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 PDFInfo
- 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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- WO
- WIPO (PCT)
- Prior art keywords
- standard
- signal frequency
- synchronization signal
- frequency
- vertical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/006—Details of the interface to the display terminal
- G09G5/008—Clock recovery
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/12—Synchronisation between the display unit and other units, e.g. other display units, video-disc players
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/22—Control 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
- G09G5/30—Control 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)
- Multimedia (AREA)
- Synchronizing For Television (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/369,472 US9437164B2 (en) | 2013-07-24 | 2013-11-15 | Method and device for detecting a synchronization signal of a display, and display |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314638.8 | 2013-07-24 | ||
| CN201310314638.8A CN103413512B (zh) | 2013-07-24 | 2013-07-24 | 显示器同步信号检测方法及检测装置、显示器 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015010395A1 true WO2015010395A1 (zh) | 2015-01-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2013/087243 Ceased WO2015010395A1 (zh) | 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 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9437164B2 (zh) |
| CN (1) | CN103413512B (zh) |
| WO (1) | WO2015010395A1 (zh) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106408559B (zh) * | 2016-09-05 | 2020-03-10 | 京东方科技集团股份有限公司 | 一种检测分辨率的方法和终端 |
| KR102932866B1 (ko) * | 2021-11-01 | 2026-03-04 | 삼성디스플레이 주식회사 | 표시 장치 및 표시 장치의 구동 방법 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6097444A (en) * | 1998-09-11 | 2000-08-01 | Mitsubishi Denki Kabushiki Kaisha | Automatic image quality adjustment device adjusting phase of sampling clock for analog video signal to digital video signal conversion |
| CN1130585C (zh) * | 1999-07-20 | 2003-12-10 | 三星电子株式会社 | 用于自动控制液晶显示器屏幕状态的装置和方法 |
| CN101430874A (zh) * | 2007-09-25 | 2009-05-13 | 恩益禧电子股份有限公司 | 信号处理装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11231820A (ja) * | 1998-02-16 | 1999-08-27 | Fujitsu Ltd | 表示モード選択方法及び表示装置 |
| TWI252040B (en) * | 2004-06-29 | 2006-03-21 | Benq Corp | Method for determining the digital video signal of a digital display |
-
2013
- 2013-07-24 CN CN201310314638.8A patent/CN103413512B/zh not_active Expired - Fee Related
- 2013-11-15 US US14/369,472 patent/US9437164B2/en active Active
- 2013-11-15 WO PCT/CN2013/087243 patent/WO2015010395A1/zh not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6097444A (en) * | 1998-09-11 | 2000-08-01 | Mitsubishi Denki Kabushiki Kaisha | Automatic image quality adjustment device adjusting phase of sampling clock for analog video signal to digital video signal conversion |
| CN1130585C (zh) * | 1999-07-20 | 2003-12-10 | 三星电子株式会社 | 用于自动控制液晶显示器屏幕状态的装置和方法 |
| CN101430874A (zh) * | 2007-09-25 | 2009-05-13 | 恩益禧电子股份有限公司 | 信号处理装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103413512B (zh) | 2015-10-21 |
| CN103413512A (zh) | 2013-11-27 |
| US20150077424A1 (en) | 2015-03-19 |
| US9437164B2 (en) | 2016-09-06 |
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