CN102300116B - Rapid detection method of video resolution and apparatus thereof - Google Patents
Rapid detection method of video resolution and apparatus thereof Download PDFInfo
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- CN102300116B CN102300116B CN 201110241435 CN201110241435A CN102300116B CN 102300116 B CN102300116 B CN 102300116B CN 201110241435 CN201110241435 CN 201110241435 CN 201110241435 A CN201110241435 A CN 201110241435A CN 102300116 B CN102300116 B CN 102300116B
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- 238000000034 method Methods 0.000 claims abstract description 27
- 210000001367 artery Anatomy 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 210000003462 vein Anatomy 0.000 claims description 5
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Abstract
The invention provides a rapid detection method of video resolutions and an apparatus thereof. The method comprises the following steps: establishing a resolution information packet table and carrying out grouping according to a plurality of resolution information, wherein the resolution information comprises horizontal synchronization signal data and vertical synchronization signal data; determining difference allowed by information according to the information in the resolution information packet table; detecting unknown video resolution according to the information in the resolution information packet table so as to obtain a detection result; matching the obtained detection result with the information in the resolution information packet table so as to obtain the unknown video resolution. The apparatus comprises: a memory cell, an analysis unit, a detection unit and a matching unit. By using the method and the apparatus provided in the invention, a requirement to a detection equipment clock frequency can be reduced, counting values of the horizontal and vertical synchronization signals can be simultaneously reduced and system resources can be saved.
Description
Technical field
The present invention relates to field of video processing, particularly a kind of method for quick of video resolution and device.
Background technology
Along with popularizing of video technique, various video receptions, switching and treatment facility also develop rapidly.In various field of video processing, essential to the detection of video resolution.According to meeting (the VESA of VESA, Video Electronics Standards Association) the video and graphic array of standard mainly is made up of horizontal-drive signal, vertical synchronizing signal, three basic colors red holding wire, three primary colors blue signal line and three primary colors green line, and the resolution of vision signal is by horizontal-drive signal and vertical synchronizing signal decision.The method that detects video resolution in the prior art is by using treatment facility at a high speed respectively horizontal-drive signal and vertical synchronizing signal to be carried out sample count, and all resolution are set up a look-up table according to the count value of gained, when detecting unknown resolution video, by the sample count value of horizontal-drive signal and vertical synchronizing signal and the data in the look-up table of having set up are mated, thereby find the resolution of this unknown video.Make and detect unknown resolution in this way, require the equipment clock will be far above the clock of the horizontal-drive signal and the vertical synchronizing signal of detected resolution, therefore need checkout equipment to have higher sampling clock, horizontal-drive signal and vertical synchronizing signal are counted simultaneously and also needed huge counter with too high clock reference, consume too much resource, therefore can't finish by general system, in the face of more and more the needs now needs the method for the unknown video resolution of a kind of fast detecting by realize the detection to unknown video resolution than low cost system.
Summary of the invention
The invention provides a kind of method for quick and system of video resolution, by being benchmark with the horizontal-drive signal cycle, the lock-out pulse counting of calculated level synchronizing signal and vertical synchronizing signal and continuous and effective level counting etc., reduced detecting the demand of clock frequency, reduce the count value of horizontal-drive signal and vertical synchronizing signal simultaneously, reduced the resource requirement of detection system.
A kind of method for quick of video resolution comprises:
Set up resolution information grouping form, divide into groups according to a plurality of resolution informations, described resolution information comprise the horizontal-drive signal of resolution and vertical synchronizing signal data, corresponding to the lock-out pulse counting of the lock-out pulse counting of horizontal-drive signal in the described resolution data and/or continuous and effective level counting and vertical synchronizing signal and/or continuous and effective level counting and/or sweep time counting;
Analyze the information in the resolution information grouping form, determine the difference that information allows;
Information according in the resolution information grouping form detects unknown video resolution, obtains testing result;
Information in the testing result that obtains and the resolution information grouping form is mated, obtain the resolution of unknown video.
In the described method, described horizontal-drive signal data comprises: lock-out pulse time, continuous and effective level time and sweep time;
The vertical synchronizing signal data comprises: lock-out pulse time, continuous and effective level time and sweep time.
In the described method, the value of synchronous arteries and veins counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to the horizontal-drive signal lock-out pulse time;
The value of continuous and effective level counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to horizontal-drive signal continuous and effective level time;
The lock-out pulse of described vertical synchronizing signal counting is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, the value that once obtains at a clock signal period counting according to the vertical synchronizing signal lock-out pulse time;
The continuous and effective level counting of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, counts the value that once obtains a clock cycle according to vertical synchronizing signal continuous and effective level time;
Counting sweep time of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, according to calculating sweep time vertical synchronizing signal sweep time and horizontal-drive signal.
In the described method, described information in the testing result that obtains and the resolution information grouping form is mated, obtains the resolution of unknown video, comprising:
Resolution information difference relatively in testing result and the resolution information grouping form is in the difference range that allows.
A kind of device for fast detecting of video resolution comprises:
Memory cell, be used for storing the resolution information grouping form of foundation, divide into groups according to a plurality of resolution informations, described resolution information comprise the horizontal-drive signal of resolution and vertical synchronizing signal data, corresponding to the lock-out pulse counting of the lock-out pulse counting of horizontal-drive signal in the described resolution data and/or continuous and effective level counting and vertical synchronizing signal and/or continuous and effective level counting and/or sweep time counting;
Analytic unit is analyzed the information in the resolution information grouping form, determines the difference that information allows;
Detecting unit, the information according in the resolution information grouping form detects unknown video resolution, obtains testing result;
Matching unit, the information that is used for testing result that detecting unit is obtained and resolution information grouping form is mated, and obtains the resolution of unknown video.
In the described device, described horizontal-drive signal data comprises: lock-out pulse time, continuous and effective level time and sweep time;
The vertical synchronizing signal data comprises: lock-out pulse time, continuous and effective level time and sweep time.
In the described device, the value of synchronous arteries and veins counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to the horizontal-drive signal lock-out pulse time;
The value of continuous and effective level counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to horizontal-drive signal continuous and effective level time;
The lock-out pulse of described vertical synchronizing signal counting is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, the value that once obtains at a clock signal period counting according to the vertical synchronizing signal lock-out pulse time;
The continuous and effective level counting of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, counts the value that once obtains a clock cycle according to vertical synchronizing signal continuous and effective level time;
Counting sweep time of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, according to calculating sweep time vertical synchronizing signal sweep time and horizontal-drive signal.
In the described device, the information in testing result that described matching unit obtains detecting unit and the resolution information grouping form is mated, and obtains the resolution of unknown video, comprising:
Resolution information difference relatively in testing result and the resolution information grouping form is in the difference range that allows.
The invention provides a kind of method for quick and device of video resolution, wherein method comprises: set up resolution information grouping form, divide into groups according to a plurality of resolution informations, described resolution information comprises the horizontal-drive signal and the vertical synchronizing signal data of resolution; According to the information in the resolution information grouping form, determine the difference that information allows; Information according in the resolution information grouping form detects unknown video resolution, obtains testing result; Information in the testing result that obtains and the resolution information grouping form is mated, obtain unknown video resolution.Described device comprises memory cell, analytic unit, detecting unit and matching unit.By method provided by the invention and device, by using the counting of same reference clock to the horizontal-drive signal and the vertical synchronizing signal of unknown resolution, reduced requirement, reduced the count value of level and vertical synchronizing signal simultaneously, saved system resource the checkout equipment clock frequency.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is resolution information grouping form schematic diagram;
Fig. 2 is the method for quick flow chart of video resolution;
Fig. 3 is the device for fast detecting structure chart of video resolution.
Embodiment
In order to make those skilled in the art person understand technical scheme in the embodiment of the invention better, and above-mentioned purpose of the present invention, feature and advantage can be become apparent more, technical scheme among the present invention is described in further detail below in conjunction with accompanying drawing.
The invention provides a kind of method for quick and system of video resolution, by being benchmark with the horizontal-drive signal cycle, the lock-out pulse counting of calculated level synchronizing signal and vertical synchronizing signal and continuous and effective level counting etc., reduced detecting the demand of clock frequency, reduce the count value of horizontal-drive signal and vertical synchronizing signal simultaneously, reduced the resource requirement of detection system.
In the embodiments of the invention, as shown in Figure 1, when being 50MHz for the frequency of video resolution checkout gear, its can detection resolution and renewal frequency be 1920*1440 or the higher resolution and the signal of renewal frequency.With 640*480@60 is example, and wherein 640*480 is the video resolution value, and 60 is the vertical scanning frequency of video.
A kind of method for quick of video resolution as shown in Figure 2, comprising:
S201: set up resolution information grouping form, divide into groups according to a plurality of resolution informations, described resolution information comprise the horizontal-drive signal of resolution and vertical synchronizing signal data, corresponding to the lock-out pulse counting of the lock-out pulse counting of horizontal-drive signal in the described resolution data and/or continuous and effective level counting and vertical synchronizing signal and/or continuous and effective level counting and/or sweep time counting;
Described resolution information grouping form can be chosen horizontal-drive signal lock-out pulse counting and continuous and effective level and count one or all as resolution information; Described resolution information form can be chosen in vertical synchronizing signal lock-out pulse counting, continuous and effective level counting and the sweep time counting one or all as resolution information; Resolution information in the resolution information grouping form is many more, and the resource of consumption is many more, and the accuracy that unknown video resolution is detected is high more simultaneously.
S202: analyze the information in the resolution information grouping form, determine the difference that information allows;
S203: the information according in the resolution information grouping form, unknown video resolution is detected, obtain testing result;
Described unknown resolution is detected the whole resolution informations in can detection resolution information block form or the part resolution information of horizontal-drive signal and vertical synchronizing signal;
S204: the information in the testing result that obtains and the resolution information grouping form is mated, obtain the resolution of unknown video.
In the described method, described horizontal-drive signal data comprises: lock-out pulse time, continuous and effective level time and sweep time;
The vertical synchronizing signal data comprises: lock-out pulse time, continuous and effective level time and sweep time.
In the described method, the value of synchronous arteries and veins counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to the horizontal-drive signal lock-out pulse time;
For instance, as shown in Figure 1, under the system frequency of 50MHz for the counting benchmark, a clock signal period is 20ns, and the horizontal-drive signal lock-out pulse time, then horizontal-drive signal lock-out pulse counting was 3813ns/20ns=190 when being 3813ns;
The value of continuous and effective level counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to horizontal-drive signal continuous and effective level time;
The lock-out pulse of described vertical synchronizing signal counting is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, the value that once obtains at a clock signal period counting according to the vertical synchronizing signal lock-out pulse time;
The continuous and effective level counting of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, counts the value that once obtains a clock cycle according to vertical synchronizing signal continuous and effective level time;
Sweep time of described vertical synchronizing signal, counting was, with horizontal-drive signal cycle of described vertical synchronizing signal be benchmark, according to calculating sweep time vertical synchronizing signal sweep time and horizontal-drive signal;
For instance, as shown in Figure 1, under the system frequency of 50MHz for the counting benchmark, vertical synchronizing signal sweep time is 16683218ns, horizontal-drive signal sweep time of the same period is 31777ns, and then vertical synchronizing signal count value sweep time is 16683217ns/31777ns=525.
In the described method, described information in the testing result that obtains and the resolution information grouping form is mated, obtains unknown video resolution, comprising:
Resolution information difference relatively in testing result and the resolution information grouping form is in the difference range that allows;
Since detect the testing result obtain not necessarily with resolution information grouping form in resolution information in full accord, therefore as long as the difference of the two can think that in certain scope the match is successful, described difference can be determined according to the clock frequency of checkout gear and the data in the resolution information grouping form, data in the assurance resolution information grouping form add or reduce difference and can not repeat with other data with grouping, even or data add or reduce after the difference and other data of same grouping repeat, but the judgement of the data by other groupings can be determined unique resolution and gets final product.
A kind of device for fast detecting of video resolution as shown in Figure 3, comprising:
Detecting unit 303, the information according in the resolution information grouping form detects unknown video resolution, obtains testing result;
In the described device, described horizontal-drive signal data comprises: lock-out pulse time, continuous and effective level time and sweep time;
The vertical synchronizing signal data comprises: lock-out pulse time, continuous and effective level time and sweep time.
In the described device, the value of synchronous arteries and veins counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to the horizontal-drive signal lock-out pulse time;
The value of continuous and effective level counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to horizontal-drive signal continuous and effective level time;
The lock-out pulse of described vertical synchronizing signal counting is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, the value that once obtains at a clock signal period counting according to the vertical synchronizing signal lock-out pulse time;
The continuous and effective level counting of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, counts the value that once obtains a clock cycle according to vertical synchronizing signal continuous and effective level time;
Counting sweep time of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, according to calculating sweep time vertical synchronizing signal sweep time and horizontal-drive signal.
In the described device, the information in testing result that described matching unit obtains detecting unit and the resolution information grouping form is mated, and obtains unknown video resolution, comprising:
Resolution information difference relatively in testing result and the resolution information grouping form is in the difference range that allows.
The invention provides a kind of method for quick and device of video resolution, wherein method comprises: set up resolution information grouping form, divide into groups according to a plurality of resolution informations, described resolution information comprises the horizontal-drive signal and the vertical synchronizing signal data of resolution; According to the information in the resolution information grouping form, determine the difference that information allows; Information according in the resolution information grouping form detects unknown video resolution, obtains testing result; Information in the testing result that obtains and the resolution information grouping form is mated, obtain unknown video resolution.Described device comprises memory cell, analytic unit, detecting unit and matching unit.By method provided by the invention and device, by using the counting of same reference clock to the horizontal-drive signal and the vertical synchronizing signal of unknown resolution, reduced requirement, reduced the count value of level and vertical synchronizing signal simultaneously, saved system resource the checkout equipment clock frequency.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (6)
1. the method for quick of a video resolution is characterized in that, comprising:
Set up resolution information grouping form, divide into groups according to a plurality of resolution informations, described resolution information comprise the horizontal-drive signal of resolution and vertical synchronizing signal data, corresponding to the lock-out pulse counting of the lock-out pulse counting of horizontal-drive signal in the described resolution data and/or continuous and effective level counting and vertical synchronizing signal and/or continuous and effective level counting and/or sweep time counting;
Analyze the information in the resolution information grouping form, determine the difference that information allows;
Information according in the resolution information grouping form detects unknown video resolution, obtains testing result;
Information in the testing result that obtains and the resolution information grouping form is mated, obtain the resolution of unknown video;
The value of lock-out pulse counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to the horizontal-drive signal lock-out pulse time;
The value of continuous and effective level counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to horizontal-drive signal continuous and effective level time;
The lock-out pulse of described vertical synchronizing signal counting is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, the value that once obtains at a clock signal period counting according to the vertical synchronizing signal lock-out pulse time;
The continuous and effective level counting of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, counts the value that once obtains a clock cycle according to vertical synchronizing signal continuous and effective level time;
Counting sweep time of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, according to calculating sweep time vertical synchronizing signal sweep time and horizontal-drive signal.
2. the method for claim 1 is characterized in that, described horizontal-drive signal data comprises: lock-out pulse time, continuous and effective level time and sweep time;
The vertical synchronizing signal data comprises: lock-out pulse time, continuous and effective level time and sweep time.
3. the method for claim 1 is characterized in that, described information in the testing result that obtains and the resolution information grouping form is mated, and obtains the resolution of unknown video, comprising:
Resolution information difference relatively in testing result and the resolution information grouping form is in the difference range that allows.
4. the device for fast detecting of a video resolution is characterized in that, comprising:
Memory cell, be used for storing the resolution information grouping form of foundation, divide into groups according to a plurality of resolution informations, described resolution information comprise the horizontal-drive signal of resolution and vertical synchronizing signal data, corresponding to the lock-out pulse counting of the lock-out pulse counting of horizontal-drive signal in the described resolution data and/or continuous and effective level counting and vertical synchronizing signal and/or continuous and effective level counting and/or sweep time counting;
Analytic unit is analyzed the information in the resolution information grouping form, determines the difference that information allows;
Detecting unit, the information according in the resolution information grouping form detects unknown video resolution, obtains testing result;
Matching unit, the information that is used for testing result that detecting unit is obtained and resolution information grouping form is mated, and obtains the resolution of unknown video;
The value of synchronous arteries and veins counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to the horizontal-drive signal lock-out pulse time;
The value of continuous and effective level counting for once obtaining at a clock signal period counting of described horizontal-drive signal according to horizontal-drive signal continuous and effective level time;
The lock-out pulse of described vertical synchronizing signal counting is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, the value that once obtains at a clock signal period counting according to the vertical synchronizing signal lock-out pulse time;
The continuous and effective level counting of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, counts the value that once obtains a clock cycle according to vertical synchronizing signal continuous and effective level time;
Counting sweep time of described vertical synchronizing signal is a benchmark for the horizontal-drive signal cycle with described vertical synchronizing signal, according to calculating sweep time vertical synchronizing signal sweep time and horizontal-drive signal.
5. device as claimed in claim 4 is characterized in that, described horizontal-drive signal data comprises: lock-out pulse time, continuous and effective level time and sweep time;
The vertical synchronizing signal data comprises: lock-out pulse time, continuous and effective level time and sweep time.
6. device as claimed in claim 4 is characterized in that, the information in testing result that described matching unit obtains detecting unit and the resolution information grouping form is mated, and obtains the resolution of unknown video, comprising:
Resolution information difference relatively in testing result and the resolution information grouping form is in the difference range that allows.
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| CN103414864A (en) * | 2013-08-09 | 2013-11-27 | 广东威创视讯科技股份有限公司 | VGA resolution identification method and device |
| CN104581134B (en) * | 2013-10-24 | 2017-08-18 | 深圳艾科创新微电子有限公司 | A kind of vision signal resolution ratio detection means and method |
| CN108449564B (en) * | 2017-02-16 | 2020-03-06 | 视联动力信息技术股份有限公司 | Method and system for supporting video decoding chip to adapt to video source resolution |
| CN108235000B (en) * | 2018-01-26 | 2019-12-13 | 北京视通科技有限公司 | Resolution detection method and device based on parallel digital video signals |
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| CN1237854A (en) * | 1998-06-01 | 1999-12-08 | 通用仪器公司 | Automatic detection of HDTV video format |
| CN1379321A (en) * | 2001-04-06 | 2002-11-13 | 三星电子株式会社 | Display equipment capable of raising resolution ratio change detecting speed and its detecting method |
| CN1641562A (en) * | 2004-01-14 | 2005-07-20 | 威达电股份有限公司 | Method and device for detecting resolution rate for display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237854A (en) * | 1998-06-01 | 1999-12-08 | 通用仪器公司 | Automatic detection of HDTV video format |
| CN1379321A (en) * | 2001-04-06 | 2002-11-13 | 三星电子株式会社 | Display equipment capable of raising resolution ratio change detecting speed and its detecting method |
| CN1641562A (en) * | 2004-01-14 | 2005-07-20 | 威达电股份有限公司 | Method and device for detecting resolution rate for display device |
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