WO2020087673A1 - Circuit et procédé d'ajustement de signal, et appareil d'affichage - Google Patents

Circuit et procédé d'ajustement de signal, et appareil d'affichage Download PDF

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Publication number
WO2020087673A1
WO2020087673A1 PCT/CN2018/120854 CN2018120854W WO2020087673A1 WO 2020087673 A1 WO2020087673 A1 WO 2020087673A1 CN 2018120854 W CN2018120854 W CN 2018120854W WO 2020087673 A1 WO2020087673 A1 WO 2020087673A1
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WIPO (PCT)
Prior art keywords
data
circuit
type
adjustment
signal
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PCT/CN2018/120854
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English (en)
Chinese (zh)
Inventor
张良
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惠科股份有限公司
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Publication date
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Publication of WO2020087673A1 publication Critical patent/WO2020087673A1/fr

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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
    • G09G3/3611—Control of matrices with row and column drivers

Definitions

  • the present application relates to a signal adjustment circuit and method, and a display device.
  • the data that needs to be transmitted is increasing.
  • differential signals are popularized as a high-speed transmission protocol, and the quality of data transmission is also facing a more severe test.
  • the voltage amplitude the magnitude of the voltage amplitude corresponds to the high level and low level of the data
  • the data can be stored in the register to make the data transmission accurate.
  • a signal adjustment circuit and method, and a display device are provided.
  • a signal adjustment circuit including:
  • the identification circuit is set to obtain the transmitted line data and identify the type of each data
  • An analysis circuit the analysis circuit is connected to the identification circuit, and is configured to analyze a row data type according to each data type, obtain a standard output amplitude corresponding to the row data type, and generate an adjustment instruction;
  • An adjustment circuit which is connected to the analysis circuit, and is configured to adjust the transmission data signal output amplitude according to the adjustment instruction.
  • the identification circuit includes:
  • a storage device the storage device is connected to the analysis circuit, and is configured to acquire the transferred line data, and store or output the line data;
  • a counter device which is respectively connected to the storage device and the analysis circuit, is configured to count each data in the row data, and identify the type of each data.
  • the memory device includes a line memory.
  • the counter device includes a column counter.
  • the analysis circuit includes:
  • An analysis device the analysis device is connected to the identification circuit, and is configured to analyze the line data type according to the type of each data;
  • a search device the search device is connected to the analysis device, and is set to search and feed back a standard output amplitude corresponding to the row data type according to a preset model;
  • a control device which is connected to the search device and is configured to generate an adjustment instruction according to the standard output amplitude.
  • the preset model is an amplitude lookup table.
  • the adjustment circuit includes:
  • a current adjustment device connected to the analysis circuit and configured to adjust the output current according to the adjustment instruction.
  • the current adjustment device is a current source.
  • the line data is pixel data.
  • the type of data includes 0 and 1, where 0 represents a negative level and 1 represents a positive level.
  • a display device including a display panel and a signal adjustment circuit connected to the display panel;
  • the signal adjustment circuit includes:
  • the identification circuit is set to obtain the transmitted line data and identify the type of each data
  • An analysis circuit the analysis circuit is connected to the identification circuit, and is configured to analyze a row data type according to each data type, obtain a standard output amplitude corresponding to the row data type, and generate an adjustment instruction;
  • An adjustment circuit connected to the analysis circuit and configured to adjust the output data signal transmission amplitude according to the adjustment instruction.
  • a signal adjustment method including:
  • the step of acquiring the transmitted line data and identifying the type of each data includes:
  • Each data in the row data is counted to identify the type of each data.
  • the step of analyzing the row data type according to each data type, obtaining the standard output amplitude corresponding to the row data type, and generating an adjustment instruction includes:
  • the adjustment instruction is generated according to the standard output amplitude.
  • the preset model is an amplitude lookup table.
  • the standard output amplitude is set according to the frequency of data type switching.
  • the step of adjusting the transmission amplitude of the output data signal according to the adjustment instruction is specifically:
  • FIG. 1 is a structural diagram of a signal adjustment circuit in an embodiment
  • FIG. 2 is a structural diagram corresponding to one embodiment of the signal adjustment circuit of FIG. 1;
  • FIG. 3 is a structural diagram of a display device according to an embodiment
  • FIG. 4 is a flowchart of a method corresponding to the signal adjustment circuit of FIG. 1 in an embodiment
  • FIG. 5 is a flowchart corresponding to one embodiment of the signal adjustment method of FIG. 4.
  • FIG. 1 is a structural diagram of a signal adjustment circuit in an embodiment.
  • the signal adjustment circuit includes: an identification circuit 100, an analysis circuit 200, and an adjustment circuit 300.
  • the identification circuit 100, the analysis circuit 200 and the adjustment circuit 300 are provided at the data transmission transmitting end.
  • the identification circuit 100, the analysis circuit 200, and the adjustment circuit 300 are provided in the timing controller.
  • the identification circuit 100 is configured to acquire the transmitted line data and identify the type of each data.
  • the analysis circuit 200 is connected to the identification circuit 100, and is configured to analyze the line data type according to each data type, obtain a standard output amplitude corresponding to the line data type, and generate an adjustment instruction.
  • the adjustment circuit 300 is connected to the analysis circuit 200 and is set to adjust the transmission data signal output amplitude according to the adjustment instruction.
  • the identification circuit 100 is connected to the analysis circuit 200, and is configured to acquire and store the line data to be transmitted, identify the type of each data, and output the data and the type of each data to the analysis circuit when the data needs to be transmitted 200.
  • the line data refers to the data of one line in the horizontal direction, specifically refers to the pixel data, and each pixel data has a corresponding data type.
  • the data type can reflect the level state of the pixel data.
  • the specific data types include 0 and 1, where 0 represents negative level and 1 represents positive level. For example, the data type of the first pixel data is 0, the data type of the second pixel data is 0, and the data type of the third pixel data is 1.
  • the analysis circuit 200 is connected to the identification circuit 100, and is configured to analyze the line data type according to the type of each data, obtain a standard output amplitude corresponding to the line data type, and generate an adjustment instruction to control the adjustment circuit to adjust the output Data signal transmission amplitude.
  • different data types correspond to different standard output amplitudes, which can realize dynamic matching.
  • the analysis circuit 200 may sort and integrate the types of each data, analyze the data types in a more regular segment, and obtain row data types. For example, after sorting and integrating by the types of data, the row data type is 01010101.
  • the analysis circuit 200 acquires the standard output amplitude corresponding to the row data type.
  • the model of the row data type and the corresponding standard output amplitude can be established in advance. After acquiring the row data type, the search or Compare the row data types in the preset model to obtain the corresponding standard output amplitude.
  • the preset model may specifically be an amplitude lookup table or other models that can reflect the corresponding relationship. Taking the amplitude look-up table as an example, you can set the following amplitude look-up table; when the data does not find the relevant row data type, you can add the row data type to the amplitude look-up table and obtain its correspondence by operation Standard amplitude.
  • the standard output amplitude may be set according to the frequency of data type switching, for example, according to the frequency of switching between 0 and 1.
  • the frequency of switching between 0 and 1 the frequency of switching between 0 and 1.
  • the frequent frequent switching between 0 and 1 can set the amplitude a to be lower at this time; the amplitude b should be set to be larger after two consecutive 0 or 1 switches.
  • the adjustment circuit 300 is connected to the analysis circuit 200, and is set to dynamically adjust the transmission amplitude of the output data signal according to the adjustment instruction, so that the transmission amplitude of each data meets the standard, and the amplitude will not be set. If it is too large, the EMI (Electromagnetic Interference, electromagnetic interference) radiation effect under each data is guaranteed to be the best; at the same time, automatic adjustment does not require too much manual participation in debugging, saving time and effort.
  • the adjustment circuit 300 may directly adjust the transmission amplitude, or may indirectly adjust the transmission amplitude through other methods.
  • the signal adjustment circuit provided in this embodiment includes an identification circuit 100, an analysis circuit 200, and an adjustment circuit 300.
  • the identification circuit 100 identifies the type of each data.
  • the analysis circuit 200 analyzes the row data type according to the type of each data to obtain the row data type.
  • Corresponding to the standard output amplitude dynamic matching is achieved, and an adjustment command is generated, so that the adjustment circuit 300 dynamically adjusts the output data signal transmission amplitude according to the adjustment command, so that the transmission amplitude of each data meets the standard, and the amplitude is not It will be set too large, and it also guarantees the best EMI radiation effect under each data; at the same time, automatic adjustment does not require too much manual participation in debugging, saving time and effort.
  • FIG. 2 is a structural diagram of one embodiment of the signal adjustment circuit of FIG. 1.
  • the identification circuit 100 includes the storage device 101 and the counter device 102.
  • the storage device 101 is connected to the analysis circuit 200, and is configured to acquire the transferred line data and store or output the line data. Specifically, the storage device 101 acquires and stores line data to be transferred, and outputs the data and the type of each data to the analysis circuit 200 when the data needs to be transmitted. Among them, the storage device 101 may be a line memory.
  • the counter device 102 is connected to the storage device 101 and the analysis circuit 200, respectively, and is configured to count each data in the line data and identify the type of each data.
  • the counter device 102 may be a column counter.
  • the analysis circuit 200 includes an analysis device 201, a search device 202, and a control device 203.
  • the analysis device 201 is connected to the identification circuit 100 and is configured to analyze the line data type according to the type of each data. Specifically, the analyzing device 201 may obtain the row data type by sorting and integrating the types of the data, and taking a more regular data type segment analysis.
  • the search device 202 is connected to the analysis device 201, and is set to search and feed back the standard output amplitude corresponding to the row data type according to a preset model. Specifically, the searching device 202 may pre-establish a model of the row data type and the corresponding standard output amplitude, and after acquiring the row data type, find or compare the row data type in the preset model to obtain the corresponding standard The amplitude is output and fed back to the control device 203.
  • the control device 203 is connected to the search device 202, and is set to generate an adjustment instruction according to the standard output amplitude, thereby implementing dynamic control of the adjustment circuit 300 according to the standard output amplitude.
  • the adjustment circuit 300 includes a current adjustment device 301.
  • the current adjustment device 301 is connected to the analysis circuit 200, and is set to adjust the output current according to the adjustment instruction, so as to adjust the output amplitude.
  • the current adjustment device 301 is a current source.
  • the output amplitude is increased, so that the switching speed of the transmission between differential pair data is accelerated, so that the larger the amplitude of the data rise in the same time
  • the reverse amplitude will also be smaller, the transmission amplitude of each data meets the standard, and the amplitude will not be set too large, which also guarantees the best EMI radiation effect under each data.
  • the signal adjustment circuit recognizes the type of each data through the counter device 102, the analysis device 201 analyzes the line data type according to the type of each data, and the search device 202 obtains the standard output amplitude corresponding to the line data type to achieve dynamic Matching, and the control device 203 generates an adjustment instruction, so that the current adjustment device 301 dynamically adjusts the output current according to the adjustment instruction, thereby adjusting the transmission amplitude of the output data signal, so that the transmission amplitude of each data meets the standard, and the amplitude It will not be set too large, and it also guarantees the best EMI radiation effect under each data. At the same time, automatic adjustment does not require too much manual participation in debugging, saving time and effort.
  • This embodiment provides a display device including a display panel and the signal adjustment circuit described in the above embodiment.
  • the signal adjustment circuit is connected to the display panel.
  • the adjustment circuit 300 of the signal adjustment circuit 10 is connected to the display drive circuit 400 on the display panel 20, wherein the display drive circuit 400 drives the display element according to the received data signal For display. Therefore, through the signal adjustment circuit 10, it is finally possible to ensure that each piece of data displayed is correctly received by the display driving circuit 400, thereby improving the reliability of the display panel display.
  • the display panel in this embodiment may be any of the following: liquid crystal display panel, OLED display panel, QLED display panel, twisted nematic (TN) or super twisted nematic (Super Twisted Nematic, STN) type, plane switching (In-Plane Switching, IPS) type, Vertical Alignment (VA) type, curved type panel, or other display panel.
  • TN twisted nematic
  • STN super twisted nematic
  • IPS plane switching
  • VA Vertical Alignment
  • curved type panel or other display panel.
  • FIG. 3 is a flowchart of a method corresponding to the signal adjustment circuit of FIG. 1 in an embodiment.
  • the signal adjustment method includes steps S101, S102, and S103.
  • the details are as follows:
  • step S101 the transferred line data is acquired, and the type of each data is identified.
  • step S101 acquires and stores line data to be transferred, identifies the type of each data, and outputs the data and the type of each data when the data needs to be transmitted.
  • step S102 the line data type is analyzed according to the type of each data, the standard output amplitude corresponding to the line data type is obtained, and an adjustment instruction is generated.
  • step S102 analyzes the row data type according to each data type, obtains the standard output amplitude corresponding to the row data type, and generates an adjustment instruction so that subsequent steps can adjust the output data signal transmission amplitude according to the adjustment instruction .
  • different data types correspond to different standard output amplitudes, which can realize dynamic matching.
  • step S102 may obtain the row data type by sorting and integrating various data types and analyzing the more regular data type segments.
  • a model of the row data type and the corresponding standard output amplitude may be established in advance. After acquiring the row data type, by searching or comparing the row data type in the preset model, the The corresponding standard output amplitude.
  • the preset model is an amplitude lookup table.
  • the standard output amplitude may be set according to the frequency of data type switching, for example, according to the frequency of switching between 0 and 1.
  • step S103 the output data signal transmission amplitude is adjusted according to the adjustment instruction.
  • step S103 dynamically adjusts the transmission amplitude of the output data signal according to the adjustment instruction, so that the transmission amplitude of each data meets the standard, and the amplitude will not be set too large, which also ensures that each data
  • the best EMI radiation effect is the same; at the same time, automatic adjustment does not require too much manual participation in debugging, saving time and effort.
  • the transmission amplitude can be adjusted directly, or the transmission amplitude can be adjusted indirectly through other methods.
  • the signal adjustment method provided in this embodiment, by identifying the type of each data, analyzing the row data type and obtaining the standard output amplitude corresponding to the row data type, to achieve dynamic matching, and generating corresponding adjustment instructions to dynamically adjust the transmission amplitude,
  • the transmission amplitude of each data meets the standard, and the amplitude will not be set too large, which also guarantees the best EMI radiation effect under each data; at the same time, automatic adjustment does not require too much manual participation in debugging ,save time and energy.
  • FIG. 4 is a circuit flowchart of one embodiment of the signal adjustment method of FIG. 3.
  • step S101 includes S1011 and S1012.
  • step S1011 the transferred line data is acquired, and the line data is stored or output.
  • step S1012 each data in the line data is counted to identify the type of each data.
  • step S102 includes S1021 and S1022.
  • step S1021 the row data type is analyzed according to the type of each data.
  • step S1022 the standard output amplitude corresponding to the row data type is searched for and fed back according to the preset model.
  • step S1023 an adjustment instruction is generated according to the standard output amplitude.
  • step S103 is specifically S1031.
  • step S1031 the output current is adjusted according to the adjustment instruction.
  • the signal adjustment method provided in this embodiment recognizes the type of each data, analyzes the line data type, and finds and obtains the standard output amplitude corresponding to the line data type according to a preset model to achieve dynamic matching and generates corresponding adjustment instructions to Make the current source dynamically adjust the output current according to the adjustment instruction, so as to achieve the adjustment of the transmission amplitude, so that the transmission amplitude of each data meets the standard, and the amplitude will not be set too large, and also guarantees each data
  • the best EMI radiation effect is achieved; at the same time, automatic adjustment does not require too much manual participation in debugging, saving time and effort.
  • steps in the flowchart of the above embodiment are displayed sequentially according to the arrows, the steps are not necessarily executed in the order indicated by the arrows. Unless clearly stated in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least some of the steps in FIGS. 3 and 4 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but may be executed at different times. These sub-steps or The execution order of the stages does not necessarily need to be performed sequentially, but may be executed in turn or alternately with other steps or sub-steps of the other steps or at least a part of the stages.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Dc Digital Transmission (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

L'invention concerne un circuit de configuration de signal comprenant : un circuit de reconnaissance configuré de façon à acquérir des données de rangée transmises et reconnaître un type de chaque donnée ; un circuit d'analyse, le circuit d'analyse étant connecté au circuit de reconnaissance et configuré de façon à analyser un type de données de rangée selon un type de chaque donnée, acquérir une amplitude de sortie standard correspondant à chaque type de données de rangée, et générer une instruction de réglage ; et un circuit de réglage, le circuit de réglage étant connecté au circuit d'analyse et configuré de façon à ajuster une amplitude de transfert de signal de données de sortie selon l'instruction de réglage.
PCT/CN2018/120854 2018-10-30 2018-12-13 Circuit et procédé d'ajustement de signal, et appareil d'affichage WO2020087673A1 (fr)

Applications Claiming Priority (2)

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CN201811278571.6A CN109272953B (zh) 2018-10-30 2018-10-30 信号调整电路及方法、显示装置
CN201811278571.6 2018-10-30

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CN101656049B (zh) * 2008-08-18 2012-11-21 北京京东方光电科技有限公司 背光源亮度控制装置及其方法
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CN1123577A (zh) * 1993-04-05 1996-05-29 西尔拉斯逻辑公司 液晶显示器中串扰的补偿方法和设备
CN101334974A (zh) * 2007-06-26 2008-12-31 Lg.菲力浦Lcd株式会社 液晶显示器及其驱动方法
CN103839522A (zh) * 2012-11-21 2014-06-04 群康科技(深圳)有限公司 可降低显示串扰的驱动控制器、显示面板装置及驱动方法
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