CN103268194A - Delay time testing method and testing tool for interactive intelligent panel - Google Patents
Delay time testing method and testing tool for interactive intelligent panel Download PDFInfo
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Abstract
The invention provides a delay time testing method of an interactive intelligent panel, which comprises the following steps: moving the painting brush on the tested interactive intelligent flat screen at a constant speed; capturing a scribing trace formed by the interactive intelligent panel responding to the movement of the painting brush, the position of the painting brush and a picture of a measuring instrument which is preset according to the movement of the painting brush; the measuring instrument is used for acquiring the moving distance of the painting brush and the length of the scribing mark; acquiring a distance difference value between the length of the scribing mark in the picture and the moving distance of the painting brush; and acquiring the ratio of the distance difference to the moving speed of the brush to obtain the touch delay time. The invention also provides a delay time testing tool of the interactive intelligent panel, which can improve the detection precision of the delay time of the interactive intelligent panel.
Description
Technical field
The present invention relates to the dull and stereotyped performance test of interactive intelligence field, particularly relate to a kind of method of testing and testing tool time delay of interactive intelligence flat board.
Background technology
Present whole industry substantially all is to be defined in to touch frame on the response time for the definition that touches time delay, when we write at all-in-one, earlier by touching the trajectory coordinates that frame catches writing position, be modeled to usb data by usb protocol and transfer to computer module, computer module is by the computing of each coordinate, become view data to deliver to corresponding display module by corresponding software simulation, export Video Decoder to by HDMI and carry out the image decoding, connect display screen by LVDS behind the video decode and be only the final display frame that we see.And can be according to the difference of screen refresh rate in the video decode part, decoding process also can change thereupon.Use screen can be divided into two kinds of patterns of 60HZ/120HZ substantially at present in the industry.Demoder output acquiescence refresh rate is 60HZ, but when we adopt the 120HZ screen, just need increase frequency multiplication plate, i.e. MEMC technology between the two.
Its principle adopts dynamic mapping system exactly, inserts a frame movement compensating frame between two traditional two field pictures, and the 60Hz refresh rate of ordinary flat TV is promoted to 120Hz.For example: the frame sequential of a secondary flow picture originally is: 123456
The MEMC technology is by blockette, after on level and the vertical both direction movement tendency of image being analyzed between original various frames intermediate frame of insertion, the frame sequence behind the interleave becomes: 1C22C33C44C55C6
Original like this field frequency just is not enough to manifest all frames now, doubles effect so just can present field frequency, and is increased to 120Hz from 60Hz.This technology can satisfy the effect of frequency multiplication, but has also brought corresponding late effect.In interleave, DDR need preserve two frames or the multiple image that are transmitting, by calculating the midway film between frame and the frame, and then inserts this midway film between two frames.For writing, the action of this preservation frame number, calculating midway film, insertion picture will according to the difference of processing mode, can reach tens milliseconds time delay to bringing bigger late effect in the writing process undoubtedly.
At present delay algorithm all is that to touch the frame theoretical response time be final decision content time delay in the industry, has bigger difference with the actual delay time, is more unilateral decision procedure.Touching the frame response time is between several milliseconds, and computer buffer memory and calculating also are between several milliseconds, but the frequency multiplication cache-time is because be the delay of a few frame forms, and according to the difference of processing scheme mode, the time can reach tens milliseconds at most; This respect time delay, all specification targets can't quantize to embody in industry at present, and the interactive intelligence that obtains of measuring technique is difficult to truly reflect interactive intelligence dull and stereotyped real touch time delay dull and stereotyped time delay at present.
Summary of the invention
The objective of the invention is to propose a kind of method of testing and testing tool time delay of interactive intelligence flat board, can improve the interactive intelligence accuracy of detection of dull and stereotyped time delay.
The scheme that adopts:
A kind of method of testing time delay of interactive intelligence flat board comprises step:
Paintbrush is at the uniform velocity mobile on the dull and stereotyped curtain of tested interactive intelligence;
The picture of the measuring instrument that catches line vestige that the described paintbrush of the dull and stereotyped response of interactive intelligence moves formation, pen position and arrange according to the movement of described paintbrush in advance; Wherein, described measuring instrument is used for obtaining the displacement of described paintbrush and the length of described line vestige;
Obtain the length of the described line vestige in the picture and described paintbrush displacement apart from difference;
Obtain described ratio apart from difference and described paintbrush translational speed, obtain the time delay of interactive intelligence flat board.
And a kind of testing tool time delay of interactive intelligence flat board comprises: image capture device, at the uniform velocity lining instrument, measuring instrument; Wherein, described at the uniform velocity lining instrument comprises paintbrush, is used at the uniform velocity line on the dull and stereotyped curtain of tested interactive intelligence;
Described measuring instrument arranges according to the motion track of described paintbrush, is used for obtaining the displacement of described paintbrush and the length that the described paintbrush of the dull and stereotyped curtain response of interactive intelligence moves the line vestige of formation;
Described image capture device is every the picture that catches described line vestige, pen position and described measuring instrument.
Among the present invention, when the interactive intelligence flat board is rule, by getting access to the dull and stereotyped line vestige of formation that responds of interactive intelligence with respect to the delay distance of the paintbrush that on the interactive intelligence flat board, at the uniform velocity moves, obtain this delay distance then with respect to the ratio of the translational speed of paintbrush, obtain comparatively real interactive intelligence dull and stereotyped time delay; The present invention touches the frame response time except considering, also fully taken into account the frequency multiplication cache-time, more objectively considered the factor that postpones of influential touch product, the most real experience value effectively presented, improved the measuring accuracy of interactive intelligence flat board time delay.
Description of drawings
Fig. 1 is an embodiment process flow diagram of the inventive method;
Fig. 2 is an instrumentation plan in the inventive method;
Fig. 3 is an instrumentation plan in the inventive method;
Fig. 4 is an instrumentation plan in the inventive method;
Fig. 5 is a synoptic diagram of the survey instrument of the present invention's proposition;
Fig. 6 is another synoptic diagram of the survey instrument of the present invention's proposition;
Fig. 7 is another synoptic diagram of the survey instrument of the present invention's proposition;
Fig. 8 is another synoptic diagram of the survey instrument of the present invention's proposition;
Fig. 9 is another synoptic diagram of the survey instrument of the present invention's proposition.
Embodiment
The present invention proposes a kind of method of testing time delay of interactive intelligence flat board, and its implementing procedure can comprise step with reference to figure 1:
S1, paintbrush is at the uniform velocity mobile on the dull and stereotyped curtain of tested interactive intelligence;
Concrete, during test, in the interactive intelligence flat board, open drawing tools, can allow written handwriting be kept; In view of present general interactive intelligence plate technique, can be with the pointer of interactive intelligence flat board as the paintbrush among the present invention.
S2, catch line vestige that the dull and stereotyped response of interactive intelligence paintbrush moves formation, pen position and the picture of the measuring instrument that arranges according to the movement of paintbrush in advance;
The picture of the measuring instrument that catches line vestige that the dull and stereotyped response of interactive intelligence paintbrush moves formation, pen position and arrange according to the movement of paintbrush in advance; Wherein, measuring instrument is used for obtaining the displacement of paintbrush and the length of line vestige.
When obtaining picture, the image-capturing apparatus of automatic control can be adopted, also manual image-capturing apparatus can be adopted; As: can adopt camera as image-capturing apparatus;
The displacement of S3, the length of obtaining the line vestige in the picture and paintbrush apart from difference;
Because there being time delay, detail pen and person's handwriting can exist a delay distance poor, catch setting-out vestige device and pounce on and catch picture by pouncing on, and can directly read this segment distance on measuring instrument.
S4, obtain the ratio apart from difference and paintbrush translational speed in the picture, obtain the time delay of interactive intelligence flat board.
Among the present invention, when the interactive intelligence flat board is rule, by getting access to the dull and stereotyped line vestige of formation that responds of interactive intelligence with respect to the delay distance of the paintbrush that on the interactive intelligence flat board, at the uniform velocity moves, obtain this delay distance then with respect to the ratio of the translational speed of paintbrush, obtain comparatively real interactive intelligence dull and stereotyped time delay; The present invention touches the frame response time except considering, also fully taken into account the frequency multiplication cache-time, more objectively considered the dull and stereotyped factor that postpones of influential interactive intelligence, the most real experience value is effectively presented, improved the measuring accuracy of the time delay of interactive intelligence flat board.
The interactive intelligence flat board is that a kind of warm TV tech, computer technology, touching technique, sound technique are in one, realize the integration apparatus of man-machine interaction, it not only has the function that traditional LCD TV high definition shows, also can make it also have computing power by disposing built-in computer module, and can control computer by touch technology, obtain man-machine interactive experience easily.
As one of them specific embodiment, can be referring to Fig. 2, to set paintbrush and begin to carry out at the uniform velocity from the high order end of interactive intelligence flat board that straight line moves, the translational speed of paintbrush can directly read by lining instrument at the uniform velocity, is V; The picture that obtains such as Fig. 2, from this picture, the displacement that can obtain paintbrush is L1, it is L2 that this paintbrush of the dull and stereotyped response of interactive intelligence moves the line vestige length that obtains; Then this line vestige is L1-L2=S with respect to the delay distance of paintbrush current location; Then be T=S/V the time delay of interactive intelligence flat board.
Because the interactive intelligence flat board refreshes also can be at tens more than the millisecond with the response time minimum.If in Fig. 1 embodiment, when obtaining picture, the dull and stereotyped curtain of interactive intelligence just refreshes, and can produce considerable influence this moment to test result; Therefore need to eliminate the influence of the dull and stereotyped refresh time of interactive intelligence, further, the present invention has done following improvement:
In above-mentioned steps S2, catch picture at interval with first predetermined time; Wherein, first predetermined time was spaced apart the time interval of obtaining 2 pictures continuously;
In above-mentioned steps S3, obtain in every width of cloth picture apart from difference;
In above-mentioned steps S4, obtain the ratio apart from difference and paintbrush translational speed in each width of cloth picture, when the very first time was less than or equal to for second time, the minimum value of ratio was and touches time delay; Wherein, the very first time is minimum value poor of the maximal value of ratio and ratio; Second time was the refresh time of the dull and stereotyped curtain of interactive intelligence.
By repeatedly acquiring ratio not of uniform size, when the difference of the minimum value of the maximal value of this ratio and this ratio was less than or equal to the refresh time of interactive intelligence flat board, the minimum value of this ratio was more real interactive intelligence dull and stereotyped time delay.
On the other hand, because the limitation of present image capture device, there is aperture time in the picture catching device, when obtaining each picture, can produce certain influence to the time delay of interactive intelligence flat board; For camera, be the camera shutter time.Be spaced apart the aperture time of camera with second predetermined time at this; Because the influence at interval of second predetermined time also can cause certain error to interactive intelligence dull and stereotyped time delay, the present invention has done further improvement for this reason:
Catch picture at interval with first predetermined time; Wherein, first predetermined time was spaced apart the time interval of obtaining 2 pictures continuously;
Obtain in every width of cloth picture apart from difference;
Obtain the ratio apart from difference and paintbrush translational speed in each width of cloth picture,
The refresh time that is less than or equal to the dull and stereotyped curtain of interactive intelligence when the difference of the minimum value of the maximal value of ratio and ratio with second predetermined time interval difference the time, then obtain the minimum value of ratio as the time delay of interactive intelligence flat board; Wherein, second predetermined time was spaced apart the camera shutter time.
Concrete, utilize camera to carry out picture when catching, not need under the smear situation to guarantee aperture time toward downward modulation, lower limit is shielded refresh time backlight and is decided to be the upper limit for approaching.For avoiding disturbed test result backlight, and evade conditions of streaking, the camera shutter time value is decided to be 4ms/ and opens.
When the interactive intelligence flat board is rule, can carry out the line of straight line line, circular line or other shapes according to physical condition, in general, carry out the straight line line than being easier to operation.
Because the present invention need use the at the uniform velocity translational speed of paintbrush, for the at the uniform velocity lining instrument that can directly obtain the paintbrush translational speed, can be directly obtain from lining instrument at the uniform velocity; But can not directly obtain the at the uniform velocity scoring equipment of translational speed of paintbrush for some, can adopt following method to obtain:
The displacement of the paintbrush in adjacent 2 width of cloth pictures obtained the translational speed of paintbrush at interval apart from difference divided by first predetermined time; First predetermined time was spaced apart the time interval of obtaining 2 pictures continuously.For camera, first predetermined time interval is the continuous shooting time.
As another embodiment, set paintbrush and begin to carry out at the uniform velocity from the high order end of interactive intelligence flat board that straight line moves, when obtaining the at the uniform velocity translational speed of paintbrush, continuous 2 pictures that obtain, as shown in Figure 3 and Figure 4, as can be seen from Figure 3, the displacement of paintbrush is L3, and the displacement of paintbrush is L4 as can be seen from Figure 4; The range difference of L4 and L3 is the distance that moves the time of paintbrush between 2 pictures of image capture device continuous capturing; It namely is interval of above-mentioned first predetermined time; Then, the movement speed v of paintbrush=(L4-L3)/first predetermined time at interval.
In the above-described embodiments, if adopt camera as the equipment that catches picture, then first predetermined time was spaced apart the camera continuous shooting time.
The present invention also proposes a kind of testing tool time delay of interactive intelligence flat board, and its structural representation can comprise referring to Fig. 5: image capture device, at the uniform velocity lining instrument, measuring instrument; Wherein, at the uniform velocity lining instrument comprises paintbrush, is used at the uniform velocity line on the dull and stereotyped curtain of tested interactive intelligence;
Measuring instrument is used for obtaining the displacement of paintbrush and the length that the dull and stereotyped curtain response of interactive intelligence paintbrush moves the line vestige of formation;
Image capture device catches the picture of line vestige, pen position and measuring instrument.
Carry out interactive intelligence when testing dull and stereotyped time delay, tested interactive intelligence flat board is placed workbench shown in Figure 5; This workbench can be desktop or other stilts.
In embodiment, as shown in Figure 6, at the uniform velocity lining instrument also comprises tracks, drive motor, gearing and support therein; Paintbrush is fixed on the support with removably, and support is connected with gearing, and drive motor at the uniform velocity drive transmission moves in tracks; Corresponding tracks arranges measuring instrument.
Paintbrush is fixed on the support with removably, specifically includes but not limited to following mode: chimeric, clamping, screw thread are fixing etc.
Generally speaking, making at the uniform velocity lining instrument straight line line on the interactive intelligence flat board, can obtain test result more easily, is rectilinear orbit with tracks therefore; Measuring instrument is linear staff, and is parallel with tracks.
Measuring instrument also can adopt electronic measurement equipment, as speed/distance measuring unit of often using in the stadium at present.
Also can tracks be set to other shapes; As square, rectangle or circle etc., be example at this with the circle, be described further, please refer to Fig. 7, tracks is set to circuit orbit; Measuring instrument is circular scale.
Concrete, the radius of tracks can be arranged bigger than the radius of circular scale, make when at the uniform velocity lining instrument driving paintbrush moves, paintbrush can just move along the outer side edges edge of circular scale, like this, can directly read the length of line vestige and the shift position of paintbrush by the picture that catches;
Perhaps, as shown in Figure 8, tracks is set to circuit orbit; Measuring instrument is circular scale.
Concrete, the radius of tracks can be arranged bigger than the radius of circular scale, make when at the uniform velocity lining instrument driving paintbrush moves, paintbrush can just move along the inner side edge edge of circular scale, like this, can directly read the length of line vestige and the shift position of paintbrush by the picture that catches.
It should be noted that; when using Fig. 7 and testing tool shown in Figure 8 to test; because the movement along with paintbrush; the line vestige can repeat through a position, makes the line vestige be difficult to differentiate the end of line vestige, therefore; there is certain limitation in this mode; namely be generally to be applicable to the dull and stereotyped test of large-screen interactive intelligence, when the line vestige forms a circle, need to remove the line vestige and carry out the next round test again.
Further, please refer to Fig. 9, in order further to improve interactive intelligence precision and the raising test speed of dull and stereotyped time delay, touch testing tool time delay also comprises processor;
Wherein, image capture device catches the line vestige at interval with first predetermined time, and wherein, first predetermined time was spaced apart the time interval of obtaining 2 pictures continuously; Processor be used for obtaining the length of line vestige of every width of cloth picture and paintbrush displacement apart from difference, and obtain the ratio apart from the translational speed of difference and paintbrush in each width of cloth picture, when the difference of the minimum value of the maximal value of ratio and ratio is less than or equal to the refresh time of the dull and stereotyped curtain of interactive intelligence, then obtain the minimum value of ratio as the time delay of interactive intelligence flat board.
By above-mentioned processing, can eliminate the influence of the dull and stereotyped refresh time of interactive intelligence, obtain more accurate interactive intelligence flat board time delay fast.
Because predetermined time influence at interval, can make interactive intelligence produce certain error dull and stereotyped time delay, therefore, do following improvement: image capture device catches the line vestige at interval with first predetermined time, wherein, first predetermined time was spaced apart the time interval of obtaining 2 pictures continuously; Processor be used for obtaining the length of line vestige of every width of cloth picture and paintbrush displacement apart from difference, and obtain the ratio apart from the translational speed of difference and paintbrush in each width of cloth picture, the refresh time that is less than or equal to the dull and stereotyped curtain of interactive intelligence when the difference of the minimum value of the maximal value of ratio and ratio with second predetermined time interval difference the time, then obtain the minimum value of ratio as the time delay of interactive intelligence flat board, wherein, second predetermined time was spaced apart the camera shutter time.
This interactive intelligence flat board can based on but do not limit operating systems such as windows, android, IOS.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. method of testing time delay of an interactive intelligence flat board is characterized in that, comprises step:
Paintbrush is at the uniform velocity mobile on the dull and stereotyped curtain of tested interactive intelligence;
The picture of the measuring instrument that catches line vestige that the described paintbrush of the dull and stereotyped response of interactive intelligence moves formation, pen position and arrange according to the movement of described paintbrush in advance; Wherein, described measuring instrument is used for obtaining the displacement of described paintbrush and the length of described line vestige;
Obtain the length of the described line vestige in the picture and described paintbrush displacement apart from difference;
Obtain described ratio apart from difference and described paintbrush translational speed, obtain the time delay of interactive intelligence flat board.
2. according to method of testing time delay of the described interactive intelligence flat board of claim 1, it is characterized in that,
Catch described picture at interval with first predetermined time; Wherein, described first predetermined time is spaced apart the time interval of obtaining 2 described pictures continuously;
Obtain described apart from difference in every width of cloth picture;
Obtain the described ratio apart from difference and described paintbrush translational speed in each width of cloth picture,
When the difference of the minimum value of the maximal value of described ratio and described ratio is less than or equal to the refresh time of the dull and stereotyped curtain of described interactive intelligence, obtain the minimum value of described ratio as the time delay of interactive intelligence flat board.
3. method of testing time delay of interactive intelligence flat board according to claim 1 is characterized in that,
Catch described picture at interval with first predetermined time; Wherein, described first predetermined time is spaced apart the time interval of obtaining 2 described pictures continuously;
Obtain described apart from difference in every width of cloth picture;
Obtain the described ratio apart from difference and described paintbrush translational speed in each width of cloth picture,
The refresh time that is less than or equal to the dull and stereotyped curtain of described interactive intelligence when the difference of the minimum value of the maximal value of described ratio and described ratio with described second predetermined time interval difference the time, then obtain the minimum value of described ratio as the time delay of interactive intelligence flat board; Wherein, described second predetermined time is spaced apart the camera shutter time.
4. according to method of testing time delay of claim 2 or 3 described interactive intelligence flat boards, it is characterized in that, with described paintbrush on the dull and stereotyped curtain of tested interactive intelligence at the uniform velocity straight line move;
With the displacement of the paintbrush in adjacent 2 described pictures apart from difference divided by described first predetermined time at interval, obtain the translational speed of described paintbrush.
5. testing tool time delay of an interactive intelligence flat board is characterized in that, comprising: image capture device, at the uniform velocity lining instrument, measuring instrument; Wherein, described at the uniform velocity lining instrument comprises paintbrush, is used at the uniform velocity line on the dull and stereotyped curtain of tested interactive intelligence;
Described measuring instrument is used for obtaining the displacement of described paintbrush and the length that the described paintbrush of the dull and stereotyped curtain response of interactive intelligence moves the line vestige of formation;
Described image capture device catches the picture of described line vestige, pen position and described measuring instrument.
6. testing tool time delay of interactive intelligence flat board according to claim 5 is characterized in that, described at the uniform velocity lining instrument also comprises tracks, drive motor, gearing and support; Described paintbrush is fixed on the described support with removably, and described support is connected with described gearing, and described drive motor at the uniform velocity drives described gearing and moves in described tracks; The corresponding described tracks setting of described measuring instrument.
7. testing tool time delay of interactive intelligence flat board according to claim 6 is characterized in that, described tracks is rectilinear orbit; Described measuring instrument is linear staff, and is parallel with described tracks.
8. testing tool time delay of interactive intelligence flat board according to claim 6 is characterized in that,
Described tracks is circuit orbit; Described measuring instrument is circular scale.
9. according to testing tool time delay of each described interactive intelligence flat board of claim 5 to 8, it is characterized in that described touch testing tool time delay also comprises processor;
Wherein, described image capture device catches described line vestige at interval with first predetermined time, and wherein, described first predetermined time is spaced apart the time interval of obtaining 2 described pictures continuously; Described processor be used for obtaining the length of described line vestige of every width of cloth picture and described paintbrush displacement apart from difference, and the ratio that obtains the described translational speed apart from difference and described paintbrush in each width of cloth picture, when the difference of the minimum value of the maximal value of described ratio and described ratio is less than or equal to the refresh time of the dull and stereotyped curtain of described interactive intelligence, obtain the minimum value of described ratio as the time delay of interactive intelligence flat board.
10. according to testing tool time delay of each described interactive intelligence flat board of claim 5 to 8, it is characterized in that described touch testing tool time delay also comprises processor;
Wherein, described image capture device catches described line vestige at interval with first predetermined time, and wherein, described first predetermined time is spaced apart the time interval of obtaining 2 described pictures continuously; Described processor be used for obtaining the length of described line vestige of every width of cloth picture and described paintbrush displacement apart from difference, and the ratio that obtains the described translational speed apart from difference and described paintbrush in each width of cloth picture, the refresh time that is less than or equal to the dull and stereotyped curtain of described interactive intelligence when the difference of the minimum value of the maximal value of described ratio and described ratio with second predetermined time interval difference the time, then obtain the minimum value of described ratio as the time delay of interactive intelligence flat board; Wherein, described second predetermined time is spaced apart the camera shutter time.
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| CN110580125A (en) * | 2018-06-07 | 2019-12-17 | 广州视源电子科技股份有限公司 | partial refreshing method, device, equipment and medium for display interface |
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| CN110716671B (en) * | 2019-10-15 | 2023-06-27 | 京东方科技集团股份有限公司 | Electronic whiteboard and driving method thereof |
| CN113946400A (en) * | 2021-10-29 | 2022-01-18 | 四川长虹教育科技有限公司 | Method for reducing Windows end writing delay on intelligent interactive large screen |
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