used as the amplitude level of the data signals of the M + N +1 frame. The value of N can be specifically set according to specific situations.
In this step, for example, when the amplitude level of the data signal of the M-th frame picture is L2 and it is detected that the error rate of the data signal of the M-th frame picture is greater than the maximum error rate of the error rate section corresponding to the amplitude level L2, the amplitude level of the data signal of the M + 1-th frame picture is adjusted to L3, and thus the error rates of the data signals of N consecutive frames pictures after the M-th frame picture are all smaller than the first error rate of the data signal of the M-th frame picture, which indicates that the interference signal is attenuated, the amplitude level of the data signal of the M + N + 1-th frame picture can be adjusted to L2.
And step four, detecting whether the amplitude level of the data signal of the M + N +1 th frame picture is the lowest level, if not, detecting that the error rate of the data signal of each continuous N frame picture is smaller than the error rate of the data signal of the previous frame picture of the N frame pictures after the M + N frame picture, and reducing the amplitude of the data signal of the next frame picture of the N frame pictures by one level until the amplitude level is reduced to the lowest level in the prestored amplitude levels.
Specifically, referring to the example in step three again, the amplitude level of the data signal of the M + N +1 th frame is L2, at this time, when the error rates of the data signals of the N frames after the M + N frame are continuously obtained and are all smaller than the error rate of the data signal of the frame of the M + N frame, the amplitude level of the data signal of the M +2N +1 th frame is adjusted to L1, at this time, the adjustment of the current amplitude level is ended until the error rate of the data signal of a certain frame is found to increase, and the adjustment is continued according to the above steps. Of course, in this step, the amplitude level of the data signal in the M + N +1 th frame is the lowest level, and the adjustment of the amplitude level is also stopped until the error rate of the data signal in a certain frame is found to increase, and the adjustment is continued in accordance with the above-described steps.
The display method of the embodiment may further include: judging whether the data signal transmitted by the time schedule controller to the source driver is locked or not; if the data signal is not locked, setting the data signal to the ground, and adjusting the amplitude level of the data signal to the highest level in the prestored amplitude levels.
The embodiment also provides a display method, which comprises the following steps: detecting the error rate of data signals transmitted by the source driver to each frame of picture in real time by the time sequence controller; when detecting that the error rate of the data signal of the Mth frame picture is greater than the error rate of the data signal of the M-1 frame picture, increasing the amplitude level of the data signal of the M +1 frame picture; and when detecting that the error rate of the data signal of each frame of the continuous N frames of pictures is less than or equal to the error rate of the data signal of the previous frame of pictures after the Mth frame of pictures, reducing the amplitude level of the data signal of the M + N +1 th frame of pictures; wherein M is more than or equal to 2; n is more than or equal to 5 and less than or equal to 10.
Example 3:
as shown in fig. 2, the present embodiment provides a display device which can perform display by the method of embodiment 1 or 2; the display device includes: the device comprises a time schedule controller, a source electrode driver, an error rate detection module and an amplitude adjustment module; the error rate detection module is used for detecting the error rate of a data signal transmitted to the source electrode driver by the time sequence controller in real time; the amplitude adjustment module is used for increasing the amplitude level of the data signal of the M +1 th frame when detecting that the error rate of the data signal of the M & ltth & gt frame is a first error rate and the first error rate is greater than a preset value; when the error rates of the data signals of the continuous N frames of pictures are all smaller than the first error rate after the M frame of picture is detected, the amplitude level of the data signals of the M + N +1 frame of picture is reduced; wherein M is more than or equal to 1; n is more than or equal to 5 and less than or equal to 10.
The display device provided in this embodiment detects the error rate of the data signal of each frame through the error rate detection module, and adjusts the amplitude level of the data signal in real time, so as to improve the interference of the interference signal to the display screen.
The display device in this embodiment further includes: the device comprises a storage module and an acquisition module; wherein the content of the first and second substances,
the storage module is used for storing a corresponding relation table between the amplitude grade and the error rate interval.
The obtaining module is used for obtaining the maximum error rate in the error rate interval corresponding to the amplitude grade according to the corresponding relation table of the amplitude grade and the error rate interval pre-stored in the storage module and the amplitude grade of the data signal of the Mth frame picture.
At this time, the amplitude adjustment module is specifically configured to increase the amplitude level of the data signal of the M +1 th frame when it is detected that the error rate of the data signal of the mth frame is a first error rate, and the first error rate is greater than a maximum error rate in an error rate interval corresponding to the amplitude level of the data signal of the mth frame; and when the data signals of the N continuous frames are detected to be smaller than the first error rate after the M frame, reducing the amplitude level of the data signal of the M +1 frame by one level to be used as the amplitude level of the data signal of the M + N +1 frame.
The display device in this embodiment may further include an amplitude level determination module, where the amplitude level determination module is configured to determine whether the amplitude level of the data signal is the lowest level and/or the highest level in prestored amplitude levels.
At this time, the amplitude adjusting module is further configured to, after detecting that the error rate of the data signal of each consecutive N-th frame picture is less than the error rate of the data signal of the frame picture preceding the M + N-th frame picture after detecting that the amplitude level of the data signal of the M + N + 1-th frame picture is not the lowest level of the pre-stored amplitude levels, decrease the amplitude of the data signal of the frame picture succeeding the N-th frame picture by one level until the amplitude level is decreased to the lowest level of the pre-stored amplitude levels.
The display device in this embodiment further includes: and the locking judging module is used for judging whether the data signals transmitted to the source driver by the time sequence controller are locked or not.
The amplitude adjusting module is further configured to set the data signal to ground when the data signal is not locked by the lock determination module, and adjust the amplitude level of the data signal to a highest level among pre-stored amplitude levels.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A display method, comprising:
detecting the error rate of data signals transmitted by the source driver to each frame of picture in real time by the time sequence controller;
when the error rate of the data signal of the M +1 th frame is detected to be a first error rate and the first error rate is greater than a preset value, increasing the amplitude level of the data signal of the M +1 th frame; and the number of the first and second groups,
when the error rates of the data signals of the continuous N frames of pictures are all smaller than the first error rate after the M frame of picture is detected, the amplitude level of the data signals of the M + N +1 frame of picture is reduced; wherein M is more than or equal to 1; n is more than or equal to 5 and less than or equal to 10;
the step of increasing the amplitude level of the data signal of the (M + 1) th frame when detecting that the error rate of the data signal of the (M) th frame is a first error rate and the first error rate is greater than a preset value includes:
acquiring the maximum bit error rate in the bit error rate interval corresponding to the amplitude grade according to a prestored corresponding relation table between the amplitude grade and the bit error rate interval and the amplitude grade of the data signal of the Mth frame picture;
and when detecting that the error rate of the data signal of the M frame picture is a first error rate and the first error rate is greater than the maximum error rate in an error rate interval corresponding to the amplitude level of the data signal of the M frame picture, increasing the amplitude level of the data signal of the M +1 frame picture.
2. The display method according to claim 1, wherein the step of lowering the amplitude level of the data signal of the M + N +1 frame picture when it is detected that the error rate of the data signal of consecutive N frame pictures after the M frame picture is less than the first error rate comprises:
and when the data signals of the N continuous frames are detected to be smaller than the first error rate after the M frame, reducing the amplitude level of the data signal of the M +1 frame by one level to be used as the amplitude level of the data signal of the M + N +1 frame.
3. The display method according to claim 2, wherein if the amplitude level of the data signal of the M + N +1 th frame is not the lowest level among the pre-stored amplitude levels, the method further comprises:
after detecting the M + N frame picture, if the error rate of the data signal of each continuous N frame picture is less than the error rate of the data signal of the previous frame picture of the N frame picture, the amplitude of the data signal of the next frame picture of the N frame picture is reduced by one level until the amplitude level is reduced to the lowest level in the prestored amplitude levels.
4. The display method according to claim 1, wherein the method further comprises:
judging whether the data signal transmitted by the time schedule controller to the source driver is locked or not;
if the data signal is not locked, setting the data signal to the ground, and adjusting the amplitude level of the data signal to the highest level in the prestored amplitude levels.
5. The method of claim 1, wherein the data signal transmitted by the timing controller to the source driver is transmitted in a P2P transmission manner.
6. A display device, comprising: a timing controller and a source driver, wherein the display device further includes:
the error rate detection module is used for detecting the error rate of the data signal transmitted to the source electrode driver by the time sequence controller in real time for each frame of picture;
the amplitude adjustment module is used for increasing the amplitude level of the data signal of the M +1 th frame when the error rate of the data signal of the M +1 th frame is detected to be a first error rate and the first error rate is greater than a preset value; and the number of the first and second groups,
when the error rates of the data signals of the continuous N frames of pictures are all smaller than the first error rate after the M frame of picture is detected, the amplitude level of the data signals of the M + N +1 frame of picture is reduced; wherein M is more than or equal to 1; n is more than or equal to 5 and less than or equal to 10; the display device further includes: the device comprises a storage module and an acquisition module; wherein the content of the first and second substances,
the storage module is used for storing a corresponding relation table of the amplitude grade and the error rate interval;
the obtaining module is used for obtaining the maximum bit error rate in the bit error rate interval corresponding to the amplitude grade according to the corresponding relation table of the amplitude grade and the bit error rate interval pre-stored in the storage module and the amplitude grade of the data signal of the Mth frame picture;
the amplitude adjustment module is specifically configured to increase the amplitude level of the data signal of the M +1 th frame when it is detected that the error rate of the data signal of the mth frame is a first error rate, and the first error rate is greater than a maximum error rate in an error rate interval corresponding to the amplitude level of the data signal of the mth frame; and when the data signals of the N continuous frames are detected to be smaller than the first error rate after the M frame, reducing the amplitude level of the data signal of the M +1 frame by one level to be used as the amplitude level of the data signal of the M + N +1 frame.
7. The display device according to claim 6, further comprising:
the amplitude level judging module is used for judging whether the amplitude level of the data signal is the lowest level and/or the highest level in the prestored amplitude levels;
the amplitude adjusting module is further configured to, after detecting the M + N frame picture, reduce the error rate of the data signal of each consecutive N frame pictures to be less than the error rate of the data signal of a picture preceding the N frame picture after detecting that the amplitude level of the data signal of the M + N +1 th frame picture is not the lowest level of the prestored amplitude levels until the amplitude level is reduced to the lowest level of the prestored amplitude levels.
8. The display device according to claim 6, further comprising:
the locking judging module is used for judging whether the data signals transmitted to the source electrode driver by the time sequence controller are locked or not;
the amplitude adjusting module is further configured to set the data signal to ground when the data signal is not locked by the lock determination module, and adjust the amplitude level of the data signal to a highest level among pre-stored amplitude levels.
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| CN101770739A (en) * | 2008-12-29 | 2010-07-07 | 东部高科股份有限公司 | Display and communication method thereof |
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| CN101770739A (en) * | 2008-12-29 | 2010-07-07 | 东部高科股份有限公司 | Display and communication method thereof |
| CN102542974A (en) * | 2010-12-28 | 2012-07-04 | 硅工厂股份有限公司 | Method and apparatus for transmitting data between timing controller and source driver, having bit error rate test function |
| US8410818B1 (en) * | 2012-02-14 | 2013-04-02 | Taiwan Semiconductor Manufacturing Co., Ltd. | High speed communication interface with an adaptive swing driver to reduce power consumption |
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