Display device, timing controller and signal processing method thereof

Abstract

The application discloses a display device, a timing controller and a signal processing method thereof. The signal processing method comprises the following steps: detecting whether the preset voltage of a data signal in each unit length data segment is dithered; performing redundancy check on a data segment output by an output end and a data segment received by a receiving end when the preset voltage of the data signal is dithered, and capturing a template data in the data segment; performing data matching between the template data and the dithered data signal when the redundancy check is normal; and providing the data segment after the data matching to the receiving end. The application aims to solve the influence of electromagnetic interference on display data transmission, and processes the transmitted display data through the above signal processing method, so that the transmitted display signal waveform can be normally received by the receiving end within an effective time, and the display device can be normally displayed.

Description

Technical Field

[0001] This application relates to the field of signal processing technology, and in particular to a display device, a timing controller, and a signal processing method thereof. Background Technology

[0002] With societal development, electronic devices have become increasingly prevalent in people's lives. While bringing convenience, they also present some problems. For instance, when a mobile phone is in a call and held close to a display screen, the screen may flicker. This is primarily because the electromagnetic energy emitted by the phone interferes with the normal signals transmitted through the display. Taking GSM phones as an example, the electromagnetic energy emitted by GSM phones at frequencies around 900MHz can affect the display driver circuitry, generating periodic interference signals and causing display abnormalities.

[0003] In existing technologies, signal enhancement is performed on the display signal when it is subjected to electromagnetic interference to resist the interference and ensure normal display. However, signal enhancement increases the risks associated with radio frequency testing. Summary of the Invention

[0004] In view of the above problems, the purpose of this application is to provide a display device, a timing controller and a signal processing method thereof, which improves the electromagnetic interference resistance of the display device while reducing the risk of radio frequency testing.

[0005] According to one aspect of this application, a signal processing method is provided, characterized in that it includes:

[0006] Detect whether the preset voltage fluctuates;

[0007] When the preset voltage jitter occurs, redundancy checks are performed on the currently output data segment and the currently received data segment, and a template data is captured within the currently received data segment.

[0008] When the redundancy check is normal, the template data is matched with the data signal received when jitter occurs.

[0009] The data segment after successful data matching is provided to the receiving end.

[0010] Optionally, the signal processing method further includes:

[0011] When a redundancy check fails, the currently received data segment is corrected based on the currently output data segment, and after the data correction, the template data is matched with the data signal received when jitter occurs.

[0012] Optionally, the signal processing method further includes:

[0013] If a data match fails, the next template data is captured within the currently received data segment to match the data signal received when jitter occurs.

[0014] Optionally, the signal processing method further includes:

[0015] Within a data segment of a unit length, n template data points are pre-selected and extracted, where n is a positive integer.

[0016] The template data is a valid data signal without jitter, and the capture position of the template data is the center position of the data segment, or the center position moved forward by a preset length, or the center position moved backward by a preset length.

[0017] Optionally, data matching refers to whether the jittered data signal falls within the range of the template data. If so, the matching is successful, and the jittered data signal is replaced with the template data.

[0018] According to another aspect of this application, a timing controller is provided to provide a data segment to a receiving end, comprising: a detection unit for detecting whether the preset voltage of the source driver jitters; and a processing unit for performing redundancy checks on the currently output data segment and the currently received data segment when the preset voltage jitters, capturing a template data within the currently received data segment, and performing data matching between the template data and the data signal received when jitter occurs when the redundancy check is normal, and providing the data segment after successful data matching to the receiving end.

[0019] Optionally, the processing unit may also perform data correction on the currently received data segment based on the currently output data segment when the redundancy check fails, and perform data matching between the template data and the data signal received when jitter occurs after data correction; and / or the processing unit may also capture the next template data in the currently received data segment to perform data matching with the data signal received when jitter occurs when data matching fails.

[0020] Optionally, the processing unit pre-fetches n template data within a data segment of unit length, where n is a positive integer.

[0021] Alternatively, the template data is a valid data signal without jitter, and the capture position of the template data is the center position of the data segment, or the center position moved forward by a preset length, or the center position moved backward by a preset length.

[0022] Optionally, data matching refers to whether the jittered data signal falls within the range of the template data. If so, the matching is successful, and the jittered data signal is replaced with the template data.

[0023] According to another aspect of this application, a display device is provided, including the timing controller as described above, or a signal processing device that performs the signal processing method as described above.

[0024] The display device, timing controller, and signal processing method provided in this application detect whether the preset voltage jitters. When the preset voltage jitters, redundancy checks are performed on the currently output and currently received data segments. A template data is captured from the currently received data segment. When the redundancy check is normal, the template data is matched with the received data signal when jitter occurred. The matched data segment is then provided to the receiving end. This ensures that the transmitted display signal waveform can be normally received by the receiving end within the effective time, thereby mitigating the impact of electromagnetic interference on display data transmission and guaranteeing normal display operation.

[0025] Furthermore, in the embodiments of this application, multiple data signals at and near the center of the data segment are selected as template data because the quality of the data signals in this location is relatively high, which can reduce the impact of electromagnetic interference on the display device. This also allows for higher matching efficiency. Attached Figure Description

[0026] The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings, in which:

[0027] Figure 1 A schematic diagram illustrating the principle of a signal processing method for a display device is shown.

[0028] Figure 2 A schematic flowchart of a signal processing method for a display device according to an embodiment of this application is shown;

[0029] Figure 3 A schematic diagram of a data segment of unit length in a signal processing method of a display device according to an embodiment of this application is shown;

[0030] Figure 4 A schematic diagram of data correction in a signal processing method of a display device according to an embodiment of this application is shown;

[0031] Figure 5 A schematic diagram of the structure of a timing controller for a display device according to an embodiment of this application is shown. Detailed Implementation

[0032] Various embodiments of the invention will now be described in more detail with reference to the accompanying drawings. In the various drawings, the same elements are indicated by the same or similar reference numerals. For clarity, the various parts in the drawings are not drawn to scale.

[0033] Figure 1 A schematic diagram illustrating the principle of a signal processing method for a display device is shown.

[0034] This embodiment takes mobile phone interference in electromagnetic interference as an example. When a mobile phone is making a call, the voice signal generated will interfere with the data transmission between the source driver and the timing controller in the display panel, resulting in abnormal display.

[0035] like Figure 1 As shown, when the aforementioned mobile phone interference occurs, the source driver detects a decrease in the quality of the received data signal and pulls down the level of the indicator signal ASC to feed back to the timing controller, thereby triggering the timing controller to increase the amplitude of the transmitted signal to make the signal quality stronger, reduce the impact of electromagnetic interference, and make the display screen normal.

[0036] However, improving the anti-interference capability of the transmitted data signal in the above way will cause changes in the radio frequency noise waveform, thereby introducing risks to radio frequency testing.

[0037] The specific implementation methods of this application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0038] Figure 2 A schematic flowchart of a signal processing method for a display device according to an embodiment of this application is shown. Figure 3 A schematic diagram of a data segment of unit length in a signal processing method of a display device according to an embodiment of this application is shown. Figure 4 A schematic diagram of data correction in a signal processing method of a display device according to an embodiment of this application is shown.

[0039] like Figure 2 As shown, the signal processing method for a display device provided in this application includes the following steps:

[0040] Step S105: Preset n template data to be captured within a unit length data segment. n is a positive integer. In this embodiment, n=3 is used as an example for explanation.

[0041] Step S110: Detect whether the preset voltage is fluctuating. Taking the transmission of display data from the timing controller to the source driver as an example, the timing controller has a P2P (Point-to-Point) interface, and the source driver also has a P2P interface. The P2P interfaces of the timing controller and the source driver are connected via a P2P cable. The display data output by the timing controller is transmitted to the source driver in the form of a package. One package includes multiple UIs (UnitIntervals). Further, the timing controller detects whether the preset voltage in the source driver is fluctuating. For example, when a mobile phone in a call state is close to the display device, the electromagnetic energy emitted by the mobile phone will interfere with the display data transmitted between the timing controller and the source driver, which will cause the preset voltage in the source driver to fluctuate. That is, this step can detect whether the display device is subjected to electromagnetic interference during data transmission.

[0042] In the case of preset voltage jitter, steps S121 and S122 are performed simultaneously, for example.

[0043] Step S121: Perform redundancy verification on the currently output data segment and the currently received data segment. For example, redundancy verification is performed on the currently output data segment of the timing controller and the currently received data segment of the source driver to determine whether an error occurred in the current data segment of the displayed data during transmission. Further, for example, check data is added to the data signal in the data segment output by the timing controller; the check data and the data signal have a certain relationship. If an error occurs in the data segment during transmission, the relationship between the data signal in the data segment received by the source driver and the check data will be disrupted. Redundancy verification determines whether an error occurred in the current data segment during transmission by judging whether the relationship between the data signal and the check data is disrupted.

[0044] Step S122: Capture a template data within the received data segment. The template data mask is the valid data received without jitter. The capture position of the template data mask is the center position of the data segment, or a position moved forward by a preset length from the center position, or a position moved backward by a preset length from the center position. Further, combined with... Figure 3 As shown, in a UI data segment, the captured template data mask can be template data mask1 located at the center of the UI, template data mask2 located at the center of the UI and moved forward by a preset length, or template data mask3 located at the center of the UI and moved backward by a preset length. The upper amplitude of the template data mask is a preset voltage VTH, and the lower amplitude of the template data mask is a preset voltage VTL. The template data signal output is 1 or 0.

[0045] The embodiments of this application select multiple data signals at and near the center of the data segment as template data because the quality of the data signals at this location is relatively high, which can reduce the impact of electromagnetic interference on the display device.

[0046] When redundancy verification is normal, step S130 is executed: the template data is matched with the jittered data signal. Further, data matching refers to whether the jittered data signal falls within the range of the template data. If so, the match is successful, and the jittered data signal is replaced with the template data. That is, after a successful match of the jittered data signal, a signal output with the same mask as the corresponding template data is output. Theoretically, the data signal falls within... Figure 3 The hexagonal region shown represents the area where data matching is required, and the output signal follows the corresponding template data mask. Furthermore, when jitter occurs, the data signal that successfully matches a particular template data is output as the same signal (1 or 0) as that template data. In this embodiment, three template data sets (template data mask1, template data mask2, and template data mask3) are captured to achieve higher matching efficiency.

[0047] When data matching is successful, step S140 is executed: the data segment after successful data matching is provided to the receiving end. For example, the data segment after successful matching is provided to the source driver to ensure that the display screen is normal.

[0048] If data matching fails, return to execution S122 to capture the next template data in the current data segment for subsequent steps. After failing to match the first template data mask1, continue capturing the second template data mask2 and continue the data matching operation.

[0049] In other embodiments, when a redundancy check fails, step S150 is executed: data correction is performed on the received data segment based on the output data segment. After data correction, step S130 is executed, and subsequent steps are performed according to the method described above. Data correction refers to error correction of the data segment received by the source driver based on the data segment output by the timing controller. For example... Figure 4 As shown, for example, a data segment contains 1920 rows of data. When an anomaly is found between the 1000th row of data output by the timing controller TCON and the 1000th row of data received by the source driver, a correction is performed. That is, the 1000th row of data received by the source driver is corrected to match the 1000th row of data output by the timing controller TCON. After that, the data matching operation continues.

[0050] It should be noted that the output terminal in this application is exemplified by a timing controller, and the receiving terminal is exemplified by a source-level driver; however, the implementation of this application is not limited to these examples. The output terminal can also be a main system, and the corresponding receiving terminal can be a timing controller.

[0051] The purpose of this application is to solve the impact of electromagnetic interference on display data transmission. By processing the transmitted display data through the above-mentioned signal processing method, it is ensured that the transmitted display signal waveform can be normally received by the receiving end within the effective time, thereby ensuring the normal display of the display device.

[0052] Figure 5 A schematic diagram of the structure of a timing controller for a display device according to an embodiment of this application is shown.

[0053] like Figure 5 As shown, a timing controller 200 for a display device includes a detection unit 210 and a processing unit 220.

[0054] The detection unit 210 is used to detect whether the preset voltage of the source driver is fluctuating.

[0055] The processing unit 220 is used to perform redundancy checks on the currently output data segment and the currently received data segment when the preset voltage jitter occurs, and to capture a template data in the currently received data segment. When the redundancy check is normal, the template data is matched with the data signal received when jitter occurs, and the data segment after successful data matching is provided to the receiving end.

[0056] Furthermore, when the redundancy check fails, the processing unit 220 corrects the currently received data segment based on the currently output data segment, and after data correction, matches the template data with the data signal received when jitter occurs.

[0057] Furthermore, when data matching fails, the processing unit 220 also captures the next template data in the currently received data segment to match the data signal received when jitter occurs.

[0058] Furthermore, the processing unit 220 pre-captures n template data within a data segment of one unit length, where n is a positive integer.

[0059] Furthermore, the template data is a valid data signal that has not jittered, and the capture position of the template data is the center position of the data segment or the position of the center position moved forward by a preset length or the position of the center position moved backward by a preset length.

[0060] Furthermore, data matching refers to whether the jittered data signal falls within the range of the template data. If so, the match is successful, and the jittered data signal is replaced with the template data.

[0061] This application also provides a display device. The display device includes, for example, the timing controller described above.

[0062] In other embodiments, the display device includes a signal processing device capable of performing the signal processing method described above.

[0063] As described above, these embodiments of the present invention do not exhaustively cover all details, nor do they limit the invention to the specific embodiments described. Clearly, many modifications and variations can be made based on the above description. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to effectively utilize the invention and its modifications. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A signal processing method, characterized in that, include: Detect whether the preset voltage fluctuates; When the preset voltage jitter occurs, redundancy checks are performed on the currently output data segment and the currently received data segment, and a template data is captured within the currently received data segment. When the redundancy check is normal, the template data is matched with the data signal received when jitter occurs. The data segment after successful data matching is provided to the receiving end. It also includes pre-selecting n template data points within a data segment of a unit length, where n is a positive integer. The template data points are valid data signals without jitter. The selection position of the template data points is either the center position of the data segment, or a position moved forward by a pre-selected length from the center position, or a position moved backward by a pre-selected length from the center position. Data matching refers to whether the data signal received when jitter occurs falls within the range of the template data. If so, the matching is successful, and the data signal received when jitter occurs is replaced with the template data.

2. The signal processing method according to claim 1, characterized in that, Also includes: When a redundancy check fails, the currently received data segment is corrected based on the currently output data segment, and after the data correction, the template data is matched with the data signal received when jitter occurs.

3. The signal processing method according to claim 2, characterized in that, Also includes: If a data match fails, the next template data is captured within the currently received data segment to match the data signal received when jitter occurs.

4. A timing controller that provides data segments to a receiving end, characterized in that, include: The detection unit detects whether the preset voltage of the source driver is fluctuating; The processing unit performs redundancy checks on the currently output and currently received data segments when the preset voltage jitter occurs. It then extracts a template data segment from the currently received data segment. If the redundancy check is normal, it performs data matching between the template data and the data signal received during the jitter. Finally, it provides the successfully matched data segment to the receiving end. The processing unit pre-captures n template data points within a unit-length data segment, where n is a positive integer. The template data points are valid data signals without jitter. The capture position of the template data points is either the center position of the data segment, or a position moved forward by a pre-preset length from the center position, or a position moved backward by a pre-preset length from the center position. Data matching refers to whether the data signal received when jitter occurs falls within the range of the template data. If so, the matching is successful, and the data signal received when jitter occurs is replaced with the template data.

5. The timing controller according to claim 4, characterized in that, The processing unit also corrects the currently received data segment based on the currently output data segment when the redundancy check fails, and matches the template data with the data signal received when jitter occurs after the data correction; and / or the processing unit also captures the next template data in the currently received data segment to match the data signal received when jitter occurs when the data matching fails.

6. A display device, characterized in that, It includes a timing controller as described in any one of claims 4-5, or a signal processing device that performs the signal processing method as described in any one of claims 1-3.

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