CN112083246A - Touch display device system delay measuring device and method - Google Patents
Touch display device system delay measuring device and method Download PDFInfo
- Publication number
- CN112083246A CN112083246A CN202010952581.4A CN202010952581A CN112083246A CN 112083246 A CN112083246 A CN 112083246A CN 202010952581 A CN202010952581 A CN 202010952581A CN 112083246 A CN112083246 A CN 112083246A
- Authority
- CN
- China
- Prior art keywords
- touch
- equipment
- shooting
- reference position
- tested
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000001934 delay Effects 0.000 claims description 2
- 238000000691 measurement method Methods 0.000 claims 5
- 238000005457 optimization Methods 0.000 description 6
- 101000579647 Penaeus vannamei Penaeidin-2a Proteins 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 241001422033 Thestylus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention relates to the field of touch display, discloses a delay measuring device and method of a touch display device system, and solves the problems that a measuring scheme in the prior art needs more hardware devices, is high in cost and is complex in setting. The device includes: the touch pen is used for drawing a reference position mark on a screen of the touch equipment to be tested before testing, and writing a drawn line on the screen of the touch equipment to be tested towards the reference position direction during testing; the shooting equipment is used for shooting a video for writing and drawing a line on a screen of the touch equipment to be tested by using a touch pen; and the analysis equipment is used for analyzing the shot video of the written and drawn line frame by frame, recording a picture frame when the pen point of the touch pen reaches the reference position and a picture frame when the actual written and drawn line track reaches the reference position, obtaining a picture frame number between the two picture frames, and calculating by combining the shooting frequency of the shooting equipment to obtain the system delay of the touch equipment to be tested. The invention is suitable for system delay measurement of the touch display device.
Description
Technical Field
The invention relates to the field of touch display, in particular to a delay measuring device and method of a touch display device system.
Background
In recent years, with the development of touch display technology, touch display devices have been widely used in various fields. The general touch display system has touch and display delay, and is characterized in that a drawing track of software lags behind a pen touch when writing. The system delay directly influences the interactive experience feeling, and theoretically, the smaller the delay is, the closer the real writing experience is. The delay is an indispensable technical index for measuring the performance of the touch display device, and the measurement of the delay is particularly important in various links of development, production and delivery of the touch display device.
In the traditional technology, the touch pen is moved through a transmission device, a position sensor outputs a primary trigger signal when detecting that the touch pen reaches a target point, a handwriting sensor outputs a primary trigger signal when detecting that the handwriting reaches the target point, and finally a processor calculates the time delay between the two trigger signals.
The scheme needs more hardware equipment for measuring the time delay of the touch system, and is high in cost and complex in setting.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the delay measuring device and method for the touch display equipment system are provided, and the problems that more hardware equipment is needed, the cost is high, and the setting is complex in a measuring scheme in the traditional technology are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a touch display device system delay measuring apparatus, comprising:
the touch pen corresponding to the touch equipment to be tested is used for drawing a reference position mark on a screen of the touch equipment to be tested before testing, and writing a drawn line on the screen of the touch equipment to be tested towards the reference position during testing;
the shooting equipment is used for shooting a video for writing and drawing a line on a screen of the touch equipment to be tested by using a touch pen;
and the analysis equipment is used for analyzing the shot video of the written and drawn line frame by frame, recording a picture frame when the pen point of the touch pen reaches the reference position and a picture frame when the actual written and drawn line track reaches the reference position, obtaining a picture frame number between the two picture frames, and calculating by combining the shooting frequency of the shooting equipment to obtain the system delay of the touch equipment to be tested.
As a further optimization, the shooting device is a camera or a mobile phone supporting slow motion shooting.
As further optimization, the analysis device is a tablet computer, a mobile phone, a common computer or other devices capable of analyzing and shooting videos, and video main frame analysis software is carried on the analysis device.
In addition, the invention also provides a touch display device system delay measuring method, which is applied to the measuring device and comprises the following steps:
a. before testing, drawing a reference position mark on a screen of the touch equipment to be tested by using a touch pen;
b. during testing, a touch pen is adopted to write a drawn line on a screen of the touch equipment to be tested towards the direction of a reference position, and meanwhile, shooting equipment shoots a video for writing the drawn line;
c. and analyzing the shot video of the written and drawn line frame by frame, recording picture frames when the pen point of the touch pen reaches the reference position and picture frames when the actual written and drawn line track reaches the reference position, obtaining the picture frame number between the two picture frames, and calculating by combining the shooting frequency of the shooting equipment to obtain the system delay of the touch equipment to be tested.
As a further optimization, in step a, the reference position mark is a vertical line.
As a further optimization, in the step b, an operator directly adopts a touch pen to manually write a drawn line on the screen of the touch device to be tested towards the reference position.
As a further optimization, in step c, the method for obtaining the system delay of the touch device to be tested by combining the shooting frequency calculation of the shooting device includes:
obtaining the system delay of the touch equipment to be tested according to the picture frame number between the picture frame when the pen point of the touch pen reaches the reference position and the picture frame when the actual writing and drawing track reaches the reference position and the picture shooting time of each frame of picture; wherein, the shooting time of each frame picture is 1000 ms/shooting frequency.
As a further optimization, the method further comprises the steps of:
d. and c, repeating the steps b and c, measuring and obtaining corresponding delays of a plurality of touch equipment systems to be measured aiming at a plurality of different reference positions, and calculating an average value to be used as a final measurement delay.
The invention has the beneficial effects that:
the delay of the touch screen display system can be conveniently measured only by using common equipment at the side, the test method is simple, the cost is low, and the measurement result is accurate. The method facilitates the inspection process in each link of development/production/delivery of the touch display device.
Drawings
FIG. 1 is a schematic diagram of the system delay measurement principle of the touch display device of the present invention;
FIG. 2 is a video picture frame A taken when the stylus is writing at a reference position;
FIG. 3 depicts a video picture frame B taken when the trajectory reaches the reference position;
the labels in the figure are: the method comprises the following steps of 1, 2, 3, 4 and 5, wherein the screen of the touch device to be tested is a touch pen, the shooting device is a shooting device, and the drawing track is a reference mark.
Detailed Description
The invention aims to provide a delay measuring device and method of a touch display device system, and solves the problems that a measuring scheme in the prior art needs more hardware devices, is high in cost and is complex in setting. The invention only needs to use a high-speed camera or a mobile phone supporting slow motion shooting as shooting equipment on hardware, and computer equipment or other equipment for analyzing videos frame by frame as analysis equipment. The measuring method comprises the steps of drawing a reference mark on a screen of a touch device to be measured by using a touch pen, then shooting a writing and drawing video, and measuring the delay time from a drawing track to a pen stroke through frame-by-frame analysis.
The implementation principle of the invention is shown in fig. 1, firstly, a touch pen 2 is used for drawing a reference mark 4 on a screen 1 of a touch device to be tested, during testing, the touch pen 2 is used for drawing a line on the screen along the direction of the reference mark 4, a shooting device 3 is used for shooting a video of the drawn line at the same time, then a picture frame of the pen point of the touch pen 2 reaching the reference mark 4 and a picture frame of an actual drawing track 5 reaching the reference mark 4 are recorded through frame-by-frame video analysis, so that the number of picture frames between the two frames is obtained, and the obtained number of the picture frames is multiplied by the picture shooting time of each frame to obtain the delay time from the drawing track to the pen touch.
In particular, in order to reduce the measurement cost and simplify the measurement, a mobile phone supporting slow motion shooting may be used as the shooting device. Generally, a slow-motion shooting mobile phone can support a refresh rate of 120Hz-240Hz or even higher, and the higher the refresh rate is, the smaller the shooting error is. For example, each frame of a 120Hz camera is 8.3ms, each frame of a 240Hz camera is 4.2ms, and the intrinsic refreshing time of the image of the common display (33.3ms @30Hz, 20ms @50Hz, 16.7ms @60Hz) is lower.
In the scheme, the touch device to be tested can be any touch display device capable of supporting writing, can be a capacitive/infrared type/optical type touch screen, is not limited by the scheme of the touch screen, and can be tested by using a corresponding touch pen during testing. The test is not influenced by the writing speed, the speed of the pen does not need to be accurately controlled, the operator can draw a line on the screen directly, and the real writing state of the user is measured.
The computing device for frame-by-frame analysis of the video may be a regular computer, or may be a smartphone/smart tablet or other computing device that can analyze the captured video. Video frame-by-frame analysis software is carried, and a measurement result can be directly obtained through software calculation.
When performing a video frame-by-frame analysis, two special picture frames will be recorded: a picture frame a corresponding to the actual pen point reaching a reference point on the screen, and a picture frame B corresponding to the actual pen point reaching the same reference point on the display screen, as shown in fig. 2 and 3; and multiplying the number of the picture frames passing between the two pictures of the AB picture by the time of each picture of the shooting device, wherein the obtained time is the delay time from the drawing track to the pen touch. In actual measurement, in order to improve the accuracy of measurement, a plurality of marked points should be measured, and a plurality of measured values are averaged to be the final measurement delay time.
Claims (8)
1. A touch display device system delay measuring device is characterized by comprising:
the touch pen corresponding to the touch equipment to be tested is used for drawing a reference position mark on a screen of the touch equipment to be tested before testing, and writing a drawn line on the screen of the touch equipment to be tested towards the reference position during testing;
the shooting equipment is used for shooting a video for writing and drawing a line on a screen of the touch equipment to be tested by using a touch pen;
and the analysis equipment is used for analyzing the shot video of the written and drawn line frame by frame, recording a picture frame when the pen point of the touch pen reaches the reference position and a picture frame when the actual written and drawn line track reaches the reference position, obtaining a picture frame number between the two picture frames, and calculating by combining the shooting frequency of the shooting equipment to obtain the system delay of the touch equipment to be tested.
2. The touch display device system delay measuring apparatus of claim 1,
the shooting equipment is a camera or a mobile phone supporting slow motion shooting.
3. The touch display device system delay measuring apparatus of claim 1,
the analysis equipment is a tablet computer, a mobile phone, a common computer or other equipment capable of analyzing and shooting videos, and carries video main frame analysis software.
4. A touch display device system delay measurement method applied to the touch display device system delay measurement device according to any one of claims 1 to 3, the method comprising the following steps:
a. before testing, drawing a reference position mark on a screen of the touch equipment to be tested by using a touch pen;
b. during testing, a touch pen is adopted to write a drawn line on a screen of the touch equipment to be tested towards the direction of a reference position, and meanwhile, shooting equipment shoots a video for writing the drawn line;
c. and analyzing the shot video of the written and drawn line frame by frame, recording picture frames when the pen point of the touch pen reaches the reference position and picture frames when the actual written and drawn line track reaches the reference position, obtaining the picture frame number between the two picture frames, and calculating by combining the shooting frequency of the shooting equipment to obtain the system delay of the touch equipment to be tested.
5. The touch display device system delay measurement method of claim 4,
in step a, the reference position mark is a vertical line.
6. The touch display device system delay measurement method of claim 4,
and b, directly and manually writing a drawn line on the screen of the touch equipment to be tested towards the reference position by an operator by using a touch pen.
7. The touch display device system delay measurement method of claim 4,
in step c, the method for obtaining the system delay of the touch device to be tested by combining the shooting frequency calculation of the shooting device comprises the following steps:
obtaining the system delay of the touch equipment to be tested according to the picture frame number between the picture frame when the pen point of the touch pen reaches the reference position and the picture frame when the actual writing and drawing track reaches the reference position and the picture shooting time of each frame of picture; wherein, the shooting time of each frame picture is 1000 ms/shooting frequency.
8. The touch display device system delay measurement method of claim 7,
the method further comprises the steps of:
d. and c, repeating the steps b and c, measuring and obtaining corresponding delays of a plurality of touch equipment systems to be measured aiming at a plurality of different reference positions, and calculating an average value to be used as a final measurement delay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010952581.4A CN112083246A (en) | 2020-09-11 | 2020-09-11 | Touch display device system delay measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010952581.4A CN112083246A (en) | 2020-09-11 | 2020-09-11 | Touch display device system delay measuring device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112083246A true CN112083246A (en) | 2020-12-15 |
Family
ID=73737555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010952581.4A Pending CN112083246A (en) | 2020-09-11 | 2020-09-11 | Touch display device system delay measuring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112083246A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370268A (en) * | 2021-07-01 | 2021-09-10 | 湖南大学 | Mechanical arm motion control delay measurement system and method based on visual detection |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005184749A (en) * | 2003-12-24 | 2005-07-07 | Nippon Telegr & Teleph Corp <Ntt> | Video delay time measuring method, system and apparatus therefor |
| JP2011182374A (en) * | 2010-02-27 | 2011-09-15 | Yutaka Takahashi | Method for measuring total delay time of real-time video transmission using timer making still display of photographic time |
| WO2015013752A1 (en) * | 2013-08-01 | 2015-02-05 | Brennan Broadcast Group Pty Ltd | Synchronisation of video and audio capture |
| US20160147363A1 (en) * | 2014-11-26 | 2016-05-26 | Samsung Display Co., Ltd. | System and method of measuring continuous touch controller latency |
| WO2016208876A1 (en) * | 2015-06-26 | 2016-12-29 | 크루셜텍(주) | Touch detection device for varying touch detection rate and touch detection method thereof |
| WO2017117749A1 (en) * | 2016-01-06 | 2017-07-13 | 深圳市莫孚康技术有限公司 | Follow focus system and method based on multiple ranging approaches, and photographing system |
| US20180097573A1 (en) * | 2015-04-30 | 2018-04-05 | Hangzhou Hikvision Digital Technology Co., Ltd. | Method and system for detecting image delay |
-
2020
- 2020-09-11 CN CN202010952581.4A patent/CN112083246A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005184749A (en) * | 2003-12-24 | 2005-07-07 | Nippon Telegr & Teleph Corp <Ntt> | Video delay time measuring method, system and apparatus therefor |
| JP2011182374A (en) * | 2010-02-27 | 2011-09-15 | Yutaka Takahashi | Method for measuring total delay time of real-time video transmission using timer making still display of photographic time |
| WO2015013752A1 (en) * | 2013-08-01 | 2015-02-05 | Brennan Broadcast Group Pty Ltd | Synchronisation of video and audio capture |
| US20160147363A1 (en) * | 2014-11-26 | 2016-05-26 | Samsung Display Co., Ltd. | System and method of measuring continuous touch controller latency |
| US20180097573A1 (en) * | 2015-04-30 | 2018-04-05 | Hangzhou Hikvision Digital Technology Co., Ltd. | Method and system for detecting image delay |
| WO2016208876A1 (en) * | 2015-06-26 | 2016-12-29 | 크루셜텍(주) | Touch detection device for varying touch detection rate and touch detection method thereof |
| WO2017117749A1 (en) * | 2016-01-06 | 2017-07-13 | 深圳市莫孚康技术有限公司 | Follow focus system and method based on multiple ranging approaches, and photographing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370268A (en) * | 2021-07-01 | 2021-09-10 | 湖南大学 | Mechanical arm motion control delay measurement system and method based on visual detection |
| CN113370268B (en) * | 2021-07-01 | 2022-07-19 | 湖南大学 | Mechanical arm motion control delay measurement system and method based on visual detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103268194B (en) | A kind of method of testing and testing tool time delay of interactive intelligent tablet computer | |
| CN105654507B (en) | A kind of vehicle overall dimension measurement method based on the tracking of image behavioral characteristics | |
| CN102103435A (en) | Interactive electronic whiteboard device and positioning method thereof | |
| CN102419675B (en) | Coordinate normalizing method of electromagnetic induction device and electromagnetic induction device | |
| CN103344258A (en) | Device and method for testing performance of servo system of electro-optic theodolite | |
| CN103278143A (en) | Machine version-based zero position walking momentum testing device and machine vision-based zero position walking momentum testing method | |
| CN104063286A (en) | Method and device for testing fluency of change of displayed content | |
| CN112083246A (en) | Touch display device system delay measuring device and method | |
| CN108090922A (en) | Intelligent Target pursuit path recording method | |
| CN104376323B (en) | A kind of method and device for determining target range | |
| CN112907778A (en) | Integrated high-precision end point camera timing system and timing method thereof | |
| CN115187553A (en) | DIC strain detection device and method based on speckle image display | |
| CN104216147A (en) | Image quality assessment based LCD (Liquid Crystal Display) display screen motion blur detection method | |
| CN104378626A (en) | Time delay testing system of image transmitting system and method for testing time delay testing system | |
| CN113553261B (en) | Software automated testing method, device and computer readable storage medium | |
| CN101458169B (en) | Tracking speed measuring method for real time image tracking system | |
| CN102944693A (en) | System and method based on area array fast field synchronization charge coupled device (CCD) image sensor and used for measuring speed | |
| CN103870371A (en) | Method and device for testing smoothness of touch screen | |
| CN117234825B (en) | Intelligent testing system for touch performance of medium-and-large-size touch screen | |
| US20180345110A1 (en) | Golf swing analysis from pre-strike sound | |
| CN110006445A (en) | Running distance calculating method and device | |
| CN112783707A (en) | Method and system for measuring click response time of touch screen | |
| CN102981683A (en) | Rapid correction method and optical axis correction method for optical positioning block of camera | |
| CN105100785A (en) | Smoothness test method and device | |
| CN104458192A (en) | Measurement system and measurement method for wind tunnel flow field vortex motion frequency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201215 |