WO2015010395A1 - 显示器同步信号检测方法及检测装置、显示器 - Google Patents

显示器同步信号检测方法及检测装置、显示器 Download PDF

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Publication number
WO2015010395A1
WO2015010395A1 PCT/CN2013/087243 CN2013087243W WO2015010395A1 WO 2015010395 A1 WO2015010395 A1 WO 2015010395A1 CN 2013087243 W CN2013087243 W CN 2013087243W WO 2015010395 A1 WO2015010395 A1 WO 2015010395A1
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standard
signal frequency
synchronization signal
frequency
vertical
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English (en)
French (fr)
Inventor
赵家庆
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BOE Technology Group Co Ltd
Beijing BOE Vision Electronic Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Vision Electronic Technology Co Ltd
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Priority to US14/369,472 priority Critical patent/US9437164B2/en
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006Details of the interface to the display terminal
    • G09G5/008Clock recovery
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/12Synchronisation between the display unit and other units, e.g. other display units, video-disc players
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/22Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • G09G5/30Control of display attribute

Definitions

  • the invention belongs to the technical field of display manufacturing, and particularly relates to a detection device and a display for detecting a synchronous signal of a display. Background technique
  • the sync signal frequency of the display ie the vertical sync signal (V-sync) frequency and the horizontal sync signal (H-sync) frequency, are important parameters of the display, the former being equal to the brush frequency and the latter being also related to the resolution.
  • V-sync vertical sync signal
  • H-sync horizontal sync signal
  • the horizontal synchronizing signal frequency detection is usually detected simultaneously with the vertical signal frequency detection.
  • the synchronizing signal detection includes: Step 1: establishing a standard synchronizing signal (including a standard vertical synchronizing signal) in the memory Frequency and standard horizontal sync signal frequency) table, in the standard sync signal table, the standard horizontal sync signal frequency is related to the standard vertical sync signal frequency and resolution; Step 2, detecting the horizontal sync signal frequency and vertical sync of the display Signal frequency; Step 3: Compare the detected synchronizing signal frequency with the standard synchronizing signal frequency in the standard synchronizing signal table one by one, when the horizontal synchronizing signal frequency and the vertical synchronizing signal frequency simultaneously satisfy the error range allowed by the standard synchronizing signal frequency , can be regarded as finding the correct synchronization signal frequency, so as to get the resolution of the display, the detection ends; If the correct synchronization signal frequency is not found in the table, it indicates that the display synchronization has a problem.
  • the inventors of the present application found that at least the following problems exist in the prior art:
  • the standard vertical signal frequency and the standard horizontal synchronization signal frequency are established in the same table, the table
  • the capacity is large and the ordering is irregular and complicated, so when the vertical and horizontal synchronizing signal frequencies of the display are compared with the table, the process is cumbersome and slow.
  • the technical problem to be solved by the present invention includes, for the deficiencies of the above-mentioned display synchronization signal detecting method, a method, a detecting device and a display which can quickly and accurately detect a synchronization signal of a display.
  • the technical solution adopted to solve the technical problem of the present invention is a display synchronization signal detecting method, which comprises the following steps:
  • Obtaining a true vertical sync signal frequency of the display and comparing the true vertical sync signal frequency with a standard vertical sync signal frequency in a pre-stored standard sync signal table, and selecting from the pre-stored standard sync signal table with the real a standard vertical synchronizing signal frequency having a difference between the vertical synchronizing signal frequencies within a first error range as a candidate vertical synchronizing signal frequency, wherein the standard synchronizing signal table stores the standard vertical synchronizing signal frequency and is perpendicular to the standard a standard horizontal synchronization signal sub-table corresponding to the synchronization signal frequency, the standard horizontal synchronization signal sub-table storing all standard horizontal synchronization signal frequencies and resolutions corresponding to the standard vertical synchronization signal frequency;
  • the standard horizontal synchronizing signal frequency which is within the second error range from the difference of the true horizontal synchronizing signal frequency is selected as the correct horizontal synchronizing signal frequency.
  • the method further comprises: storing the pre-stored standard synchronizing signal table in a memory.
  • the first error range is greater than -1 Hz and less than 1 ⁇ .
  • the second error range is greater than -1 Hz and less than 1 ⁇ .
  • the first error range is reduced.
  • the candidate vertical sync signal frequency selects the candidate vertical sync signal frequency again.
  • the method further comprises: when the correct horizontal synchronizing signal frequency is not found, adding a standard horizontal synchronizing signal frequency to the standard horizontal synchronizing signal table to obtain a new standard horizontal synchronizing signal sub-table. It is further preferred that the correct horizontal synchronizing signal frequency is obtained based on the standard horizontal synchronizing frequency in the new standard horizontal synchronizing signal sub-table.
  • the standard vertical synchronizing signal frequency in the standard vertical synchronizing signal table is between 55 Hz and 76 Hz, and the value is an integer.
  • a display synchronization signal detecting apparatus comprising: a storage unit for storing a standard synchronization signal table, wherein the standard synchronization signal table stores a standard vertical synchronization signal a frequency and a standard horizontal synchronizing signal sub-table corresponding to the standard vertical synchronizing signal frequency, the standard horizontal synchronizing signal sub-table storing all standard horizontal synchronizing signal frequencies and resolutions corresponding to a standard vertical synchronizing signal frequency;
  • a true vertical sync signal frequency detecting unit for detecting a true vertical sync signal frequency of the display
  • a true horizontal synchronizing signal frequency detecting unit for detecting a true horizontal synchronizing signal frequency of the display
  • a candidate vertical synchronizing signal frequency acquiring unit for acquiring a standard vertical synchronizing signal frequency which is within a first error range from a true vertical synchronizing signal frequency as a candidate vertical synchronizing signal frequency;
  • a correct horizontal synchronizing signal frequency acquiring unit for comparing a standard horizontal synchronizing signal frequency in a standard horizontal synchronizing signal sub-table corresponding to the candidate vertical synchronizing signal frequency with the true horizontal synchronizing signal frequency
  • the standard horizontal synchronizing signal frequency whose difference between the two is within the second error range is obtained as the correct horizontal synchronizing signal frequency, thereby obtaining the resolution of the display.
  • the present invention also provides a display comprising the above-described display synchronization signal detecting device.
  • Display synchronization signal detection method and device and display of the invention adopt first After detecting the frequency of the candidate vertical synchronizing signal, the correct horizontal synchronizing signal frequency is detected, and finally the resolution of the display is obtained, so that the synchronization signal of the display can be detected quickly and accurately.
  • FIG. 1 is a flow chart showing a method for detecting a synchronization signal of a display according to Embodiment 1 of the present invention
  • Fig. 2 is a view showing the configuration of a display synchronizing signal detecting apparatus according to a second embodiment of the present invention. detailed description
  • the embodiment provides a display synchronization signal detection method, which includes the following steps:
  • Step 1 Pre-store a standard synchronization signal table in the memory.
  • the standard synchronization signal table stores a standard vertical synchronization signal frequency and a standard horizontal synchronization signal sub-table corresponding to the standard vertical synchronization signal frequency, and the standard horizontal synchronization signal sub-table stores a frequency corresponding to a standard vertical synchronization signal. All standard horizontal sync signal frequencies and resolutions. As shown in the following procedure:
  • the standard vertical synchronizing signal frequency in the standard synchronizing signal table is between 55 Hz and 76 Hz, and the value of the standard vertical synchronizing signal frequency is an integer.
  • the true vertical synchronizing signal frequency of the general display is in the range of 55 Hz to 76 Hz, and the range of the vertical synchronizing signal frequency can be changed depending on the display.
  • a program with a standard vertical sync signal frequency between 55 Hz and 76 Hz can be written as:
  • V_syncTable[]
  • each standard vertical synchronizing signal frequency in the established synchronizing signal table of the embodiment corresponds to a standard horizontal synchronizing signal sub-table.
  • the standard vertical synchronizing signal frequency of 55 Hz corresponds to H-syncTable-V55. Standard water Flat sync signal subtable.
  • Step 2 Obtain the true vertical synchronizing signal frequency of the display, and compare it with the standard vertical synchronizing signal frequency in the standard synchronizing signal table prestored in step 1, and select the difference from the true vertical synchronizing signal frequency in the first
  • the standard vertical sync signal frequency within the error range is used as the candidate vertical sync signal frequency.
  • a standard vertical synchronizing signal frequency which is different from the true vertical synchronizing signal frequency by more than -1 Hz and less than 1 Hz (first error range) is obtained in the standard synchronizing signal table as a candidate vertical synchronizing signal frequency. It is of course possible to take other error ranges.
  • the first error range taken in this embodiment is greater than -1 Hz and less than 1 Hz only to make the selected candidate vertical synchronizing signal frequency more accurate.
  • Step 3 Obtain the true horizontal synchronization signal frequency of the display, and compare it with the standard horizontal synchronization signal frequency in the standard horizontal synchronization signal sub-table corresponding to the candidate vertical synchronization signal frequency obtained in step 2, to obtain both
  • the standard horizontal sync signal frequency within the second error range is used as the correct horizontal sync signal frequency to obtain the resolution of the display.
  • the standard horizontal synchronizing signal frequency is shown as follows:
  • H SYNCTBL code H_syncTable_V75 []
  • the obtained standard horizontal synchronizing signal frequency is also plural, when the obtained different candidate vertical synchronizing signal frequencies are obtained.
  • the error range is reduced (for example, becomes 0 to 0.5), and the process returns to step 2, and the candidate vertical synchronizing signal frequency is selected again according to the new first error range.
  • the frequency of the standard horizontal synchronizing signal which is greater than -IKHz less than IKHz (second error range) is obtained in the candidate horizontal synchronizing signal frequency as the correct horizontal synchronizing signal frequency.
  • second error range is greater than -IKHz and less than IKHz only to make the selected candidate horizontal synchronization signal frequency more accurate.
  • the correct horizontal sync signal frequency is not found (if the resolution of the detected display is high and not set in the pre-stored standard horizontal sync signal sub-table), then in the standard horizontal sync signal sub-table
  • the standard horizontal sync signal frequency is increased to form a new standard horizontal sync signal sub-table, and the correct horizontal sync signal frequency is obtained according to the standard horizontal sync frequency in the new standard horizontal sync signal sub-table.
  • the candidate horizontal sync signal frequency is obtained by the relationship between the candidate vertical sync signal frequency and resolution, and after this step, the comparison between the candidate horizontal sync signal frequency and the true horizontal sync signal frequency is obtained.
  • the horizontal sync signal frequency if the correct horizontal sync signal frequency is not detected, the new standard horizontal sync signal frequency is added to the standard horizontal sync signal sub-table to continue the detection until the correct horizontal sync signal frequency is detected. .
  • the synchronization signal detecting method of the display provided by the embodiment first detects the frequency of the candidate vertical synchronization signal, and then obtains all the standards corresponding to the vertical synchronization signal frequency according to the correspondence between the vertical synchronization signal frequency and the standard horizontal synchronization signal sub-table. Horizontal sync signal frequency, finally through the true horizontal sync signal frequency and standard The horizontal synchronizing signal frequency is compared to obtain the correct horizontal synchronizing signal frequency, thereby obtaining the resolution of the display, which plays an important role in setting the parameters such as the brush frequency of the display, and at the same time, step-by-step detection.
  • the method of displaying the sync signal is more accurate and faster.
  • Example 2 Example 2:
  • the embodiment provides a display synchronization signal detecting apparatus, which includes: a storage unit for storing a standard synchronization signal table, wherein the standard synchronization signal table stores a standard vertical synchronization signal frequency. And a standard horizontal synchronization signal sub-table corresponding to the standard vertical synchronization signal frequency, preferably, the standard horizontal synchronization signal sub-table stores all standard horizontal synchronization signal frequencies and resolutions corresponding to the standard vertical synchronization signal frequency;
  • a true vertical sync signal frequency detecting unit for detecting a true vertical sync signal frequency of the display
  • a true horizontal synchronizing signal frequency detecting unit for detecting a true horizontal synchronizing signal frequency of the display
  • a candidate vertical synchronizing signal frequency obtaining unit for obtaining a standard vertical synchronizing signal frequency having a difference between a standard vertical synchronizing signal frequency and a true vertical synchronizing signal frequency within a first error range as a candidate vertical synchronizing signal frequency;
  • a correct horizontal synchronizing signal frequency acquiring unit for comparing a standard horizontal synchronizing signal frequency in a standard horizontal synchronizing signal sub-table corresponding to the obtained candidate vertical synchronizing signal frequency with a obtained true horizontal synchronizing signal frequency,
  • the standard horizontal synchronizing signal frequency whose difference between the two is within the second error range is obtained as the correct horizontal synchronizing signal frequency, thereby obtaining the resolution of the display.
  • the display detecting device provided in this embodiment can detect the synchronization signal frequency of the display more quickly and accurately.
  • Example 3
  • the present invention also provides a display comprising the above-described display synchronization signal detecting device.
  • the display of the present invention may be a liquid crystal display panel, a liquid crystal display, a liquid crystal television, an OLED display panel, an OLED display, an OLED television, a mobile phone, a pad or an e-book.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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  • Synchronizing For Television (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

一种显示器同步信号检测方法及检测装置、显示器,本申请的显示器同步信号检测方法,包括取得显示器的真实的垂直同步信号频率,并与预存的标准同步信号表中的标准垂直同步信号频率比较,从中选取与真实的垂直同步信号频率的差在第一误差范围内的标准垂直同步信号频率作为候选的垂直同步信号频率;取得显示器的真实的水平同步信号频率,与上述步骤中取得的候选的垂直同步信号频率所对应的标准水平同步信号子表中的标准水平同步信号频率进行比较,得到两者的差在第二误差范围内的标准水平同步信号频率,作为正确的水平同步信号频率,从而得到显示器的分辨率。可解决现有检测方法步骤繁琐,速度慢的问题。

Description

显示器同步信号检测方法及检测装置、 显示器 技术领域
本发明属于显示器制造技术领域, 具体涉及一种显示器同步 信号检测方法检测装置及显示器。 背景技术
显示器的同步信号频率, 即垂直同步信号 ( V-sync ) 频率和 水平同步信号 (H-sync ) 频率是显示器的重要参数, 前者等于刷 频率, 后者还与分辨率相关。 为了保证上述两信号同步, 首选需 要检测显示器的水平同步信号频率和垂直同步信号频率, 再与显 示器内标准的水平同步信号频率和垂直同步信号频率进行比较, 才可以得到正确的同步信号, 进而实现显示器对图像的显示。
目前, 在进行同步信号检测时, 水平同步信号频率检测通常 与垂直信号频率检测同时进行检测, 具体的说, 同步信号检测包 括: 步骤一、 在存储器中建立一标准同步信号 (包括标准垂直同 步信号频率和标准水平同步信号频率)表, 在所述标准同步信号 表中, 标准水平同步信号频率与标准垂直同步信号频率以及分辨 率是相关的; 步骤二、 检测显示器的水平同步信号频率和垂直同 步信号频率; 步骤三、 将检测到的同步信号频率与标准同步信号 表中的标准同步信号频率逐一进行比较, 当水平同步信号频率和 垂直同步信号频率同时满足标准同步信号频率所允许的误差范围 时, 则可视为找到正确的同步信号频率, 从而得到显示器的分辨 率, 检测结束; 若在表中找不到正确的同步信号频率, 则说明显 示器同步出现问题。 通过上述同步信号的检测方法, 根据检测得 到的显示器的垂直同步信号频率和水平同步信号频率, 进而得到 显示器的分辨率, 该分辨率可以对显示器设置刷频率等参数起到 关键性作用。
本申请的发明人发现现有技术中至少存在如下问题: 将标准 垂直信号频率和标准水平同步信号频率建立在同一个表中, 该表 容量较大且排序无规律、 复杂, 所以在将检测到显示器的垂直和 水平同步信号频率与该表进行比较时, 过程繁瑣, 速度很慢。 发明内容
本发明所要解决的技术问题包括, 针对上述显示器同步信号 检测方法的不足, 提供一种可以快速、 准确的检测显示器的同步 信号的方法及检测装置、 显示器。
解决本发明技术问题所采用的技术方案是一种显示器同步信 号检测方法, 包括如下步骤:
获得显示器的真实的垂直同步信号频率, 并将所述真实的垂 直同步信号频率与预存的标准同步信号表中的标准垂直同步信号 频率比较, 从预存的标准同步信号表中选取与所述真实的垂直同 步信号频率之差在第一误差范围内的标准垂直同步信号频率作为 候选的垂直同步信号频率, 其中, 所述标准同步信号表中存储有 所述标准垂直同步信号频率和与所述标准垂直同步信号频率对应 的标准水平同步信号子表, 标准水平同步信号子表存储有与标准 垂直同步信号频率所对应的所有标准水平同步信号频率和分辨 率;
获得显示器的真实的水平同步信号频率, 将其与上述步骤中 获得的候选的垂直同步信号频率对应的标准水平同步信号子表中 的标准水平同步信号频率进行比较, 从所述标准水平同步信号子 表中选取与所述真实的水平同步信号频率之差在第二误差范围内 的标准水平同步信号频率, 作为正确的水平同步信号频率。
优选的是,所述获得显示器的真实的垂直同步信号频率之前 还包括: 在存储器中存储所述预存的标准同步信号表。
优选的是, 所述第一误差范围为大于 -1Hz且小于 1Ηζ。
优选的是, 所述第二误差范围为大于 -1Hz且小于 1Ηζ。
优选的是, 当所述获得候选的垂直同步信号频率为多个且所 述多个候选的垂直同步信号频率所对应的标准水平同步信号频率 有相同的时, 则缩小所述第一误差范围, 以获得新的第一误差范 围, 并根据所述新的第一误差范围, 再次选取候选的垂直同步信 号频率。
优选的是, 该方法还包括: 当未能找到正确的水平同步信号 频率时, 则在标准水平同步信号表中新增标准水平同步信号频率, 以获得新的标准水平同步信号子表。 进一步优选的是, 根据所述 新的标准水平同步信号子表中的标准水平同步频率, 获得正确的 水平同步信号频率。
进一步优选的是, 所述标准垂直同步信号表中的标准垂直同 步信号频率在 55Hz~76Hz之间, 且其值为整数。
解决本发明技术问题所采用的技术方案是一种显示器同步信 号检测装置, 其包括: 存储单元, 其用于存储一标准同步信号表, 其中, 所述标准同步信号表中存储有标准垂直同步信号频率和与 所述标准垂直同步信号频率对应的标准水平同步信号子表, 标准 水平同步信号子表存储有与一标准垂直同步信号频率对应的所有 标准水平同步信号频率和分辨率;
真实的垂直同步信号频率检测单元, 其用于检测显示器的真 实的垂直同步信号频率;
真实的水平同步信号频率检测单元, 其用于检测显示器的真 实的水平同步信号频率;
候选的垂直同步信号频率获取单元, 其用于获取与与真实的 垂直同步信号频率之差在第一误差范围内的标准垂直同步信号频 率作为候选的垂直同步信号频率;
正确的水平同步信号频率获取单元, 其用于通过将所述候选 的垂直同步信号频率对应的标准水平同步信号子表中的标准水平 同步信号频率与所述真实的水平同步信号频率进行比较, 来获取 两者之差在第二误差范围内的标准水平同步信号频率, 作为正确 的水平同步信号频率, 从而得到显示器的分辨率。
本发明还提供一种显示器, 包括上述的显示器同步信号检测 装置。
本发明的显示器同步信号检测方法和装置以及显示器采用先 检测得到候选的垂直同步信号频率后, 再检测得到正确的水平同 步信号频率, 最终得到显示的分辨率, 故其可以快速、 准确的检 测到显示器的同步信号。 附图说明
图 1为本发明的实施例 1的显示器同步信号检测方法的流程 图; 以及
图 2为本发明的实施例 2的显示器同步信号检测装置的结构 图。 具体实施方式
为使本领域技术人员更好地理解本发明的技术方案, 下面结 合附图和具体实施方式对本发明作进一步详细描述。 实施例 1 :
结合图 1所示,本实施例提供一种显示器同步信号检测方法, 其包括如下步骤:
步骤一、 在存储器中预存一标准同步信号表。
其中, 所述标准同步信号表中存储有标准垂直同步信号频率 和与标准垂直同步信号频率所对应的标准水平同步信号子表, 标 准水平同步信号子表存储有与一标准垂直同步信号频率所对应的 所有标准水平同步信号频率和分辨率。 如下述程序所示:
建立 V-sync table and H-sync table (标准同步信号表 ) 结构 如下:
typedef struct V SYNCTBL {
unsigned int v sync hz;
H SYNCTBL *h_sync_tbl;
char h tbl cnt;
} V_SYNCTBL;
typedef struct H SYNCTBL { unsigned int hsync high khz;
char t— mode;
} H SYNCTBL;
优选地, 所述标准同步信号表中的标准垂直同步信号频率在 55Hz~76Hz之间, 且所述标准垂直同步信号频率的值为整数。 一 般显示器的真实的垂直同步信号频率 55Hz~76Hz这个范围内, 当 然根据显示器的不同也可以改变其垂直同步信号频率的范围。 为 了更好的理解, 以标准垂直同步信号频率的值为 55Hz~76Hz之间 的程序为例可以写成:
VSYNCTBL code V_syncTable[] = {
{ 55, H_syncTable_V55, sizeof(H_syncTable_V55) },
II 55Hz
{ 56, H_syncTable_V56, sizeof(H_syncTable_V56) },
II 56Hz
{ 57, H_syncTable_V57, sizeof(H_syncTable_V57) },
// 56Hz
{ 74, H_syncTable_V74, sizeof(H_syncTable_V74) },
II 74Hz
{ 75, H_syncTable_V75, sizeof(H_syncTable_V75) },
II 75Hz
{ 76, H_syncTable_V76, sizeof(H_syncTable_V76) },
II 76Hz
// END
};
很容易的可以看出本实施例的所建立的同步信号表中的每一 个标准垂直同步信号频率对应一个标准水平同步信号子表, 比如 说 55Hz的标准垂直同步信号频率对应 H— syncTable— V55的标准水 平同步信号子表。
步骤二、 获得显示器的真实的垂直同步信号频率, 并将其与 在步骤一中预存的标准同步信号表中的标准垂直同步信号频率比 较, 从中选取与真实的垂直同步信号频率的差在第一误差范围内 的标准垂直同步信号频率作为候选的垂直同步信号频率。
其中, 优选地在标准同步信号表中获得与真实的垂直同步信 号频率的之差大于 -1Hz且小于 1Hz (第一误差范围) 的标准垂直 同步信号频率, 作为候选的垂直同步信号频率。 当然取其他误差 范围也是可以的, 本实施例所取的第一误差范围在大于 -1Hz且小 于 1Hz之间只是使得选取的候选的垂直同步信号频率更加准确。
步骤三、 获得显示器的真实的水平同步信号频率, 并将其与 步骤二中获得的候选的垂直同步信号频率所对应的标准水平同步 信号子表中的标准水平同步信号频率进行比较, 得到两者之差在 第二误差范围内的标准水平同步信号频率, 作为正确的水平同步 信号频率, 从而得到显示器的分辨率。 下面以 75Hz为得到候选的 垂直同步信号频率为例, 其所对应的标准水平同步信号频率与分 辨率之间的如下程序所示:
H SYNCTBL code H_syncTable_V75 [] = {
{HS_KHZ(37.5+5) ,Μ— 640x480— 75 }, {HS_KHZ(46.9+1.9) Μ— 800x600— 75 },
{HS_KHZ(49.725+3) ,Μ— 832x624— 75},
{HS_KHZ(60.0+5) ,Μ— 1024x768— 75}, {HS_KHZ(66.5+1.4) ,Μ— 1152x864— 75}, {HS_KHZ(68.0+2) ,Μ— 1152x870— 75}, {HS KHZ(75.0+2) ,Μ— 1280x960— 75}, {HS_KHZ(80.0+3) ,Μ— 1280x1024— 75} 从上述程序中很容易看出, 当检测到显示器的真实的水平同 步信号频率后, 将其与上述步骤中检测到的候选的垂直能同步信 号频率所对应的标准水平同步信号子表中的所有标准水平同步信 号频率进行比较, 一旦得到正确的水平同步信号, 即可得到显示 器的分辨率。
其中, 如果上述步骤中获得的在第一误差范围内的候选的垂 直同步信号频率为多个, 则得到的标准水平同步信号频率也为多 个, 当获得的不同的候选的垂直同步信号频率所对应的标准水平 同步信号频率中有相同的时, 此时, 缩小误差范围 (例如变为 0 至 0.5 ) , 返回步骤二, 根据新的第一误差范围, 再次选取候选的 垂直同步信号频率。
其中, 优选地在候选的水平同步信号频率中获得与真实的水 平同步信号频率之差大于 -IKHz小于 IKHz (第二误差范围)的标 准水平同步信号频率, 作为正确的水平同步信号频率。 当然取其 他误差范围也是可以的, 本实施例所取的第二误差范围在大于 -IKHz且小于 IKHz之间只是为了使得选取的候选的水平同步信 号频率更加准确。
其中, 若未能找到正确的水平同步信号频率 (如果被检测的 显示器的分辨率很高而没有设定在预存的标准水平同步信号子表 中) 时, 则在标准水平同步信号子表中新增标准水平同步信号频 率从而形成新的标准水平同步信号子表, 并根据新的标准水平同 步信号子表中的标准水平同步频率, 获得正确的水平同步信号频 率。
在该步骤中通过候选的垂直同步信号频率与分辨率的关系得 到候选的水平同步信号频率, 在这个步骤之后再通过候选的水平 同步信号频率与真实的水平同步信号频率之间的比较来得到正确 的水平同步信号频率, 如果没有检测到正确的水平同步信号频率, 就在标准水平同步信号子表中增加新的标准水平同步信号频率继 续检测, 直到检测到正确的水平同步信号频率时才停止检测。
本实施例提供的显示器的同步信号检测方法, 先检测到候选 的垂直同步信号频率, 再根据垂直同步信号频率与标准水平同步 信号子表的对应关系, 得到与该垂直同步信号频率对应的所有标 准水平同步信号频率, 最后通过真实的水平同步信号频率与标准 水平同步信号频率进行比较, 得到正确的水平同步信号频率, 进 而得到显示器的分辨率, 该分辨率在以后对显示器的刷频率等参 数设定时, 起到重要的作用, 同时这样分步的检测显示器同步信 号的方法更加准确、 快速。 实施例 2:
结合图 2所示,本实施例提供一种显示器同步信号检测装置, 其包括: 存储单元, 其用于存储一标准同步信号表, 其中, 所述 标准同步信号表中存储有标准垂直同步信号频率和与标准垂直同 步信号频率所对应的标准水平同步信号子表, 优选地, 所述标准 水平同步信号子表存储有与标准垂直同步信号频率对应的所有标 准水平同步信号频率和分辨率;
真实的垂直同步信号频率检测单元, 其用于检测显示器的真 实的垂直同步信号频率;
真实的水平同步信号频率检测单元, 其用于检测显示器的真 实的水平同步信号频率;
候选的垂直同步信号频率获取单元, 其用于获得标准垂直同 步信号频率与真实的垂直同步信号频率的差在第一误差范围内的 标准垂直同步信号频率作为候选的垂直同步信号频率;
正确的水平同步信号频率获取单元, 其用于通过将与获得的 候选的垂直同步信号频率对应的标准水平同步信号子表中的标准 水平同步信号频率与获得的真实的水平同步信号频率进行比较, 得到两者之差在第二误差范围内的标准水平同步信号频率, 作为 正确的水平同步信号频率, 从而得到显示器的分辨率。
本实施例提供的显示器检测装置可以更快更准确的检测到显 示器的同步信号频率。 实施例 3 :
本发明还提供一种显示器, 包括上述的显示器同步信号检测 装置。 本发明所述的显示器可以为液晶显示面板、 液晶显示器、 液 晶电视、 OLED显示面板、 OLED显示器、 OLED电视、 手机、 pad 或电子书等。
可以理解的是, 以上实施方式仅仅是为了说明本发明的原理 而采用的示例性实施方式, 然而本发明并不局限于此。 对于本领 域内的普通技术人员而言, 在不脱离本发明的精神和实质的情况 下, 可以做出各种变型和改进, 这些变型和改进也视为本发明的 保护范围。

Claims

权利要求书
1. 一种显示器同步信号检测方法, 其特征在于, 包括如下步 骤:
获得显示器的真实的垂直同步信号频率, 将其与预存的标准 同步信号表中的标准垂直同步信号频率比较, 从所述标准同步信 号表中选取与所述真实的垂直同步信号频率之差在第一误差范围 内的标准垂直同步信号频率作为候选的垂直同步信号频率, 其中, 所述标准同步信号表中存储有所述标准垂直同步信号频率和与所 述标准垂直同步信号频率对应的标准水平同步信号子表, 所述标 准水平同步信号子表存储有与标准垂直同步信号频率对应的所有 标准水平同步信号频率和分辨率;
获得显示器的真实的水平同步信号频率, 将其与所获得的候 选的垂直同步信号频率对应的所述标准水平同步信号子表中的标 准水平同步信号频率进行比较, 从所述标准水平同步信号子表中 选取与所述真实的水平同步信号频率之差在第二误差范围内的标 准水平同步信号频率, 作为正确的水平同步信号频率, 从而得到 显示器的分辨率。
2. 根据权利要求 1所述的显示器同步信号检测方法, 其特征 在于, 所述第一误差范围为大于 -1Hz且小于 1Ηζ。
3. 根据权利要求 1所述的显示器同步信号检测方法, 其特征 在于, 所述第二误差范围为大于 -ΙΚΗζ且小于 1ΚΗζ。
4. 根据权利要求 1所述的显示器同步信号检测方法, 其特征 在于, 当所获得的候选的垂直同步信号频率为多个且所述多个候 选的垂直同步信号频率所对应的标准水平同步信号频率中有相同 的时, 则缩小所述第一误差范围以获得新的第一误差范围, 并根 据所述新的第一误差范围, 再次选取候选的垂直同步信号频率。
5. 根据权利要求 1所述的显示器同步信号检测方法, 其特征 在于, 还包括:
当未能找到正确的水平同步信号频率时, 则在所述标准水平 同步信号子表中新增标准水平同步信号频率, 以获得新的标准水 平同步信号子表。
6. 根据权利要求 5所述的显示器同步信号检测方法, 其特征 在于, 还包括:
根据所述新的标准水平同步信号子表中的标准水平同步频 率, 获得正确的水平同步信号频率。
7. 根据权利要求 1至 6中任意一项所述的显示器同步信号检 测方法, 其特征在于, 所述标准同步信号表中的标准垂直同步信 号频率在 55Hz~76Hz之间, 且其值为整数。
8. 一种显示器同步信号检测装置, 其特征在于, 包括: 存储单元, 其用于存储一标准同步信号表, 其中, 所述标准 同步信号表中存储有标准垂直同步信号频率和与所述标准垂直同 步信号频率对应的标准水平同步信号子表, 所述标准水平同步信 号子表存储有与一标准垂直同步信号频率对应的所有标准水平同 步信号频率和分辨率;
真实的垂直同步信号频率检测单元, 其用于检测显示器的真 实的垂直同步信号频率;
真实的水平同步信号频率检测单元, 其用于检测显示器的真 实的水平同步信号频率;
候选的垂直同步信号频率获取单元, 其用于获取与所述真实 的垂直同步信号频率之差在第一误差范围内的标准垂直同步信号 频率作为候选的垂直同步信号频率;
正确的水平同步信号频率获取单元, 其用于通过将所述候选 的垂直同步信号频率所对应的标准水平同步信号子表中的标准水 平同步信号频率与所述真实的水平同步信号频率进行比较, 来获 取两者之差在第二误差范围内的标准水平同步信号频率, 作为正 确的水平同步信号频率, 从而得到显示器的分辨率。
9、 一种显示器, 其特征在于, 包括权利要求 8所述的显示器 同步信号检测装置。
PCT/CN2013/087243 2013-07-24 2013-11-15 显示器同步信号检测方法及检测装置、显示器 Ceased WO2015010395A1 (zh)

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